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Service Manual
Atlas Patient Monitor
Welch Allyn8500 SW Creekside Pl
Beaverton, Oregon 970086200-43E Revision D Copyright 2007
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor i
Drawings and/or illustrations and/or part numbers contained in this document are for reference purposes only. For current revisions call the Welch Allyn Customer Service phone number listed in Section 1 page 2.
Part No. Rev. Description ECN# Date Approved6200-43E A New release of Atlas Service Manual 5-40429 10/99 RS/LP
6200-43E B Updated calibration proceduresUpdated performance verification proceduresUpdated drawing 620150 Rev B to Rev CUpdated drawing 620201 Rev A to Rev BUpdated drawing 620524 Rev A to Rev BAdded complete repair parts lists. Added calibration date table
5-44782 07/02 DK
6200-43E C Updated to reflect changes in hardware and software 5-45730 03/03 DK
ii Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
CONTENTSList of Figures ...................................................................................................................vi
List of Tables .....................................................................................................................ix
Section 1: General InformationAbout the Atlas Monitor........................................................................................................1
Help Information ...................................................................................................................2
Agency Approvals .................................................................................................................3
Warning, Cautions and Notes................................................................................................3
Product Model Number Structure.........................................................................................5
623xP Main Menu Architecture............................................................................................6
622xP Main Menu Architecture............................................................................................7
621xP Main Menu Architecture............................................................................................8
Atlas System Block Diagram .................................................................................................9
Section 2: ServiceIncoming Inspection ............................................................................................................11
Calibration and Maintenance Schedule..............................................................................12
Setting Date and Time .........................................................................................................14
Pangea Communication Protocol ........................................................................................14
BP Calibration......................................................................................................................14
50mmHg Calibration............................................................................................................17
250mmHg Calibration..........................................................................................................17
CO2 Reset (623xx Models Only)..........................................................................................18
ET CO2 Calibration ..............................................................................................................19
No-Load Battery Voltage Calibration ..................................................................................20
Battery Voltage Calibration..................................................................................................21
Printer Print Adjustment .....................................................................................................22
Temperature Calibration......................................................................................................23
Calibration Date Set .............................................................................................................24
Explanation of an Atlas Service Screen..............................................................................25
Software Upgrade Procedure...............................................................................................27
Down Loading NVRAM Files..............................................................................................28
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor iii
Section 3: Functional tests and Trouble Shooting
Power on Self Test ...............................................................................................................37
Menu Functional Test..........................................................................................................38
BP Test..................................................................................................................................40
Static Manometer Accuracy Test.........................................................................................41
BP Leak Test ........................................................................................................................42
Over 15 mmHg Test .............................................................................................................42
BP Dump Verification Test ..................................................................................................43
Hardware Fail Safe Tests .....................................................................................................43
ECG/Respiration Test...........................................................................................................44
SpO2 Test..............................................................................................................................45
Temperature Test .................................................................................................................45
CO2 Functional Test.............................................................................................................45
Battery Functional Test........................................................................................................46
Printer Functional Test ........................................................................................................47
Print on Alarm Test..............................................................................................................47
Software/Firmware ..............................................................................................................47
ECG Alarms Test ..................................................................................................................48
Respiration Alarms Test ......................................................................................................50
SpO2 Alarm Test ..................................................................................................................51
Silence Alarm Test...............................................................................................................52
CO2/RESP Test .....................................................................................................................52
Blood Pressure Alarm Test ..................................................................................................53
Trouble Shooting..................................................................................................................56
Section 4: Disassembly and Repair
About Section 4 ...................................................................................................................63
Battery Door Removal..........................................................................................................64
Battery Removal...................................................................................................................64
Rear Housing Removal ........................................................................................................65
Printer Cable and Display Cable Removal ..........................................................................66
Power Supply Ground Wire Removal.................................................................................66
Tie Wrap Removal................................................................................................................67
CPU Removal .......................................................................................................................67
iv Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Main PCB Removal ..............................................................................................................67
Main PCB Side Connector Removal....................................................................................68
Main PCB Hose and Wire Removal.....................................................................................68
Pump Removal.....................................................................................................................68
CO2 Exhaust Removal..........................................................................................................69
Pryon PCB Removal.............................................................................................................69
E-Pac Foam Removal (Top). ................................................................................................69
Power Supply Removal. ......................................................................................................70
Power Supply Fuse Location ..............................................................................................70
Fan Removal ........................................................................................................................70
E-Pac Removal (Lower)........................................................................................................71
Deflection PCB Removal......................................................................................................71
CRT Removal .......................................................................................................................71
Display PCB Removal ..........................................................................................................72
Printer Door Button Removal ..............................................................................................73
Printer Assembly Locking Tab Release. ..............................................................................73
Printer Positioning Slot Removal........................................................................................74
Printer Assembly Removal. .................................................................................................74
Printer Lip Assembly. ..........................................................................................................74
Printer Cable Routing. .........................................................................................................75
Appendix A: Theory of Operation
Power Supply Circuits.........................................................................................................77
Model 622 and Model 623...................................................................................................80
On/Off Circuits ....................................................................................................................81
Battery Charger ....................................................................................................................84
NIBP Circuits ......................................................................................................................87
CRT Deflection Board..........................................................................................................92
Vertical Amplifier: ...............................................................................................................92
Recorder Electronics............................................................................................................96
Power Supply – 24 Switcher...............................................................................................96
Motor Driver:........................................................................................................................97
Patient Isolated Circuits ......................................................................................................98
Linear Regulators and Filtering – Model 621 .....................................................................99
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor v
Linear Regulators and Filtering – Model 622 and 623.....................................................100
A/D Circuits .......................................................................................................................101
A/D Multiplexer.................................................................................................................102
Serial Communication.......................................................................................................103
Signal Isolation ..................................................................................................................104
ECG Circuits.......................................................................................................................104
Impedance Respiration (Model 622/623 only) .................................................................109
SpO2 Circuits .....................................................................................................................110
Appendix B: Repair Parts Lists
621N0 .................................................................................................................................113
621NP .................................................................................................................................116
621S0..................................................................................................................................119
621SP..................................................................................................................................121
622N0 .................................................................................................................................124
622NP .................................................................................................................................127
622S0..................................................................................................................................130
622SP..................................................................................................................................133
623NP .................................................................................................................................136
623SP..................................................................................................................................142
Appendix C: Interconnect Diagram
Interconnect diagram 620396 Rev A.................................................................................145
Appendix D: Atlas Drawings and Electrical Schematics
See List of Figures on page v for individual drawings.....................................................146
Appendix E: Calibration Date Table
Calibration Date Index Table. ............................................................................................187
Appendix F: Serial Number Cut in History. ...............................................211
Appendix G: Atlas Calibration and Functional Test Form........................213
vi Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
List of Figures
Figure 1-1. 623xP Main Menu Architecture. ........................................................................6
Figure 1-2. 622xP Main Menu Architecture. ........................................................................7
Figure 1-3. 621xP Main Menu Architecture. ........................................................................8
Figure 1-4. Atlas System Block Diagram ..............................................................................9
Figure 2-1. Example of a new HyperTerminal connection. ...............................................15
Figure 2-2. Choosing COM1 in HyperTerminal..................................................................15
Figure 2-3. HyperTerminal Port Settings. ...........................................................................16
Figure 2-4. Photo of Atlas BP calibration setup. ................................................................17
Figure 2-5. Example of CO2 calibration setup. ...................................................................21
Figure 2-6. Example and Explanation of an Atlas Service Screen ....................................25
Figure 2-7. Pangea prompt in HyperTerminal ....................................................................29
Figure 2-8. Choosing “Send Text File” in HyperTerminal.................................................29
Figure 2-9. Choosing directory where NVRAM files are stored. .......................................30
Figure 2-10. Choosing the nvram_cal_init.txt file. .............................................................30
Figure 2-11. Pangea screen after opening the nvram_cal_init.txt file. ..............................31
Figure 2-12. Pangea screen after opening the nvram_common.txt file. ............................31
Figure 2-13. Pangea prompt after opening the model# file................................................32
Figure 2-14. Pangea screen after loading a language file. ..................................................33
Figure 2-15. Pangea screen after downloading the nvram_printer.txt file. .......................34
Figure 2-16. Pangea screen nvram set serial command. ....................................................35
Figure A-1. Model 621 DC/DC circuit block diagram. .......................................................77
Figure A-2. On/Off Control Circuits. ..................................................................................78
Figure A-3. Model 621 Buck converter. ..............................................................................79
Figure A-4. Model 621 linear regulation. ...........................................................................80
Figure A-5. DC/DC circuit diagram.....................................................................................81
Figure A-6. Boost converter and off/on switch. .................................................................82
Figure A-7. Boost converter.................................................................................................83
Figure A-8. Battery charging. ..............................................................................................85
Figure A-9. Linear regulator. ...............................................................................................86
Figure A-10. NIBP PWM A/D converter. ............................................................................86
Figure A-11. PWM timing. ..................................................................................................87
Figure A-12. Primary transducer amplifier.........................................................................89
Figure A-13. Safety transducer amplifier............................................................................90
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor vii
Figure A-14. Over pressure fault circuit. ............................................................................91
Figure A-15. Pump relay circuit..........................................................................................91
Figure A-16. Ramp generator circuit...................................................................................92
Figure A-17. Vertical amplifier circuit................................................................................93
Figure A-18. Horizontal amplifier grid voltage circuit. .....................................................95
Figure A-19. Video amplifier circuit. ..................................................................................96
Figure A-20. Recorder power supply circuit. .....................................................................97
Figure A-22. Print head temperature circuit. .....................................................................98
Figure A-23. Patient isolation circuit..................................................................................99
Figure A-24. Model 621 line regulation and filtering. .......................................................99
Figure A-25. Model 622/623 line regulation and filtering. ..............................................100
Figure A-26. A/D converter circuit. ..................................................................................101
Figure A-27. A/D multiplexer circuit. ..............................................................................102
Figure A-28. Serial communication circuit. .....................................................................104
Figure A-29. Defib protect and RFI filtering circuit. ........................................................105
Figure A-30. Input buffer circuit. ......................................................................................105
Figure A-31. Lead select circuit. .......................................................................................106
Figure A-32. Differential amp/slew rate amp circuit. ......................................................107
Figure A-33. Right leg drive circuit. .................................................................................107
Figure A-34. High pass and gain stage circuit. .................................................................108
Figure A-35. Temperature amplifier circuit......................................................................108
Figure A-36. Respiration drive circuit. .............................................................................109
Figure A-37. Respiration diff amp circuit.........................................................................110
Figure A-38. Gain and filter circuit...................................................................................110
Figure C-1. Atlas Interconnect Diagram............................................................................145
Figure D-1. Atlas model 200 main board..........................................................................147
Figure D-2. Atlas model 200 NIBP electronics. ................................................................148
Figure D-3. Atlas model 200 power supply......................................................................149
Figure D-4. Atlas Power isolation /SpO2 interface...........................................................150
Figure D-5. Atlas model 200 ECG amp. ............................................................................151
Figure D-6. Atlas ECG A/D interface.................................................................................152
Figure D-7. Atlas CPU subsystem. ....................................................................................153
Figure D-8. Atlas FPGA. ....................................................................................................154
Figure D-9. Atlas 200/210/220 I/O filters. ........................................................................155
viii Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Figure D-10. Flash, SDRAM HRESET config word. .........................................................156
Figure D-11. Power PC MP C823 CPU. .............................................................................157
Figure D-12. Power distribution........................................................................................158
Figure D-13. Front panel display. .....................................................................................159
Figure D-14. Key board scanner. .......................................................................................160
Figure D-15. Temp/pulse LED drivers. .............................................................................161
Figure D-16. NIBP LED drivers. ........................................................................................162
Figure D-17. SpO2 LED drivers. ........................................................................................163
Figure D-18. CRT deflection board. ..................................................................................164
Figure D-19. Printer electronics. .......................................................................................165
Figure D-20. Model 220 main board. ................................................................................166
Figure D-21. 210/220 NIBP electronics.............................................................................167
Figure D-22. DC/DC power supply....................................................................................168
Figure D-23. Power isolation/SpO2 interface. ..................................................................169
Figure D-24. 210/220 ECG amp.........................................................................................170
Figure D-25. 210/220 ECG A/D interface..........................................................................171
Figure D-26. 210/220 Respiration circuit. ........................................................................172
Figure D-27. 210/220 serial communication. ...................................................................173
Figure D-28. 200/210/220 transformer isolation. .............................................................174
Figure D-29. 200/210/220 ECG patient cable. ..................................................................175
Figure D-30. 200/210/220 power supply sub assy. ..........................................................176
Figure D-31. 220 ETCO2 PCB assembly. ...........................................................................177
Figure D-32. 200/210/220 Power supply. .........................................................................178
Figure D-33. Nonin SpO2 Board........................................................................................179
Figure D-34. Motor Stepper. ..............................................................................................180
Figure D-35. Pump Pneumatic. .........................................................................................181
Figure D-36. 200/210/220 ECG cable assembly. ...............................................................182
Figure D-37. CO2 cable assembly. .....................................................................................183
Figure D-38. Nellcor sensor cable assy. ............................................................................184
Figure D-39. 200/210/220 Pneumatic sub assy.................................................................185
Figure D-40. 220 CO2 cable assy. ......................................................................................186
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor ix
List of TablesTable 1-1. Operator manual part numbers. ...........................................................................1
Table 2-1. Atlas Packing List. ..............................................................................................11
Table 2-2. Tools Required for Service. ................................................................................13
Table 2-3. Software Revision Table .....................................................................................26
Table 2-4. Files needed to download language(s)...............................................................33
Table 3-1. Transducer pressure table...................................................................................41
Table 3-2 Resistor and temperature reference. ...................................................................45
Table 3-3. Atlas failure trouble shooting.............................................................................56
Table 3-4. Atlas failure trouble shooting.............................................................................57
Table 3-5. Atlas failure trouble shooting.............................................................................58
Table 3-6. Atlas failure trouble shooting.............................................................................59
Table 3-7. Atlas failure trouble shooting.............................................................................60
Table 3-8. Atlas failure trouble shooting.............................................................................61
Table A-1. Temperature coefficient. ....................................................................................84
Table B-1. Atlas 621N0 repair parts ..................................................................................113
Table B-2. Atlas 621NP repair parts. .................................................................................116
Table B-3. Atlas 621S0 repair parts...................................................................................119
Table B-4. Atlas 621SP repair parts...................................................................................121
Table B-5. Atlas 622N0 repair parts. .................................................................................124
Table B-6. Atlas 622NP repair parts. .................................................................................127
Table B-7. Atlas 622S0 repair parts...................................................................................130
Table B-8. Atlas 622SP repair parts...................................................................................133
Table B-9. Atlas 622NP repair parts. .................................................................................136
Table B-10. Atlas 623SP repair parts.................................................................................139
Table B-11. Atlas 623NP repair parts. ...............................................................................142
Table D-1. Atlas drawings revision page...........................................................................146
Table F-1. Changed to a new BP Valve..............................................................................211
Table F-2. Changed E-Pac and Changed to class B power supply. ..................................211
Table F-3. Upgraded printer cable to a cable with foam tape. .........................................211
Table F-4. Upgraded Revision level of CPU from 501 to 502...........................................211
Table F-5. Upgraded Revision level of Nellcor SpO2 to 506............................................212
x Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
General Information Section 1
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 1
About the Atlas Monitor
The Atlas Monitor combines in one unit all the necessary measurements for patients under anesthesia, for surgical recovery, or bed side monitoring. See Section 1, page 5 for a complete listing of product models and options.
According to the standards of care for Nurse Anesthetists and Anesthesiologists, all patients receiving conscious sedation are to be continuously monitored throughout the procedure and recovery phase by ECG, SpO2, and NIBP. CO2 monitoring is a requirement during gas anesthesia (when patient is ventilated).
The Atlas combines a CRT to display ECG, CO2, SpO2, and respiration waveforms. It utilizes LEDs for the other numeric values to maximize visibility and viewing angle. Although not designed to be a transport product, the monitor has an integral handle and it is small and light enough at 13 lbs. to be easily moved.
A battery was added to enable the monitor to be used if there is a power outage or to be unplugged momentarily when moved with the patient from the surgery room to the recovery room. The battery was not designed to make the Atlas into a transport monitor. The Atlas monitor should be plugged into AC as much as possible to give you the maximum battery backup time when there is a power outage. It will maintain unit operation for up to an hour when power is interrupted if the battery is fully charged.
WARNING: Discharging the battery frequently will shorten the battery life and will shorten the battery backup time.
IMPORTANT: For a complete description on the function and use of the Atlas, as well as user safety warnings, cautions, and warranty information, read and understand the Atlas Operator’s Manual. See the Table 1-1 below for correct Operator’s Manual part #.
Table 1-1. Operator manual part numbers.
Language Part#
English 6200-42E
French 6200-42F
German 6200-42G
Italian 6200-42I
Spanish 6200-42S
Portuguese 6200-42P
Japanese 6200-42J
Chinese 6200-42C
2 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 1 General Information
Help Information
To assure correct operation and performance all service and repairs must be performed by fully trained and properly equipped personnel, using genuine replacement parts and correct procedures. Failure to do so will also invalidate the product warranty.
MD International 11300 N.W. 41st Street Miami, FL 33178 USA tel: 305-669-9003 fax: 305-669-1971
Welch Allyn Inc. State Street Plant /Corporate Headquarters 4341 State Street Road Skaneateles Falls, NY 13153-0220, USA tel: 1-800-535-6663 315-685-4100 fax: 315-685-3361 www.welchallyn.com/medical/support/tech
Welch Allyn GMBH Zollerstrasse 2-4 72417 Jungingen, Germany tel: (011) 49-7477-927186 fax: (011) 49-7477-927193
Welch Allyn France SARL 814 rue Charles de Gaulle 77100 Mareuil les Meaux France tel: ( 011) 33 1.6009.3366 Fax: (011) 33 1 .6009.6797
Welch Allyn UK Ltd St. Georges House Vernon Gate, Derby England DE1 1UQ tel: (011) 44-01332-206208 fax: (011) 44-01332-206209 mob: (011) 44-0467-301814
Welch Allyn Australia Pty The Metro Centre Unit 5 38-46 South Street Rydalmere NSW 2116, Australia Postal address: PO Box 132 Rydalmere NSW 1701, Australia tel: (011) 612 9638-3000 fax: (011) 612 9638-3500
Welch Allyn Singapore Ltd 300 Beach Road, #25-08 The Concourse Singapore 199589, Singapore tel: (011) 65-291-0882 fax: (011) 65-291-5780
China Service Center Room 708 Central Plaza No. 277 Huang Pi Bei Rd. Huang Pi District Shanghai 200003 China tel: (011) 86-21-63279631 fax: (011) 86-21-63279632
Welch Allyn Japan K.K. Bon Marusan 8F, 3-5-1 Kanda Jinbo-Cho, Chiyoda-Ku Tokyo 101-0051 Japan tel: (011) 813-5212-7391 fax: (011) 813-3261-7372
General Information Section 1
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 3
Agency Approvals
Warning, Cautions and Notes All operating and service personnel should be familiar with the general safety information in this summary. Specific warnings and cautions will also be found throughout the opera-tors manual. Such specific warnings and cautions may not appear here in the summary.
US74227LISTEDC
ET L L i s t e dU L 2 6 01- 1 ,C SA C 2 2 . 2 N o . 6 01. 1I E C 6 0 6 01- 1 , AS 3 2 0 0 . 1I E C 6 0 6 01- 1- 2
The CE mark on this product indicates that ithas been tested to and conforms with the
within the 89/336/ECCElectromagnetic Compatibility Directive.provisions noted
N344
Australia EMC Framework Compliance
Electrical Shock Hazard
CAUTION
4 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 1 General Information
ATTENTION. Consult accompanying document
Handle With Care
MAX95%
Storage Humidity. Refer to technical specifications in operator'sfor more details.
Storage temperature. Refer to technical specifications in operator'smanual for more details.
PB
Lead Acid Battery. For disposal see maintenancesection in opertor's manual
General Information Section 1
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 5
Product Model Number Structure
621S0-E1 ECG, Nonin SpO2, NIBP
621SP-E1 ECG, Nonin SpO2, NIBP, Printer
621N0-E1 ECG,Nellcor SpO2,NIBP
621NP-E1 ECG,Nellcor SpO2,NIBP, Printer
622S0-E1 ECG, Nonin SpO2, NIBP, Temp, Respiration, Battery, RS232
622SP-E1 ECG, Nonin SpO2, NIBP, Temp, Respiration, Battery, RS232, Printer
622N0-E1 ECG, Nellcor SpO2, NIBP, Temp, Respiration, Battery, RS232
622NP-E1 ECG, Nellcor SpO2, NIBP, Temp, Respiration, Battery, RS232, Printer
623SP-E1 ECG, Nonin SpO2, NIBP, ETCO2, Temp, Respiration, Battery, RS232, Printer
623NP-E1 ECG, Nellcor SpO2, NIBP, ETCO2, Temp, Respiration, Battery, RS232, Printer
Product Structure Meaning:
The first three digits in the product structure sequence designates the model number. The fourth character in the sequence designates the SpO2. The fifth character in the sequence designates if it has a printer or not. The first suffix designates the country language when shipped. The second suffix designates the power cord shipped with the Atlas.
First Three Characters: Model number, 621, 622, 623
Fourth Character: N=Nellcor SpO2, S=Nonin SpO2
Fifth Character: P=Printer, 0=No Printer
First Suffix: E = English, F= French, G= German, I= Italian, S= Spanish, P= Portuguese C = Chinese, J= Japanese
Second Suffix:
1 = US, Canada, Japan2 = European4 = United Kingdom 6 = Australian
6 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 1 General Information
623xP Main Menu Architecture
Figure 1-1. 623xP Main Menu Architecture.
NOTE: The Print on alarm function in Advanced configuration mode screen is only available with software version BB.2.2000 and higher.
* NOTE: The Display A/D channels function in the Service Mode Screen only allowsyou to view system information by pressing the SET button. It does not allow
you to change system settings.
LanguageSilence durationECG gainECG lead setECG speedECG bandwidthInitial pressureMAPSecond trace selectionTemperature unitsRespiration speedCOPrint on alarm (only with software Rev.
BB.2.2000 or higher)
units2
623xP
Waveformscreen
Date/TimeScreen
TrendScreen
Set date & time
Verify manometerReset to factory defaultsBattery testCalibrate CoCRT test pattern
LED testButton testDisplay A/D channels *
2Service ModeScreen
SaveSettings
CoReset
2
AdvancedConfiguration
Date/TimeScreen
Advanced Configuration Screen
Service Mode Screen
Printer test pattern (Models 621SP and621NP only)
General Information Section 1
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 7
622xP Main Menu Architecture
Figure 1-2. 622xP Main Menu Architecture.
NOTE: The Print on alarm function in Advanced Configuration Screen is only available with software version BB.2.2000 and higher.
NOTE: On models 622S0 and 622N0 delete the Print test pattern function in the Service Mode Screen. Model 622S0 and 622N0 do not come with printers.
* NOTE: The Display A/D channels function in the Service Mode Screen only allows you to view system information by pressing the SET button. It does not allow you to change system settings.
LanguageSilence durationECG gainECG lead setECG speedECG bandwidthInitial pressureMAPSecond trace selectionTemperature unitsRespiration speedPrint on Alarm (Only with software Rev.
BB.2.2000 and higher.)
622xP
Waveformscreen
Date/TimeScreen
TrendScreen
Set date & time
Verify manometerReset to factory defaultsBattery testCRT test patternPrinter test pattern (Models 622SP and
622NP only)LED testButton testDisplay A/D channels *
Service ModeScreen
SaveSettings
AdvancedConfiguration
Date/TimeScreen
Service Mode Screen
Advanced Configuration Screen
8 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 1 General Information
621xP Main Menu Architecture
Figure 1-3. 621xP Main Menu Architecture.
NOTE: The Print on alarm function in Advanced configuration mode screen is only available with software version BB.2.2000 and higher.
NOTE: On models 621S0 and 621N0 delete the Print test pattern function in the Service Mode Screen. Model 622S0 and 622N0 do not come with printers.
* NOTE: The Display A/D channels function in the Service Mode Screen only allows you to view system information by pressing the SET button. It does not allow you to change system settings.
LanguageSilence durationECG gainECG lead setECG speedECG bandwidthInitial pressureMAPSecond trace selectionPrint on Alarm (Only with software Rev.
BB.2.2000 and higher.)
621xP
Waveformscreen
Date/TimeScreen
TrendScreen
Set date & time
Verify manometerReset to factory defaultsCRT test patternPrinter test pattern (Models 621SP and
621NP only)LED testButton testDisplay A/D channels *
Service ModeScreen
SaveSettings
AdvancedConfiguration
Date/TimeScreen
Service Mode Screen
Advanced Configuration Screen
General Information Section 1
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 9
Atlas System Block Diagram
Figure 1-4. Atlas System Block Diagram
RS-
232
Dri
vers
(Iso
late
d)
TT
LR
S-23
2T
TL
RS-
232
SPO
2Su
b-Sy
stem
(Iso
late
d)
2O
N,O
FFA
CO
N,
SYN
CPW
NIB
PPn
uem
atic
Con
trol
Dri
vers
Pow
erSu
pply
Bat
tery
Fron
tEnd
NIB
P
Prim
ary
Sens
orA
CLi
ne
Val
vePu
mp
SPO
2Se
nsor
Rs-
232
Test
Port
UA
RT-
1U
AR
T-2
GPI
OG
PIO
Mot
orol
aC
PUM
PC82
3Z3
4MX
16SD
RA
M
512
X16
Flas
h
Bus
Con
fig.
Reg
iste
r
Fron
tEnd
EKG
+Te
mp
(Iso
late
d)
Fron
tPan
el
Key
Boa
rdLE
DD
rive
rs
SPI
GPI
O
Tim
er2
P W
3-w
ire
SPI+
nine
chip
sele
ct
Prin
ter
Subs
yste
m
AT
90A
4414
8bi
tC
ontr
olle
r
Dri
ver
Mot
or
CO
2Su
bSys
tem
CO
2Se
nsor
CR
TSu
bSys
tem
Con
figu
rati
onEE
PRO
MM
otor
Prin
tHea
dC
lock
,Loa
dSt
robe
5V
oltV
ideo
Sign
als:
H-S
ync,
VSy
nc,V
ideo
Loca
lSys
tem
Bus
Add
ress
,Dat
a,C
ontr
ol
Tem
pEK
GX
524 K
eys
15X
731
LED
s
Service Section 2
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 11
Incoming InspectionNOTE: Use the following guidelines when unpacking the monitor from its shipping carton.
1. Before opening the monitor shipping carton, check for damage.
2. If damage is apparent, stop unpacking the carton and contract the shipping company forfurther instructions. If the carton is intact, unpack the monitor.
3. With the monitor out of its carton, check to see that all the items listed on the packing slip are in the shipping carton. See table 2-1 below.
Table 2-1. Atlas Packing List.
4. If an item is missing, first check the carton, then check with your receiving department. If necessary contact Welch Allyn at the address and phone number shown on Section 1.
5. Clean and disinfect by following the instructions printed in the Operator Manual.
NOTE: Perform all functional tests as listed in Section 3 before and after servicing.Operate the Atlas to verify the customer complaint before making any changes to the unit. Call the customer if the complaint is unclear. If the unit has caused or is suspected of having caused an injury of any type: DO NOT DISASSEMBLE OR REPAIR THE UNIT IN ANY WAY. Contact Welch Allyn Customer Service immediately.
Qty. Description1 Warranty card1 Adult Durable 1pc. Cuff1 Large Adult Durable 1pc. Cuff1 5ft. Straight Hose1 ECG Patient Cable (Three Lead)3 ECG Lead Wires 1 SpO2 Sensor/ Finger Clip1 ETCO2 Water Trap 623 only1 ETCO2 Scrubber 623 only1 Nasal Canula 623 only1 Atlas Monitor1 Detachable Power Cord1 Printer Paper Roll1 Operation Manual1 Skin Temperature Probe 622/623 only
12 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 2 Service
Calibration and Maintenance ScheduleThe Atlas Monitor must be serviced by authorized Welch Allyn personnel or agents at 6 month intervals. Maintenance requirements are specified for 6 month and 12 month service intervals. The monthly CO2 Reset operation can be performed by the user.
Service Interval Maintenance Requirements
Every 6 months: CO2 Calibration
Every 12 months: BP calibration, CO2 reset, battery voltage calibration, printer adjustment,and temperature calibration.Complete functional test
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Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 13
Table 2-2. Tools Required for Service.
Description Part# Company100cc Test Volume T-112189 Welch Allyn500cc Test Volume T-112854 Welch AllynT-10 TORX screwdriver XTD-10 Xcelite brand7/16" deep socket for Temperature Port nut Generic 1/4" driveSqueeze Bulb and Valve 5088-01 Welch AllynCalibrated Manometer (0-10PSIG) Digimano 1000 NetechBio-Tek (NIBP TESTER) BP Pump Bio-TekPneumatic Tubing 5200-19 Welch AllynPneumatic Tubing (coiled) 5200-19M Welch Allyn"Y" Fitting "Optional" 9586TPK4 Welch Allyn"T" Fitting (3) 9858TPK4 Welch AllynNonin Patient Simulator 8000S NoninNonin Cable 5200-52 NoninCalibrated Thermometer for 90F to 115F range 1002-3FC ERTCOLG, Adult Cuff/Bag 5200-02 Welch AllynNellcor Patient Simulator For atlas with "MP 204/205 SpO2 PCB ONLY " SRC-2 Nellcor
Nellcor Patient Simulator "MP 506 PCB ONLY " SRC-MAX Nellcor
Nellcor Sensor Cable "Purple Connectors" will work on all Atlas units with 204/205/506 SpO2 PCB DEC-8 NellcorNellcor Sensor Cable "Gray Connectors" "For Atlas units with MP 204/205 SpO2 PCB only" EC-8 NellcorECG Simulator with Impedance Respiration 214B DNI NevadaECG Patient Cable (5 lead AHA) 6200-02 Welch AllynECG Patient Cable (5 lead IEC) 6200-04 Welch AllynECG leads, 5 Lead (IEC) 6200-08 Welch AllynECG leads, 5 Lead AHA 6200-06 Welch AllynCertified Gas "10% CO2,10% O2, balance N2" 0304724SRBD Scott Medical ProductsETCO2 Water Trap (package of 5) 6200-20 Welch AllynETCO2 Scrubber 6200-21 Welch AllynETCO2 Adult Nasal Sample Line 6200-22 Welch AllynSurface Sensor, Temperature 6200-15 Welch AllynAtlas Repair and Calibration Software 620538 Welch Allyn
Printer Paper - Case 6200-40 Welch AllynDigital Multimeter with 10mV accuracy on a 10V scale; 10A RangeAdjustable DC power supply 5A @ 7VBattery cable assembly 620174-1 Welch AllynAtlas interface cable to PC 6200-60 Welch AllynPC with Windows 95 and above and with HyperTerminal serial port software
Part of Windows 95 & above
1/4" Mono Phono Jack1000 Ohm precision resistor 1%1200 Ohm precision resistor 1%1350 Ohm precision resistor 1%1540 Ohm precision resistor 1%1870 Ohm precision resistor 1%
14 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 2 Service
Setting Date and TimeNOTE: Check date and time before doing any calibration. Set date and time if incorrect. Set time and date as follows;
1. Turn Atlas on.
2. Press CLOCK button next to power on button to check date and time. Use the far rightSELECT button to scroll. Highlight the date or time that needs changed.
3. Press the SET button to adjust date and time.
4. Press CLOCK button to exit.
Pangea Communication ProtocolThe Pangea Communication Protocol allows interaction of the Atlas with the computer through the serial interface port. A prompt is emitted at the computer screen when the instrument powers up and is ready to accept commands. The prompt is Pangea>. A prompt is emitted after the completion of each pangea command. Pangea commands are case sensi-tive. They are in English only.
BP CalibrationRequired material.1. 500cc vessel 4. Calibrated digital manometer2. Squeeze bulb with one-way valve 5. Tubing and T fittings3. PC with HyperTerminal 6. Serial cable
NOTE: To start HyperTerminal you must have Windows7 95 or higher installed on your computer.
1. From the Windows main screen follow the following sequence:Start !Programs ! Accessories ! Communication ! HyperTerminal
2. HyperTerminal setting are:9600 baud rate, 8 bit word, 1 stop bitno parity, no flow controlANSI character set
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Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 15
3. When you open HyperTerminal you will see a screen similar to the example in Figure2-1. You will be prompted for a connection description. Choose any name. After youtype in a name click OK.
Figure 2-1. Example of a new HyperTerminal connection.
4. The next window you will see will be the window as shown in Figure 2-2. Click on Connect using then click on COM1.
Figure 2-2. Choosing COM1 in HyperTerminal.
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Section 2 Service
5. Set the port settings as shown in the example in Figure 2-3. Now click OK.
Figure 2-3. HyperTerminal Port Settings.
6. Connect the pressure meter, bulb, and 500cc vessel to BP port with “T” connectors asshown in photograph Figure 2-4.
7. Connect the Atlas to PC with serial cable.
8. Turn the Atlas on. Start HyperTerminal on PC. Press the <Enter> key and you should seea Pangea> prompt.
NOTE: Take no more than 3 minutes for the 50mmHg calibration nor more than 3 minutes for the 250mmHg calibration as the Atlas will automatically, as a safety feature, open the blood pressure valve. If this happens you will have to turn the Atlas off then back on again and restart the calibration again.
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Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 17
Figure 2-4. Photo of Atlas BP calibration setup.
50mmHg Calibration1. Enter the following commands at the Pangea prompt.
Pangea> bp valve close <ENTER>Pangea> bp safety off <ENTER>Pangea> bp cal 5000 Do not press <ENTER> yet!
2. Raise the pressure with bulb to as close to 50.00mmHg as possible. Now press <ENTER>.
3. Release the pressure.
250mmHg Calibration1. Enter the following command
Pangea> bp cal 25000 Do not press <ENTER> yet!
2. Raise the pressure with bulb as close to 250.00 mmHg as possible. Now press < ENTER >
3. Enter the following command to save the calibration in the Atlas.Pangea> nvram write <ENTER>
4. Release the pressure.
Calibrated 500cc VolumeT FittingsPressureMeter
Squeeze Bulb
T112854
18 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 2 Service
CO2 Reset (623xx Models Only)
Required material. 1. Watertrap 2. Scrubber
NOTE: The Scrubber looks similar to a watertrap, but it is filled with white granules. The scrubber is included with the 623XX models only.
NOTE: Make sure date and time are correct before performing the CO2 reset.
1. Turn Atlas on. Make sure the watertrap and scrubber are NOT attached to the Atlas.
2. Press the DATE/TIME button on the lower right of the monitor. The Set Date and Timeand Other Options menu will be displayed.
3. Press the CO2/RESP ALARMS Off button. The CO2 Reset screen will appear.
4. You will see the following messages on the CRT.“CO2 Reset”“Install CO2 scrubber”“Press Trend to abort”
5. Install the watertrap to the Atlas. Install the scrubber to the watertrap.
6. You will see the following instructions on the screen.“Warming up” will be flashing on CRT.“May take up to five minutes” on CRT.“Press Trend to abort” on CRT.
7. After about 5 minutes you will see on the CRT.“CO2 Reset”“Reset complete”“Remove CO2 scrubber”“Press the trend button to exit”
8. Remove the CO2 watertrap and scrubber.
9. Press TREND button to return to idle screen.
Replace watertrap after every six hours of use. Treat watertrap and used CO2 sample lines as bio hazard material!
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Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 19
ET CO2 Calibration
Required material:1. Tank of approximately 10% CO2, balance N2 (certified) Blood Gas Mixture.2. Tubing and T connectors.3. Watertrap and scrubber.
1. Make sure the watertrap and scrubber are not attached to the Atlas. Turn the Atlas on.
2. Place the instrument into the Service Mode by pressing the DATE/TIME button. Makesure date and time are correct. Press the LEAD SELECT button.
3. Press SELECT button and scroll down to Calibrate CO2. The message “Install CO2 Scrubber” will appear on the right side of screen.
4. Attach the scrubber to the water trap.
5. Insert the scrubber/water trap assembly into water trap socket. The message “Enter span gas value using Set button 10%” will appear.
6. Press the SET button to change the value of span gas being used. The factory defaultvalue is 10%. Calibrate with a 8% to 12% certified CO2 concentration known to be±0.01%).
7. The message press “BP Start/Cancel” will appear at the bottom right of CRT. Press theBP/Start/Cancel button.
8. If you receive a “Calibration Failed” message at this point, check the date. If date is2022 or above it will fail CO2 calibration.
9. Next you will see a message “Warming up”. After the Atlas warms up you will see amessage “Attach CO2 gas”. Remove the scrubber from the CO2 water trap. Do notremove water trap.
10.Attach the certified source of CO2 gas to the CO2 side-stream sampling tube as per
Figure 2-5 below.
20 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 2 Service
Figure 2-5. Example of CO2 calibration setup.
CAUTION: IMPROPER USE,STORAGE OR HANDLING OF COMPRESSED GAS VESSELS CAN CAUSE DEATH OR INJURY. FOLLOW GAS MANU-FACTURES SAFETY PROCEDURES!
11.Adjust the CO2 regulator just enough to allow a small amount of gas to flow out of thevent (approximately 2 psi).
12.Press the BP START/CANCEL button. The message: “Sampling” will appear on CRT.“CO2 calibration successful” or “CO2 calibration failed” will appear on the CRT display.
13.Press the TREND button to exit.
No-Load Battery Voltage CalibrationNOTE: No-Load Battery Voltage Calibration procedure is for models 622 and 623 only. If you disconnect the battery you must reset time and date after you reconnect the battery.
Specifications: No load battery charge 6.85 VDC
Required materials: DVM
1. Remove the battery and disconnect the battery leads from the Atlas. Use the DVM tomeasure across the connectors, red+ and black-.
2. Adjust the voltage to 6.85 VDC by turning potentiometer R338, located behind the rightbattery jack. Turning clockwise will increase the no-load voltage and counter clockwisewill decrease the no-load voltage.
Vent
WaterTrap
CO2
Adjust Regulator toApproximately 2 psi
Service Section 2
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 21
Battery Voltage CalibrationRequired materials.
1. DC power supply rated: 7 VDC at 5A2. DMM / DVM with 10mV resolution on a 10 DC volt scale.3. PC with HyperTerminal4. Serial interface cable
1. Connect the serial cable to the PC and Atlas.
2. Hyper Terminal Settings are:9600 Baud, 8 bit word, 1 stop bitno parity, no flow controlANSI character setFind HyperTerminal in Windows 95 or higherStart !Programs!Accessories ! Communication! HyperTerminal
NOTE: Make sure the Atlas IS NOT plugged into AC for this calibration procedure.
3. Remove and disconnect the battery from Atlas.
4. Set the power supply to 6.8VDC " 200mV and connect the power supply to the batteryconnector on the Atlas.
5. Turn Atlas on..
6. Reduce the power supply to 6.0VDC and measure the voltage at the battery connector(at the Atlas) to the nearest 10mV.
NOTE: Do not measure at the power supply, since cable resistance will introduce error.
7. At the HyperTerminal prompt type:Pangea> power cal XXXX <ENTER>
NOTE: XXXX represents the measured voltage in millivolts no decimal point. For example, if you measured 6.010VDC at the battery connector, use the command “power cal 6010 <ENTER>”.
8. The Atlas will respond: raw = ZZZZ mV true = 6010 mV OK
NOTE: ZZZZ is the raw uncalibrated reading that the instrument made.
9. Reduce the power supply to 5.6 VDC. You should soon hear the “low battery” alarm.
10.Measure the voltage at the battery connector to the nearest 10mV.
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11.At the HyperTerminal prompt type:Pangea> power cal XXXX <ENTER>
NOTE: XXXX represents the measured voltage in millivolts with no decimal point. For example if you measured 5.590 volts at the battery connector, then you would enter the command “power cal 5590” <ENTER>.
12.The Atlas will respond:raw = ZZZZmV true = 5590 OK
NOTE: ZZZZ is the raw uncalibrated reading that the instrument made.
13.Finish the calibration by typing: Pangea> hw reset <ENTER>
NOTE: This will re-boot the Atlas.
14.Turn the Atlas off and reinstall the battery.
15. Reset time and date.
Printer Print Adjustment
1. Install new paper.
2. Turn Atlas on.
3. Attach an ECG simulator to Atlas and set simulator for a heart rate of 60 bpm, normalsinus rhythm.
4. Press PRINT button. Evaluate the darkness of waveform and text printout.
5. If either need to be changed press DATE/TIME button then press LEAD SELECT buttonto access Advanced Configuration menu.
6. Press SELECT button and scroll down to Printer Test Pattern. Then Press HR ALARMS OFF button
7. Two lines will be displayed:1. Waveform+1282. Text+ 78
NOTE: These two numbers are the factory defaults and are a good starting point if the sys-tem is printing poorly or not at all.
Service Section 2
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 23
8. The left SET button controls the waveform darkness and the right SET button controlsthe text darkness.
NOTE: Pressing the SET button up will increase the number and darken the waveform while pressing the SET button down will decrease the number and will lighten the wave-form.
9. Make changes to the printout as needed.
10.Press Trend button to return to waveform screen.
Temperature CalibrationRequired Material:
1. PC with Windows7 95 or higher 4. 1/4O mono phono jack 2. Atlas serial cable 5. Soldering iron and solder 3. 1k Ohm, 1/2 watt precision resistor 6. Ohm Meter
1. Solder the 1 K Ohm resistor to 1/4” mono phono jack.
2. Measure the resistance at the tip of the phono jack. Record that resistance reading, to twodecimal points.
3. Plug the phono jack into the Atlas.
NOTE: The Atlas will show a temperature reading in the temperature display.
4. Start HyperTerminal on PC.
5. Hyper Terminal Settings are:9600 Baud, 8 bit word, 1 stop bitno parity, no flow controlANSI character setFind HyperTerminal in Windows7 95 or higherStart !Programs ! Accessories ! Communication ! HyperTerminal
6. At the Pangea prompt Type: PANGEA> temp cal XXXXXX <ENTER>
NOTE: XXXXXX is the resistance reading you measured and recorded in milliohms at the tip of the mono phono jack.
Example: If you measure 1000.40 ohms at the tip of the phono jack then you would type temp cal 100040 <Enter>.
7. Wait four seconds then type: PANGEA> temp state <ENTER>. You will see a value returned at the Pangea prompt.
24 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 2 Service
8. Verify that the resistance given by the above command returns a value " 0.5 ohms.
9. Verify temperature accuracy as outlined in Chapter 3, Table 3-2.
Calibration Date Set
NOTE: After calibrating the Atlas you must reset the calibration date. The calibration date is the date you performed the calibration. The calibration date appears in the Service Mode menu. See Figure 2-6 for an explanation of the Service screen.
1. At the Pangea prompt type.
Pangea> nvram set cal_date XXXX <ENTER>
NOTE: XXXX is the number of days from January 1, 1998 until the present date. See APPENDIX E for that number or calculate manually.
Service Section 2
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 25
Explanation of an Atlas Service Screen
Figure 2-6. Example and Explanation of an Atlas Service Screen
Line A Indicates that the Atlas is a model 220 and that the Atlas has a printer. If the Atlas did not have a printer then the text “with printer” would be absent. The date field following indicates the date the Atlas was last calibrated.
Line B starts with a numeric sequence. The first three digits are the model number of the Atlas. The next five numbers are the Atlas serial number. The next sequence,alphanumeric, indicates what software version is currently loaded into the Atlas. The third sequence, alphanumeric, indicates what version boot software is currently loaded into the Atlas.
Line C starts with the SpO2 OEM board used in the Atlas. There are two SpO2 OEM boards used in the Atlas. One is Nellcor and the other is Nonin. The next sequence indicates the model of the SpO2 board. The next sequence, that starts with a letter “V”, is the version soft-ware used with the current SpO2 board. The date following the SpO2 software is the date the OEM loaded the software into the SpO2 board. SpO2 OEM software can not be upgraded. If the most current software is needed, you will need to replace the SpO2 board.
Line D is the CO2 information if your Atlas has CO2 installed. Only models 623 have CO2 installed. If your Atlas does not have CO2 installed then line D will be absent. If your Atlas has CO2 installed then line D will start with CO2 followed by a numeric number. That numeric value is the software loaded into the CO2 board. The next alphanumeric sequence, starting with a “V”, is the version of that software. The next numeric sequence starting with a “#” is the serial number of the CO2 board. The next sequence, a date, is the date the CO2 was last calibrated. The last sequence, a date, is the date the CO2 was reset. CO2 OEM soft-ware can not be upgraded. If the current software is needed, you will have to replace the CO2 board.
Service Mode
Verifyff manometeReset to factory default
Battery testCalibrate CO2
CRT test patternPrinter test pattern
LED testButton test
Display A/D channels
Select a test
Model 220 with printer Cal:27 Nov 2002Sn: 62304064 Sw: BB.025000 Boot: AA.01.0000SpO2: NELLCOR MP506 V1.8.0 6/21/02CO2 1.0 V3.00 #2542 Cal: 27 Nov 2002 14 Nov 2002
Press the Trend button to exit
0.00
A
B
C
D
26 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 2 Service
Table 2-3. Software Revision Table.
Model Operating System Boot loader Nellcor Nonin Pryon621S0 AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7621S0 BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7621S0 BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7621S0 BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V7
621N0 BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V1.8.1.0, 10/14/02
621SP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7621SP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7621SP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7621SP BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V7
621NP BB.02.5000, 10/14/02 AA.01.0000, 6/20/02 V1.8.1.0, 10/14/02
622S0 AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7622S0 BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7622S0 BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7622S0 BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7622S0 BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V7
622SP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7622SP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7622SP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7622SP BB.02.5000, 6/14/02 AA.01.0000, 6/20/99 V7
622N0 AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622N0 BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622No BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622N0 BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V 1.8.1.0 10/14/02
622NP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622NP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622NP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V 1.2.0.0 10/14/02622NP BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V 1.8.1.0 10/14/02
623SP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7 0.E V1.00623SP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7 0.E V1.00623SP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7622SP BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V7
623NP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97 0.E V1.00623NP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97 0.E V1.00623NP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97623NP BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V 1.8.1.0 10/14/02
Service Section 2
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 27
Software Upgrade ProcedureNOTE: The following procedures are required to upgrade the software on a fully function-ing Atlas or to reload software after replacing the CPU board. The download utility “atlas_dl.exe” loads the following files automatically.
1. atlas.out.gz2. nvram_common.txt3. nvram_(model#).txt 4. nvram_(language).txt
“Atlas_dl.exe” will also query the Atlas to determine what model number the Atlas is and what language to download.
Equipment or supplies required:1. PC with Windows7 95 or higher2. Atlas serial cable3. File: atlas_dl.exe (Included in the Atlas Repair Software listed in Table2-2.)
NOTE: Make sure you have HyperTerminal turned off or the following utility download will not work!
1. Run the program atlas_dl.exe from the CD or copy the file to your hard drive and run theprogram from there.
2. Connect the serial cable between the Atlas and the PC s’“COM1 port”.
3. Turn your computer on and locate the “atlas_dl.exe” file.
4. Double left click on the “atlas_dl.exe” file.
5. When the file starts to download, the CRT will go blank on the Atlas.
NOTE: Do not use the computer while the program is downloading.
6. After down loading is complete, check all alarm settings and all user advanced configuration settings since these are RESET by this utility software download procedure.
NOTE: Stop here if you are just upgrading software on a fully functional Atlas monitor or if you have replaced the CPU board.
NOTE: If you have replaced the MAIN BOARD then you MUST continue with the next procedure (DOWNLOADING NVRAM FILES).
NOTE: Perform the following NVRAM downloading procedure if you have replaced the MAIN BOARD. The NVRAM resides on Main Board.
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Section 2 Service
Down Loading NVRAM FilesRequired Materials.
1. Computer with Windows7 95 or higher.2. The latest Atlas repair software. Call your local Welch Allyn representative.
1. Once you have procured the latest Atlas Repair Software, you will be able to run the programs straight from the CD or copy the files to your hard drive.
NOTE: Through HyperTerminal you will need to load the following files:1. nvram_cal_init.txt2. nvram_common.txt3. model# of Atlas
3.1.You will load “nvram200.txt” if your Atlas is a model 621xx.3.2.You will load “nvram210.txt” if your Atlas is a model 622xx.3.3 You will load “nvram220.txt” if your Atlas is a model 623xx.
4. “language.txt”Any combination of or all of the following files4.1 “nvram_english.txt” for the English language4.2 “nvram_french.txt” for the French language4.3 “nvram_german.txt” for the German language4.4 “nvram_spanish.txt” for the Spanish language4.5 “nvram_potuguese.txt” for the Portuguese language4.6 “nvram_italian.txt” for the Italian language4.7 “nvram_chinese.txt” for the Chinese language4.8 “nvram_japanese.txt” for the Japanese language
5. printer.txt (if fitted with a printer), or no_printer.txt. (if not fitted with a printer)
NOTE: After loading the preceding files you, must then type the following commands atthe Pangea prompt.
1. “nvram set serial xxxxx” where xxxxx is the serial number of the Atlas monitor.2. “nvram write” writes the information to memory.3. “hw reset” performs a hardware reset.
2. Connect the serial cable between the Atlas and the PC COM1 port.
3. Open HyperTerminal program on PC.Hyper Terminal Settings are:
9600 Baud, 8 bit word, 1 stop bitno parity, no flow controlANSI character setFind HyperTerminal in Windows7 95 or higherStart !Programs ! Accessories ! Communication ! HyperTerminal
Service Section 2
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 29
4. Turn Atlas on. You should see the Pangea prompt. See example in Figure 2-7.
Figure 2-7. Pangea prompt in HyperTerminal.
5. Scroll over to “Transfer” and then scroll down and choose “Send Text File”. See example in Figure 2-8.
Figure 2-8. Choosing “Send Text File” in HyperTerminal.
6. Another window will then appear and prompt you for the location of the files. Doubleleft click on that folder to open that directory. You can also run these programs from theCD. See example in Figure 2-9.
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Section 2 Service
Figure 2-9. Choosing directory where NVRAM files are stored.
7. Once the folder is open, open the file “nvram_cal_init.txt” file by double left clicking onthat file or by high lighting the file and then click on the Open button. See example inFigure 2-10.
Figure 2-10. Choosing the nvram_cal_init.txt file.
Remember that after you have download the files in this section and you must complete this entire “Downloading NVRAM files” section, that you must perform a complete calibration on the Atlas monitor.
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Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 31
NOTE: After the nvram_cal_init.txt has executed you should see a Pangea screen similar to window as shown in Figure 2-11.
Figure 2-11. Pangea screen after opening the nvram_cal_init.txt file.
8. From your pangea window choose Transfer then choose Send Text File.
9. Open the directory where the file nvram_common.txt is located or open from the CD.
10.Double left click on nvram_comm.txt file or highlight the file and then choose Open.
NOTE: After opening the nvram_common.txt file you should see a screen similar to the window shown in Figure 2-12.
Figure 2-12. Pangea screen after opening the nvram_common.txt file.
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NOTE: Next you will download the model# of the Atlas by choosing only one of the three following files.
1. If you have an Atlas model 621 then you will only download the file nvram200.txt.2. If you have an Atlas model 622 then you will only download the file nvram210.txt. 3. If you have an Atlas model 623 then you will only download the file nvram220.txt.
11.Open the directory where the model number files are located or open from CD.
12.Open the file by double left clicking on the file that represents the model number of theAtlas you are working on or highlight that file then choosing Open.
NOTE: After opening the Atlas model# file you should see a Pangea screen similar to the window as shown in Figure 2-13.
Figure 2-13. Pangea prompt after opening the model# file.
Service Section 2
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 33
NOTE: Next you will download the language(s) that you want the Atlas to store in it’s Advanced Configuration menu for languages. You can have one or all the languages loaded in the Atlas. Listed in Table 2-4 are the language(s) choices and the files you will need to download to have the language(s) loaded in the Atlas. Each language you want loaded in the Atlas will require that the file associated with that language be loaded.
Table 2-4. Files needed to download language(s).
13.Open the directory where the language files are located or open from CD.
14.Double left click on language.txt file or highlight the file and then choose Open.
NOTE: After you download a language.txt file you should see a Pangea screen similar to Figure 2-14.
Figure 2-14. Pangea screen after loading a language file.
Language File needed to download
English nvram_english.txt
French nvram_french,txt
Spanish nvram_spanish.txt
German nvram_german.txt
Portuguese nvram_portuguese.txt
Italian nvram_italian.txt
Chinese nvram_chinese.txt
Japanese nvram_japanese.txt
34 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 2 Service
NOTE: Next you tell the Atlas if it does or does not have a printer.1. If the Atlas has a printer you will download the file nvram_printer.txt.2. If the Atlas does not have a printer then you will download the file nvram_no_printer.txt.
15.Open the directory where the printer.txt files are located or open from CD.
16.Double left click on the printer file or the no_printer file or highlight the printer file or the no_printer file and then choose Open.
NOTE: After you have downloaded the printer or no_printer file you should see a Pangea screen similar to the window as shown in Figure 2-15.
Figure 2-15. Pangea screen after downloading the nvram_printer.txt file.
NOTE: The next three commands will require that you actually type the command at the Pangea prompt.
NOTE: XXXXX on line 17 is the Atlas 5 digit serial number. The serial number is located on the bottom of the Atlas. Make sure that you have a space between the command serial and the five numbers you are entering.
17.At the Pangea prompt type the following command “nvram set serial XXXXX”<ENTER>
NOTE: After you have typed the nvram set serial XXXXX command and hit ENTER you should see a Pangea screen similar to the example in Figure 2-16.
Service Section 2
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 35
Figure 2-16. Pangea screen after you have downloaded the nvram set serial command.
NOTE: To finish downloading the NVRAM files, type the next two commands at the Pangea prompt.
18.At the Pangea prompt type the command nvram write <ENTER>.
19.At the Pangea prompt type the command hw reset <ENTER>.
NOTE: The hw reset command will reboot the Atlas.
NOTE: The firmware is not up grade able on the OEM boards (SpO2 and CO2) boards. If a higher version software is needed, then you will need to replace the OEM board.
Remember that after you have download the files in this section and you must complete this entire “Downloading NVRAM files” section, that you must perform a complete calibration on the Atlas monitor.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 37
NOTE: Review customer complaint and determine if it is safe to plug in the Atlas monitor into AC power and if it is safe to turn on!
Power on Self Test1. Plug in Atlas into AC power with no sensors attached. Verify that the AC~ LED indictor
is lit. Install paper in printer if fitted.
2. Turn on power and verify the following:1. Green light in power button.2. Loud beep when Power On button pressed.3. Three dashes in SYSTOLIC.4. Three dashes in DIASTOLIC.5. Two dashes in SpO2 (takes several seconds after BP dashes come on).6. Three dashes in PULSE (takes several seconds after BP dashes come on).7. Single bar at the bottom of Plethysmograph.8. No lights in TEMP.9. No lights in ALARMS OFF buttons.10. X lit on AUTO.11. CRT display may comes on slowly if cold or quickly if still warm from last use.12. May see version string in center if comes on quickly. It is not a problem if not seen because it comes on slowly.
3. On the CRT you should see:1. Three dashes for Heart Rate2. Heart symbol3. Lead select symbol4. Scale bar5. One or two lines of dashes for waveforms – depends upon settings.6. Three dashes for MAP – or blank, depending upon settings.7. Error message(s) at bottom of screen?
4. On models 622 or 623, disconnect AC cable. You should see no change except theAC~ LED indicator will not be lit. If you see warnings of a low, very low or depletedbattery, or if the system turns off by it’s self, plug the Atlas back into the AC outlet andlet the unit charge with unit turned off. Repeat test in 2 hours.
5. Plug the monitor back into AC.
38 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
Menu Functional Test1. Press DATE/TIME button to enter menu page. Press TREND button to access the
Advanced Configuration menu.
2. Write down all configuration settings so that they can be reset to customer preferenceslater. If you have a printer press the PRINTER button to print out customer configurationsettings.
3. Set language to your native tongue if necessary to allow you to write down the othersettings. The top item is always the language, press either SET buttons to step throughlist.
4. Press TREND button to return to idle screen. Press DATE/TIME button and verify thatdate and time are correct. Set date and time if necessary.
NOTE: An incorrect date may indicate a battery problem. If date was incorrect, turn off unit, disconnect AC power cable, wait 5 minutes then reconnect the power cable. Turn Atlas on. Check date again. If date comes back incorrect on model 621 then replace main board. On model 622 and 623, if battery was not dead then replace main board.
5. Press DATE/TIME button to return to waveform screen if needed.
6. Press DATE/TIME button then press LEAD SELECT button to access service mode
7. Version/configuration data is in lower half of menu, write it all down.
8. Press SELECT button to highlight reset to factory defaults.
9. Press BP START/CANCEL button to reset configuration.
10. Press TREND button to return to idle screen.
11. Press DATE/TIME button then press TREND button to access the Advanced Configuration menu.
12. Set language to your native tongue if necessary
NOTE: We have just reset the monitor to factory defaults. Compare settings to factorydefaults appropriate for the country in Operator manual. If the factory defaults do notmatch then that may indicate a memory problem. Changing only the language should not change any of the other factory default settings.
13. Press DATE/TIME button then press LEAD SELECT button to access service mode.
14. Press SELECT button to highlight CRT test pattern.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 39
15. Press BP START/CANCEL button to show test pattern. Examine display. Press any key toend display.
16. Press Select button to highlight Printer test pattern (if fitted). Press BP START/CANCELbutton to start test pattern. Printer should print a test pattern. Press any key to end display. Examine printout.
17. Press SELECT button to highlight LED test. Press AUTO button to turn on all LEDs.Press BP START/CANCEL button to show automatic test pattern. Watch for a while,look for glitches in pattern. Press SET button to go to manual mode and step through individual segments if needed to observe a problem.
18. Press SELECT button to highlight Button test. Press BP START/CANCEL button to start test. Press every button on system, press BP START/CANCEL button last. Verify that buttons match up with their names and that all buttons are functional.
NOTE: If name does not correspond to the button pushed then this may indicate memory corruption. You may need to replace the main board.
19. Press SELECT button to highlight Display A/D channels. Press SET button and writedown all values for each of the four screens for later review. Press TREND button toreturn to Idle screen.
40 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
BP Test1. Press DATE/TIME button then press TREND button to access the Advanced
Configuration menu. Press SELECT button to highlight Initial pressure. Press SET buttonto change Initial pressure to 280 mmHg. Press SELECT button to highlight MAP. PressSET button to change MAP to Yes. Press TREND button to return to idle screen.
2. Connect the BP port to the BP simulator. Set the simulator for a normal reading(140/80, 100BPM, NSR). Press BP START/CANCEL button. Atlas should start topump and display a manometer value in SYSTOLIC LED. This value should trackand be very close to pressure displayed by manometer on BP simulator (if fitted).Largest number shown in SYSTOLIC LED should be very close to the initial pressure setting recorded above from Advanced Configuration. System should start steppingdown pressure, showing step values in SYSTOLIC LED display. It then should displaythe correct SYSTOLIC and DIASTOLIC values. System may show MAP value dependingupon country language setting.
3. Press BP START/CANCEL button. System should start pump, display manometervalue in SYSTOLIC LED. This value should track and be very close to pressuredisplayed by manometer in BP simulator (if fitted). Largest number shown inSYSTOLIC should be very close to the Initial pressure setting of 280 mmHg. Ifpressure shown exceeds 300 mmHg then re calibrate the Atlas BP.
4. System should start to step down pressure, showing step values in SYSTOLIC LED andthen display correct SYSTOLIC and DIASTOLIC values. System should show MAPvalue. MAP value should match what is shown by simulator.
5. Set simulator to (120/70, 60 (beats per minute)bpm, NSR).
6. Press the AUTO button. The X manual BP cycle indicator will go out and the 1 minuteauto BP cycle indicator will flash for 10 seconds. 20 seconds after the 1 minute auto BPcycle indicator stops flashing, BP measurement starts.
7. Verify the BP reading. If BP measurement incorrect recalibrate.
8. No less than 30 seconds after completing the measurement another measurementshould start. While it is pumping up, press the BP START/CANCEL button.Measurement should stop immediately and pressure should be dumped (as seen onthe simulator manometer).
9. Press AUTO button and X manual BP cycle indicator should light (not flashing).
10. Disconnect the tubing from the BP port on the Atlas. Press BP START/CANCELbutton and note the time (to the second) when the Atlas aborts the BP cycle and givesyou an alarm. It should take no longer than 1 minute. Turn Atlas off.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 41
Static Manometer Accuracy TestRequired materials.
1. Serial interface cable 2. PC with HyperTerminal (Windows 95 or above)3. 500cc vessel with inflation system. 4. Calibrated manometer
1. Turn computer on and activate Hyper terminal.Hyper Terminal Settings are:9600 Baud, 8 bit word, 1 stop bitno parity, no flow controlANSI character setStart !Programs ! Accessories ! Communication ! HyperTerminal
2. Turn Atlas on. Refer to Figure 2.1 in Section 2 for inflation setup.
3. Enter the following commands at the PANGEA> prompt.PANGEA> bp safety off <ENTER>PANGEA> bp valve close <ENTER>
4. Pressurize the Atlas monitor to the applied pressures in Table 3-1.
5. To compare the applied pressure to the transducer readings use the following command.PANGEA> bp press <ENTER>
6. Verify that the primary transducer and secondary transducer are within the specifications listed in Table 3-1.
NOTE: The Atlas monitor will return a response to the computer screen as follows.If you tested at the 50mmHg pressure you would receive a message similar to: px = 5279,sx = 5305 x 0.01. Where px is the primary transducer and 5279 = 52.79 mmHg and sx is the secondary transducer and 5305 = 53.05 mmHg.
Table 3-1. Transducer pressure table.
Applied Pressure
Primary Transducer
Safety Transducer
0 mmHg "0.75 mmHg "1.0 mmHg
50 mmHg "1.5 mmHg "1.5 mmHg
150 mmHg "1.5 mmHg "4.5 mmHg
250 mmHg "1.5 mmHg "7.5 mmHg
42 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
BP Leak Test NOTE: Unit must not leak more than 5 mmHg in a 15 second interval while attached to a 100cc test cavity pressurized at 50 mmHg, 150 mmHg and 250 mmHg.
Required Materials: 100cc test vessel (+10cc/-0cc), stopwatch, squeeze bulb, calibrated manometer.
1. Connect Atlas to 100cc test vessel and calibrated manometer as shown in Section 2,Figure 2.1.
2. Turn Atlas on.
3. Press DATE/TIME button then press LEAD SELECT button to access the Service Mode.
4. Press SELECT button and choose Verify manometer.
5. Pressurize the Atlas with squeeze bulb to 50mmHg and allow reading to stabilize.
6. Observe pressure for 15 seconds.
6. Unit should not leak more than 5mmHg during this time.
7. Repeat this process at 150mmHg and 200mmHg.
Over 15 mmHg TestNOTE: Atlas hardware must detect if the pneumatic system has been pressurized greater than 15 mmHg for more than 155 seconds but less than 180 seconds.
Required Materials: 500cc test vessel (+10cc/-0cc), stopwatch, squeeze bulb, calibrated manometer.
1. Connect Atlas to 500cc test vessel and calibrated manometer as shown in Section 2,Figure 2.1.
2. Turn Atlas on. Press DATE/TIME button then press LEAD SELECT button to access theService Mode. Press SELECT button and choose Verify manometer.
3. Pressurize the Atlas with squeeze bulb to any pressure above 15 mmHg and maintainthat pressure during the test. Start the stop watch.
4. Verify that the valve opens and pressure drops between 155 seconds and 180 seconds.
5. Turn Atlas off.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 43
BP Dump Verification Test1. Connect the Atlas to a 500 cc vessel as shown in Section 2, Figure 2.1.
2. Turn Atlas on.
3. Press DATE/TIME button then press LEAD SELECT button to access the Service Mode.
4. Select Verify manometer.
5. Pressurize the Atlas to just over 260 mmHg.
6. Allow reading to stabilize for 15 seconds.
7. Ensure the reading is still over 260 mmHg.
8. Start the stop watch when you press the SELECT button. When the SELECT button ispressed the Atlas will start a pressure dump.
9. Verify that the pressure drops to below 15 mmHg within 10 seconds.
Hardware Fail Safe TestsNOTE: Atlas hardware must detect over pressure on unit pneumatic system between 296.0 mmHg and 330.0 mmHg.
1. Connect the Atlas for testing as shown in Section 2, Figure 2.1
2. Turn Atlas on.
3. Press CLOCK/DATE button then press LEAD SELECT button to access Service Mode.
4. Press SET button to highlight the Manometer.
5. Pump system up and record at what pressure the Atlas dumps.
44 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
ECG/Respiration Test
NOTE: Simulator should support ECG impedance respiration.
1. Cycle power on Atlas, connect a 5 lead ECG cable set to the simulator. Configure thesimulator for NSR, 100 bpm and set the impedance respiration rate to 20.
2. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu.
3. Press SELECT button to highlight ECG lead set and press SET button to select 5 wire.
4. Set ECG gain to Automatic, ECG speed to 25mm/s, ECG bandwidth to Monitor, Secondtrace selection to ECG.
5. Press TREND button to return to idle screen.
6. Verify you see: 1. ECG cascading onto second line 2. Scale bar on top left of CRT 3. Heart rate displayed as set on simulator 4. Lead Selected = II 5. Pulse tone high pitched
7. Press LEAD SELECT button and step through each of the lead settings.(I,II,III,aVR,aVL,aVF,V)
8. Verify that you see a different ECG waveforms for each lead selected. Heart Rate will go to dashes and alarms on some leads.
9. Set lead selected to II.
10. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu.
11. Change Second trace selection to Respiration. Press TREND button to return to idlescreen.
12. Verify that you see:1. ECG on top line2. Scale bar on left of top line3. Heart rate displayed as set on simulator
4. Lead Selected = II5. Pulse tone high pitched6. Respiration trace on second line and rate as set on simulator7. Respiration rate displayed on CRT as set on simulator.
13. Disconnect ECG simulator.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 45
SpO2 Test
1. Turn SpO2 alarms on.
2. Connect SpO2 cable to simulator.
3. Set simulator pulse rate to 60 beats/minute and verify that pulse rate is 60 ±3 beats/minute or 3%, whichever is greater.
4. Set SpO2 between 70% and 100% and verify that SpO2 is accurate ±2 digits.
Temperature Test1. Without anything connected to the temperature connector on the Atlas, verify that the
temperature LED is blank.
2. Using Table 3-2 below, connect the resistors to a 1/4 inch male mono plug and verifytemperature readings.
Table 3-2 Resistor and temperature reference.
3. Connect the temperature probe to the Atlas monitor. You should see the display readroom ambient temperature. Disconnect the probe and verify you see dashes is the display and that there are no alarms.
CO2 Functional Test
1. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu
2. Set Second trace selection to CO2.
3. Press TREND button to return to idle screen.
4. Insert watertrap with tubing attached.
46 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
5. Verify that you: 1. Hear pump motor start. 2. See solid line waveform on lower trace. 3. See dashes in Respiration Rate. 4. See dashes in mmHg (or % or kPa, as configured).
6. Breathe gently and repeatedly over end of tubing.
7. Verify that you:1. See waveform within seconds of breathing.2. See respiration rate non zero within one minute.3. See CO2 concentration non zero within one minute.
Battery Functional Test1. System must have been plugged in for 24 hours to guarantee that the battery is fully
charged. But, for now we can do a functional test as follows.
2. Press DATE/TIME button then press LEAD SELECT button to access Service Modemenu.
3. Press SELECT button to highlight Battery test.
4. Verify that the menu reports: 1. Battery Low Time XXX 2. Battery Dead Time YYY
NOTE: These are the results from the last battery test. The Battery Low Time is the time in hours and minutes that the battery ran in the last test until the Low Battery alarm started, and the Battery Dead Time is the time from the beginning of the Low Battery Alarm until the system turned itself off when the battery voltage reached the cutoff level.
NOTE: 2:08 means 128 minutes which is the default setting indicating a battery test has never been made before.
5. Write down the Battery Low Time and Battery Dead Time.
6. Unplug AC cord to start battery test.
7. The timers will begin the moment you unplug the AC cord. Leave the system on until itpowers down by itself automatically. Plug Atlas into AC and turn the Atlas on, enter theService Mode menu, select Battery Test again, and write down the new values. Comparethese to the previous values, and to the minimum specification:
1. Battery Low Time = 1 Hour2. Battery Dead Time = 10 Minute minimums
8. Replace the battery if performance falls below specification.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 47
Printer Functional TestNOTE: Configuration settings for printing are different for text pages than for waveforms.
1. Connect ECG simulator to generate a sample waveform.
2. Press PRINT button and look at waveform printout. Look for darkness, thickness oflines, legibility of text, blurring, “blooming” of text.
3. If waveform or printed text needs to be darker or lighter, go to Section 2, page 10 forprinter calibration.
Print on Alarm Test1. Turn the Atlas on.
2. Press the DATE/TIME button then press the TREND button to access Advanced Configuration menu. Press the SELECT button and scroll down to Print on Alarm. Pressthe SET button and set Print on alarm to No.
3. Connect an ECG simulator to the Atlas. Set the ECG rate on the simulator to 60 bpm,normal sinus rhythm.
4. Press left SELECT button and the HI heart rate alarm parameter will flash. Set the highheart rate alarm to 110 bpm on the Atlas and press the SELECT button again and the lowheart parameter will flash. Press SELECT button one more time to return to the defaultscreen.
5. Set the ECG simulator to heart rate to 120 bpm.
6. Verify that you hear the audio alarm and that the printer is not printing.
7. Set the ECG simulator to 60 bpm and make sure that the alarm condition has cleared.
8. Press the DATE/TIME button then press the TREND button to access Advanced Configuration menu. Press the SELECT button and scroll down to Print on Alarm. Pressthe SET button and set Print on alarm to Yes.
9. Set the ECG simulator to 50 bpm.
10.Verify that the printer printed a 15 second strip.
Software/Firmware1. Review versions written down earlier and compare to latest available. Make sure that all
components are compatible with each other. See section 2, page 26, Table 2-3.
48 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
ECG Alarms Test1. Turn the Atlas on. Verify that you hear the power on tone.
2. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu. Press SELECT button and scroll down to Second Trace. Press SET button and setthe second trace to ECG.
3. Connect ECG simulator to the Atlas. Set the ECG rate on simulator to 60 bpm,normal sinus rhythm.
4. Verify you hear the heart rate beep at a constant high pitch.
5. Press SpO2 - + button “-“ 8 times. Should get quieter and finally silent.
6. Press DATE/TIME button then press PRINT button to save settings.
7. Turn system off and back on.
8. Verify pulse tone is silent even though heart rate is shown.
9. Press SpO2 volume button “+” 8 times. Should get audible tone and then louder.
10. Disconnect ECG cable.
11. Verify you hear audio alarm and see error message “ECG Lead fault” and that you see thethree LED bars flash where the heart rate was on the CRT.
12. Press HR ALARMS Off button.
13. Verify that the audio alarm stops and that the visual alarm on the CRT remains.
14. Press HR ALARMS OFF button. Connect ECG simulator to the Atlas and set simulatorto normal sinus, 60 bpm.
15. Press left SELECT button and the HI heart rate alarm parameter will flash. Set the highheart rate alarm to 55 bpm on the Atlas and press the SELECT button again and the lowheart parameter will flash. Press SELECT button one more time to return to the defaultscreen.
16. Verify that you hear the audio alarm and that you see the numeric value flashing inthe upper right portion of the monitor.
17. Return the high alarm limit to 120 bpm and press SELECT button. Verify theaudio alarm should is silent and the numeric visual alarm is flashing.
18. Press SELECT button twice. Verify the numeric low alarm parameter is flashing.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 49
19.Set the LOW alarm for 65 bpm by pressing the up SET button. Press SELECTbutton.
20. Verify that you hear the audio alarm and that you see the numeric value is flashing inthe upper right portion of the monitor.
21. Turn the Atlas off.
50 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
Respiration Alarms Test1. Turn Atlas on.
2. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu. Press SELECT button to scroll down to Second Trace. Press SET button and setsecond trace to respiration. Press TREND button to return to default screen.
3. Set respiration on simulator to 20 respirations/minute and connect to the Atlas.
4. Press left SELECT button three times and set the hi respiration alarm to less than 20.Wait 10 seconds and the CRT will return to the default screen.
5. Verify that you hear the audio alarm and that the respiration numeric value on the CRTis flashing.
6. Press CO2/RESP ALARMS off button.
7. Verify that the audio alarms are silent, the visual numeric alarm is flashing andthat the red LED in the CO2/RESP ALARM off button is lit.
9. Press left SELECT button three times to access hi respiration alarms and set hi alarm to30.
10. Wait ten seconds and the CRT will return to the default screen.
11.Press CO2/RESP ALARM off BUTTON then press left SELECT button four times toaccess low respiration alarms and set low respiration alarms to 25.
12. Wait 10 seconds and CRT will return to the default screen.
13.Verify that you hear the audio alarm and that the respiration numeric value on the CRTis flashing.
14. Press CO2/RESP ALARMS off button.
15.Verify that the audio alarms are silent, the visual numeric alarm is flashing andthat the red LED in the CO2/RESP ALARM off button is lit.
16. Turn Atlas off.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 51
SpO2 Alarm Test
1. Turn Atlas on.
2. Attach SpO2 to a simulator and set for 95% SpO2.
3. Verify that you hear a pulse rate beep and that it is a different pitched tone than theECG pulse beep.
4. Change SpO2% setting on the simulator. Verify that tone changes pitch up or downtracking simulator setting.
5. Press lower far right SELECT button until SpO2 LO is flashing, press right SET buttonUP to change SpO2 LO setting to 99.
6. Wait until the SpO2 LO LED stops flashing.
7. Verify that you hear the SpO2 LO limit alarm.
8. Press Alarm Volume button “-“ eight times. Verify tones gets quieter but not silent.
9. Press Alarm Volume button “+“ eight times. Verify the tone gets louder.
10.Disconnect SpO2 cable from simulator and verify that the visual alarm “SpO2 cablenot detected” is displayed on the bottom left side of CRT. Verify that you hear theaudio alarm.
11.Press SpO2 ALARMS Off button.
12.Verify that the audio alarm sound is silent, that you do not see the visual alarm message “SpO2 cable not detected” on the CRT and that the LED in the SpO2 ALARMS OFF button is on.
13.Turn Atlas off.
14.Disconnect SpO2 cable from Atlas.
52 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
Silence Alarm Test1. Turn Atlas on.
2. Press DATE/TIME button then press TREND button to access Advanced Configuration menu. Press SELECT button until Silence Duration is highlighted. Press SET button until 90 seconds is highlighted. Press TREND button to go todefault screen.
3. Connect ECG simulator to the Atlas. Set the ECG rate on simulator to 60 bpm, normalsinus wave.
4. Press left SELECT button once and set the HI alarm to 55 bpm.
5. Wait until you hear the audio alarm.
6. Press SILENCE button and start stopwatch. Verify that the alarm returns at 90seconds.
7. Turn Atlas off.
CO2/RESP Test
1. Turn Atlas on.
2. Press DATE/TIME button then press TREND button to access the Advanced Configuration menu.
3. Set Second trace selection to CO2. 4. Press TREND button to return to idle.
5. Insert CO2 watertrap with hose.
6. Breath into hose until a waveform is displayed.
7. Remove CO2 watertrap .
8. Verify you hear the audio alarm and that you see in the visual alarm “ CO2 watertrap notdetected” in the bottom left portion of CRT.
9. Press the “ CO2/RESP ALARMS off ” button. Verify that the audio alarm goes silent, thevisual alarm goes out and the red LED in the CO2/RESP ALARMS off button is lit.
10.Turn Atlas off.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 53
Blood Pressure Alarm Test1. Turn Atlas on.
2. With no hose connected to the BP port, press BP Start/Cancel button.
3. Place finger over BP port. This will block the flow causing the Atlas to detect an overpressure.
4. Verify that you hear the audio alarm, that the visual alarm “ Check Blood Pressure Cuff “appears in the lower left portion of the CRT and that the SYSTOLIC and DIASTOLICLED displays are flashing.
5. Press the BP ALARMS OFF button.
6. Verify the audio alarm is silent, the visual alarms have turned off and that the red LED inthe BP ALARMS OFF button is lit.
7. Press the BP ALARMS OFF button then press the BP START/CANCEL button twice.
8. Press BP START/CANCEL button and let Atlas run without anything attached to the BPport.
9. Verify at 60 seconds that you hear the audio alarm and that the visual alarm “ Check Blood Pressure Cuff “ appears in the lower left portion of the CRT and that the SYSOLIC
and DIASTOLIC LED displays are flashing.
10.Press the BP ALARMS OFF button.
11.Verify the audio alarm is silent, the visual alarms are still off and that the red LED inthe BP ALARMS OFF button is lit.
12.Press the BP ALARMS OFF button then press the BP START/CANCEL button twice.
13.Connect a BP simulator to the Atlas BP port. Set the simulator for a normal reading (140/80, 100 bpm, normal sinus rythym).
14.Press the right SELECT button twice and the current SYSTOLIC HI alarm value will beflashing.
15.Press the SET button to set SYSTOLIC HI alarm to 130.
16.Press BP START/CANCEL button.
17.Verify that you hear the audio alarm and that the numeric value in the SYSTOLIC LEDdisplay is flashing.
54 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
18.Press the BP ALARMS OFF button.
19.Verify the audio alarm is silent, the numeric value in the SYSTOLIC LED display is stillflashing and that the red LED in the BP ALARMS OFF button is lit.
20.Reset the SYSTOLIC HI alarm to 200 (factory default). Press BP ALARMS OFF button.
21.Press the right SELECT button three times and the numeric value in the SYSTOLIC LOalarm LED display will be flashing.
22.Press the SET button to set the SYSTOLIC BP LO alarm to 160.
23.Press BP START/CANCEL button.
24.Verify that you hear the audio alarm and that the numeric value in the SYSTOLIC LEDdisplay is flashing.
25.Press the BP ALARMS OFF button.
26.Verify the audio alarm is silent, the numeric value in the SYSTOLIC LED display is stillflashing and that the red LED in the BP ALARMS OFF button is lit.
27. Reset SYSTOLIC LO alarm to 70 (Factory default). Press BP ALARMS OFF button.
28.Press right SELECT button four times and the numeric value in DIASTOLIC HI alarm LED display will be flashing.
29.Press the SET button and set DIASTOLIC HI alarm to 70.
30.Press BP START/CANCEL button.
31.Verify that you hear the audio alarm and that the numeric value in the DIASTOLIC HILED display is flashing.
32.Press the BP ALARMS OFF button.
33.Verify the audio alarm is silent, the numeric value in the DIASTOLIC LED display is stillflashing and that the red LED in the BP ALARMS OFF button is lit.
34.Reset DIASTOLIC hi alarm to 155 (Factory Default). 35.Press right SET button five times and the numeric value in the DIASTOLIC LO alarm
LED display will be flashing.
36.Press SET button and set DIASTOLIC LO alarm to 90. Press BP ALARMS OFF button.
37.Press BP START/CANCEL button.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 55
38. Verify that you hear the audio alarm and that the numeric value in DIASTOLIC LED display is flashing.
39. Press the BP ALARMS OFF button.
40. Verify the audio alarm is silent, the numeric value in the DIASTOLIC display is still flashing and that the red LED in the BP ALARMS BUTTON is lit.
41. Reset DIASTOLIC LO alarm to 50 (Factory Default). 42. Turn Atlas off.
56 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
Table 3-3. Atlas trouble shooting.
Failures Possible Solutions
Power on:
Unit does not power up, no AC on LED, no Power on LED.
1 Check AC power cord.
2 Verify connection from power supply to main board.
3 Verify +12V output from power supply.
4 Replace Power Supply.
5 Check Cable from main board to display board.
6 Replace Display board.
Unit does not power up - AC and Power on LED on.
1 Check that the CPU board is fully seated.
2 Replace CPU board.
3 Check for conformal coating in J4 header - replace board if coating is found.
4 Replace Main board.
5 Replace Display board.
Unit powers up intermittently or Power button sticks or cannot duplicate power on problem But unit passes burn in.
1 Remove flashing on Bezel at power button.
2 Check for severely tipped power button LED on display board.
Unit powers up - but no image on CRT. 1 Check for conformal coating in J4 header - replace board if coating is found.
2 Replace CPU board.
3 Check for correct installation of connection from main board to deflection board. If installed with pin 1 in the pin 2 socket deflection board will be damaged. If installed with pin 1 out of socket deflection board will be OK.
4 Replace CPU assembly.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 57
Table 3-4. Atlas trouble shooting.
Failures Possible Solutions
Display:
Segment out, LED out, Buttons do not work.
1 Replace Display board.
All or most segments stay on at power up.
1 Replace CPU board.
2 Check cable from Display board to Main board.
3 Replace Power Supply.
CRT:
CRT image rotated or poor alignment. 1 Rotate yoke and/or adjust magnets.
Only see a dot in the center of the screen.
1 Check cable from yoke to CRT board.
Only see a horizontal line in the center of the screen.
1 Check cable from yoke to CRT board.
2 Replace Deflection board.
No image - CRT to Main board connection OK.
1 Check flex-cable from Deflection board to tube.
2 Check high voltage anode connection.
3 Replace Deflection board.
4 Replace tube.
5 Replace CPU board.
No image - Glow at bottom of screen. 1 Check for conformal coating in J4 header - replace board if coating is found.
2 Replace CPU board.
Dark vertical scan lines in image. 1 Replace CPU board.
58 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
Table 3-5. Atlas trouble shooting.
Failures Possible Solutions
Printer:
Motor does not run. 1 Check that the unit is configured for printer. (CRT image will freeze for 10 seconds if configured for no printer.)
2 Check cable from printer PCB to motor.
3 Check cable from printer PCB to Main board.
4 Check motor gear alignment to first plastic gear.
5 Check for paper jam.
6 Replace printer PCB.
7 Replace CPU.
Motor runs or chatters - paper does not advance.
1 Check for missing dowel pin in roller.
2 Check for missing bearings/gears.
3 Replace printer PCB.
4 Replace CPU.
Light print or no print. 1 Check that paper is properly installed (thermal side visible).
2 Check cable from printer PCB to print head.
3 Check printer-strobe-width in NVRAM (could indicate error in printer thermistor circuit). If low, check printer PCB, Main board, and CPU board.
4 Check mechanical assembly for proper force of printhead on paper.
Prints gibberish. 1 Reseat CPU board.
2 Replace CPU board.
3 Replace Printer to Main board cable.
4 Replace printer PCB.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 59
Table 3-6. Atlas trouble shooting.
Failures Possible Solutions
Safety:
Earth resistance over limit. 1 Check ground wire from motor to power supply can.
2 Tighten screws that attach ground tabs to power supply can.
3 Tighten screws holding power supply PCB to can.
4 Tighten quick connects on AC harness to power supply.
5 Replace power supply PCB.
Blood Pressure:
Leak test - Fails Leak Specification 1 Run individual test. If unit passes repeat all tests.
2 Check seals @ tubing in BP assembly.
3 Check for lifted pins on the CPU connector JP8.
4 Replace Check valve.
Leak test - ‘Can’t pump beyond xxx.xx’. 1 Verify unit can pump beyond 300 mmHg then: Retest.
2 If pump will not reach 300 mmHg, then:A. Check for correct direction on check valve.B. Check for possible leaks.C. Check for pinched tubing.D. Replace pump.
Manometer Accuracy - ‘Can’t pump beyond xxx.xx’.
1 Verify unit can pump beyond 300 mmHg then: Retest.
2 If pump will not reach 300 mmHg, then:A. Check for correct direction on check valve.B. Check for possible leaks.C. Check for pinched tubing.D. Replace pump.
3 Check for lifted pins on the CPU connector JP8.
60 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
Table 3-7. Atlas trouble shooting.
Failures Possible Solutions
Manometer Accuracy - Fails Accuracy Specification.
1 Replace Main board. Faulty transducer or amp.
Deflation Profile. 1 Replace dump valve.
2 Replace Main board. Valve drive circuitry fault.
Overpressure Limit - ‘Can’t pump beyond xxx.xx’.
1 Verify unit can pump beyond 300 mmHg then: Retest.
2 If pump will not reach 300 mmHg then:A. Check for correct direction on check valve.B. Check for possible leaks.C. Check for pinched tubing.D. Replace pump.
Overpressure Limit - Fails Accuracy Specification.
1 Replace Main board. Fault with pressure transducer, amplifier, or comparator.
2 Replace CPU board.
Dwell time. 1 Replace Main board. - Fault with 15 mmHg detect circuit.
2 Replace CPU board. - Fault with timer.
Dwell Pressure. 1 Replace Main board- If fault with 15 mmHg detect circuit.
2 Replace CPU board.
Troubleshooting Section 3
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 61
Table 3-8. Atlas failure trouble shooting.
Failures Possible Solutions
SpO2:
No Signal - SpO2 fault message on CRT. 1 Plug in finger cuff, connect to your finger & check for function. If function is normal retest. If not continue to step 2.
2 Check cables - SpO2 board to Main board, SpO2 board to Bezel.
3 Replace Main board.
4 Replace SpO2 board.
5 Replace CPU board.
SpO2 signal accuracy. 1 If Nellcor, check ribbon cable and harness. Replace as needed.
2 Replace SpO2 board.
ETCO2:
Specification limits fail - Flow rate or Percentage.
1 Perform calibration. If that does not fix then go to step 2.
2 Replace Pryon board.
ETCO2 failure. 1 Check for broken switch in trap receptacle.
2 Verify board ID in service module.
3 Perform functional test of ETCO2. Verify pump comes on when switch in water trap receptacle is activated. If switch is intermittent replace the receptacle.
4 Replace Pryon board.
5 Replace CPU board.
Temperature:
1 Check connection - main board to temperature jack.
2 Check pins in Temperature harness for correct seating.
3 Replace Main board.
62 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Section 3 Troubleshooting
Disassembly and Repair Section 4
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 63
About Section 4
This section is a guide for disassembly and reassembly of the Atlas Monitor. Always refer to current revision schematics, diagrams and final safety test procedures before attempting to service this device.
Do not attempt to service this instrument unless you have received Service Training from Welch Allyn or an authorized Training Agent, and are equipped with approved processes and test equipment. For more information about training call the Welch Allyn Customer Service phone number listed in Section 1 of this manual.
General:The outside housing is removable in order to provide full access to all internal printed cir-cuit boards and other components. Most of these are held in position with the surrounding “E-Pac” foam. E-Pac foam provides shock absorption, ventilation channels, and spaces for the components and boards. Pneumatic tubing and cables must be placed correctly in E-Pac to avoid problems with pinched tubing.
Problems During Service:A Technical Support phone number is listed in Section 1 of this manual to answer questions you may have during the servicing of the Atlas Monitor.
Printer:Print-head, printer motor, and printer roller can be replaced as necessary.
Printed Circuit Boards:There are no component level repairs for the Printed Circuit Boards(PCB). These are replaced if found to be defective. During the warranty period, boards that are found to be defective should be returned to Welch Allyn.
EXERCISE EXTREME CAUTION WHEN SERVICING THE ATLAS MONITOR! THE CRT ASSEMBLY AND CRT DEFLECTION BOARD OPERATE ON APPROXIMATELY 8,000 VOLTS.
CRT:The CRT and CRT Deflection Board are aligned at the factory and as such are replaced as a matched set if one or the other should fail in service.
Electrical Shock Hazard
CAUTION
Section 4 Disassembly and Repair
64 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
ESD: Circuit Boards are sensitive to static electric-ity. Use wrist straps, ESD mats and ESD storage bags.
1. Battery Door RemovalRemove the two screws holding the bat-tery door. Remove the battery door.
2. Battery RemovalRemove the battery connector from the main PCB. Remove battery.
Model 220 (623NP)
Disassembly and Repair Section 4
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 65
3. Rear Housing Removal3.1 Remove the four Torx head machine screws. Use a #10 Torx driver.
3.2 Pull the rear housing away from the front panel. Take special care not to dam-age any cables.
3.3 Flip the housing forward. Take special care not to damage any cables.
Section 4 Disassembly and Repair
66 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
NOTE: Observe how hose fits in E-Pac Foam. The hose fits over wiring keeping wiring secure.
4. Printer cable and Display Cable RemovalRemove both Printer and Display PCB cables from the Main PCB.
5. Power Supply Ground Wire RemovalRemove the two ground connectors from power supply chassis.
PrinterCable
DisplayPCB Cable
Disassembly and Repair Section 4
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 67
6. Tie Wrap RemovalCut the tie wrap that secures the ground wires to the E-pac foam.
7. CPU RemovalRemove the CPU from the Main PCB.
8. Main PCB RemovalUse a tool T-16654 to pry the main Board away from the Deflection Board. Pull the E-pac tab to the right as you pry. Support the Main PCB while titling it away.
Section 4 Disassembly and Repair
68 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
9. Main PCB Side Connector Removal.Remove the four connectors(power sup-ply, fan, speakers, BP pump) from the side of the main PCB.
10. Main PCB Hose and Wire Removal.Disconnect hoses and connectors. BP hose, ecg cable, temp cable (modles 622 and 623 only, SpO2 cable, CO2 cable (model 623 only)and ground wire (Nelcor SpO2 only) from main PCB.
NOTE: Notice how hoses and connectors fit on Main PCB.
11. Pump Removal.Remove the pump assembly from the E-Pac foam.
NOTE: Notice how pump fits in E-Pac Foam and how wires are routed out of pump.
Disassembly and Repair Section 4
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 69
12. CO2 Exhaust Removal.
Remove the CO2 exhaust cover and remove the CO2 connector from the E-Pac foam.
13. Pryon PCB Removal.Remove connectors from Pryon PCB. Pull Pryon PCB from E-Pac foam.
14. E-Pac Foam Removal (Top).Remove the top E-Pac foam.
Section 4 Disassembly and Repair
70 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
15. Power Supply Removal.Slide the power supply out from the E-Pac Foam.
16. Power Supply Fuse LocationNOTE: Notice power supply and power supply fuse location.
17. Fan RemovalSlide fan out from E-Pac foam.
Fuse
Disassembly and Repair Section 4
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 71
18. E-Pac Removal (Lower)Remove lower E-Pac foam from unit.
19. Deflection PCB RemovalCarefully remove the small deflection PCB from the CRT.
20. CRT RemovalRemove the two machine screws holding CRT to the front panel.
NOTE: Notice how the ground wire is attached and is located along the side of CRT.
Section 4 Disassembly and Repair
72 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
NOTE: The CRT and deflection PCB are factory tuned as a unit and are sold only together as a unit.
21. Display PCB RemovalRemove all 9 self tapping screws that hold the Display PCB to the Bezel.
NOTE: Notice the correct orientation of CRT screw and washer.
Disassembly and Repair Section 4
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 73
22. Printer Door Button RemovalUse a small screwdriver to push the door button tab up and away from the pin that locks it onto the printer frame.
NOTE: Notice how the printer button is being removed.
.
23. Printer Assembly Locking Tab Release.Pull the locking tab down and towards the front of the rear housing assembly.
Locking Tab
Section 4 Disassembly and Repair
74 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
24. Printer Positioning Slot RemovalMake sure printer door is open. Begin to pull the positioning slots towards the front of the rear housing and then out from the rear housing.
25. Printer Assembly Removal.After printer positioning slots have cleared the front rear housing, pull the printer down and out of the rear housing.
26. Printer Lip Assembly.
Observe how the printer assembly fits into the lip of the rear housing.
PositioningSlots
Disassembly and Repair Section 4
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 75
27. Printer Cable Routing.
Observe how the printer cable lies over the printer PCB.
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 77
Power Supply Circuits
Model 621Atlas Model 621 uses a 50W, medical grade, offline switcher which provides 12VDC from a universal AC input (85VAC to 264VAC – 50/60Hz). The model 621 can only be powered from external AC.
The following supplies are generated on the Atlas Main Board:+12V DC CRT, input to isolated power supply, misc. analog circuits.6V DC NIBP Pump and Valve, input to 5V and 3V regulators (5.7V nom).+5V DC Front panel LED’s, misc. logic.+3.3V DC CPU board.Vbackup: On/Off circuits.
Note: Additional electrically isolated supplies are generated for patient connected circuits.
Figure A-1. Model 621 DC/DC circuit block diagram.
On/Off Circuits – Backup Regulator and Micro-ControllerA 3.3V regulator, U304, provides power to the On/Off circuits. This voltage is diode OR’d (D304) with the lithium backup battery to provide power to the real time clock on the CPU board. The On/Off circuitry is controlled by the micro controller U305. This controller per-forms the following functions:
AC Present
AC/DCConverter
5.7V BuckConverter
BackupRegulator
+6V
+3.3V
LithiumBattery
+5VDCRegulator
+12V
On/Off
Vbackup
Model 621DC/DC CircuitsBlock Diagram
AC+12V
+5V
On/OffControlCircuits
+3.3VDCRegulator
Vb
Q301
78 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
1. Monitors the status of the front panel ON-OFF key. If the unit is off and the ON-OFF key is pressed, the controller will drive U10-6 high, which will enable power to the remainder of the instrument.
2. At power up, the micro controller will drive the beeper for about 1 second.
3. At power up, the micro controller will reset Shift Register U2. This will cause the follow-ing:
a. The front panel LED's are blanked. b. The NIBP pump drive is placed in the off state.
4. When the unit is ON the micro controller will communicate with the system CPU. When the front panel ON-OFF key is pressed, the CPU will store away current operating condi-tions, then issues a command to the micro controller to shut instrument power off. U10-6 is driven low which will remove power from the remainder of the instrument.
The instrument is powered on as follows: U305-6 is driven high, which turns transistor Q302 on (output low) Q301 (P-channel MOSFET) ON when the gate is pulled low, then +12V active. Q306 is turned off, allowing the 5.7V buck converter to power on. As 5.7V becomes active, the 5V and 3.3V supplies also become active.
Figure A-2. On/Off Control Circuits.
Buck ConverterA buck converter is used to generate 6V from the 12VDC output of the offline switcher. The UC3843A (U301), normally a current mode controller, is configured for voltage mode feed-back. The UC3843A has an under-voltage lockout for Vcc<8.5V. The controller operates such that with Vcc less than 8.5V, the reference out is 0V, and will be at 5V with Vcc>8.5V.
Vb
D
Q301
MTP23P06V
2
1
34
U305
D620361-MX10000
2
5
7
4
3
6
1 14
8
9
10
11
12
13ClkIn/Osc1/RB5
TC5/TOCK1
RC3
Vpp/MCLR/RB3
Clkout/Osc2/RB4
RC4
Vdd
Vss
RC2
RC1
RC0
RB2
RB1
RB0
+C3011000uF
R30151.1K
Q302-B
On/Off Switch
VBackup
Speaker-Audio
D
R316100
+ C304330uF
D
+C3281uF
D
Q30
1-G
filt+12V
SwitcherShutdown
+ C3234.7uF
+ C3244.7uF
Lithium
d304-1
R3201.62K
Q3062N7002
3
1
2
BackupBattery
R302100K
On/Off-Key
C303.01uF
D
R314100
U301-comp
R30310K
R31810K
C305.01uF
C325.047uF
U2-Reset
+12V
d304-2
D304MMBD354LT1
1
3
2
PIC-Clk
Q302MMBT3904L
3
1
2
AC+12V
U304
LP2951CD-3.3
873
62
15
4
VINFDBKSHTDN
TAPSENS
VOUTERR
GN
D
On-Off
C322.047uF
PIC-Data
L30147uH
PIC-audio
+ C3021uF
u304-fb
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 79
Then, the reference out (pin 14) can be used as an AC-ON detection signal. The switching transistor for the buck converter is a P-Channel MOSFET (Q305). The output drive of the controller is the wrong polarity for driving a P-Channel MOSFET in a step down mode. Therefore, transistor Q303 is added to invert the PWM out signal. Fast turn-on of Q305 is provided when Q303 is low, fast turn-off is though Q304 (configured as an emitter follower). The PWM controller includes an internal 2.5V reference. Voltage regulation is controlled with sampling resistor R304 and R305 such that Vout = 2.5V*(1+R304/R305) = 5.68V. At power down pin U301-1 (comp pin) is pulled low. This will cause U301-10 to go low, which turns Q305 off and disables power to +6V.
Figure A-3. Model 621 Buck converter.
5Vref
U301-fb
U301-5
ACON
U30
1-ou
t
Q303MMBT3904L
3
1
2C309.047uF
R3077.5K
+6V Buck(5.68V nominal)
R31110K
LC FilteredAC/DC converteroutput
Q304-e
filt+12V
U301UC3843A
3
57
14
1
10
812
911
VFB
ISENSERT/CT
VREF
COMP
OUT
PW
R-G
ND
Vcc
GN
DV
c
U301-osc
Q305MTP23P06V
2
1
34
C327.047uF
D303
MBRS340
C326.047uF
C313.047uF
Q303-c
U301-comp
C3112200pF
R304127K
C3102200pF
Q305-s
R3121.96K
R30910K
R30610K
R3101.96K
Q305-g
C311-1
Q304MMBT3904L3
1
2
L30247uH
D301BAV99L
1
3
2
+ C314330uF
R31310
R30827.4K
Q30
3-b
+6V
R305100K
80 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Linear Regulators – 5VDC and 3.3VDCThree terminal linear regulators, U302 and U303, are used to develop regulated 5V and 3V. The regulators are powered by the output of the 6V PWM converter. These regulators do not include a power down mode, but the voltage will collapse as the input voltage shuts down.
Figure A-4. Model 621 linear regulation.
Model 622 and Model 623Atlas Model 622 and 623 can be powered either from AC or battery. A 50W, medical grade, offline switcher provides 12VDC from a universal AC input (85VAC to 264VAC – 50/60Hz). The battery is a rechargeable 6-Volt, 6.5 Amp-Hour, Sealed Lead Acid Battery, and will pro-vide about 1.5 hours on a fully charged battery (Battery Life depends on usage, especially printer usage, NIBP cycles, and CO2 operation).
The unit will operate from AC when the unit is plugged in, and switches to battery opera-tion when AC is removed. The battery is automatically charged whenever AC is connected.
The following supplies are generated on the Atlas Main Board:
+12V DC CRT, CO2, input to isolated power supply, misc. analog circuits.+5V DC Front panel LED’s, misc. logic.+3.3V DC CPU board.3.3V Backup: Real time clock and On/Off circuits.Battery Charger: Charges SLA battery.
Note: Additional electrically isolated supplies are generated for patient connected circuits.
+3.3V
U302LM2940CT-5.0
1 3
2
IN OUT
GN
D
+6V
+ C31610uF
D
C320.047uF
+5V
+ C319100uF
+ C3151uF
D
DDD
D
C317.047uF
D
U303LF33CV
1 3
2
IN OUT
GN
D
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 81
Figure A-5. DC/DC circuit diagram.
On/Off Circuits
Backup Regulator and Micro-ControllerA 3.3V low current regulator, U307, provides power to the On/Off circuits and to the real time clock on the CPU board. The On/Off circuitry is controlled by the micro controller U10.
This controller performs the following functions:
1. Monitors the status of the front panel ON-OFF key. If the unit is off and the ON-OFF key is pressed, the controller will drive U10-6 high, which will enable power to the remainder of the instrument.
2. At power up, the micro controller will drive the beeper for about 1 second.
3. At power up, the micro controller will reset Shift Register U2. This will cause the follow-ing: a. The front panel LED's are blanked. b. The NIBP pump drive is placed in the off state.
4. When the unit is powered on the micro controller will communicate with the system CPU. When the front panel ON-OFF key is pressed, the CPU will store away present operat-ing conditions, then issues a command to the micro controller to shut instrument power off. U10-6 is driven low which will remove power from the remainder of the instrument.
+12V
AC Not Present
+5V
+3.3V
On/Off
AC Present
AC+12V
Battery
On/OffControlCircuits
+12VDCRegulator
BatteryCharger
+5VDCRegulator
+3.3VDCRegulator
AC/DCConverter
DC/DC CircuitsBlock Diagram
D310
Q311
Q303
BackupRegulator
82 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
18V boost converter and FET ON/OFF switchThe PWM controller, U301, is configured as an 18V boost-converter. An N-Channel MOS-FET transistor, Q303, is used to switch power to the 12V regulator. As Q303 is configured as a high side switch, it is necessary to develop a gate voltage of proper magnitude to turn Q303 on. Then, to enable power to the 12V regulator, the following takes place:
1. The micro controller drives U10-6 high, turning transistor Q302 on.
2. Transistor Q301 is switched on, supplying power to the PWM controller, U301.
3. The boost regulator develops 18VDC, which will switch transistor Q303 On.
Figure A-6. Boost converter and off/on switch.
D D
D
D
U301-comp
u307-6
Q301-b
U301-sw
Q302-c
Q302-B
U301-pwr
U301-7
U301-ct
VBackup
AC+12V
Battery
+Vfuse
V
U2-Reset
On/Off-Key
PIC-Data
On/Off
Vbackup
PIC-audio
PIC-Clk
+18V
+ C301330uF
+ C304100uF
HS301
6078
R3051
+C3021uF
Q303MTP30N06VL
2 3
1
4
D301MBR2535CTL
1
324
+ C3324.7uF
U307
LP2951CD-3.3
873
62
15
4
VINFDBKSHTDN
TAPSENS
VOUTERR
GND
Q301MPSW51A
3
2
1
C303470pf
D302BAV99L
1
3
2
R3021.96K
F303
4Amp
U301MC34063AD
53
78
1
26
4
COMPTCAP
IPKIDC
ISWC
ISWEVcc
GN
D
+ C3391uF
R30351.1K
R304100K
Q302MMBT3904L
31
2
+ C3314.7uF
R30110K
R3074.64K
L3011mH
R30661.9K
C42.047uF
U10
D620361-MX10000
2
5
7
4
3
6
1 14
8
9
10
11
12
13ClkIn/Osc1/RB5
TC5/TOCK1
RC3
Vpp/MCLR/RB3
Clkout/Osc2/RB4
RC4
Vdd
Vss
RC2
RC1
RC0
RB2
RB1
RB0
R2210K
On/Off Circuit18V Boost - Mosfet Gate Voltage
On/Off Switch
Heatsinkfor D301
(Front Panel Key)
(pg 1)
(pg 3)
(To U2)
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 83
+12V Boost Converter
The +12V boost circuit provides regulated 12VDC. The input to the 12V converter is either battery or 12V from the AC/DC converter. The circuit is configured as a boost PWM using current mode feedback. The PWM controller is a UC3843A. The controller includes an internal 2.5V, 2% reference, and an external 5V, 2% reference. Nominal output voltage for the boost converter is Vout = [2.5V*(1 + 173.8K/4.64K)] = 12.1V.
The UC3843A requires 8.5V minimum to power on. The maximum voltage allowed on the switching transistor, Q305, is 15V. To meet both these requirements, the UC3843A is pow-ered from 12.9V (+18V – 5.1V zener diode D303)
When operating from battery, the converter will run at duty cycles over 50%, which requires slope compensation for a current mode controller. Slope compensation is achieved by summing in part of the oscillator signal (pin 4) with the current sense line.
The PWM controller is current limited on a cycle to cycle basis by monitoring the voltage on the Isense line, U302-5. Current limit is activated when the voltage at the sense line reaches 1V. The nominal DC voltage at Isense is about 0.5V when operating from battery only, and 0.7V when operating from AC. Then, current limit is set to 5Amps when Atlas in operating on battery and 3Amps when operating on AC.
Figure A-7. Boost converter.
Q30
5-s
D304-C
Q30
5-gU302-comp
U302-pwr
U302-fb
U30
2-ou
t
D312-c
C305-1
Q304-e
L302
-1
U302-sense
Q305-d
U302-ct
Q303-s
AC+12V-fuse
+12V
5VRef
+18V
+V
L305Bead
C307.047uF
R315196
D304MBRS340T3
L303Bead
+ C3061uF
D3035.1V
13
U302UC3843A
3
57
14
1
10
812
911
VFB
ISENSERT/CT
VREF
COMP
OUT
PW
R-G
ND
Vcc
GN
DV
c
R3123.83K
R30817.8K
+ C3111000uF
R31110K
C3095600pF
R31410
C3082200pF
+ C3121000uF
R3177.5K
R3131.96K
R31010K
C336.047uF
D312BAV99L
1
3
2
R3160.1
+ C313330uF
+ C3101000uF
R3094.64K
C3055600pF
C335.047uF
Q304MMBT3904L
3
1
2
L30222uH
Q305
MTP30N06VL
23
1
4
+12V Boost(12.1V nominal)
84 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Battery ChargerThe battery charger is a PWM buck converter. The input to the battery charger is 12VDC from the offline switcher. The UC3843A, normally a current mode controller, is configured for voltage mode feedback. The UC3843A has an under-voltage lockout for Vcc<8.5V. The controller operates such that with Vcc less than 8.5V, the reference out is 0V, and will be at 5V with Vcc>8.5V. Then, the reference out (pin 14) can be used as an AC-ON detect signal.
The switching transistor for the buck converter is a P-Channel MOSFET (Q308). The output drive of the controller is the wrong polarity for driving a P-Channel MOSFET in a step down mode. Therefore, transistor Q306 is added to invert the PWM out signal. Fast turn-on of Q308 is provided when Q306 is low, fast turn-off is though Q307 (configured as an emitter follower).
The battery charger is a current limited - temperature compensated charger. Current limit is set to 1.5Amps. Current through the 0.1Ohm sense resistor R327 is measured with Diff-Amp U305B. When the charger current is at 1.5Amps, feedback is controlled by Op-Amp U304A. When the current drops below 1.5Amps, the output of U304A goes low, reverse biasing Diode D308, and feedback will be controlled by Op-amp U304B.
Battery charge voltage is temperature compensated using Thermistor RT301, a 10K negative temperature coefficient resistor. Voltage over temperature follows the following charge pro-file:
Table A-1. Temperature coefficient.
For optimum battery life, the float voltage (25C, full charge) should be set to 6.85V +/- 50mV (6.85V +/- 0.7%). To accomplish this tight tolerance, charge voltage at room temperature will be adjusted with potentiometer R328. Nominal charge voltage at room temperature is:Vcharge = 5V * (1 + RA/RB) where,5V is the reference in U303.RA is the series/parallel combination of R335, R336, and RT301 (nominal 3.465K @ 25C).RB is the series combination of R337and R338 (nominal 936 Ohms)
It is necessary to minimize current out of the battery when the unit is off. To reduce off cur-rent, transistor Q309 disconnects the battery from the battery sense resistors when AC in off. In addition, diode D307 is added to prevent current from flowing from the battery into the battery current sense circuit, and to the output of the AC/DC converter.
Temperature Voltage Thermistor0C 7.05V 26.9K10C 7.0V 20.7K25C 6.85V 10K40C 6.7V 5.17K50C 6.65V 3.45K
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 85
Figure A-8. Battery charging.
Linear Regulators – 5VDC and 3.3VDCA series pass 5V regulator is built using transistor Q312 and op amp U305A. A 5V reference from U302 PWM IC) is used as the control voltage for the regulator. The output of the 5V regulator is turned off when the unit is turned off. When the 18V-boost circuit is shut down, power is removed to U302, then the U302 reference is driven to 0V. Setting the reference to 0V will cause op amp U305 to turn the series pass transistor Q312 off. When operating from AC, transistor Q310 is turned on, which will turn transistor Q311 off. Power to the 5V regulator is then provided through Diode D310 from the output of the bat-tery charger circuit. Note that this voltage tap is before the current sense resistor, then load current on +5V does not affect the battery charger current limit circuit. When AC is removed, the AC-On signal goes low, and Q310 turns off. The gate of Q311 is then pulled up to 11.4V (12V – Vdiode). Transistor Q311 then turns on, and the 5V regulator is powered from the battery.
3.3VDC is derived using a three terminal regulator. The output of the 5V regulator is used to power the 3.3V regulator. The 3.3V regulator does not have an independent shutdown, but powers down as the 5V regulator shuts down.
+12V
Ref-Batcharge
ACON
ACON
Ref-Batcharge
Ref-Batcharge
AC+12V-fuse
AC+12V-fuse
U305-pwr
AC+12V
Battery
To Linear Regulators
U30
4-1
Q30
6-b
U305-6
Q307-e
Q308-d
U304-5
U304-3
Bat-Adj
U303-ct
RT
301-1
U303-5
R339-2
U304-7
Q306-c
D307-A
Bat-fuse
Q308-g
Q309-3
U304-6
C319-1
Q309-b
U305-5
U30
3-ou
t
U304-2
Batt-fb
U303-cp
Q310-b
F302-2 AC+12V-fuse
R343-1
U303-fb
+
-
U304AMC34072
3
21
84
D305BAV99L
1
3
2
R34410K
Q308MTP23P06V
2
1
34
R33319.6K
R32610
R331
33.2K
R3207.5K
+ C318330uF
Q309MMBT3906L3
12
R323 1.96K
R32410K
Q307MMBT3904L
3
1
2
C3162200pF
R3251.96K
Q310MMBT3904L
31
2
D307MBRS340T3
R34110K
C315.047uF
+
-
U304BMC34072
5
67
84
R3354.32K
R34010K
R33219.6K
Q306MMBT3904L
31
2
L30447uH
R34219.6K
C322.047uF
+
-
U305BMC34072
5
67
84
R3378.87K
R3291K
D308 BAV99L
1
3
2
C321.01uF
C314.047uF
R32210K
R33419.6K
D306MBRS340T3
R3281K
R33919.6K
R33033.2K
R34510K
t
RT30110K
R32127.4K
F3014Amp
F3024Amp
R3270.1
U303UC3843A
3
57
14
1
10
812
911
VFB
ISENSERT/CT
VREF
COMP
OUT
PW
R-G
ND
Vcc
GN
DV
c
R338
1K
13
2
R3367.5K
+C3191000uF
R34310K
R31810K
R31919.6K
C320.01uF
C337.047uF C338
.047uF
D309BAV70L
1
3
2
L306BeadC340
.047uF
Float Voltage
Current Limit(1.5 Amp)
BatteryCharger Input to 5V and
3.3V linearregulators.
86 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Figure A-9. Linear regulator.
A/D – grounded circuits
The A/D converter is designed by building a pulse width modulator (PWM) and a timer cir-cuit. The PWM runs at a 1.2KHz rate, synchronized by the A/D sync signal (NIBP-ADC-Clock). A/D sync is low for 52.1uSec, high for 781.25uSec. Component values are selected such that the integrator will ramp down 4.7V, and ramp up 7.83V. The voltage at the integra-tor output (U601-1) is limited to about 5V [5V*(73.2/83.2) + Vdiode)]. Then, the integrator starts at 5V and ramps linearly down to 0.3V.
The analog input voltage to be digitized and the integrator output are the inputs to compar-ator U210. The output of the comparator is low at the start of an A/D cycle, and switches high as the integrator ramp drops below the input voltage being digitized (see the timing diagram below). A/D conversion is accomplished by measuring the width of the PWM out-put signal. The A/D timer runs at 25.175MHz, then the A/D resolution is about 21000 counts (over 14 bits). Note that since the output of the comparator is low at the start of the A/D cycle, a resistor divider is formed at the comparator input. This divider reduces the Analog-In signal by 0.75% [464K/(464K+3.48K)].
Figure A-10. NIBP PWM A/D converter.
DDD
+12V
D
+12V
+Vpump
+3.3V
5VRef
AC+12V-fuse
+5V
ACON
Battery
Batt Charger input
To Q309
U305-3
C324-2
U30
5-1
U30
5-2
Q312-g
Q310-b
R343-1
U306LF33CV
1 3
2
IN OUT
GN
D
C326.01uF
D310MBRS340T3
C3241000pF
R34710K
R346100
+ C323100uF
HS302
6078
Q311MTP30N06VL
23
1
4
R350
10K
D311BAV70L
1
3
2
+ C329100uF
C327.047uF
C330.047uF
+ C325100uF
R34910K
Q312
MTP30N06VL
2 3
1
4
C328.047uF
R34810K
+
-
U305AMC34072
3
21
84
R34310K
R34510K
Q310MMBT3904L
31
2
R34219.6K
D309BAV70L
1
3
2
R34410K
R34110K
+5V LinearLowDropout
HeatsinkforQ312
From BateryCharger Circuit.
NIBP-PWM-ADC
P+5V
P+5V
NIBP-ADC-Clock
P+5V
Analog-Input
U207-3
U210-3
U210-7
U208-3
U208-2
U208-1
D201-C
U209-Out U210-2
A
AA
A
P+12V
A
A
A
A
A
R237464K
C221.047uF
C220
.01uF
+C2184.7uF
C2241000pF
R23173.2K
R23210K
R2353.48K
C225.047uF
U207B74HCT00
4
56
14
7
R2333.48K
+
-U210MAX941
2
36
1 4
7
5
R2343.48K
C219.047uF
+
-
U208AMC34072
3
21
84
R23010K
U207A74HCT00
1
23
14
7
D201MMBD1503A
1
3
2
NIBPPWM A/DConverter
PWM A/DConverter
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 87
Figure A-11. PWM timing.
A/D Mux – grounded circuitsAnalog signals are switched to the A/D converter through MUX U209. Control of the multi-plexer is through a serial communication channel from the main CPU. The following signals are digitized:
+5V/2 Sampled version of the 5V supply. Used to verify A/D operation.SafetyPres Safety Pressure TransducerPrimaryPres Primary Pressure TransducerP.75V Reference voltage for A/D calibration. 0mmHg pressure for Primary Transducer.P4.25V Reference voltage for A/D calibration. 300mmHg pressure for Primary Transducer.Print-Temp Printhead Temperature, used to compensate printer strobe width.Model 622/623: Vbatt Battery Voltage, used to warn of low battery condition Model 621: Not Used.Model 622/623 BattCurrent: Battery charger current, used in service mode verification. Model 621 LithMeas Backup Battery voltage (Lithium Battery) Used to warn user of low backup battery condition.
NIBP Circuits
Overview - Safety:Two pressure transducers are used, a primary and safety transducer. The primary is used to make all BP measurements. Hardware circuits monitor the output of the primary transducer, looking for overpressure faults. In addition, Software monitors the digitized outputs of the primary transducer, and detects overpressure faults. The following overpressure faults are detected in software (monitored once per second):
>=10mmHg pressure for 295 seconds>=15mmHg pressure for 175 seconds>295mmHg pressure for 0.5 seconds.
Analog In
(U207-3) 781uSec
52uSec
0.31V
PWM-timer
ComparatorInputs
PWM-Out(U207-6)
+5V
IntegratorInput -f=1.2KHz
88 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Software detected overpressure faults are considered application faults. The user is warned of a fault with an audible alarm and a ‘Check blood pressure cuff’ message on the CRT dis-play. NIBP is not disabled for this type of fault. In the event of a fault, the drive signals to the NIBP pump and valve are opened.
Two hardware faults are detected, pressure over 330mmHg (nominal trip point 314mmHg, and pressure over 15mmHg for three minutes (13.3mmHg nominal trip point). These faults are considered more serious (since software should have detected and corrected this condi-tion). The user is notified with a ‘BP SYSTEM FAULT’ message, and NIBP is disabled. A redundant safety transistor is opened to ensure the NIBP pump is off and the valve is open.
The primary and safety transducer outputs are continuously digitized. The outputs of the transducers are checked vs. each other, and if they disagree, an ‘NIBP Fault Message’ is declared and the NIBP system is disabled. The outputs of the transducers are linearly pro-portional to the supply voltage (supply current for the safety transducer). The transducers use unique reference voltages to ensure that a fault in one reference will not cause an equiv-alent gain error in both transducers.
The A/D also has redundant checks. Two reference voltages (derived from the primary transducer reference supply) are measured, and the A/D gain and zero is checked. In addi-tion, a unique reference is digitized, and compared vs. expected results. An error in any of these A/D measurements will again cause an ‘NIBP Fault Message’, and the NIBP system will be disabled.
Primary Transducer - Amplifier:The primary pressure transducer is a fully calibrated and compensated transducer with built in voltage amplification. The output of the transducer is proportional to the supply voltage. With a 5V supply, the output of the transducer is:0mmHg = 0.5V.300mmHg = 4V.Op amp U204A is used to level shift the output of the transducer such that the nominal volt-age for 0mmHg is set to 0.75V. The CPU monitors the digitized zero pressure voltage, and any offset is corrected. This correction comes from the summation of an error correction sig-nal through op amp U204B. The CPU will output a pulse width modulated signal at 76.8KHz. This signal is RC filtered to provide ad DC voltage at U204-5. This signal can adjust the offset seen at the A/D converter by +/-20mmHg.
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 89
Figure A-12. Primary transducer amplifier.
Safety Transducer - AmplifierThe safety transducer is compensated for temperature drift, but gain and zero are not cali-brated. The safety transducer does not include built in voltage amplification. The safety transducer output is a differential voltage, proportional to the supply current through the device.
The initial accuracy of the safety transducer is very loose, in the order of +/-50%. However, the drift over time and temperature is very good. Then, it is necessary to calibrate the output of the safety transducer. This is done my measuring a know pressure, measuring the output of the safety transducer, and storing calibration constants in NVRAM. A two-point calibra-tion procedure is used. Calibration is done at the factory, and can be recalibrated in the field if necessary.
Current Source:Op amp U205A is configured as a current source for the Pressure Transducer, with the cur-rent through the transducer set to 1.5mA. Nominal gain for the transducer is 300mmHg = 75mV.
Differential Amplifier and Offset Centering:The output of the safety transducer is a differential voltage, with a nominal gain of 0.25mV/mmHg, and a zero pressure offset voltage of +/-25mV. The A/D converter has an input volt-age range of 0.5V to 5V. It is necessary to both add both signal gain and offset centering to the transducer output before digitalization.
Op amp U206A/B is configured as a differential amplifier, with a voltage gain of 22.5. The output of the differential amplifier is offset by 1.2V (U205B).
P+5V
P+.75V
+3.3V
NIBP-Offset-DAC
PrimaryPres
P201-Out
U204-5
U204-2
U204-7
U204-3
P201-pwr
P201-6
U204-1
C207-1
A
P+12V
A
A
A
A
A
A
A A
A
P+12V
A
A
C232.047uF
C227680pF
C209.047uF
C228.047uF
R2175.62K
R213237K
L202
Bead
C226.047uF
R2363.83K
R21823.7K
+
-
U204BMC34072
5
67
84
C231.01uF
R24421.5K
C206.047uF
R215100K
R21256.2K
+
-
U204AMC34072
3
21
84
+C2081uF
R2191.96K
GainandComp
XFPM-050KPGR-P1P201
1
2
3
6
R21619.6K
R21410K
+ C2071uF
PWM D/A76.8KHz
0mmHG = 0.5V 300mmHG = 4.0V
PrimaryTransducer
Zero Adjust+/-20mmHg range
90 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Figure A-13. Safety transducer amplifier.
Hardware Overpressure:The output of the primary transducer is monitored for two overpressure conditions; pres-sures in excess of 13.3mmHg (nominal) and 314mmHg (nominal) are detected. These error conditions are transmitted to the gate array on the CPU board, and if the error conditions are present for a long enough time period, a fault message is displayed, and NIBP is disabled (see above for safety performance operation).
The output of the Primary Transducer drives the two comparators U203A/B. The compari-son voltage is derived through a resistor divider chain from a 5V regulator (U201). This reg-ulator is the supply voltage for the primary transducer, and sense the primary output is proportional to the supply voltage, tolerance errors in the regulator are not critical.
5VRef
SafetyPres
P202-5
P202-Out+U206-1
U206-2
U206-7
U205-7
P202-Out-
P202-2U205-3
A
A
P+12V
P+12V
P+12V
A
A
A
A
A
A
A
P+12V
A
C212680pF
+
-
U205AMC34072
3
21
84
R22621.5K
R2251K
-+
FPNS-07PGRP2022
13
5
6
C216.047uF
+
-
U206BMC34072
5
67
84
+
-
U206AMC34072
3
21
84
+
-
U205BMC34072
5
67
84
C215.047uF
R2213.16K
R2221K
C211
.047uF
C213.01uF
TP226
R22321.5K
C214.047uF
R220806
C217
.047uF
R2275.11K
R2241K
ZeroOffset
SafetyTransducer
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 91
Figure A-14. Over pressure fault circuit.
Pump and Relay Drive:Two independent dual transistor switches, Q202 and Q203 control the pump and valve. Q202 is controlled by logic circuits on the CPU board, and is normally in the on state. Q202 is only opened in a fault condition (over pressure, A/D calibration error, or transducer mis-match). Once a fault is detected, Q202 will remain open until power is cycled. Under nor-mal operation, dual transistor Q203 is used to switch the pump on and close the valve. The pump-on and valve-close commands are controlled by software. Note that the valve is nor-mally open. Then, in the case of no power, the valve will be in the open state.
Figure A-15. Pump relay circuit.
Note: Model 621 uses a single Mosfet for transistor Q202, with the drain connected to +6V, and the source connected to nets ‘Pump+’ and ‘Valve+’ through a series diode.
P+12V+12V P+5V
P+.75V
NIBP-Overpressure
NIBP-15mmHg
P+4.25V
PrimaryPres
U203-5
U202-3
U202-5
U203-6
U203-3
U203-2
A
A
P+12V
A
A
+3.3V
A
A
A
P+12V
A
A
P+12V
A
AA
A
+3.3V
A
P+12V
+
- U203BLM393
5
67
84
R2111.96K
C203
.047uF
L201220uH
+C22910uF
R2081.96K
R207464K
R202174
+
-
U202AMC34072
3
21
84
C223.01uF
R2061K
+ C2024.7uF
C205
.047uF
+
-
U202BMC34072
5
67
84
C222.01uF
U20178L05
8 1
2 3 6 7
IN OUT
GN
D
GN
D
GN
D
GN
D
C201.047uF
R204150
C204.047uF
R201576
R2091K
+
- U203ALM393
3
21
84
R210464K
R205750
R2033.32K
Over PressureFault Circuit
NIBP-Pump-OnNIBP-Valve-Close
NIBP-Safety
+5V +Vpump
Pump-
Valve-
Pump+
Valve+
Q201-B
Q202-G
D20
1-A
+12V
Q203MMDF2N02E
81
2
5 67
3
4
R246
31.6
Q201MMBT3904L
31
2R243100K
R24110K
R24210K
D202BAV99L
1
3
2
R2481K
J201
CON5
12345
R2471K
R24010K
Q202MMDF2N02E
81
2
5 67
3
4
92 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
CRT Deflection Board
Overview:
Atlas uses a 5-inch monochrome CRT display. This CRT will display Waveform Data (ECG and Respiration or SpO2 or ETCO2), plus Text Data (Heart Rate, Alarm Values, Trend Data, setup, and service menus). The CRT Deflection board performs the following functions:1. Vertical Deflection.2. Horizontal Deflection.3. CRT Grid Voltages.4. Video Amplifier.CRT Deflection is magnetic, vertical and horizontal deflection is controlled by regulating current through the vertical and horizontal coils of the CRT Yoke. The Deflection board is designed to the following specifications:
Resolution: VGA (640X480) Dot Clock: 39.7nSec (1/25.175Mhz) Display Size: 100mm (Horizontal) X 68mm (Vertical)
Vertical: Scan Rate: 60Hz Reset Time: 750uSec Blanking Time:1.2mSec
Horizontal: Scan Rate: 31.5Khz Reset Time: 5uSec Blanking Time: 5.7uSec
Vertical Amplifier:
Ramp Generator:
Figure A-16. Ramp generator circuit.
A ramp generator is built from the integrator (U1A, C1, and R3). The slope of the integrator
+12V+5V
VsyncRampU4.2
U1.2
d6.c
U1.3
C3.047uF
U4A
74HCT04
1 2
R43
5.11K
R521.96K
R27.50K
R11K
R323.7K
C1.1uF
D11N4148
12
D61N4148
12
+
- U1ATLC272
3
21
84
Ramp Generator
750uSec
16.7mSec
Vertical Sync
VerticalSync
16.7mSec
750uSec
3.95Vpp
5.0V
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 93
is: V = (I*T)/C. The integrator is designed so that it ramps up 6.97V in 750uS and ramps down 3.95V in 15.9mS. Diode D1 clips the output voltage at about 5.0V (U1-pin3 + Vdiode). Then the ramp resets at 5.0V each cycle, and integrates down 3.95V.
Figure A-17. Vertical amplifier circuit
Vertical Amplifier:
The Vertical amplifier will generate a linear current ramp of +/-200mA. The vertical ampli-fier is an H-Bridge type driver. Positive current flow (deflecting the beam above the center-line) is defined as current from +12V to Q1 to Rsense through the coil to Q4 to Ground. The negative current path is from +12V to Q3 through the Coil to Rsense to Q2 to Ground.
The input to the vertical amplifier is the ramp voltage generated above. The objective of the vertical amp is to match the current through the vertical coil with the input ramp control voltage. Current through the vertical coil is monitored through the sense resistor, formed from R15, R16, and R17. Voltage across the sense resistor is measured with the differential amplifier U1B. This voltage is then used as the feedback voltage to the control opamp, U2A.
Zero Adjust:The output voltage from the ramp generator is a ramp from 5.0V to 1.05V (nominal). The center of this ramp is 3.0V. Then, the output of the current sense diff amp must be offset by 3.0V. This is accomplished with the Zero Adjust Network, Resistors R9, R10, and R11. Verti-cal centering is then accomplished by writing a pattern to the CRT, and adjusting R10 to center the display.
+5V
+5V
Ramp
q4.b
q3.b
u2.6
u1.5
u2.7
q1.b
vadj
q1.e
u1.6
u1.7
vcadj
vcadj-vcadj+
q2.b
u2.2
+12V+12V
+12V
+12V
Q1MPSW01A
32
1
R17 10
R15 38.3R20169+
-U2A
MC34072
3
21
8
4
R641.2K
R9
1.47K
+ C522uF
R410K
+
-U2BMC34072
5
67
8
4
Q4MPSW51A
32
1
R11
1.96K
C4.047uF R19
562
R18562
R741.2K
R2310K
R13169
+
-
U1BTLC272
5
67
8
4
R841.2K
C2100pf
R2210K
R10 1K
R542.2K
R21562
Q2MPSW51A
32
1
R16 10
Q3MPSW01A
32
1
R12562
R14562
L
Vertical Yoke
Vertical Amplifier
Size Adjust
Zero Adjust
94 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Size Adjust:
Adjusting the current through the Vertical Coil changes vertical deflection. The voltage across the sense resistor is:Vsense = (Vramp-Voffset) / 1.02 (1.02 is the gain of the current sense diff amp) Current through the coil is equal to current through the sense resistor network.coil = Isense = Vsense / RsenseThen, adjusting the value of the sense resistor will change the current through the vertical coil. Vertical gain is then accomplished by writing a pattern to the CRT, and adjusting R16 to set vertical deflection.
Horizontal Amplifier:
Current through the transformer increases linearly as Transistor Q6 is On (I = VdT/L). When the transistor opens, the drain voltage kicks up, and the current through the Transformer coil flows through C9, L2, L3, and the Horizontal Coil to Ground The transformer quickly loses flux (reset time < 5uSec). Current continues to flow in load inductance, from Ground through Q6-diode, C9, L2, L3, and the Horizontal Coil to Ground. This current flow charges capacitor C9. The current decreases linearly to 0, then changes directions. This is due to the AC coupling capacitor C9 being charged to a negative voltage. Current flow is then from Ground through the Horizontal Coil, L2, L3, C9, and Q6 to Ground. The drive to MOSFET Q6 is AC coupled. This will prevent Q6 to be driven high in the event of a faulty driver on the CPU board.
In order to get adequate deflection current (about +/-2.3Amps), 18.5V across the transformer coil is necessary. A “boost” winding is added to the transformer, then when the voltage on the transistor drain flys up, current flows into capacitor C11. C11 charges to a voltage deter-mined by the turns ratio in the transformer.
Horizontal Gain:Horizontal deflection is adjusted by changing the current through the Horizontal coil. Changing the series inductance in the Horizontal Deflection Path modifies the current. Increasing Horizontal gain is then accomplished by writing a pattern to the CRT, and adjust-ing the “width coil”, L3.
Horizontal Centering: Horizontal centering is accomplished by rotating magnets mounted on the CRT Yoke assembly.
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 95
Grid Voltages:
The following voltages are developed to bias the grids on the CRT:Grid 1: 10V to -50V DC (Brightness Adjust)Grid 2: 350VDCGrid 4: 0V to 350VDC (Focus Adjust)Anode: 7.5KV
These voltages are derived from additional windings on the FBT. In addition, the supply voltage for the video amplifier (+36VDC) is generated from a tap on the FBT.
Figure A-18. Horizontal amplifier grid voltage circuit.
Video Amplifier:
The CRT tube turns a dot on when video out is low (near 0V), and off when video out is high (+Vvid = 28V). The input to the video amplifier is a digital signal (3.3V logic level) from the uProcessor. An input of 0V turns the dot off, an input of 3.3V turns the dot on. Transistor Q7 amplifies and inverts this signal. Video out is driven low through D7, and driven high through emitter follower Q8. .
+12V
+12V
+12V
+Vvid
Grid 2
Intensity
Hsync
Focus
+B
hwide
Vg2
d5.c
q5.c
C22-2
Vd
q6.d
Vg1
+12filt
Hor
Grid1
hlin
q5.b
d4.a
Boost
Q6IRF640
2
1
34
C15.01uF
R2710
L215uH
LHorizontal Yoke
D51N4937
1 2
U4B
74HCT04
3 4
C22.022uF
D31N4935
1 2
+ C1222uF
L1
47uH
Q52N3904
32
1
R2410K
C8.022uF
D2
MUR120
1 2
R30100K
C14.01uF
+C101000uF
C16.01uF
R29 100K
R25215
+ C13
22uF
To CRTAnodeT1
CRT-FBT
10
9
7
1
3
5
2
8
R261K
+C111000uF
R2819.6K
R501.96K
R322.5Meg
C96.8uF
D41N4935
12
C17.01uF
L315- 35uH
31.7uSec
Horizontal AmplifierGrid Voltages
5.5uSec
FocusAdjust
Horizontal Sync
BrightnessAdjust
96 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Figure A-19. Video amplifier circuit.
Recorder Electronics
Overview:Atlas includes a thermal strip chart printer (optional on Model 200 and 210, standard on model 220). The user can print either annotated waveform data or Patient trend informa-tion.
The printer specifications are: Paper Size: 56 or 58mm (2 1/4 inches) Printhead Width: 54mm (2 1/8 inches) Resolution: Vertical: 8 dots/mm, (200 dots/inch) Horizontal: 12 dots/mm (300 dots/inch) Chart Speed: 25mm/sec (1 inch/second)
The main CPU controls the printer. Data timing, clock signals, and strobe widths are all gen-erated by the FPGA on the CPU board. These signals are buffered on the recorder board (inverter U5), before transmission to the printhead.
Power Supply – 24 SwitcherIt is necessary to generate 24VDC for the print head and motor. The input to the 24V switcher is either 12V from the AC/DC converter, or Battery voltage on the model 210/220 when AC is not present. The circuit is configured as a boost PWM using current mode feedback. The PWM controller is a UC3843A. The controller includes an internal 2.5V, 1% reference, and an external 5V, 1% reference. Nominal output voltage for the boost converter is Vout = [2.5V*(1 + 84.5K/10K)] = 23.6V.
The converter will run at duty cycles over 50%, which requires slope compensation for a current mode controller. Slope compensation is added by summing in part of the oscillator signal with the current sense line.
+Vvid
+5V
VideoIn
VideoOut
q8-b
q7-g
q8-e
u4-6
C19.01uFR37
1.96K
Q82N3904
32
1
R361.96K
R5119.6K
U4E
74HCT04
11 10
R48100
D71N4148
12
Q7BS170
1
2
3
R41681
Video Amplifier
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 97
The PWM current limits on a cycle to cycle basis. The supply will be in current limit when the Isense line reaches 1V. Current limit is set to about 3.5 Amps from 12VDC or 5Amps from battery.
Two control signals exist for the 24V switcher, n24Von and Rec-Supply-On. The 24V switcher is disabled when n24Von is high. This signal is controlled by the on board PIC pro-cessor. The switcher is held off at power up, and allowed to start after 50mSec. This is done to reduce inrush current at power up. The signal Rec-Supply-On enables power to the print head, and is controlled by the main CPU. Power is only applied to the print head when the recorder is running.
Figure A-20. Recorder power supply circuit.
Motor Driver:Atlas uses a stepper motor to drive the paper. The microcontroller (U3) is programmed to apply the appropriate phased signal to the motor. A quad darlington switch (U6) amplifies the signal from the controller to signal levels needed to drive the motor. Motor speed timing is derived from the main CPU, and transmitted to U3 on signal line U3-clk (U2-pin2).
Figure A-21. Printer motor drive circuit.
RecVdc
RecVdc
+24V
n24VOn
+24V-switch
U2-
Isen
se
U2-Ref
U2-RT
Q6-e
U2-
out
Q4-
GU2-comp
Rec-Supply-On Q2-b
Q4-D
U2-fb
Q4-s
A+5V
A
A
A
A
A
A
A
A
A
+12V
A
A
A A
R193.16K
+ C41000uF
TP8
C11.047uF
TP14
L122uH
TP17
R1619.6K
C7.01uF
R224.22K
R1310
C135600pF
Q4MTP30N06VL
23
1
4R1410K
R170.1
R610K
TP10
Q32N7002
3
1
2
R1210K
TP19
+ C61uF
TP21
C142200pF
R115.11K
R18no-load
Q6MMBT3904L
3
1
2
R15147
TP23
Q2MMBT3904L
31
2
R910K
R1010K
TP9
D2MBRS340T3
U2UC3843A
3
57
14
1
10
812
911
VFB
ISENSERT/CT
VREF
COMP
OUT
PW
R-G
ND
Vcc
GN
DV
cR7
84.5K
+ C81800uF
Q1MTP30P06V
2
1
34
R310K
PrintheadPowerSwitch
SwitcherDisable
ToPrinthead
ToMotorRecorder
PowerSupply
U3-clk J3-1
u6-11
u6-clmp
J3-3
d6-c
U3-8
U3-10
n24Von u6-14 J3-4
J3-6
U3-9u6-3u6-6
U3-7
A
A
+24V+24V
+5V
DA
D627V
13
R331.47K
U6ULN2065
36
1114
27916
18
1B2B3B4B
1C2C3C4C
CLMP1CLMP2
C19.047uF
TP26
R351.47K
TP29
C18.047uF
TP1
J3
CON6
123456
R361.47K
TP67
+C2047uF
R341.47K
D127V
13
TP28
TP27
U3
PIC16C505
2
5
7
4
3
6
1 14
8
9
10
11
12
13ClkIn/Osc1/RB5
RC5/TOCK1
RC3
Vpp/MCLR/RB3
Clkout/Osc2/RB4
RC4
Vdd
Vss
RC2
RC1
RC0
RB2
RB1
RB0
+
4
Connector Pin #
+
43
+
1
+1phase +23
+
6
++
98 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Temperature Amplifier:The printer will print darker as temperature is increased. Print darkness can adjusted by controlling the time a dot is turned on. A thermistor is included on the printhead. This ther-mistor is nominally 30K, and decreases as temperature increases. The output of the temper-ature amplifier is a function of the thermistor voltage, Temp = .755*(1+R8/Rtherm). This voltage is digitized (on the main board), and the CPU can compensate dot width in order to maintain consistent printing over temperature.
Figure A-22. Print head temperature circuit.
Patient Isolated Circuits
Isolated PowerIsolated power is provided to the ECG, SpO2, Temperature, and Impedance Respiration cir-cuits using an Isolation Transformer T401 (temperature and respiration on models 622 and 623 only). The power supply is a PWM controlled flyback converter. The PWM controller is an LM3524. Output voltage f+V is sampled and compared with a 5V reference voltage. An error voltage is generated, and this voltage returned via opto U410. Voltage f+V is regulated to 7.4V. A second tap on transformer T401 provides f-V (-7.4V). The switcher operates at 76.8KHz, controlled by a sync signal from the CPU board. The power supply is synchro-nized with the A/D converter used to digitize ECG, Temperature and Respiration signals.
Thermistor1
Thermistor2
Temp
U1-1
U1-2
U1-3
A A
+5V
+5V
+5V
A
A
A
R151.1K
TP6
D3
BAV99L
1
3
2
C1.047uF
R21K
TP3
C5 .01uF
TP54
C3.01uF
R8 23.7K
R49.09K
C2.01uF
R51K
+
- U1AMC34072
3
21
84
ThermistorInput
PrintheadTemperatureAmplifier
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 99
Figure A-23. Patient isolation circuit.
Linear Regulators and Filtering – Model 621From the raw f+V and f-V voltages (labeled fVcc and fVee on model 621), the following sup-plies are generated for the various patient isolated circuits:iso+5dig: Regulated 5V supply. This voltage is used to power the opto-isolators and digital control logic. This is also the reference voltage used in the regulation of f+V.f+5V: Regulated +5V supply: Filtered and buffered from iso+5dig, this voltage is used for the A/D reference.fVcc: This voltage is used to power the Op-Amps used in the ECG and A/D circuits. This voltage also powers the Nonin SpO2 electronics.fVee: This voltage is used to power the Op-Amps used in the ECG and A/D circuits.
Figure A-24. Model 621 line regulation and filtering.
S
S
S
S
S
SS
ED SE
S
FE-Pwr-Sync
+5V
+12V
+12V
f+V
s+5V
f-V
f+V
U402-1
C409-1
T401-4
Q40
1-g
U402-sen
opto-fb
iso401-a
Q40
2-e
Q401-s
U401-1
C408-2
U401-2iso401-b
U402-e
U402-ref
U402-rt
U401-3
f+V T401-1
T401-8
R419-2
U402-ct
R405215
C409470pf
R4031K
+C405100uF
+C407100uF
R40710
D405BAV99L
1
3
2
R4095.11K
R408100
C410.01uF
R4060.2 R410
7.5K
Q402MMBT3906L 3
12
C414.047uF
R4115.11K
U402
LM3524DM
12
16
15
945
10
67
12111314
3
8
V-V+
VREF
VIN
COMP+SENSE-SENSE
SHTDWN
RTCT
CAEACBEB
OSCOUT
GN
D
+ C41210uF
U4104N25
1 6
2
5
4
C408.01uf
R40210K
R404196K
C402.047uF
C404.047uF
C420.047uF
C4112200pF
R42210K
+
- U401ALM358
3
21
84
D403
MBRS130T3
D401MBRS130T3
R4235.11K
R40110K
C433470pf
R419215
Q401MTD3055V
23
1
4
R41710K
TP459
TP462
TP464TP463
TP450
TP449
TP453
TP454
TP456
TP458
TP451
TP455
TP457
TP466
T401
IsoXfmr
5
8
1
2
3
4
IsolationBarrier
PatientIsolatedCircuits
GroundedCircuits
R41610K
SS
C417680pf
C401.047uF
fVcc
U403LP2951C
873
62
15
4
VINFDBKSHTDN
TAPSENS
VOUTERR
GN
D
S
iso+5Vdig
U401-7
S
+
-
U401BMC34072
5
67
84
R415100
C416.047uF
+C406100uF
+C4184.7uF
S
fVcc
U403-7
S
S
+C4151uF
S
C403.047uF
U401-5
f+5V
100 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Linear Regulators and Filtering – Model 622 and 623From the raw f+V and f-V voltages, the following supplies are generated for the various patient isolated circuits:iso+5dig: Regulated 5V supply. This voltage is used to power the opto-isolators, digital con-trol logic, and 5V digital supply for the Nellcor SpO2 board.s+5V: Regulated +5V supply: Analog 5V supply for the Nellcor SpO2 board. This is also the reference voltage used in the regulation of f+V.f+5V: Regulated +5V supply: Filtered and buffered from s+5V, this voltage is used for the A/D reference.s-5V: Regulated –5V supply: Analog –5V supply used for the Nellcor SpO2 board.fVcc: LC Filtered voltage, derived from f+V. This voltage is used to power the Op-Amps used in the ECG, Respiration, Temperature, and A/D circuits.fVee: LC Filtered voltage, derived from f-V. This voltage is used to power the Op-Amps used in the ECG, Respiration, Temperature, and A/D circuits.
Figure A-25. Model 622/623 line regulation and filtering.
S
S
S
S
S
S
S
S
S
S
S
S
SS
S
S SS
fVcc
iso+5Vdig
s+5V
fVee
s-5V
f+V
f-V
f+5V
f+V
U40
3-fb
U401-7U401-5
+
C421
1uF
C401.047uF
TP468
L401 220uH
U40479L05
2 1367
5
IN OUTINININ G
ND
+ C43110uF
TP452
+ C4151uF
+ C43210uF
+ C406100uF
C403.047uF
C430.047uF
U40778L05
8 1
2 3 6 7
IN OUT
GN
D
GN
D
GN
D
GN
D
+ C43410uF
C424.047uF
+ C43510uF
U403LP2951C
873
62
15
4
VINFDBKSHTDN
TAPSENS
VOUTERR
GND
L402 220uH
+C4184.7uF
C417680pF
TP461TP460
+
-
U401BLM358
5
67
84
R41610K
TP465
R415100
C416.047uF
Isolated Supply VoltagesRegulation and Filtering
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 101
A/D Circuits
M A/D
A pulse width modulator is used as an A/D converter. The PWM runs at a 1.2KHz rate, syn-chronized by the A/D sync signal. A/D sync is low for 52.1uSec, high for 781.25uSec. Using the values shown, the integrator will ramp down 10.01V, and ramp up 25V. The voltage at the integrator output (U601-1) is limited to about 5V [5V*(73.2/83.2) + Vdiode)]. Then, the integrator starts at 5V and ramps linearly down to –5V.
The analog input voltage to be digitized and the integrator output are the inputs to a com-parator. The output of the comparator is low at the start of an A/D cycle, and switches high as the integrator ramp drops below the input voltage being digitized (see the timing diagram below). A/D conversion is accomplished by measuring the width of the PWM output signal. The A/D timer runs at 25.175MHz, then the A/D resolution is about 21000 counts (over 14 bits). Hysteresis is added to the comparator to avoid oscillations during switching. Note that since the output of the comparator is low at the start of the A/D cycle, a resistor divider is formed at the comparator input. This divider reduces the Analog-In signal by 0.75% [464K/(464K+3.48K)].
Figure A-26. A/D converter circuit.
EfVee
fVcc
E
f+5V
fVee
fVcc
E
iso+5Vdig
f+5V
Analog In
PWM-Out
U60
2-7
U601-2
U604-10
D601-2
U60
2-5
U60
2-2
U601-3
U601-1 U602-3
R607464K
R6081K
R60110K
R60346.4K
R6063.48K
C601
1000pF
C603680pF
D601MMBD1503A
1
3
2
R60410K
+
-
U601AMC34072
3
21
84
R60273.2K
+
- U602LM311
2
37
5 64 1
8
R6053.48K
U604D74HCT04
9 8
14
7
PWM-Out
IntegratorInput
+5V
-5V
(U604-10)
PWM A/DConverter
833uSec
52uSec
Analog In
ComparatorInputs
(U604-8)
f+5V
E
A/D-sync
U604E74HCT04
11 10
14
7
PWM-timer
102 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
A/D MultiplexerThe model 621 uses an 8-channel multiplexer, the model 622/623 uses a 16-channel multi-plexer, to select the analog signal to be digitized. Control of the multiplexer is through a serial communication channel from the main CPU. The following signals are digitized:
Ground Ground Reference for digitized signals, used in calibrating the A/D converterECG Amplified ECG signalV Buffer Output of the V-lead buffer, used to determine leads offLL Buffer Output of the LL-lead buffer, used to determine leads offLA Buffer Output of the LA-lead buffer, used to determine leads offRA Buffer Output of the RA-lead buffer, used to determine leads offf1.24V Reference Voltage, used in calibrating the A/D converterRL Output Output of the RL amplifierPatient Temp Analog voltage representing patient Temperature (model 622/623 only)Respiration Amplified Respiration signal (model 622/623 only)Resp Leads Off DC impedance for respiration, used to determine respiration Leads off (model 622/623 only).
Figure A-27. A/D multiplexer circuit. Note: U609 not used in model 621.
fVcc
fVee
fVeefVcc
E
E
E
E
LA
vRL
V+
RA
LL
Analog ECG
f+1.24V
Resp-LdsOffAn-Resp
Patient-Temp
Mux B
Mux A
Analog In
Mux-A/D-AMux-A/D-BMux-A/D-C
U6034051
131415121524
611109
3
168 7
X0X1X2X3X4X5X6X7
INHABC
XVD
DV
SS
VEE
U6094051
131415121524
611109
3
168 7
X0X1X2X3X4X5X6X7
INHABC
XVD
DV
SS
VEE
MuxA
MuxB
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 103
Serial CommunicationSerial data is transmitted to the isolated circuits through Optical Isolators. The following signals are transmitted from the CPU board to the isolated circuits:
1. FE-Serial-Data: Serial Data transmitted from the CPU board to the Isolated circuits.2. FE-Data-Clk: Serial Data Clock.3. A/D Clk: Serial Data latch. Also used as clock for PMW A/D converter.
Serial Data is converted to a parallel format using Shift Register U605 and U606. The follow-ing Data is transmitted from the CPU board to the isolated circuits: 1. Mux-A/D-A Control bit A for A/D Mux2. Mux-A/D-B Control bit B for A/D Mux3. Mux-A/D-C Control bit C for A/D Mux4. Mux-Lds-A Control bit A for ECG Lead Select Mux5. Mux-Lds-B Control bit B for ECG Lead Select Mux6. Mux-Lds-C Control bit C for ECG Lead Select Mux7. Sw-RLD-RA Switch Reference Electrode to RA8. Sw-RLD-LA Switch Reference Electrode to LA9. Sw-RLD-LL Switch Reference Electrode to LL10. Sw-RLD-RL Switch Reference Electrode to RL11. MonBW Select 0.5Hz ECG high pass pole (used to restore ECG baseline).12. MuxB 0 – Select A/D Mux B; 1 - Select A/D Mux A13. Sw-RLD-V Switch Reference Electrode to V14. Sw-RespReset Switch Respiration High Pass Pole, used to restore baseline
(model 622/623)15. SpO2Reset Reset Nellcor SpO2 board (model 622/623 only)16. Resp-Off Turn respiration off when respiration not used (shuts down drive signal)
(model 622/623 only).
104 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Figure A-28. Serial communication circuit.
Signal IsolationOptocouplers are used to electrically isolate signals. The following signals are transmitted across the isolation barrier through the optocouplers:1. SpO2 out: SpO2 serial data, waveform and status information. Opto U411 Data from the SpO2 board to the CPU board.2. Serial Data: Serial Control data for isolated circuits. Opto U613 Data from the CPU board to isolated circuits.3. Serial Data Clock:Data clock for serial control data. Opto U612 Clock from the CPU board to isolated circuits. 4. ADC Clock Clock for PWM A/D converter, also used to latch control shift registers. Opto U611 Clock from the CPU board to isolated circuits.5. PWM A/D dataA/D Pulse width data. Opto U610 Pulse width data from isolated circuits to CPU board.6. Respiration ClockClock for Respiration drive circuit (same signal as power supply sync) U710 Clock from the CPU board to isolated circuits (model 622/623 only).
ECG Circuits
OverviewAtlas provides a 5-wire front end, and will be compatible with both a 3-wire and 5-wire cable. Monitor (0.5Hz to 40Hz) Extended (0.05Hz to 100Hz) bandwidth are provided. The ECG amplifier always transmits 0.05Hz to 100Hz data to the CPU board (unless in baseline restore mode), additional filtering for Monitor Bandwidth is implemented in software.
ED
ED
iso+5Vdig
SW-RLD-LL
SW-RLD-RASW-RLD-LA
SW-RLD-RL
SpO2-Reset
Mux-Lds-C
Resp-Off
Sw-RespReset
Mux-Lds-BMux-Lds-AMux-A/D-CMux-A/D-BMux-A/D-A
Sw-RL-VMuxB
MonBW
FE-Serial-Data
FE-Data-Clk
A/D-Clk
U605-out
U606
74HCT595
14
1110
1213
151234567
9
16
8
SER
SRCLKSRCLR
RCLKG
QAQBQCQDQEQFQGQH
QH
VCC
GND
U605
74HCT595
14
1110
1213
151234567
9
16
8
SER
SRCLKSRCLR
RCLKG
QAQBQCQDQEQFQGQH
QH
VCC
GND
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 105
Defib Protect, RFI FilteringThe ECG lead set includes a 1K resistor for current limiting. The neon bulbs act as a voltage clamp, limiting voltage to about 100V. Neons are chosen for their low capacitance and high DC impedance when off. Series resistors and diode clamps are used as a second set of pro-tection circuits for the front-end amplifiers. Resistors R506, R507 and Diodes D506, D507, are used to reverse bias the lead clamp diodes (D501 to D505). Two passive RC filters are used to reduce susceptibility to RFI and ESU.
Figure A-29. Defib protect and RFI filtering circuit.
Note: Typical protection for each lead wire. Model 621 uses a dual silicon series diode in place of zener diodes D506 and D507.
Front End Buffer - 1st Gain StageGain of the first stage is 9.26 (1+10K/1.21K). Bias current for each input buffer is set to 1.25V/44Meg = 28nA (VldsOff = 1.25V). On a leads-off condition, the two 22Meg resistor drives the input of the buffer to 1.25V (VldsOff), and the amplifier output saturates high (at about 5.5V). The voltage out of each buffer is monitored to detect a leads-off condition.
Figure A-30. Input buffer circuit.
fVcc
S
fVee E
E E
RA
+clamp
D501-3
-clamp
N501LAMP NEON C506
220pF
D5075.1V
1 3
R50710K
C501220pF
D5065.1V
13
D501MMBD1503A
1
3
2
R50610K
R50810K
R50151.1K
Defib ProtectRFI Filtering
To Buffer Amp
fVcc
fVee
E
VLdsOff
OutIn
U501-3
U501-2
R509-1
+
-
U501AMC34002
3
21
84 C510
220pF
R5181.21K
R51710K
R55722Meg
R50922Meg
0.1%
0.1%
Input BuffersGain = 9.26
106 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Wilson Network - Lead Select MuxA 5 wire front end must be able to render the following vectors:I LA - RAII LL - RAIII LL - LAaVR RA - 1/2*(LA + LL)aVL LA - 1/2*(RA + LL)aVF LL - 1/2*(LA + RA)V V - 1/3*(RA + LA + LL)A resistor divider network (Wilson Network) is used to create the terms above. These vec-tors are then switched though the two Lead Select Mux’s and into the differential amplifier.
Figure A-31. Lead select circuit.
Differential Amplifier and Slew rate limitA traditional 3-opamp gain stage (U507 and U508) is used to construct the differential amplifier. The topology is modified slightly with the addition of slew rate limiting (U509). The ECG signal is slew rate limited to about 100V/sec. This is done to minimize distortion of the ECG trace in the presence or large pace pulses. The differential outputs of this ampli-fier stage are used as input to the Right Leg Drive amplifier.
E
fVee
E
E
fVee
fVcc
fVcc
E
V+
RA
LA
LL
RA
V-
LL
aVL
RA
aVF
LAaVR
LA
V+
LA mux+
LL
mux-
RA
R533 10K
R536 10K
R530 10K
R529 10K
R532 10K
U5064051
13141512
1524
61110
9
3
168
7
X0X1X2X3X4X5X6X7
INHABC
X
VD
DV
SS
VEE
R534 10K
R535 10K
R537 10K
R531 10K
U5054051
13141512
1524
61110
9
3
168
7
X0X1X2X3X4X5X6X7
INHABC
X
VD
DV
SS
VEE
Lead Select
WilsonNetwork
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 107
Figure A-32. Differential amp/slew rate amp circuit.
Right Leg Drive AmplifierThe right leg amplifier performs two functions. First is to provide bias current to the input buffer amplifiers. Second, to reduce 60Hz interference (increase CMR). Patient Common mode signals are amplified and inverted, and this resultant signal used to drive the patient. Gain of the RLD amplifier at 60Hz is maximized, while keeping the system gain stable. The RLD output is mux’d to the appropriate wire depending on the chosen input vector. For example, when looking at Lead I (LA-RA), the RLD signal is switched to the LL buffer.
Figure A-33. Right leg drive circuit.
High Pass and Gain StageThe signal from the output of the differential amplifier is AC coupled before a final stage of amplification. The High Pass Pole is set to 0.05Hz (a 3.3 second time constant). Large DC signals are sometimes present, for example, following a Leads Off condition. In order to quickly restore the ECG baseline, a transistor switch (Q504, Q505) is used to change the AC pole time constant to 0.33 seconds. Op Amp U508 provides the final amplification prior to the A/D converter.
fVcc
fVee
E
fVee
fVcc
fVcc
E
fVcc
E
fVee
fVee
mux+
mux-
SingEnd Out
u508-2
diff-
u509
-4
U508-3
u501
-8
diff+
C5451000pF
+
-
U507AMC34002
3
21
84
R565121K
C543.047uF
R54610K
R54510K
C542220pF
R54410K
+
- U508AAD712
3
21
84
+
-
U507BMC34002
5
67
84
C5441000pF
R54710K
-
+ U509LMC7101
4
31
25
0.1% 0.1%
0.1%
Diff Amp and Slew Rate LimitDC Gain = 1
0.1%
E
fVcc
E
fVeefVcc
fVee
Sw-RLD-LA
Sw-RLD-RA
Sw-RLD-RL
Sw-RLD-LL
To RL
To LL
To LA
To RADiff+
Diff-
RL-mux
C514-2
U503-2
U504
DG202CSE
31
1416
119
68
1345
2
15
10
7
S1IN1
S2IN2
S3IN3
S4IN4
V+V-GND
D1
D2
D3
D4
TP551
R52510K
+
-
U503AMC34002
3
21
84
R52851.1K
R5271K
TP552
C5140.1uF
R52610K
R51610K
RLD Amp
RLD Mux
108 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Figure A-34. High pass and gain stage circuit.
Temperature Amplifier (Model 622/623 only)The temperature option of Atlas is designed to operate with YSI-400 series probes. This probe has a negative temperature coefficient, R@30C = 1815Ohms, R@40C = 1200Ohms. The temperature amplifier is configured as a non-inverting gain stage. The positive input to the amplifier is a 1.25V reference. The output of the temperature amplifier is V = Ref*(1+Rfb/Rthermistor).
The A/D converter will digitize the An-Temp input, along with the reference voltage and ground. The gain of the A/D is calibrated from the reference voltage measurement, and any drifts in the reference voltage or A/D gain are continuously compensated during monitoring.
Figure A-35. Temperature amplifier circuit.
E
fVcc
E
E
fVeeE
An-ECG
Sw-MonBw
Diff-out U508-5
Q504-d
U508-6
Q504-g
ecg-hp
Q504-s
+
-
U508BAD712
5
67
84
Q5042N7002
3
1
2R55173.2K
R553100K
R549110K
R5521K
C516.047uF
Q5052N7002
3
1
2
C5153.3uF
R55019.6K
R5481Meg C517
.01uF
High Pass (0.05Hz or 0.5Hz)2-pole low pass
Gain StageGain = 74
E
E
fVee
fVcc
f+1.24V
+Clamp-Clamp
Patient-Temp
U608-3U608-1
Temp-In
D602BAV99L
1
3
2
C633.01uF
J601
CON2
12
R627 1.21K
R62451.1K
C635 .01uF
C634 .01uF
R6261K
R6251K
C6362200pF
+
-
U608AAD712
3
21
84
TemperatureAmplifier
TemperatureThermistor
0.1%
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 109
Impedance Respiration (Model 622/623 only)
OverviewImpedance respiration is accomplished by measuring a change of resistance across the patient’s chest during breathing. The RA and LA electrodes (Lead I) are uses to acquire the respiration signal. A current source is driven through the patient, and the voltage developed across the patient is measured. The change in resistance caused by respiration is small, in the order of 1 Ohm. This small change must be measured on top of a large baseline imped-ance, typically 100 to 1000 Ohms.
Signal Source – Current DriveAn AC current source is used as the input signal, a 34.8KHz square wave. The Power supply sync signal, at 76.8KHz, is transmitted across opto isolator U710. Flip Flop U701, config-ured as a divide by 2, converts this signal to a 34.8KHz. Current through the patient is about 150uA Pk-Pk, set by the output of U710 (5V) and the circuit series impedance, 69K includ-ing cable resistance. The impedance of the patient is small (<2K) compared to the series impedance and has minimal affect on the magnitude of the drive current. Diode clamps are used to protect the respiration circuits in the event of a Defibrillation pulse.
Figure A-36. Respiration drive circuit.
Differential Amplifier and Peak DetectorThe AC current driven though the patient develops a voltage across the RA to LA electrodes. This signal is measured and amplified with the Differential Amplifier formed by U702A/B. This amplifier converts the differential voltage across the patient to single ended signal, with a gain of 16.8. Inverting this signal (U703A), and summing the original signal and inverted signal through the dual Diode D705 then forms a synchronous peak detector. Then, the voltage on C711 is the DC resistance seen across the RA to LA buffer. This baseline resis-tance is digitized, and if the signal is too large (>2.5K), a Respiration Lead Fault message is displayed. Note that this circuit measurement includes the two 1K resistors in the EKG cable set. This 2K resistance is subtracted in software before determining a leads off condi-tion.
E
E
f+5V
Resp-Off
Right-Arm
+Clamp
Left-Arm
-Clamp
Resp-Clk
RespDr+
D702-3
D701-3 C701-1
RespDr-C702-1
+ C7194.7uF
D701MMBD1503A
1
3
2
C7021000pF
D702MMBD1503A
1
3
2R70431.6K
R70331.6K
C7011000pF
R7011.96K
R7021.96K
U701A74HC74
2
3
5
6
144
7
1
D
CLK
Q
Q
VCC
PR
GND
CL
RespirationDriveCircuit
110 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix A Theory of Operation
Figure A-37. Respiration diff amp circuit.
Gain and FilteringThe DC content (baseline resistance) of the respiration signal is not needed, so the signal is next AC coupled, and additional gain applied before digitization. Low pass filtering is per-formed at this stage to reduce high frequency noise outside the respiration signal band-width. A baseline-reset circuit (transistor switch Q701) is used to quickly restore the high pass pole if excessive DC voltage is present, for example following a Leads-Off condition.
Figure A-38. Gain and filter circuit.
SpO2 CircuitsThe SpO2 transducer senses oxygen content of functional arteriolar hemoglobin through the use of light (red and infrared) passed through the sensor. The reflective characteristics of hemoglobin at the wavelengths used allow the pulse oximetry circuits to obtain changing saturation levels. This data is then processed to obtain the oxygen saturation percentage and pulse rate.
E
fVee
fVcc
E
fVee
E
fVee
fVcc
fVcc
E
EE
E
Resp-DC
Left-Arm
Right-Arm
D605-C
+Clamp-Clamp
U702-6
D70
3-1U70
3-2
U702-1
U702-2
U702-5D704-3
U702-3D703-3
U702-7
R7163.16K
+
-
U702B
AD7125
67
84
R7153.16K
R710464K
+
-
U703AAD712
3
21
84
R7121K
R71415.8K
D704MMBD1503A
1
3
2
R71115.8K
C707330pF
C706330pF
D703MMBD1503A
1
3
2
D705MMBD354LT1
1
3
2
R7131K
R7081.96K
+
- U702AAD712
3
21
84
R709464K
R7071.96K
C7110.1uF
R7173.16K
C720.047uF
R724196KRespiration
Diff Amp
E
E
fVee
E
fVcc
E
E
Resp-Reset
An-Resp
Q701-d
Resp-AC
Q70
1-g
U703-6
U703-5
R722316
+
- U703BAD712
5
67
84
D706MMBD1503A
1
3
2
R720100K
C714.047uF
C7123.3uF
R71951.1K
R7231Meg
Q701MMBF4393L
23
1
C7130.1uF
R721316K
R718825K
B.W. = .06Hz to 16 Hz Gain =1000B.W. = 10Hz
D605-C
Theory of Operation Appendix A
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 111
Nellcor or Nonin Medical provides the SpO2 board (Nonin only for the model 621). The SpO2 board includes amplifiers and processing, and transmits serial data to the CPU board (Waveform data, SpO2%, and pulse rate). The Atlas monitor provides electrical isolation (power and data) to the SpO2 board. Note that you must use Nonin probes with the Nonin SpO2 board, and Nellcor probes with Nellcor SpO2 board.
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 113
Table B-1. Atlas 621N0 repair parts.
Part# Description
620001-503 MAIN PCB ASSY - LOW END
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620038 NELLCOR LABEL (CARTON)
6200-43E SERVICE MANUAL (ATLAS)
620089 BATTERY, 3V LITHIUM
620105-3 BATTERY DOOR
620119 LATCH SPO2
620125-502 MAIN CASE/HANDLE SET W/PANEL
620126-4 BEZEL SET - HEAT TRANSFER
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620144 BRACKET SPO2
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620170 CABLE ASSY NELLCOR
620171 CABLE ASSY SPEAKER
620172-2 CABLE ASSY AC
620178 CABLE ASSY SP02
620181-1 LABEL,BOTTOM,LOW END
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
114 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620194 WASHER,FLT.33 X.62 X.049 PNEUM
620197 BUSHING, SPLIT NYLON
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620214-1 TUBING, SILICONE, 1/16 .50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING ““Y”” 1/8 X 1/8 X 1/8
620217 FITTING, ““T””, 1/8 X 1/16X 1/8
620377-1 NELLCOR WORKS HERE” LABEL
620377-2 NELLCOR PATENT LABEL
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
620384-2C LOW LABEL W/FREEZE (CHINESE)
620384-2E DISPLAY LABEL-LOW/FREEZE/ENG
620384-2F DISPLAY LABEL-LOW/FREEZE/FR.
620384-2G LOW LABEL W/FREEZE (GERMAN)
620384-2I LOW LABEL W/PRINTER (ITALIAN)
620384-2J LOW LABEL W/FREEZE (JAPANESE)
620384-2P LOW LABEL W/FREEZE (PORT)
620384-2S LOW LABEL W/FREEZE (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-2 LABEL, NELLCOR SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 “WASHER, SHOULDER PLATED
Table B-1. Atlas 621N0 repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 115
620403 FLAT TIE HOLDER
620432 ATLAS MONITOR CALIBRATION CERT
620494-501 ATLAS FAN KIT
620530 D CONN.LOCATOR\NELLCOR MP506
620531 CABLE ASSY,NELLCOR MP506 SEN.
620532 NELLCOR MP506 SPO2 PCB
761077-1 WIRE TIE
Table B-1. Atlas 621N0 repair parts.
Part# Description
116 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
Table B-2. Atlas 621NP repair parts.
Part# Description
620001-503 MAIN PCB ASSY - LOW END
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620013-502 PRINTER PCB
620038 NELLCOR LABEL (CARTON)
6200-43E SERVICE MANUAL (ATLAS)
620089 BATTERY, 3V LITHIUM
620105-3 BATTERY DOOR
620117 PRINTER DOOR BUTTON
620119 LATCH SPO2
620125-501 MAIN CASE/HANDLE SET
620126-4 BEZEL SET - HEAT TRANSFER
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620134-501 GEAR ASSY
620138-501 PRINTER DOOR ASSY
620139-501 PRINTER FRAME ASSE
620140-501 MAIN PRINTER ASSY
620140-502 PRINTER ASSY W/STATIC BAG
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620144 BRACKET SPO2
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620170 CABLE ASSY NELLCOR
620171 CABLE ASSY SPEAKER
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 117
620172-2 CABLE ASSY AC
620176 CABLE ASSY - PRINTER
620177 CABLE ASSY - PRINT HEAD
620178 CABLE ASSY SP02
620181-1 LABEL,BOTTOM,LOW END
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
620194 WASHER,FLT.33 X.62 X.049 PNEUM
620197 BUSHING, SPLIT NYLON
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620207 NUT, M3-.5 HEX KEPS ST ZN
620214-1 TUBING, SILICONE, 1/16 .50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING ““Y”” 1/8 X 1/8 X 1/8
620217 FITTING, ““T””, 1/8 X 1/16X 1/8
620377-1 NELLCOR WORKS HERE LABEL
620377-2 NELLCOR PATENT LABEL
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
620384-1C LOW LABEL W/PRINTER (CHINESE)
620384-1E DISPLAY LABEL/LOW/PRINTER-ENG
620384-1F LOW LABEL W/PRINTER (FRENCH)
Table B-2. Atlas 621NP repair parts.
Part# Description
118 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620384-1G LOW LABEL W/PRINTER (GERMAN)
620384-1I LOW LABEL W/PRINTER (ITALIAN)
620384-1J LOW LABEL W/PRINTER (JAPANESE)
620384-1P LOW LABEL W/PRINTER (PORT)
620384-1S LOW LABEL W/PRINTER (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-2 LABEL, NELLCOR SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 WASHER, SHOULDER PLATED
620403 FLAT TIE HOLDER
620494-501 ATLAS FAN KIT
620530 D CONN.LOCATOR\NELLCOR MP506
620531 CABLE ASSY,NELLCOR MP506 Sen.
620532 NELLCOR MP506 SPO2 PCB
761077-1 WIRE TIE
Table B-2. Atlas 621NP repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 119
Table B-3. Atlas 621S0 repair parts.
Part# Description
620001-503 MAIN PCB ASSY - LOW END
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
6200-43E SERVICE MANUAL (ATLAS)
620089 BATTERY, 3V LITHIUM
620105-3 BATTERY DOOR
620119 LATCH SPO2
620125-502 MAIN CASE/HANDLE SET W/PANEL
620126-4 BEZEL SET - HEAT TRANSFER
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620144 BRACKET SPO2
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620171 CABLE ASSY SPEAKER
620172-2 CABLE ASSY AC
620181-1 LABEL,BOTTOM,LOW END
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
620194 WASHER,FLT.33 X.62 X.049 PNEUM
620197 BUSHING, SPLIT NYLON
620198 FOOT
120 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620214-1 TUBING, SILICONE, 1/16 .50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING ““Y”” 1/8 X 1/8 X 1/8
620217 FITTING, ““T””, 1/8 X 1/16X 1/8
620373-501 NONIN SUB ASSEMBLY
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
620384-2C LOW LABEL W/FREEZE (CHINESE)
620384-2E DISPLAY LABEL-LOW/FREEZE/ENG
620384-2F DISPLAY LABEL-LOW/FREEZE/FR.
620384-2G LOW LABEL W/FREEZE (GERMAN)
620384-2I LOW LABEL W/PRINTER (ITALIAN)
620384-2J LOW LABEL W/FREEZE (JAPANESE)
620384-2P LOW LABEL W/FREEZE (PORT)
620384-2S LOW LABEL W/FREEZE (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-1 LABEL, NONIN SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 WASHER, SHOULDER PLATED
620403 FLAT TIE HOLDER
620494-501 ATLAS FAN KIT
761077-1 WIRE TIE
Table B-3. Atlas 621S0 repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 121
Table B-4. Atlas 621SP repair parts.
Part# Description
620001-503 MAIN PCB ASSY - LOW END
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620013-502 PRINTER PCB
6200-43E SERVICE MANUAL (ATLAS)
620089 BATTERY, 3V LITHIUM
620105-3 BATTERY DOOR
620117 PRINTER DOOR BUTTON
620119 LATCH SPO2
620125-501 MAIN CASE/HANDLE SET
620126-4 BEZEL SET - HEAT TRANSFER
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620134-501 GEAR ASSY
620138-501 PRINTER DOOR ASSY
620139-501 PRINTER FRAME ASSE
620140-501 MAIN PRINTER ASSY
620140-502 PRINTER ASSY W/STATIC BAG
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620144 BRACKET SPO2
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620171 CABLE ASSY SPEAKER
620172-2 CABLE ASSY AC
620176 CABLE ASSY - PRINTER
122 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620177 CABLE ASSY - PRINT HEAD
620181-1 LABEL,BOTTOM,LOW END
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
620194 WASHER,FLT.33 X.62 X.049 PNEUM
620197 BUSHING, SPLIT NYLON
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620207 NUT, M3-.5 HEX KEPS ST ZN
620214-1 TUBING, SILICONE, 1/16 .50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING “Y” 1/8 X 1/8 X 1/8
620217 FITTING, “T”, 1/8 X 1/16X 1/8
620373-501 NONIN SUB ASSEMBLY
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
620384-1C LOW LABEL W/PRINTER (CHINESE)
620384-1E DISPLAY LABEL/LOW/PRINTER-ENG
620384-1F LOW LABEL W/PRINTER (FRENCH)
620384-1G LOW LABEL W/PRINTER (GERMAN)
620384-1I LOW LABEL W/PRINTER (ITALIAN)
620384-1J LOW LABEL W/PRINTER (JAPANESE)
620384-1P LOW LABEL W/PRINTER (PORT)
Table B-4. Atlas 621SP repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 123
620384-1S LOW LABEL W/PRINTER (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-1 LABEL, NONIN SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 WASHER, SHOULDER PLATED
620403 FLAT TIE HOLDER
620494-501 ATLAS FAN KIT
761077-1 WIRE TIE
Table B-4. Atlas 621SP repair parts.
Part# Description
124 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
Table B-5. Atlas 622N0 repair parts.
Part# Description
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620016-503 MAIN PCB ASSY-MID/HIGH END
620038 NELLCOR LABEL (CARTON)
6200-43E SERVICE MANUAL (ATLAS)
620105-1 BATTERY DOOR
620105-3 BATTERY DOOR
620119 LATCH SPO2
620125-502 MAIN CASE/HANDLE SET W/PANEL
620126-5 BEZEL SET/MID PRINTED
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620143 NUT TEMPERATURE
620144 BRACKET SPO2
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620170 CABLE ASSY NELLCOR
620171 CABLE ASSY SPEAKER
620172-2 CABLE ASSY AC
620173 CABLE-TEMP SENSOR TO MAIN BD
620175 CABLE ASSY - FAN
620178 CABLE ASSY SP02
620181-2 LABEL,BOTTOM,MID END
620182 LABEL - RS232
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 125
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
620194 WASHER,FLT.33 X.62 X.049 PNEUM
620197 BUSHING, SPLIT NYLON
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620214-1 TUBING, SILICONE, 1/16 .50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING “Y” 1/8 X 1/8 X 1/8
620217 FITTING, “T”, 1/8 X 1/16X 1/8
620377-1 NELLCOR WORKS HERE LABEL
620377-2 NELLCOR PATENT LABEL
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
620384-4C MID LABEL W/FREEZE (CHINESE)
620384-4E DISPLAY LABEL-MID/FREEZE/ENG
620384-4F MID LABEL W/FREEZE (FRENCH)
620384-4G MID LABEL W/FREEZE (GERMAN)
620384-4I LOW LABEL W/FREEZE (ITALIAN)
620384-4J LOW LABEL W/FREEZE (JAPANESE)
620384-4P LOW LABEL W/FREEZE (PORT)
620384-4S LOW LABEL W/FREEZE (SPANISH)
620385 SUB-LABEL DISPLAY
Table B-5. Atlas 622N0 repair parts.
Part# Description
126 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620386 FASTON TAB
620388-2 LABEL, NELLCOR SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 WASHER, SHOULDER PLATED
620395-501 REPLACEMENT BATTERY SUB ASSY
620403 FLAT TIE HOLDER
620530 D CONN.LOCATOR\NELLCOR MP506
620531 CABLE ASSY,NELLCOR MP506 SEN.
620532 NELLCOR MP506 SPO2 PCB
761077-1 WIRE TIE
Table B-5. Atlas 622N0 repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 127
Table B-6. Atlas 622NP repair parts.
Part# Description
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620013-502 PRINTER PCB
620016-503 MAIN PCB ASSY-MID/HIGH END
620038 NELLCOR LABEL (CARTON)
6200-43E SERVICE MANUAL (ATLAS)
620105-3 BATTERY DOOR
620117 PRINTER DOOR BUTTON
620119 LATCH SPO2
620125-501 MAIN CASE/HANDLE SET
620126-5 BEZEL SET/MID PRINTED
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620134-501 GEAR ASSY
620138-501 PRINTER DOOR ASSY
620139-501 PRINTER FRAME ASSE
620140-501 MAIN PRINTER ASSY
620140-502 PRINTER ASSY W/STATIC BAG
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620143 NUT TEMPERATURE
620144 BRACKET SPO2
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620170 CABLE ASSY NELLCOR
620171 CABLE ASSY SPEAKER
128 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620172-2 CABLE ASSY AC
620173 CABLE-TEMP SENSOR TO MAIN BD
620175 CABLE ASSY - FAN
620176 CABLE ASSY - PRINTER
620177 CABLE ASSY - PRINT HEAD
620178 CABLE ASSY SP02
620181-2 “LABEL,BOTTOM,MID END “
620182 LABEL - RS232
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
620194 WASHER,FLT.33 X.62 X.049 PNEUM
620197 BUSHING, SPLIT NYLON
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620207 NUT, M3-.5 HEX KEPS ST ZN
620214-1 TUBING, SILICONE, 1/16 .50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING ““Y”” 1/8 X 1/8 X 1/8
620217 FITTING, ““T””, 1/8 X 1/16X 1/8
620377-1 NELLCOR WORKS HERE”” LABEL
620377-2 NELLCOR PATENT LABEL
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
Table B-6. Atlas 622NP repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 129
620384-3C MID LABEL W/PRINTER(CHINESE)
620384-3E DISPLAY LABEL-MID/PRINTER/ENG
620384-3F MID LABEL W/PRINTER (FRENCH)
620384-3G MID LABEL W/PRINTER (GERMAN)
620384-3I MID LABEL W/PRINTER (ITALIAN)
620384-3J MID LABEL W/PRINTER (JAPANESE)
620384-3P MID LABEL W/PRINTER (PORT)
620384-3S LOW LABEL W/PRINTER (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-2 LABEL, NELLCOR SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 WASHER, SHOULDER PLATED
620395-501 REPLACEMENT BATTERY SUB ASSY
620403 FLAT TIE HOLDER
620530 D CONN.LOCATOR\NELLCOR MP506
620531 CABLE ASSY,NELLCOR MP506 SEN.
620532 NELLCOR MP506 SPO2 PCB
761077-1 WIRE TIE
Table B-6. Atlas 622NP repair parts.
Part# Description
130 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
Table B-7. Atlas 622S0 repair parts.
Part# Description
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620016-503 MAIN PCB ASSY-MID/HIGH END
6200-43E SERVICE MANUAL (ATLAS)
620105-3 BATTERY DOOR
620119 LATCH SPO2
620125-502 MAIN CASE/HANDLE SET W/PANEL
620126-5 BEZEL SET/MID PRINTED
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620143 NUT TEMPERATURE
620144 BRACKET SPO2
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620171 CABLE ASSY SPEAKER
620172-2 CABLE ASSY AC
620173 CABLE-TEMP SENSOR TO MAIN BD
620175 CABLE ASSY - FAN
620181-2 LABEL,BOTTOM,MID END
620182 LABEL - RS232
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 131
620194 WASHER,FLT.33 X.62 X.049 PNEUM
620197 BUSHING, SPLIT NYLON
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620214-1 TUBING, SILICONE, 1/16.50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING “Y” 1/8 X 1/8 X 1/8
620217 FITTING, “T”, 1/8 X 1/16X 1/8
620373-501 NONIN SUB ASSEMBLY
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
620384-4C MID LABEL W/FREEZE (CHINESE)
620384-4E DISPLAY LABEL-MID/FREEZE/ENG
620384-4F MID LABEL W/FREEZE (FRENCH)
620384-4G MID LABEL W/FREEZE (GERMAN)
620384-4I LOW LABEL W/FREEZE (ITALIAN)
620384-4J LOW LABEL W/FREEZE (JAPANESE)
620384-4P LOW LABEL W/FREEZE (PORT)
620384-4S LOW LABEL W/FREEZE (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-1 LABEL, NONIN SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 WASHER, SHOULDER PLATED
620395-501 REPLACEMENT BATTERY SUB ASSY
Table B-7. Atlas 622S0 repair parts.
Part# Description
132 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620403 FLAT TIE HOLDER
761077-1 WIRE TIE
Table B-7. Atlas 622S0 repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 133
Table B-8. Atlas 622SP repair parts.
Part# Description
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620013-502 PRINTER PCB
620016-503 MAIN PCB ASSY-MID/HIGH END
6200-43E SERVICE MANUAL (ATLAS)
620105-3 BATTERY DOOR
620117 PRINTER DOOR BUTTON
620119 LATCH SPO2
620125-501 MAIN CASE/HANDLE SET
620126-5 BEZEL SET/MID PRINTED
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620134-501 GEAR ASSY
620138-501 PRINTER DOOR ASSY
620139-501 PRINTER FRAME ASSE
620140-501 MAIN PRINTER ASSY
620140-502 PRINTER ASSY W/STATIC BAG
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620143 NUT TEMPERATURE
620144 BRACKET SPO2
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620171 CABLE ASSY SPEAKER
620172-2 CABLE ASSY AC
620173 CABLE-TEMP SENSOR TO MAIN BD
134 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620175 CABLE ASSY - FAN
620176 CABLE ASSY - PRINTER
620177 CABLE ASSY - PRINT HEAD
620181-2 LABEL,BOTTOM,MID END
620182 LABEL - RS232
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
620194 WASHER,FLT.33 X.62 X.049 PNEUM
620197 BUSHING, SPLIT NYLON
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620207 NUT, M3-.5 HEX KEPS ST ZN
620214-1 TUBING, SILICONE, 1/16 .50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING ““Y”” 1/8 X 1/8 X 1/8
620217 FITTING, ““T””, 1/8 X 1/16X 1/8
620373-501 NONIN SUB ASSEMBLY
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
620384-3C MID LABEL W/PRINTER(CHINESE)
620384-3E DISPLAY LABEL-MID/PRINTER/ENG
620384-3F MID LABEL W/PRINTER (FRENCH)
620384-3G MID LABEL W/PRINTER (GERMAN)
Table B-8. Atlas 622SP repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 135
620384-3I MID LABEL W/PRINTER (ITALIAN)
620384-3J MID LABEL W/PRINTER (JAPANESE)
620384-3P MID LABEL W/PRINTER (PORT)
620384-3S LOW LABEL W/PRINTER (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-1 LABEL, NONIN SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 WASHER, SHOULDER PLATED
620395-501 REPLACEMENT BATTERY SUB ASSY
620403 FLAT TIE HOLDER
761077-1 WIRE TIE
Table B-8. Atlas 622SP repair parts.
Part# Description
136 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
Table B-9. Atlas 622NP repair parts.
Part# Description
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620013-502 PRINTER PCB
620016-503 MAIN PCB ASSY-MID/HIGH END
620032-1 ETCO2 PCB ASSY
620034 ETCO2 CONNECTOR & CABLE
620038 NELLCOR LABEL (CARTON)
6200-43E SERVICE MANUAL (ATLAS)
620105-3 BATTERY DOOR
620117 PRINTER DOOR BUTTON
620119 LATCH SPO2
620125-501 MAIN CASE/HANDLE SET
620126-6 BEZEL SET/HIGH HEAT TRANSFER
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620134-501 GEAR ASSY
620138-501 PRINTER DOOR ASSY
620139-501 PRINTER FRAME ASSE
620140-501 MAIN PRINTER ASSY
620140-502 PRINTER ASSY W/STATIC BAG
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620143 NUT TEMPERATURE
620144 BRACKET SPO2
620148 GASKET CO2 EXHAUST
620149 FITTING,1/16 X 1/8-27 NPT
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 137
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620170 CABLE ASSY NELLCOR
620171 CABLE ASSY SPEAKER
620172-2 CABLE ASSY AC
620173 CABLE-TEMP SENSOR TO MAIN BD
620175 CABLE ASSY - FAN
620176 CABLE ASSY - PRINTER
620177 CABLE ASSY - PRINT HEAD
620178 CABLE ASSY SP02
620181-3 LABEL,BOTTOM,HIGH END
620182 LABEL - RS232
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
620194 WASHER,FLT.33 X.62 X.049 PNEUM
620197 BUSHING, SPLIT NYLON
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620207 NUT, M3-.5 HEX KEPS ST ZN
620214-1 TUBING, SILICONE, 1/16 .50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING “Y” 1/8 X 1/8 X 1/8
620217 FITTING, “T”, 1/8 X 1/16X 1/8
620377-1 NELLCOR WORKS HERE”” LABEL
620377-2 NELLCOR PATENT LABEL
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
Table B-9. Atlas 622NP repair parts.
Part# Description
138 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
620384-5C HIGH LABEL (CHINESE)
620384-5E DISPLAY LABEL-HIGH/PRINTER/ENG
620384-5F HIGH LABEL (FRENCH)
620384-5G HIGH LABEL (GERMAN)
620384-5I HIGH LABEL (ITALIAN)
620384-5J HIGH LABEL (JAPANESE)
620384-5P HIGH LABEL (PORT)
620384-5S HIGH LABEL (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-2 LABEL, NELLCOR SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 WASHER, SHOULDER PLATED
620395-501 REPLACEMENT BATTERY SUB ASSY
620403 FLAT TIE HOLDER
620411-1C PRYON CO2 CAUTION LABEL (Chinese)
620411-1E PRYON CO2 CAUTION LABEL (English)
620411-1F PRYON CO2 CAUTION LABEL (French)
620411-1G PRYON CO2 CAUTION LABEL (German)
620411-1J PRYON CO2 CAUTION LABEL (Japanese)
620411-1P PRYON CO2 CAUTION LABEL (Port)
620411-1S PRYON CO2 CAUTION LABEL (Spanish)
620524 CABLE-CO2 TO MAIN BD
620530 D CONN.LOCATOR\NELLCOR MP506
620531 CABLE ASSY,NELLCOR MP506 SEN.
620532 NELLCOR MP506 SPO2 PCB
623NP-ACCKT ATLAS ACC KIT/HIGH/NEL-W/PRNT
761077-1 WIRE TIE
Table B-9. Atlas 622NP repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 139
Table B-10. Atlas 623SP repair parts.
Part# Description
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620013-502 PRINTER PCB
620016-503 MAIN PCB ASSY-MID/HIGH END
620032-1 ETCO2 PCB ASSY
620034 ETCO2 CONNECTOR & CABLE
6200-43E SERVICE MANUAL (ATLAS)
620105-3 BATTERY DOOR
620117 PRINTER DOOR BUTTON
620119 LATCH SPO2
620125-501 MAIN CASE/HANDLE SET
620126-6 BEZEL SET/HIGH HEAT TRANSFER
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620134-501 GEAR ASSY
620138-501 PRINTER DOOR ASSY
620139-501 PRINTER FRAME ASSE
620140-501 MAIN PRINTER ASSY
620140-502 PRINTER ASSY W/STATIC BAG
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620143 NUT TEMPERATURE
620144 BRACKET SPO2
620148 GASKET CO2 EXHAUST
620149 FITTING,1/16 X 1/8-27 NPT
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 CABLE-CONN TO MAIN BD,ECG
620167 CABLE-MAIN BD TO DISPLAY BD
140 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
620168-2 CABLE ASSY POWER SUPPLY
620171 CABLE ASSY SPEAKER
620172-2 CABLE ASSY AC
620173 CABLE-TEMP SENSOR TO MAIN BD
620175 CABLE ASSY - FAN
620176 CABLE ASSY - PRINTER
620177 CABLE ASSY - PRINT HEAD
620181-3 LABEL,BOTTOM,HIGH END
620182 LABEL - RS232
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 NUT, HEX 5/16-32 X.095 PNEUM
620194 WASHER,FLT.33 X.62 X.049 PNEUM”
620197 BUSHING, SPLIT NYLON
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620207 NUT, M3-.5 HEX KEPS ST ZN
620214-1 TUBING, SILICONE, 1/16 .50
620215-1 TUBING, SILICONE 1/8 X1.00
620215-2 TUBING, SILICONE 1/8 X 2.125
620215-3 TUBING, SILICONE 1/8 X 7.50
620215-4 TUBING, SILICONE 1/8 X.750
620216 FITTING “Y” 1/8 X 1/8 X 1/8
620217 FITTING, “T”, 1/8 X 1/16X 1/8
620373-501 NONIN SUB ASSEMBLY
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
Table B-10. Atlas 623SP repair parts.
Part# Description
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 141
620384-5C HIGH LABEL 620384-5E DISPLAY LABEL-HIGH/PRINTER/ENG
620384-5F HIGH LABEL (FRENCH)
620384-5G HIGH LABEL (GERMAN)
620384-5I HIGH LABEL (ITALIAN)
620384-5J HIGH LABEL (JAPANESE)
620384-5P HIGH LABEL (PORT)
620384-5S HIGH LABEL (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-1 LABEL, NONIN SENSOR
620393 PWR SUPPLY INSULATOR LABEL
620394-1 WASHER, SHOULDER PLATED
620395-501 REPLACEMENT BATTERY SUB ASSY
620403 FLAT TIE HOLDER
620411-1C PRYON CO2 CAUTION LABEL (Chinese)
620411-1E PRYON CO2 CAUTION LABEL (English)
620411-1F PRYON CO2 CAUTION LABEL (French)
620411-1G PRYON CO2 CAUTION LABEL (German)
620411-1I PRYON CO2 CAUTION LABEL (Italian)
620411-1J PRYON CO2 CAUTION LABEL (Japanese)
620411-1P PRYON CO2 CAUTION LABEL (Port)
620411-1S PRYON CO2 CAUTION LABEL (Spanish)
620524 CABLE-CO2 TO MAIN BD
761077-1 WIRE TIE
Table B-10. Atlas 623SP repair parts.
Part# Description
142 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
Table B-11. Atlas 623NP repair parts.
Part# Description
620004-502 ATLAS CPU PCB ASSY
620007-501 FRONT PANEL DISPLAY PCB ASSY.
620013-502 PRINTER PCB
620016-503 MAIN PCB ASSY-MID/HIGH END
620032-1 ETCO2 PCB ASSY
620034 ETCO2 CONNECTOR & CABLE
620038 NELLCOR LABEL (CARTON)
6200-43E SERVICE MANUAL (ATLAS)
620105-3 BATTERY DOOR
620117 PRINTER DOOR BUTTON
620119 LATCH SPO2
620125-501 MAIN CASE/HANDLE SET
620126-6 BEZEL SET/HIGH HEAT TRANSFER
620131-1 MAIN FOAM
620132-2 TOP FOAM
620133 BP FOAM
620134-501 GEAR ASSY
620138-501 PRINTER DOOR ASSY
620139-501 PRINTER FRAME ASSE
620140-501 MAIN PRINTER ASSY
620140-502 PRINTER ASSY W/STATIC BAG
620141 METAL HOUSING - TOP
620142-1 METAL HOUSING-BOTTOM (LG)
620143 NUT TEMPERATURE
620144 BRACKET SPO2
620148 GASKET CO2 EXHAUST
620149 “FITTING,1/16 X 1/8-27 NPT “
620150-1 AC/DC POWER SUPPLY
620156 PUMP
620157 STEPPER VALVE
620158 CHECK VALVE
620163 CABLE ASSY -PUMP/PNEUMATIC VLV
620165 “CABLE-CONN TO MAIN BD,ECG “
Repair Parts Lists Appendix B
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 143
Part# Description
620167 CABLE-MAIN BD TO DISPLAY BD
620168-2 CABLE ASSY POWER SUPPLY
620170 CABLE ASSY NELLCOR
620171 CABLE ASSY SPEAKER
620172-2 CABLE ASSY AC
620173 CABLE-TEMP SENSOR TO MAIN BD
620175 CABLE ASSY - FAN
620176 CABLE ASSY - PRINTER
620177 CABLE ASSY - PRINT HEAD
620178 CABLE ASSY SP02
620181-3 “LABEL,BOTTOM,HIGH END “
620182 LABEL - RS232
620187-501 PNEUMATIC SUB ASSY
620189 4-20 X 5/16 SLT/TORX PN PL ZIN
620192-1 PNEUMATIC CONNECTOR
620193 “NUT, HEX 5/16-32 X.095 PNEUM “
620194 “WASHER,FLT.33 X.62 X.049 PNEUM”
620197 “BUSHING, SPLIT NYLON “
620198 FOOT
620200-501 CRT SUB ASY
620205 4-40 X .31 TX PN MC ST ZN
620207 “NUT, M3-.5 HEX KEPS ST ZN “
620214-1 “TUBING, SILICONE, 1/16.50”” “
620215-1 “TUBING, SILICONE 1/8 X1.00”” “
620215-2 “TUBING, SILICONE 1/8 X 2.125”” “
620215-3 “TUBING, SILICONE 1/8 X 7.50”” “
620215-4 “TUBING, SILICONE 1/8 X.750”” “
620216 “FITTING ““Y”” 1/8 X 1/8 X 1/8 “
620217 “FITTING, ““T””, 1/8 X 1/16X 1/8 “
620377-1 “““NELLCOR WORKS HERE”” LABEL “
620377-2 NELLCOR PATENT LABEL
620378-1 ATLAS KEYPAD(BP START/CANCEL)
620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)
620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)
Table B-11. Atlas 623NP repair parts.
144 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix B Repair Parts List
Part# Description
620378-4 ATLAS KEYPAD(4 ALARMS)
620378-5 ATLAS KEYPAD(SILENCE ALARM)
620378-6 ATLAS KEYPAD(SILENCE BELL)
620379-501 MONITOR BOX W/INSERTS
620384-5C HIGH LABEL (CHINESE)
620384-5E DISPLAY LABEL-HIGH/PRINTER/ENG
620384-5F HIGH LABEL (FRENCH)
620384-5G HIGH LABEL (GERMAN)
620384-5I HIGH LABEL (ITALIAN)
620384-5J HIGH LABEL (JAPANESE)
620384-5P HIGH LABEL (PORT)
620384-5S HIGH LABEL (SPANISH)
620385 SUB-LABEL DISPLAY
620386 FASTON TAB
620388-2 “LABEL, NELLCOR SENSOR “
620393 PWR SUPPLY INSULATOR LABEL
620394-1 “WASHER, SHOULDER PLATED “
620395-501 REPLACEMENT BATTERY SUB ASSY
620403 FLAT TIE HOLDER
620411-1C PRYON CO2 CAUTION LABEL (Chinese)
620411-1E PRYON CO2 CAUTION LABEL (English)
620411-1F PRYON CO2 CAUTION LABEL (French)
620411-1G PRYON CO2 CAUTION LABEL (German)
620411-1J PRYON CO2 CAUTION LABEL (Japanese)
620411-1P PRYON CO2 CAUTION LABEL (Port)
620411-1S PRYON CO2 CAUTION LABEL (Spanish)
620524 CABLE-CO2 TO MAIN BD
620530 D CONN.LOCATOR\NELLCOR MP506
620531 “CABLE ASSY,NELLCOR MP506 SEN. “
620532 NELLCOR MP506 SPO2 PCB
623NP-ACCKT ATLAS ACC KIT/HIGH/NEL-W/PRNT
761077-1 WIRE TIE
Table B-11. Atlas 623NP repair parts.
Welch Allyn Atlas Monitor, Service Manual 6200-43E Rev D 145
Figure C-1. Atlas Interconnect Diagram.
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 147
Figure D-1. Atlas model 200 main board.
AC/DC Power
Connector
Front Panel
DisplayConnector
Main PCA
Connector
Backup
Battery
RecorderBoard
Connector
CRT Board
Connector
3V Lithium
Speaker Drive
Serial
Data Out
4Vpp max.
NIBP - Page 2
Serial I/O
connector
Model 200 Serial I/O
(manufacturing testonly)
Fan
Connector
Page3
Page2
Page1
Rick Myers
Rick Myers
3/05/99620002.dsn
5-39118 JAC 3/15/99 LPP
L.Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/17/99
B See ECN worksheet
AC
minimum
loadC
Improvements for ESD
and Fast Transients
5-39456 4/27/99LPP LPP
5-39822 LPP LPP6/23/99
DMods to U2 clock line,
NVRAM pullup
(pg 3)
(pg 3)
(pg 3)
LPP5-39934 7/9/99LPP
F
Add Nellcor SpO2 cabability.
Modify RLD to reduce V-lead noise.
Improve ESU rejection.
3/05/99
Add 330uF bypass for Nellcor 506
board.G
5-44460 LPP 3/26/02 JK
JK5-44857 LPP 7/18/02
U7-wc
FE-Data
R17-1
Power-Sync
Spare-3
NIBP-15mmHg
Spare-2
FE-Data
ETCO2-Tx
SCD
SPO2-Tx
NIBP-Safety
SCD
HRESET
NIBP-OP
Video-VSync
Video-HSync
Video-VSync
Video-HSync
NIBP-PWM-ADC
NIBP-Valve-Close
NIBP-Offset-DAC
ETCO2-Rx
Batt-ID
Power-Sync
EKG-PWM-ADC
Q1-e
PIC-Clk
PIC-Data
NIBP2-PW-ADC
Q2-c
q4-d
Q2-b
Nurse-Call
LED-Latch-b
SPO2-Rx
U8-6
RS232-RX
SM
FE-Clock
U9-3
LED-Data-b
Audio-Shutdown
Rec-Data
NIBP-Data
RS232-Rx
U8-5
LED-Latch
LED-Latch
Rec-Strobe
Audio-Shutdown
Key-Data
Tx
Rec-Data-Latch
Rec-Supply-On
U9-4
Rec-Motor-Step
Rec-Clock
SP
Rec-Motor-Step
EKG-Data-Clock
RS232-Tx
Rx
U8-4
Rec-Strobe
Rec-Data
Key-Latch-n-b
Key-Clock-b
SPO2-Rx
AC
ON
-LED
U8-2
U8-1
Rec-Clock
SPI-data-in
Rec-Data-Latch
U8-3
EROM-wr
LED-On
Speaker-Audio
SCL
Key-Latch-n
Key-Clock
SPI-Data-Out
LED-Data
SPI-Clock
Key-Latch-n
LED-On
Video-Data
EKG-ADC-Clock
Video-Data
ADC-Clock
+3.3V
Vbackup
1
2
3
4
5
6
7
3 4
4
5
6
56
3
4
1 672
8
5
3
1
2
11
33
55
77
99
1111
1313
1515
1717
1919
2121
2323
2525
2727
2929
3131
3333
3535
3737
3939
4141
4343
4545
4747
4949
5151
5353
5555
5757
5959
22
44
66
88
1010
1212
1414
1616
1818
2020
2222
2424
2626
2828
3030
3232
3434
3636
3838
4040
4242
4444
4646
4848
5050
5252
5454
5656
5858
6060
9
10
8
+1
+3
+5
+7
+9
+11
+13
+2
+4
+6
+8
+10
+12
+14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
1
2
3
4
5
6
1
2
3
3
1
2
12
12
13
11
1
2
1
2
3
1
2
3
4
5
6
7
8
13 12
1
2
R1OUT12
R2OUT9
T1IN11
T2IN10
C+1
C1-3
C2+4
C2-5
V+2
V-6
R1IN13
R2IN8
T1OUT14
T2OUT7
3
1
2
1
2
9 8
11 10
A01
A12
A23
SCL6
WC7
SDA5
3
1
2
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
J1
CON7
U1B
74HCT04
C37
0.1uF
C32
0.1uF
R22
10K
U3B
74HCT08
U1C
74HCT04
C4
330uF+
C7
330uF+ U9
TPA301
+
-
C33
0.1uF
Q3
2N7002
TP8
R21
10K
TP7
J4
Socket 30x2
U3C
74HCT08
R2
1.96K
R19
19.6K
TP18
R4
10K
J8
CON14AP
TP9
J7
CON24B
U2
74HCT595
TP10
C22
.047uF
TP17
J6
CON6
C39
.047uF
C8
.047uF
TP23
U3A
74HCT08
C36
4.7uF
+
C3
220pF
Q2
MMBT3904L
C14
.047uF
TP16
U1A
74HCT04
C20
.047uF
R15
1.96K
U3D
74HCT08
J5
CON2
R16
3.48K
C29
.047uF
BT1
BR-2/3A
C23
.047uF
TP19
TP15
TP14
TP1
J11
CON3
TP2
TP13
TP22
TP20
TP3
TP12
J10
RJ-45
R3
10K
C34
0.1uF
TP21
TP4
TP11
R1
10K
R5 1.21K
U1F
74HCT04
J3
CON2
R6 1.21K
C38
220pF
U8
SP232ACN
Q1
MMBT3906L
J2
CON2
R23
10K
U1D
74HCT04
C6
100uF+
C30
10uF
+
U1E
74HCT04
C5 .047uF
U7
AT24C02N-10SC-2.7
TP25
Q4
2N7002
R7
150
C35
4.7uF
+
TP5
R18
619
R17
19.6K
C2
.047uF
C31
0.1uF
R20
215
TP24
TP6
+5V
+5V
+5V
+5V
+3.3V
A
D
D
D
D
D
D
D
D
D D
D
D
D
D
D
DD
D
D
DD
+12V
+5V
D
D
D
D
D
D
D
D
+3.3V
D
D
+5V
D
+5V
+5V
+5V
+5V
+5V+5V
+5V
+5V
+5V
+5V
D
+3.3V
D
D
Vbackup
Rec+12V
FE-PWM-ADC
FE-ADC-Clock
FE-Data-In
+12V
+12V
Print-Temp
Rec-GND
filt+12V
ACON
NIBP-15mmHg
NIBP-Safety
NIBP-PWM-ADC
NIBP-Offset-DAC
NIBP-ADC-Clock
NIBP-Overpressure
NIBP-A/D-SelA
SpO2Out
NIBP-Valve-Close
NIBP-Pump-On
NIBP-A/D-SelB
NIBP-A/D-SelC
FE-Pwr-Sync
PIC-Clk
ac-on
+12V
+3.3V
U2-Reset
BackupBattery
AC+12V
Rec+12V
Rec-GND
PIC-Data
PIC-Vprog
Rec-clock
Rec-Data
On/Off-Key
ac-on
+5V
Speaker-Audio
FE-Data-Clock
ADC-Clock
LithMeas
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620002 G
Main Board - Model 200
C
1 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 148
Figure D-2. Atlas model 200 NIBP electronics.
A/D Mux
Zero Adjust
+/-20mmHg range
0mmHG = 0.5V
300mmHG = 4.0V
PWM D/A
76.8KHz
Primary
Transducer
NIBP PWM
A/D Converter
Zero
Offset
Safety
Transducer
Over Pressure
Fault Circuit
7/9/99
Rick Myers
Improvements for ESD
and Fast Transients
Add Nellcor SpO2 cabability.
Modify RLD to reduce V-lead noise.
Improve ESU rejection.
5-39822
See ECN worksheet
LPP
JAC
4/27/99
J. Bello
Z. Psenicnik
5-39934
3/17/99
LPP3/15/99
5-39456
C
3/05/99
5-39118
3/16/99
LPP
3/16/99
F
Mods to U2 clock line,
NVRAM pullup
B
Rick Myers
LPP
LPP
L.Phillips
LPP
620002.dsn
3/05/99
6/23/99LPP
D
Add 330uF bypass for Nellcor 506
board.G 7/18/02
3/26/025-44460
5-44857
LPP
LPP
JK
JK
D201-C
U208-2
U210-7
U204-7
U204-5
U203-3
U203-5
C207-1
U204-3
U204-2
U205-7
U206-6
U206-1
P202-Out-
U206-7
U206-2
U202-3
P202-2
P202-5
Q202-G
Q202-D
U202-5
U208-1
PrimaryPres
P4.25V
SafetyPres
U208-3
P201-Out
P201-6
U204-1
U208-7
U209-Out
U203-6
P202-Out+
U210-2
U210-3
U203-2
Pump+
D20
1-A
Q201-B
Valve-
Valve+
Pump-
P.75V
u207-9
+5V/2
U205-3
U207-3
P201-pwr
3
2
1
84
3
2
1
84
3
2
1
84
23
1
4
3
1
2
5
6
7
84
5
6
7
84
1
3
2
5
6
7
84
1
3
2
1
2
3
6
5
6
7
84
4
5
6
2
3
61 4
7
5
1
2
3
5
6
7
84
IN8
OUT1
GN
D2
GN
D3
GN
D6
GN
D7
3
2
1
84
5
6
7
84
1
2
3
4
5
9
10
8
12
13
11
3
2
1
84
2
1
3
5
6
3
2
1
84
8
1
2
5 67
3
4
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
X3
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
C215
.047uF
U203A
LM393
+
-
U202A
MC34072
+
-
C224
1000pF
C225
.047uF
R233
3.48K
TP214
R221
3.16K
TP206
U208A
MC34072
+
-
R232
10K
Q202MMFT2N02EL
C213
.01uF
R230
10K
R242
10K
C2024.7uF
+
C222
.01uF
Q201
MMBT3904L
TP217
R231
73.2K
U205B
MC34072
+
-
TP225
C223
.01uF
U206B
MC34072
+
-
R235
3.48K
R240
10K
D202
BAV99L
U203B
LM393
+
-
R229
1.96K
R237
464K
R241
10K
D201
MMBD1503A
R243
100K
C220
.01uF
TP228
XFPM-050KPGR-P1
P201
Gain
and
Comp
U202B
MC34072
+
-
TP207
TP210
TP231
U207B
74HCT00
U210
MAX941
+
-
TP211
TP201
C201
.047uF
C212
680pF
TP237
C229
10uF+
TP232
TP240
TP204
C221
.047uF
TP234
C205
.047uF
R214
10K
C209
.047uF
C228
.047uF
TP226
R219
1.96K
C232
.047uF
R246
31.6
C211
.047uF
C216
.047uF
C226
.047uF
R215
100K
U207A
74HCT00
TP221
C204
.047uF
C227
680pF
TP222
R216
19.6K
C208
1uF+ U204B
MC34072
+
-
U201
78L05
R239
1K
R201
576
U204A
MC34072
+
-
TP235
C203
.047uF
R203
3.32K
TP224
C231
.01uF
R205
750
L201
220uH
C210
.047uF
TP212
TP208
R244
38.3K
TP213
C206
.022uF
TP215
R248
1K
R249
1K
TP220
R227
5.11K
U208B
MC34072
+
-
L202
Bead
R236
3.83K
J201
CON5
TP219
R223
21.5K
U207C
74HCT00
R222
1K
R224
1K
R228
1.96K
C230
.047uF
R225
1K
TP236
U207D
74HCT00
R211
1.96K
TP202
U205A
MC34072
+
-
R226
21.5K
R208
1.96K
FPNS-07PGR
P202
-+
C217
.047uF
C218
4.7uF+
C219
.047uF
R204
150
TP209
R218
23.7K
R202
174
R234
3.48K
R212
56.2K
R217
5.62K
C207
1uF+
U206A
MC34072
+
-
R213
237K
R209
1K
Q203
MMDF2N02E
TP216
TP227
R207
464K
TP229
R210
464K
R220
806
TP233
U209
4051
R206
1K
TP203
TP238
TP218
TP230
C214
.047uF
P+12V
P+12V
P+12V
P+12V
P+12V
+5V
+5V
P+12V
P+12V
P+12V
P+12V
P+12V
P+12V
+12V
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
P+12V
P+5V
NIBP-Offset-DAC
NIBP-Pump-On
NIBP-ADC-Clock
P+5V
P+5V
P+5V
P+.75V
NIBP-Safety
P+5V
P+5V
P+5V
NIBP-PWM-ADC
NIBP-Valve-Close
P+12V
5VRef
P+5V
NIBP-Overpressure
NIBP-15mmHg
NIBP-A/D-SelB
P+5V
+12V
+5V
P+.75V
+6V
NIBP-A/D-SelA
NIBP-A/D-SelC
LithMeas
P+5V
Print-Temp
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620002 G
NIBP Electronics
C
2 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 149
Figure D-3. Atlas model 200 power supply
+6V Buck
(5.68V nominal)
On/Off Switch
Page 1
7/9/99
Rick Myers
Improvements for ESD
and Fast Transients
Add Nellcor SpO2 cabability.
Modify RLD to reduce V-lead noise.
Improve ESU rejection.
5-39822
See ECN worksheet
LPP
JAC
4/27/99
J. Bello
Z. Psenicnik
5-39934
3/17/99
LPP3/15/99
5-39456
C
3/05/99
5-39118
3/16/99
LPP
3/16/99
F
Mods to U2 clock line,
NVRAM pullup
B
Rick Myers
LPP
LPP
L.Phillips
LPP
620002.dsn
3/05/99
6/23/99LPP
D
Add 330uF bypass for Nellcor 506
board.G
JK
JK
LPP
LPP
5-44460
5-44857
3/26/02
7/18/02
U3
01
-ou
t
Q3
03
-b
U301-fb
Q303-c
C311-1
Q304-e
U3
01
-osc
U301-5
U301-comp
Q305-g
u304-fb
U2-Clk
PIC-audio
Q305-s
d304-1
d304-2Q3
01
-G
C328-1
On-Off
Q302-B
IN1
OUT3
GN
D2
IN1
OUT3
GN
D2
1
3
2
1
3
2
3
1
2
3
1
2
3
1
2
3
1
2
2
1
3
4
VFB3
ISENSE5
RT/CT7
VREF14
COMP1
OUT10
PW
R-G
ND
8V
cc1
2
GN
D9
Vc
11
VIN8
FDBK7
SHTDN3
TAP6
SENS2
VOUT1
ERR5
ClkIn/Osc1/RB52
TC5/TOCK15
RC37
Vpp/MCLR/RB34
Clkout/Osc2/RB43
RC46
Vd
d1
Vss
14
RC28
RC19
RC010
RB211
RB112
RB013
2
1
3
4
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
R313
10
U302LM2940CT-5.0
TP312
U303LF33CV
C305
.01uF
R309
10K
C316
10uF+
D304
MMBD354LT1
D301
BAV99L
C3234.7uF
+
C320
.047uF
Q306
2N7002
C3244.7uF
+
TP308
C306
330uF+
R310
1.96K
Q304
MMBT3904L
C314
330uF+
C319100uF
+
C307
.047uF
TP315
TP301
TP304
R302
100K
C322
.047uF
R316
100
C302
1uF+
R301
51.1K
R314
100
Q302
MMBT3904L
TP306
TP302
TP313
C304
330uF+
L302
47uH
Q303
MMBT3904L
C303
.01uF
Q305
MTP23P06V
TP309
U301
UC3843AC311
2200pF
TP317
R305
100K
TP316
U304
LP2951CD-3.3
TP305
R318
10K
R307
7.5K
R320 1.62K
R312
1.96K
D303
MBRS340
R304
127K
C321
.047uF
TP26
R311
10K
U305
D620361-MX10000
TP303
C325
.047uF
R303
10K
R306
10K
C315
1uF+
TP320
Q301
MTP23P06V
C313
.047uF
TP27
TP321
R319 19.6K
C317
.047uF
TP310
C310
2200pF
TP318
R308
27.4K
L301
47uH
TP319
C326
.047uF
C301
1000uF
+
TP307
C327
.047uF
C309
.047uF
C328
1uF+
D
D
D
D D
D
D
D
D
D
D
D
ACON
5Vref
+5V
+6V
+3.3V
filt+12V
+12V
Vb
VBackup
BackupBattery
PIC-Clk
Speaker-Audio
ADC-Clock
U2-Reset
PIC-Vprog
Rec-Data
Rec-Clock
On/Off-Key
PIC-Data
AC+12V
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620002 G
Power Supply - DC/DC
C
3 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 150
Figure D-4. Atlas Power isolation /SpO2 interface.
Isolation
Barrier
Isolated SpO2Circuits
Grounded SpO2Circuits
SpO2 ESD
Ground
Nellcor SpO2Connector
Nonin SpO2Connector
7/9/99
Rick Myers
Improvements for ESD
and Fast Transients
Add Nellcor SpO2 cabability.
Modify RLD to reduce V-lead noise.
Improve ESU rejection.
5-39822
See ECN worksheet
LPP
JAC
4/27/99
J. Bello
Z. Psenicnik
5-39934
3/17/99
LPP3/15/99
5-39456
C
3/05/99
5-39118
3/16/99
LPP
3/16/99
F
Mods to U2 clock line,
NVRAM pullup
B
Rick Myers
LPP
LPP
L.Phillips
LPP
620002.dsn
3/05/99
6/23/99LPP
D
Add 330uF bypass for Nellcor 506
board.G 7/18/02
3/26/02 JK
JK
LPP
LPP
5-44460
5-44857
T401-8
U402-1
C409-1
T401-4
T401-1
Q40
1-g
U402-sen
iso401-a
Q40
2-e
Q401-s
U401-1
U401-2
U401-7
sSpO2tx
Q403-e
sSpO2tx
U401-5
U402-e
U402-ref
U402-ct
U402-rt
iso402-a
U403-7
U401-3
C408-2
iso401-b
opto-fb
u411-6
C421-1
f+V
f-V
1
2
23
1
4
1
2
3
4
5
6
7
84
3
2
1
84
IN8
OUT1
GN
D2
GN
D3
GN
D6
GN
D7
+1
+3
+5
+7
+9
+11
+13
+2
+4
+6
+8
+10
+12
+14
1
3
2
VIN8
FDBK7
SHTDN3
TAP6
SENS2
VOUT1
ERR5
IN2
OUT1
IN3
IN6
IN7
GN
D5
1 6
2
5
4
V-1
V+2
VREF16
VIN
15
COMP9
+SENSE4
-SENSE5
SHTDWN10
RT6
CT7
CA12
EA11
CB13
EB14
OSCOUT3
GN
D8
3
1
2
5
8
1
2
3
4
3
1
22
3
8
6
5
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
C423
1000pF
C43110uF
+
TP424
J403
Tab-.187
C432
10uF
+
TP402
R405
215
C409
470pf
C404
.047uF
TP408
R414
6.19K
C411
2200pF
TP406
TP419
TP452
C401
.047uF
TP421
TP413
Q401
MTD3055V
J401
CON4
C406
100uF+
C418
4.7uF
+
TP412
C429
.047uF
C437
330uF+
TP407
C427
.047uF
C415
1uF+
C416
.047uF
R415
100
U401B
MC34072
+
-
R419
215
TP409
TP422
C433
470pf
R417
10K
C407
100uF
+R412
511
R404
316K
U401A
MC34072
+
-
TP401
U407
78L05
D401
MBRS130T3
TP420
TP415
C405
100uF+
R421
10K
TP404
D403
MBRS130T3
C43410uF
+
L401
220uH
L402
220uH
TP468
C403
.047uF
TP405
J402
CON14AP
C402
.047uF
R407
10
R411
5.11K
C420
.047uF
C430
.047uF
R403
1K
D405
BAV99L
U403
LP2951C
TP416
R409
5.11K
R401
10K
C417
680pf
C41910uF
+
TP411
C424
.047uF
R408
100
R418
5.11K
C410
.01uF
TP423
R406
0.2
C413
.047uF
U404
79L05
C435
10uF
+
C414
.047uF
C422
.047uF
R410
10K
TP403
U410
4N25
TP414
U402
LM3524DM
Q402
MMBT3906L
C41210uF
+
C408
.01uf
T401
IsoXfmr
R402
10K
Q403
MMBT3904L
R420
10K
R416
10K
U411
HCNW4503
TP417
C42810uF
+
C421
1uF
+
S
S
S
S
iso+5Vdig
S
S
S
S
S
S
S
EED
ED
ED
S
SS
S
S
S
S S
S
SS
S SS
S
S
SS
S S
S S
S
FE-Pwr-Sync
SpO2Out
+5V
filt+12V
+12V
s+5V
fVcc
fVcc
f+5V
+5V
s+5Vs+5V
fVcc
SpO2-Reset
s+5V
iso+5Vdig
s-5V
iso+5Vdig
s-5V
fVee
fVcc
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620002 G
Isolated Power and SpO2 interface
C
4 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 151
Figure D-5. Atlas model 200 ECG amp.
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
0.1%
Input Buffers
Gain = 9.26
Wilson
Network
Lead Select
Diff Amp
Gain = 1
High Pass (0.05Hz or 0.5Hz)
Low Pass (150Hz)
Gain Stage
Gain = 74
RLD Amp
A/D Inputs
Leads Off
Shield0.1% 0.1%
U506 U508U505U502 U504U501 U507U503
V-Lead Defib Protect,
Diodes internal to U504
protect other inputs.
No Load,
Allows RLD switch
to V-Lead, not used.
ESU filter
7/9/99
Rick Myers
Improvements for ESD
and Fast Transients
Add Nellcor SpO2 cabability.
Modify RLD to reduce V-lead noise.
Improve ESU rejection.
5-39822
See ECN worksheet
LPP
JAC
4/27/99
J. Bello
Z. Psenicnik
5-39934
3/17/99
LPP3/15/99
5-39456
C
3/05/99
5-39118
3/16/99
LPP
3/16/99
F
Mods to U2 clock line,
NVRAM pullup
B
Rick Myers
LPP
LPP
L.Phillips
LPP
620002.dsn
3/05/99
6/23/99LPP
D
Add 330uF bypass for Nellcor 506 board.
G 5-44857
5-44460 LPP
LPP
3/26/02
7/18/02
JK
JK
U501-6
U502-3
aVR
aVLaVF
LL
LL
LL
V+
RA
RA
ecg-hp
U501-2
U503-5
R511-1
R513-1
R515-1
Left-Arm
Left-Leg
V-Lead
Right-Leg
U501-3
Q504-s
Q504-g
Q504-d
U502-2
V-
U508-5
U508-6
C514-2
C503-1
C502-1
C505-1
C539-1
C537-1
U50
8-1
diff-out
mux+
u509-4
mux-
LA
LA
U502-6
U508-2
U503-2
diff-
U502-5
LA
U508-3
diff+
C541-1
C501-1Right-Arm
C504-1
U501-5C538-1
C540-1
Q50
1-S
RL-mux
R509-1
Q501-G
5
6
7
84
3
2
1
84
3
1
23
1
2
3
2
1
84
5
6
7
84
5
6
7
84
4
3
1
25
1
3
2
3
1
2
1
2
3
4
5
6
S13
IN11
S214
IN216
S311
IN39
S46
IN48
V+13
V-4
GND5
D12
D215
D310
D47
3
2
1
84
5
6
7
84
5
6
7
84
3
2
1
84
3
2
1
84
3
1
2
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
X3
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
X3
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
C505
330pF
C520
.047uF
R517
10K
R559
22Meg
TP542
R555
30.1K
C538
220pF
C525
.047uF
C530
.047uF
TP505
C506
100pF
R556
10K
C526
.047uF
U507B
TL072
+
-
TP539
U507A
TL072
+
-
N501
LAMP NEON
C528
.047uF
R544
10K
Q504
2N7002
C532
.047uF
R501
19.6K
TP559
R563
73.2K
C501
330pF
C527
.047uF
R547
10K
TP538
R508
10K
C531
.047uF
R549
110K
C536
.01uF
TP524
TP540
C533
.047uF
R552
1K
TP530
TP518
R560
22Meg
TP509
C529
.047uF
R551
73.2K
R509
22Meg
TP551
N502
LAMP NEON
R526
10K
TP517
TP533
R502
19.6K
TP521
C517
.01uF
C544
1000pF
Q506
2N7002
C504
330pF
R510
10K
U501A
TL072
+
-
C539
220pF
TP562
TP513
R519
10K
C509
100pF
TP511
TP558
R562
73.2K
U502B
TL072
+
-
R520
1.21K
TP543
U508B
AD712
+
-
R511
22Meg
R548
1Meg
N503
LAMP NEON
C515
3.3uF
TP534
TP550
R550
19.6K
R557
22Meg
TP514
R564
73.2K
TP560
R503
19.6K
TP549
TP541
TP515
C542
220pF
U509
LMC7101
-
+
TP503
D505
MMBD1503A
TP531
R512
10K
TP537
R567
NL
TP527
C535
4.7uF
+
TP544
TP512
R561
73.2K
C534
4.7uF+
C523
.047uF
Q502
NL
R521
10K
TP519
C519
.047uF
R545
10K
TP545
R513
22Meg
TP510
TP523
R523
10K
R553
100K
TP536
J501
CON6 TP504
C503
330pF
C508
100pF
C540
220pF
U504
DG202CSE
R565
121K
R524
1.21K
TP508
R515
22MegN504
LAMP NEON
TP535
R518
1.21K
TP520
R514
10K
R504
19.6K
U503A
TL072
+
-
R522
1.21K
C543
.047uF
TP522
TP547
TP557
C510
220pF
TP526
U501B
TL072
+
-
U503B
TL072
+
-
C511
220pF
C537
220pF
N505
LAMP NEON
C512
220pF
C513
220pF
TP507
U508A
AD712
+
-
R516
10K
C507
100pF
U502A
TL072
+
-
R505
19.6K
R530 10K
C541
220pF
C502
330pF
R566
73.2K
R531 10K
TP532
C545
1000pF
C546
NL
R533 10K
R558
22Meg
R527
1K
TP501
R535 10K
C514
0.1uF
TP506
R536 10K
TP525
Q501
NL
R528
51.1K
C516
.047uF
R537 10K
TP552
R525
10K
TP516
R532 10K
TP548
C518
.047uF
R529 10K
R534 10K
C522
.047uF
C521
.047uF
TP529
U505
4051
R546
10K
C524
.047uF
TP528
U506
4051
fVcc
fVcc
fVee
fVcc
fVee
fVee
fVcc
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
S
S
S
S
S
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
EE E
E EE E
E
E
E
E
E EE
E E
E
fVee
fVee
fVee
fVee
fVee
fVcc
fVee
fVee
fVee
fVee
fVee
fVee
fVee
fVcc
fVcc
fVcc
fVcc
fVcc
fVcc
fVcc
fVcc
fVccfVcc
E
Mux-LdS-A
Sw-MonBw
Mux-LdS-B
Mux-LdS-C
RA
LA
LL
V+
VLdsOff
VLdsOff
VLdsOff
VLdsOff
VLdsOff
f+1.24V
f+5V
vRL
Sw-RLD-LL
An-ECG
Sw-RLD-LA
fVcc
fVee
Sw-RLD-RA
Sw-RLD-RL
Sw-RLD-V
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620002 G
ECG Amp
C
5 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 152
U601
PWM
A/DConverter
U602
781uSec
-5V
(U604-10)
Integrator
Input
A/D Mux
U603
+5V
(U604-8)
Serial/Parallel
Control Data
PWM-Out
Comparator
Inputs
PWM-timer
U601
Isolation
Barrier
U603
52uSec
Analog In
U602
U604
7/9/99
Rick Myers
Improvements for ESD
and Fast Transients
Add Nellcor SpO2 cabability.
Modify RLD to reduce V-lead noise.
Improve ESU rejection.
5-39822
See ECN worksheet
LPP
JAC
4/27/99
J. Bello
Z. Psenicnik
5-39934
3/17/99
LPP3/15/99
5-39456
C
3/05/99
5-39118
3/16/99
LPP
3/16/99
F
Mods to U2 clock line,
NVRAM pullup
B
Rick Myers
LPP
LPP
L.Phillips
LPP
620002.dsn
3/05/99
6/23/99LPP
D
Add 330uF bypass for Nellcor 506
board.G
JK
JK
5-44460
5-44857
LPP
LPP
3/26/02
7/18/02
U601-1
U6
03
ou
t
Mux-A/D-B
U6
02
-7
U601-2
U604-4
U6
02
-2
U6
02
-5
iso601-a
Mux-A/D-C
Mux-A/D-A
U601-3
iso602-a
U6
04
-8
U601-7
Q6
01
-e
U604-6
D601-2
U604-10
U605-out
iso604-a
iso603-a
u6
04
-3
U602-3
Sw-DiagBw
U604-2 U613-6U6
04
-1
U612-6
U611-6U6
04
-5
U605-12
U610-6
SW-RL-V
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
13 12
12
2
3
8
6
5
2
3
7
5 6
4 1
8
2
3
8
6
5
3
1
2
2
3
8
6
5
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
5
6
7
84
56
9 8
11 10
2
3
8
6
5
3
2
1
84
3
2
1
84
1
3
2
5
6
7
84
34
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
X3
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
TP615
TP608
TP622
U606
74HCT595
U604F
74HCT04
TP601
C637
1000pF
TP602
TP609
U604A
74HCT04
R623
46.4K
R604
10K
C624
.047uF
R603
46.4K
C641
0.1uF
C634
220pF
C636
100pF
R601
10K
R602
73.2K
TP618
R605
3.48K
R607
464K
C632
.047uF
TP625
R608
1K
TP620
U611
HCNW4503
C635
220pF
U602
LM311
+
-
U613
HCNW4503
TP610
Q601MMBT3904L
U612
HCNW4503
TP604
R611
6.19K
C629
.047uF
TP611
R610
511
U605
74HCT595
R613
6.19K
U607B
LM393
+
-
U604C
74HCT04
C603
680pF
TP617
R621
215
R627
5.11K
U604D
74HCT04
R615
6.19K
TP613
TP603
C6314.7uF
+
R622
46.4K
C609
4.7uF+
U604E
74HCT04
TP612
TP629
U610
HCNW4503
TP606
C601
1000pFTP619
C625
.047uF
R628
10K
U601A
MC34072
+
-
R626
10K
TP616
C626
.047uF
C627
.047uF
TP626
TP614
R625
10K
R617
2.15K
U607A
LM393
+
-
C628
0.1uF
TP605
C642
0.1uF
D601
MMBD1503A
TP627
C623
.047uF
C633
100pF
TP623
C621
0.1uF
C614
4.7uF
+
TP630
C622
.047uF
TP628
U601B
MC34072
+
-
U604B
74HCT04
TP624
R624
5.11K
R619
619
TP621
U603
4051
TP607
R606
3.48K
R620
619
E
E
f+5V
f+5V
f+5V
ED
+5V
ED
E
E
fVee
E E
fVcc
ED
E
f+5V
fVcc
E
E
+5V
f+5V
E
E
E
ED
E
E
fVcc
iso+5Vdig
fVcc
E
ED
E
fVee
fVee
fVcc
fVcc
fVcc
iso+5Vdig
iso+5Vdig
ED
iso+5Vdig
iso+5Vdig
EDiso+5Vdig
ED
ED
ED
fVcc
fVee
E E
fVee
E E
E
fVee
ED
ED
f+5V
f+5V
ED
ED
f+1.24V
An-ECG
LL
Mux-LdS-B
LA
Sw-RLD-RA
FE-PWM-ADC
FE-ADC-Clock
Mux-LdS-A
RA
V+
Mux-LdS-C
Sw-RLD-LA
vRL
fVcc
iso+5Vdig
f+1.24V
Sw-MonBw
FE-Data-In
FE-Data-Clock
+5V
+5V
fVee
f+5V
f+1.24V
Sw-RLD-LL
SpO2-Reset
Sw-RLD-RL
Sw-RLD-V
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620002 F
ECG A/D and Interface
C
6 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 153
Figure D-6. Atlas ECG A/D interface
CPU PCA SW Debug Port
(aka BDM Connector)
Test Points
1 - Visual History Buffer Flush Status ('823 output)
2 - Reset Output ('823 input)
3 - Ground
4 - BDM Clock ('823 input)
5 - Ground
6 - Visual History Buffer Flush Status ('823 output)
7 - Reset Input ('823 Output)
8 - BDM Data Input ('823 Input)
9 - Vcc
10 - BDM Data Output ('823 Output)
Main PCA Connectors
Jim Belesiu
Jim Belesiu
Mar 5, 1999
Mar 5, 1999
620005.dsn
5-39173 JAC 3/18/99 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/19/99
3/19/99
3/19/99
BComponent change forfrequency modulation
5-39353 JJC 4/15/99 ZIP
Change Reset IC U3,
No Load C40C
Upgrade to larger SDRAMD
5-39830 LPP LPP6/24/99
5-44759 LPP 6/20/02 JK
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
1
1
1 1
1
1
1
1
1
1
1
1
1
1
1
1
1
11
33
55
77
99
1111
1313
1515
1717
1919
2121
2323
2525
2727
2929
3131
3333
3535
3737
3939
4141
4343
4545
4747
4949
5151
5353
5555
5757
5959
22
44
66
88
1010
1212
1414
1616
1818
2020
2222
2424
2626
2828
3030
3232
3434
3636
3838
4040
4242
4444
4646
4848
5050
5252
5454
5656
5858
6060
1
1
1
1
1 2
3 4
5 6
7 8
9 10
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
TP75
TP77
TP60 TP61
TP78
TP62
TP59
TP64
TP63
TP70
TP65
TP69
TP66
TP76
TP58
TP68
TP71
JP8
HEADER 30x2
TP72
TP67
TP73
TP74
JP5
HEADER 5X2
VDDH
DSDO
ADC-Clock
SPI-data-in
TA_n
NIBP-15mmHg
PC6
CLKOUT
SpO2-Tx
Main-Supply-On
FE-Data
DSDI
SCD
Video-Horizontal-Sync
SPI-clock
NIBP-PWM-ADC
SpO2-Rx
Spare-1
On-Standby-Key
Video-Clock-3
EKG-PWM-ADC
RS423-CTS
SPI-data-out
PA4
ETCO2-Rx
NIBP2-PW-ADC
Vbackup
NIBP-Valve
Spare-3
RD/WR_n
PA14
SPIMISO
Nurse-Call
Key-Latch
Main-Power-Sync
Spare-2
NIBP-Overpressure
SCL
Batt-ID
ETCO2-Tx
PB16
PC10
VFLS1
+3.3V_unfiltered
Recorder-Data
PC13
HRESET_n
Video-Vertical-Sync
Recorder-Data-Latch
Burst_n
TS_n
AC-On
RS423-Tx
Recorder-Strobe
PA7
SRESET_nVFLS0
HRESET
Rec-Paper-Out
NIBP-Data
PC12
PA6
SPISEL_n
LED-Latch
NIBP-Offset-DAC
Video-Data
SPIMOSI
DSCK
+3.3V_unfiltered
Speaker-Audio
Recorder-Motor-Step
FE-Clock
PA5
PA15
NIBP-Fault
RS423-Rx
Recorder-Clock
SPICLK
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620005 D
Atlas CPU Subsystem
C
1 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 154
Figure D-7. Atlas CPU subsystem.
Audio DAC Resistors
Jim Belesiu
Jim Belesiu
Mar 5, 1999
Mar 5, 1999
620005.dsn
3/18/99JAC5-39173
3/19/99
3/19/99
3/19/99
L. Phillips
Z. Psenicnik
J. Bello
LPP
B ZIP4/15/99JJC5-39353Component change forfrequency modulation
Change Reset IC U3,
No Load C40C
D Upgrade to larger SDRAM
5-39830 LPP 6/24/99 LPP
5-44759 LPP 6/20/02 JK
A26
A27
A28
A29
GPL1
CS_n2
VIDEO1
D6
VIDEO6
D5
VIDEO5
VIDEO4
VIDEO2
D4
VIDEO3
VIDEO7
D7
D3
VIDEO0
D2
D1
D0
S2
S4
S7
S6
S5
S0
S3
S1
S2
S7
S4
S1
S3
S0
S6
S5
IRQ_n1
IRQ_n2
SPIMOSI
SPICLK
CONFIG_DONE
A25
NSTATUS
1
12
GN
D-5
5
GCLK-1212
nC
E4
DC
LK89
CO
NFI
G_D
ON
E72
GCLK-1313
P1515
GN
D-2
020
VC
C-2
121
P1616
P1717
P1414
TMS-1818
P2424
P2525
P2626
P2727
P2828
P5050
GN
D-8
787
VC
C-6
6
P2929
P3030
P3131
P3232
GN
D-3
737
MSE
L22
VC
C-7
171
P33
P77
P1919
P5252
P5555
P5656
nC
ON
FIG
36
VC
C-5
454
GN
D-5
353
P6868
P4141
P4040
P3535
P3434
GN
D-7
070
P3333
nST
ATU
S39
VC
C-8
888
TDO-5151
TDI-1010
DA
TA86
CLKUSR-6969
P11
P22
VC
C-3
838
TCK-2323
P88
P99
P1111
nCEO-4949
P4242
P4343
P4444
P4545
P4646
P4747
P4848
P100100
P9999
P9898
P9797
P9696
P9595
P9494
P9393
P9292
P9090
P8484
P8282
P8080
P7979
P7676
P7575
P7474
RDYnBSY-6767
P6666
P6565
GCLK-6363
GCLK-6262
P6161
P6060
P5959
P5858
P5757
DEV_CLRn-9191
INIT_DONE-6464
DEV_OE-8585
nRS-8383
nWS-8181
nCS-7777
Cs-7878
P7373
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
R69 12.4K
R125
1.58K
R68 24.9K
R70 6.19K
R71 3.09K
R73 787
TP80
C121
330pF
U7
EPF6016A
R72 1.58K
R126
33
R66 100K
R67 49.9K
VDDH
SDACK2_n
DREQ2_n
SDACK1_n
DREQ1_n
A[6:31] GPL[0:7] CS_n[0:7]
VIDEO[0:7]
D[0:31]
VSYNC
HSYNC
Speaker-Audio
IRQ_n[0:7]
Blank
SPIMOSI
SPISEL_n
Video-Data-x
VSYNC-x
HSYNC-x
NIBP-Data-x
Recorder-Strobe-x
Recorder-Data-Latch-x
Recorder-Clock-x
Recorder-Data-x
PC6
Recorder-Motor-Step-x
NIBP-Overpressure-x
NIBP-15mmHg-x
TIN1
FE-Data-x
TIN2
ADC-Clock-x
FE-Clock-x
76.8KHz
TIN3
NIBP-Fault-x
SPI-data-in-x
SPI-clock-x
SPI-data-out-x
LED-Latch-xKey-Latch-x
NIBP-Offset-DAC-x
PA14
PC10
PB16
PA7
PA6
PC11
PC12
Video-Clock-3
PA5
SPIMISO
RD/WR_n
Video-Clock-25
Field
SPICLK
CLKOUT
PA15
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620005 D
FPGA
C
2 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 155
Figure D-8. Atlas FPGA.
MODCK (0,0) Selects 32KHz as main oscillator
RSTCONF = 0 allows '823 to sample data bus during HRESET
PWM Input Timer Signals
Jim Belesiu
Jim Belesiu
Mar 5, 1999
Mar 5, 1999
620005.dsn
5-39173 JAC 3/18/99 LPP
3/19/99
3/19/99
3/19/99
L. Phillips
Z. Psenicnik
J. Bello
B
frequency modulationComponent change for 5-39353 JJC 4/15/99 ZIP
Change Reset IC U3,
No Load C40C
Upgrade to larger SDRAMD
5-39830 LPP 6/24/99 LPP
5-44759 LPP 6/20/02 JK
IRQ_n0
IRQ_n1
IRQ_n2
IRQ_n3
IRQ_n4
IRQ_n5
IRQ_n6
IRQ_n7
IP_B6
IP_B7
IP_B3
IP_B2
IP_B4
IP_B5
GPL4
GPL5
IRQ_n0
12
5
1
2
3
4
6
7
8
9
10
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
1
2
3
4 5
6
7
81
2
12
12
12
12
1
2
3
4 5
6
7
8
12
12
12
5
1
2
3
4
6
7
8
9
10
12
5
1
2
3
4
6
7
8
9
10
12
1
2
3
4 5
6
7
8
5
1
2
3
4
6
7
8
9
10
1
2
3
4 5
6
7
8
12
5
1
2
3
4
6
7
8
9
10
12
5
1
2
3
4
6
7
8
9
10
12
1
2
3
4 5
6
7
8
12
1
2
3
4 5
6
7
8
12
1
2
3
4 5
6
7
8
12
12
12
5
1
2
3
4
6
7
8
9
10
1
2
3
4 5
6
7
8
1
2
3
4 5
6
7
8
1
2
3
4 5
6
7
8
12
12
12
12
12
12
1
2
3
4 5
6
7
8
12
12
12
12
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
C70330pF
R86
10K
C
R151
215
C124330pF
C72330pF
C71330pF
C123330pF
C78330pF
R1521.58K
R108
1.58K
C79330pF
C125330pF
C81330pF
R105
1.58K
C80330pF
C89330pF
R104
NL
C86330pF
C87330pF
R107
NL
C88330pF
R133NL
C90330pF
R1293.09K
C93330pF
C91330pF
R88
100
C92330pF
C94330pF
C97330pF
R1313.09K
C95330pF
C96330pF
R82
100
R1321.58K
C105330pF
C12222pF
C103330pF
R83
10K
C
C102330pF
R76
10K
C
C104330pF
R87
100
R103
10K
C
R85
100
C66330pF
R16
10K
C
C67330pF
R91 10K
C
C68330pF
R77
100
C69330pF
R1276.19K
R80
100
C76330pF
R74
100
C77330pF
C75330pF
C74330pF
R49
10K
C
R1303.09K
R90
100
R1286.19K
R78
100
R81
100
C57330pF
C56330pF
C55330pF
C54330pF
C63330pF
C64330pF
R1341.58K
R120
NL
R116
100
C65330pF
C62330pF
C126330pF
C73330pF
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
SPI-data-out-xSPI-data-out
Video-Vertical-Sync
Video-Horizontal-Sync HSYNC-x
VSYNC-x
DSDI
SCL
SCD
Recorder-Clock-x
Recorder-Strobe-x
Recorder-Data-Latch-x
Recorder-Data-x
Recorder-Clock
Recorder-Data
Recorder-Data-Latch
Recorder-Strobe
VFLS1
VFLS0
WAIT_B_n
IP_B[2:7]
I2CSCLSCL
SMRXD2
SMTXD2SpO2-Tx
SpO2-Rx
ETCO2-Tx
ETCO2-Rx SMRXD1
SMTXD1
RXD2
TXD2
RS423-Rx
RS423-Tx
Nurse-Call
PC9
Key-Latch-xKey-Latch
SCD I2CSDA
NIBP-Offset-DAC
Rec-Paper-Out
RS423-Rx
SpO2-Rx
FE-Clock
FE-Data
ADC-Clock
FE-Data-x
FE-Clock-x
ADC-Clock-x
SPI-clock-xSPI-clock
LED-Latch-x
SPI-data-in SPI-data-in-x
Video-Data-xVideo-Data
SPI-data-in
NIBP-Data-xNIBP-Data
Batt-ID
NIBP-Fault-xNIBP-Fault
NIBP-15mmHg
NIBP-Overpressure
ETCO2-Rx
AC-On
PA6NIBP-Valve
NIBP-Offset-DAC-x
PB18
LED-Latch
PC5
PC7
Spare-1
Spare-2
Batt-ID
EKG-PWM-ADC
MODCK1
MODCK2
PB17
PC8
PB19
Rec-Paper-Out
RS423-CTS
AC-On
TIN3NIBP2-PW-ADC
Spare-3
Burst_n
BG_n
TS_n
SPKROUT
NIBP-Fault
FRZ
PC11
DREQ1_n
GPL[0:7]
NIBP2-PW-ADC RS423-CTS
TMS
PB16
PC13
SRESET_n
PA4
PA7
PA15
PA5
On-Standby-Key
DREQ2_n
Spare-1
Spare-3
PC10
NIBP-PWM-ADC
PC12
76.8KHz
TEXP
On-Standby-Key
Main-Power-Sync
Main-Supply-On
EKG-PWM-ADC TIN1
TIN2NIBP-PWM-ADC
NIBP-15mmHg-x
Recorder-Motor-Step Recorder-Motor-Step-x
NIBP-Overpressure-xNIBP-Overpressure
NIBP-15mmHg
PC4
TEA_n
TA_n
BB_n
BR_n
TRST_n
ALE_B
RSTCONF_n
BI_n
DSCK
IRQ_n[0:7]
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620005 D
I/O Filters
C
3 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 156
Figure D-9. Atlas 200/210/220 I/O filters.
AMD N/C: 9, 10, 13, 14
AMD RY/BY#: 15
----------------
MICRON N/C: 9, 10, 15
MICRON Vpp: 13
Boot Configuration Latch
Active during power-on
Boot Configuration Pull-Up: 0 1 0 0 1 0 0 1 1 1 1 0 0 0 0 0
(see page 4-10)
0: internal arbitration
1: MSR(ip) = 0, interrupt prefix is 0x0000
0: reserved
0: memory controller is active after reset
1,0: 16-bit boot device
0: reserved
1,1: IMMR base is 0xfff0-0000
1,1: DBGC mode
0,0: DBPC mode
0,0: External bus division factor
Jim Belesiu
Jim Belesiu
Mar 5, 1999
Mar 5, 1999
620005.dsn
JAC5-39173 3/18/99
L. Phillips
Z. Psenicnik
J. Bello
3/19/99
3/19/99
3/19/99
LPP
B ZIP4/15/99JJC5-39353Component change forfrequency modulation
Change Reset IC U3,
No Load C40C
Upgrade to larger SDRAMD
5-39830 LPP 6/24/99 LPP
5-44759 LPP 6/20/02 JK
dx7
dx9
dx1
dx8
dx11
dx10
dx12
dx4
D8
D14
D15
D14
D0
D2
D12
D1 D1
D13
D0
D6
D9
D10
D5
D12
D9
D4
D15
D4
D11
BS_AB0
D7
D7
D6
D5
BS_AB1
D9
D3
D3
D2
D8
D8
D10
D4
D13
D1
D7
D10
D11
GPL1
GPL1
GPL2
GPL3
CS_n0
CS_n1
U5-36
U5-35
A21
A23
A17
A21
A30
A16
A9
A20
A24
A11
A18
A27
A13
A19
A24
A10
A25
A23
A12
A22
A26
A30
A27
A22
A15
A29
A28
A25
A26
A29
A14
A28
U5-25
GPL0
D029
D131
D233
D335
D438
D540
D642
D744
D830
D932
D1034
D1136
D1239
D1341
D1443
D1545
A025
A124
A223
A322
A421
A520
A619
A718
A88
A97
A106
A115
A124
A133
A142
A151
A1648
A1717
NC
313
Vcc
37
Byte#47
NC19
NC414
Gn
d-a
46
Gn
d-b
27
OE#28
CE#26
WE#11
RESET#12
NC210
RY/BY#15
A1816
1
1
1
DQ02
DQ14
DQ25
DQ37
DQ48
DQ510
DQ611
DQ713
DQ842
DQ944
DQ1045
DQ1147
DQ1248
DQ1350
DQ1451
DQ1553
A023
A124
A225
A326
A429
A530
A631
A732
A833
A934
A1022
Vcc
Q3
43V
ccQ
29
DQML15
NC/A1236
DQMH39
Vss
128
Vss
Q4
52
NC240
CS#19
RAS#18
WE#16
CAS#17
Vss
Q1
6
Vss
Q2
12
Vss
Q3
46
CKE37
CLK38
Vss
241
Vcc
11
Vcc
214
Vcc
Q4
49
Vcc
Q1
3
BA020
BA121
A1135
Vss
354
Vcc
327
12
1A12
1A24
1A36
1A48
2A111
2A213
2A315
2A417
1G1
2G19
1Y118
1Y216
1Y314
1Y412
2Y19
2Y27
2Y35
2Y43
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
U6
FLASH-512Kx16
TP54
R155
6.19K
TP55
TP53U5
SDRAM-4Mx16
R57
100K
T1
R153
6.19K
R154
6.19K
U4
74AHC244
T2
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
VDDH
CLKOUT
BS_AB[0:3]
D[0:31]
GPL[0:7]
CS_n[0:7]
SRESET_n
HRESET_n
A[6:31]
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620005 D
Flash, SDRAM and HRESET Config Word
C
4 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 157
Figure D-10. Flash, SDRAM HRESET config word.
Attach GND and
VSSSYN at a
single point.
Place VSSSYN
on a split
plane beneath
the MPC823 PLL
section
Jim Belesiu
Jim Belesiu
Mar 5, 1999
Mar 5, 1999
620005.dsn
3/18/99JAC5-39173 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/19/99
3/19/99
3/19/99
B
frequency modulationComponent change for 5-39353 JJC 4/15/99 ZIP
Change Reset IC U3,
No Load C40C
Upgrade to larger SDRAMD
LPP5-39830 6/24/99 LPP
5-44759 LPP 6/20/02 JK
BG
_n
BB
_n
IRQ
_n2
TEA
_n
A27
BS_AB[0:3]
IP_B2
IRQ
_n7
A22
A14
A[6:31]
IRQ_n[0:7]
IP_B4
TA_n
A30
A18
IP_B5
BR_
n
A24
A21
A20
A19
A17
A8
IP_B6
BS_
AB
0
IRQ
_n4
SPK
ROU
T
A12
A11
IRQ
_n1
IRQ
_n5
CS_
n7
GPL
5
GPL
3
IRQ
_n6
CS_
n6
CS_
n5
A25
IP_B3
BS_
AB
2
TSIZ
1
CS_
n4
A6
GPL[0:7]
GPL
6
GPL
4
A26
GPL
7
TSIZ
0
CS_
n0
A31
A28
A23
A9
GPL
2
BI_
n
A16
A15
A10
CS_n[0:7]
IP_B7
FRZ
IRQ
_n3
CS_
n1
A7
TSIZ[0:1]
BS_
AB
3
IRQ
_n0
CS_
n3
A29
IP_B[2:7]G
PL1
GPL
0
BS_
AB
1
CS_
n2
TS_n
A13
VID
EO0
VID
EO1
VID
EO2
VID
EO3
VID
EO4
VID
EO5
VID
EO6
VID
EO7
GN
D
VSS
SYN
D26
D28
D14
D15
D1
D0
D19
D24
D18
D20
D10
D7
D16
D6
D2
D23
D21
D25
D12
D31
D27
D3
D8
D30
D22
D4
D5
D13
D9
D11
D17
D29
D[0:31]A
6M
13
A7
N15
A8
N16
A9
M15
A10
L13
A11
M16
A12
M14
A13
L14
A14
L15
A15
L16
A16
K14
A17
K13
A18
G13
A19
K15
A20
J15
A21
J14
A22
G14
A23
H15
A24
H13
A25
H14
A26
F14
A27
K16
A28
G16
A29
H16
A30
G15
A31
F16
D0
M1
D1
L1
D2
J2
D3
J1
D4
L2
D5
H1
D6
F1
D7
E1
D8
M2
D9
K2
D10
K3
D11
K1
D12
M4
D13
M3
D14
J3
D15
J4
D16
H2
D17
K4
D18
H3
D19
G2
D20
G3
D21
F2
D22
H4
D23
L4
D24
F3
D25
G4
D26
E4
D27
L3
D28
F4
D29
E2
D30
D2
D31
E3
CS0
_nD
12
CS1
_nA
14
CS2
_nB
14
CS3
_nA
15
CS4
_nB
16
CS5
_nD
13
CS6
_n/
CE1
_B_n
C14
CS7
_n/
CE2
_B_n
B15
VDDH1E5
VDDH2E6
VDDH3E7
VDDH4E8
VDDH5E9
VDDH6E10
VDDH7E11
VDDH8E12
VDDH9F5
VDDH10F12
VDDH11G5
VDDH12G12
VDDH13H5
VDDH14H12
VDDH17J5
VDDH18J12
VDDH19K5
VDDH20K12
VDDH21L5
VDDH22L12
VDDH23M5
VDDH24M6
VDDH25M7
VDDH26M8
VDDH27M9
VDDH28M10
VDDL1A7
VDDL2G1
VDDL3J16
VDDL4T7
GN
D1
F6
GN
D2
F7
GN
D3
F8
GN
D4
F9
GN
D5
F10
GN
D6
F11
GN
D7
G6
GN
D8
G7
GN
D9
G8
GN
D10
G9
GN
D11
G10
GN
D12
G11
GN
D13
H6
GN
D14
H7
GN
D15
H8
GN
D16
H9
GN
D17
H10
GN
D18
H11
GN
D25
J6
GN
D26
J7
GN
D27
J8
GN
D28
J9
GN
D29
J10
GN
D30
J11
GN
D31
K6
GN
D32
K7
GN
D33
K8
GN
D34
K9
GN
D35
K10
GN
D36
K11
VD
DSY
NB
1
KA
PWR
A3
VSS
SYN
A1
VSS
SYN
1A
2
VDDH29M11
VDDH30M12
GN
D37
L6
GN
D38
L7
GN
D39
L8
GN
D40
L9
GN
D41
L10
GN
D42
L11
PORE
SET_
nB
3
RSTC
ON
F_n
C5
HRE
SET_
nB
5
SRES
ET_n
B4
XTA
LA
4
EXTA
LA
5
XFC
B2
CLK
OU
TD
1
EXTC
LKA
6
TEX
PD
5
VD
0/
LD1
/PD
8T1
VD
1/
LD2
/PD
9P4
VD
2/
LD3
/PD
10T2
VD
3/
LD4
/PD
11N
5V
D4
/LD
5/
PD12
R3V
D5
/LD
6/
PD13
P5V
D6
/LD
7/
PD14
T3V
D7
/LD
8/
PD15
R4FI
ELD
/LD
0/
PD7
R2B
LAN
K/
LOE
/LC
D_A
C/
PD6
R1V
SYN
C/
FRA
ME
/PD
5P2
HSY
NC
/LO
AD
/PD
4P3
CLK
-SH
IFT
/PD
3N
4
TSIZ
0/
REG
_nF1
5
TSIZ
1E1
5
RD/
WR_
nC
13
Bu
rst_
nB
10
BD
IP_n
/G
PL_B
5_n
A13
TS_n
D10
TA_n
A12
TEA
_nC
11
BI_
nB
12
RSV
_n/
IRQ
2_n
D9
KR_
n/
IRQ
4_n
/RE
TRY
/SP
KRO
UT
B7
DP0
/IR
Q3_
nC
3
DP1
/IR
Q4_
nD
4
DP2
/IR
Q5_
nD
3
DP3
/IR
Q6_
nC
2
FRZ
/IR
Q6_
nA
10
IRQ
7_n
N3
IRQ
1_n
N2
IRQ
0_n
N1
BR_
nB
11
BB
_nA
11B
G_n
C10
WE0
_n/
BS_
AB
0_n
/IO
RD_n
D16
WE1
_n/
BS_
AB
1_n
/IO
WR_
nE1
6
WE2
_n/
BS_
AB
2_n
/PC
OE_
nD
15
WE3
_n/
BS_
AB
3_n
/PC
WE_
nF1
3
GPL
_A0_
n/
GPL
_B0_
nE1
3
GPL
_A1_
n/
GPL
_B1_
n/
OE_
nC
16
GPL
_A2_
n/
GPL
_B2_
n/
CS2
_nC
15
GPL
_A3_
n/
GPL
_B3_
n/
CS3
_nD
14
UPW
AIT
A/
GPL
_A4_
n/
AS_
nD
11
UPW
AIT
B/
GPL
_B4_
nB
13
GPL
_A5_
nC
12
TCK
/D
SCK
T12
TMS
R12
TDI/
DSD
IR1
1
TDO
/D
SDO
N12
TRST
_nP1
1
WA
IT_B
_nC
4
ALE
_B/
DSC
K/
AT1
B8
IP_B
0/
IWP0
/V
FLS0
A8
IP_B
1/
IWP1
/V
FLS1
C8
IP_B
2/
IOIS
16_B
_n/
AT2
D7
IP_B
3/
IWP2
/V
F2A
9
IP_B
4/
LWP0
/V
F0B
9
IP_B
5/
LWP1
/V
F1C
9
IP_B
6/
DSD
I/A
T0C
7
IP_B
7/
PTR_
n/
AT3
D8
OP2
/M
OD
CK
1/
STS_
nD
6
OP3
/M
OD
CK
2/
DSD
OB
6
PA15 / USBRXDP16
PA14 / USBOE_nR15
PA13 / RXD2R14
PA12 / TXD2R13
PA9 / L1TXDA / SMRXD2N10
PA8 / L1RXDA / SMTXD2T9
PA7 / CLK1 / TIN1 / L1RCLKA / BRGO1T8
PA6 / CLK2 / TOUT1_n / TIN3P8
PA5 / CLK3 / TIN2 / L1TCLKA / BRGO2T6
PA4 / CLK4 / TOUT2_n / TIN4R6
PB31 / SPISEL_n / LCD_AN14
PB30 / SPICLKP15
PB29 / SPIMOSIP14
PB28 / SPIMISOT15
PB27 / I2CSDA / BRGO1T14
PB26 / I2CSCL / BRGO2P12
PB25 / SMTXD1N11
PB24 / SMRXD1T11
PB23 / SMSYN1_n / SDACK1_nT10
PB22 / SMSYN2_n / SDACK2_nR9
PB19 / L1ST1 / LCD_BR7
PB18 / RTS2_n / L1ST2P7
PB17 / L1ST3 / LCD_CN7
PB16 / L1RQA / L1ST4R5
PC15 / DREQ1_n / L1ST5R16
PC14 / DREQ2_n / RTS2_n / L1ST6T16
PC13 / L1ST7P13
PC12 / L1RQA / L1ST8T13
PC11 / USBRXPR10
PC10 / TGATE1_n / USBRXNP9
PC9 / CTS2_nR8
PC8 / CD2_n / TGATE1_nN8
PC7 / USBTXPT5
PC6 / USBTXNN6
PC5 / L1TSYNCA / SDACK1_nP6
PC4 / L1RSYNCAT4
NC1A16
NC2C1
NC3C6
NC4E14
NC5J13
NC
6N
9
NC
7N
13
NC
8P1
NC
9P1
0
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
U1
MPC823ZC
MPC823(the monster)
VDDH
VDDL
KAPWR VDDSYN
VIDEO[0:7]
A[6:31]
TSIZ[0:1]
TEXP
PORESET_n
EXTCLK
Field
HSYNC
SPISEL_n
SPIMOSI
SPICLK
Video-Clock-3
XTAL
MODCK2
XFC
MODCK1EXTAL
HRESET_n
VSYNC
SRESET_n
CLKOUT
Blank
SPIMISO
RD/WR_n
I2CSCL
I2CSDA
CS_n[0:7]
IRQ_n[0:7]
BS_AB[0:3]
SMRXD2
PA7
SMTXD2
PA6
PA4
PA5
PA15
PA14
TXD2
RXD2
PB19
PB16
PB18
PB17
SDACK2_n
SDACK1_n
SMTXD1
SMRXD1
DREQ1_n
PC13
DREQ2_n
PC12
PC10
PC11
PC7
PC5
PC8
PC9
PC6
DSDO
TMS
TRST_n
VFLS0
VFLS1
DSCK
RSTCONF_n
DSDI
D[0:31]
GPL[0:7]
WAIT_B_n
ALE_B
IP_B[2:7]
Burst_n
TS_n
TA_n
TEA_n
BI_n
BR_n
BG_n
BB_n
SPKROUT
FRZ
PC4
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620005 D
PowerPC MPC823 CPU
C
5 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 158
Figure D-11. Power PC MP C823 CPU.
Supply RF/EMI
Filters and Reset
Circuits
FPGA decoupling caps
MPC823 decoupling caps
System Clock
1536*830 < XFC < 1536*1470 pf Value selected for the final mulitplication ratio
RF Suppression
to CPU
System
Place decoupling capacitors next to CPU VDDSYN pin B1 and VSSSYN pin A1 and A2
Split ground plane under these components
'244
decoupling cap
DRAM decoupling caps
Place these components
as close to the
processor as possible
Use separate PPL VDDSYN power plane from 3.3V plain
to CPU PLL pins A1
and A2
FPGA Clock
FLASH decoupling caps
to CPU PLL
pin B1
to CPU 32KHz
Clock
PLL Filter
Capacitor
MPC823 PLL
Supply
RF Suppression
Oscillator
decoupling
cap
Jim Belesiu
Jim Belesiu
Mar 5, 1999
Mar 5, 1999
620005.dsn
5-39173 JAC 3/18/99 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/19/99
3/19/99
3/19/99
FM Section for spreading RF
emissions. R2 selects the
deviation.
Load C107 w/1.5uF and unload C1 for non-FM clocking
From FPGA
B ZIP4/15/99JJC5-39353frequency modulationComponent change for
Change Reset IC U3,
No Load C40C
Upgrade to larger SDRAMD
LPP5-39830 6/24/99 LPP
5-44759 LPP 6/20/02 JK
xtalp
VCLK
VSSSYN
Q1-Base
PORESET-Input
XFCX
12
12
121
2
12
12
12
1 2
12
12
12
12
12
1 2 12
12
1 2
12
Reset_n1
Input2
Gn
d3
3
1
2
12
12
12
12
121
2
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
1 2
12
Reset_n1
Input2
Gn
d3
OE1
GND2
OUT3
VDD4
12
12
12
12
12
12
12
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
C1116.8uF
C1106.8uF
C28100nF
C130
NL
C29100nF
C10822pF
C43100nF
Y1
32768Hz
C44100nF
C115
330pF
R118
NL
R513.9M
R119
NL
R50 200K
C41100nF
C42100nF
C39
100nF
L1
Ferrite-120
C106100nF
R123
100K
C16
6.8uF
L3
Ferrite-120
R122
12.4K
C18
6.8uF
U3
2.0V
Q1
NL
R94
NL
R121
NL
C376.8uF
C116
330pF
C120
6.8uF
C38
6.8uF
R52
33
C114
330pF
C13
100nF
C15
100nF
C6100nF
C14
6.8uF
C118
330pF
C7100nF
C10922pF
R2
1K
R117
200K
C17
100nF
C119
330pF
C11.5uF
R124
1.58K
C36100nF
C128100nF
C40100nF
R1
100
C4100nF
C5100nF
C2
100nF
C12
6.8uF
C21100nF
C22100nF
C107NL
L2 Ferrite-120
C19100nF
U2
3.0V
G1
SG-636PCE-25.175M
C20100nF
C30100nF
C1136.8uF
C31100nF
C117
330pF
C1126.8uF
C32100nF
VDDH
VDDSYN
VDDH
VDDL
VDDH
VDDH
KAPWR
VDDH
VDDH
VDDH
VDDH
VDDH
+3.3V_unfiltered
HRESET
HRESET_n
Video-Clock-25
Vbackup
EXTAL
PORESET_n
EXTCLK
XFC
+3.3V_unfiltered
XTAL
PA14
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620005 D
Power Distribution, Clocks and Reset
C
6 6Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 159
Figure D-12. Power distribution.
On/Standby
Place capacitors
by connectorAC On LEDs
Trend
Lead Select
Break-Away PCB Section
Flag Pole Area
Place one tantalum cap neareach seven segment LEDgroup
Place one
ceramic cap
near each IC
Silence Button
Break-Away PCBSection
Silence
Switch
7
1
9
Pull-up Resistor Network Detail
5
6
4
8
10
2 3
Silence LED
Jim Belesiu
Jim Belesiu
3/15/99
3/15/99
3/23/99 LPPJAC5-39251
L. Phillips
Z. Psenicnik
J. Bello
3/24/99
3/24/99
3/24/99
B No Load D16
D13 to Low Profile, R51 to 316C
5-39485 4/28/99LPP LPP
7/23/99LPP5-39994
On/Off-sw
Clock1
Lead-Select
Trend
ACON-LED
u13-out
u19-out
Print-sw
Lead-Select-sw
FP-Common
ACLED-2
ACLED-1
AC-On-x
Sil-Sw-a
D10-C
D10-Vcc
Silence-Switch
On-Led
Silence-LED
Sil-Sw-b
Key-Clock
LED-Data
LED-Latch-2
u26-18
Key-Latch-b
LED-Latch-n
Key-data-b
Key-Data
LED-Data-b
Clock3
u26-9
u26-7
LED-Latch-1
Key-Latch-n
Clock2
LED_SPO2_enable
LED_TP_enable
LED-Enable
LED_NIBP_enable
Trend-sw
1
2
3
4
5
LED_NIBP_Clock
LED_NIBP_Latch
LED_NIBP_Data_In
LED_NIBP_Data_Out
Silence-LEDLED_NIBP_Enable
1
2
3
4
5
13 12
23418 5 6 7
LED_SpO2_Clock
LED_SpO2_Latch
LED_SpO2_Data_In
LED_SpO2_Enable
1A12
1A24
1A36
1A48
2A111
2A213
2A315
2A417
1G1
2G19
1Y118
1Y216
1Y314
1Y412
2Y19
2Y27
2Y35
2Y43
Key-Clock-b
Key-Latch-b
Key-Data-b
On/Off-sw
Silence-Switch
Trend
Lead-Select
1 2
3 4
5 6
7 8
9 10
11 12
13 14
LED_TP_Data_In
LED_TP_Clock
LED_TP_Latch
LED_TP_Data_Out
LED_TP_Enable
1 2
1 2
1 2
3 4
12
5 6
12
12
9 8
1 2
12
11 10
1 2
1 2
1
2
3
4
5
1 2
1
2
3
4
5
12
1 2
1 2
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
TP2
C18
0.1uF
J2A
flex-cable-5
TP3
NIBP LED Circuits
Front Panel - C
J2xA
flex-cable-5
TP4
C4
0.1uF
C1
4.7uF
+
U1F
74HC04
C21
0.1uF
C8
4.7uF
+
C24
0.1uF
C10
4.7uF
+
C20
0.1uF
C11
4.7uF
+
C23
0.1uF
C28
4.7uF
+
C25
0.1uF
C2
0.1uF
R1
2.2K
C3
0.1uF
C26
0.1uF
C5
0.1uF
R71
100
C6
0.1uF
I705124
Front Panel - D
U26
74HC244
C7
0.1uF
Keyboard Circuits
Front Panel - A
R72
100
C16
0.1uF
J1
HEADER 7X2
R73
100
C12
0.1uF
C27
4.7uF
+
TP182
C13
0.1uF
C9
4.7uF
+
TP183
C14
0.1uF
I705144
Front Panel - B
TP184
C15
0.1uF
D1
5x5 Green
U1A
74HC04
C19
0.1uF
D2
5x5 Green
U1B
74HC04
C22
0.1uF
SW13
U1C
74HC04
D10
T1 (3mm) Red
SW9
U1D
74HC04
SW22
SW11
U1E
74HC04
SW28
R67 1.21K
J3A
flex-cable-5
R51316
R66 1.21K
J3xA
flex-cable-5
D13
T1 (3mm) Green
R65 1.21K
R2
2.15K
C17
0.1uF
R68 1.21K
VCC
VCCVCC
VCC VCC VCC VCC VCC
VCC VCC VCC VCC VCC
VCC
VCC VCC VCC
VCC
VCC
VCC VCC
VCC
VCC VCC
VCC
VCC VCCVCC VCC VCC
VCC
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620008 C
Front Panel Display Board
C
1 5Friday, July 23, 1999
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 160
Figure D-13. Front panel display.
ETCO2 Alarm On-Off
HR Alarm On-Off
LH Select
LH Adjust (+)
LH Adjust (-)
SpO2 Alarm On-Off
RH Select
RH Adjust (+)
RH Adjust (-)
NIBP Alarm On-Off
BP Auto
BP Start-Stop
QRS Volume (+)
QRS Volume (-)
Alarm Volume (+)
Alarm Volume (-)
Time
1
5
4
69
10
Pull-up Resistor Network Detail
2 3
78
On / Standby
Jim Belesiu
3/15/99Jim Belesiu
3/15/99620008.dsn
3/23/99
3/23/99
3/23/99
3/23/99
L. Phillips
Z. Psenicnik
J. Bello
5-39251 JAC LPP
B No Load D16
D13 to Low Profile, R51 to 316C
4/28/99LPP LPP5-39485
5-39994 LPP 7/23/99
u2-9
Clock1
HRalarm-sw
LHselect-sw
LHAdjust+sw
LHAdjust-sw
QRSvol+sw
Alarmvol+sw
Alarmvol-sw
Time-sw
etco2-sw
Trend
Lead-Select
NIBPalarm-sw
RHselect-sw
BPauto-sw
RHadjust+sw
RHadjust-sw
SpO2alarm-sw
BPstart/stop-sw
U3-4
QRSvol-sw
u2-10
1 2
1 2
1 2
5
12346789
10
5
43219876
10
1 2
1 2
1 2
1 2
5
12346789
10
SER10
A11
B12
C13
D14
E3
F4
G5
H6
CLK2
INH15
SH/LD1
QH9
QH7
1 2
SER10
A11
B12
C13
D14
E3
F4
G5
H6
CLK2
INH15
SH/LD1
QH9
QH7
1
3
2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
1 2
SER10
A11
B12
C13
D14
E3
F4
G5
H6
CLK2
INH15
SH/LD1
QH9
QH7
1 2
1 2
1 2
1 2
1 2
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
TP80
SW19
TP81
SW20
TP82
SW21
TP86
R6
10K
C
TP85
R5
10K
C
TP84
SW25
TP77
SW26
TP83
SW23
TP87
SW24
TP88
R7
10K
C
U2
74HC165 TP178
SW27
U4
74HC165
D48
BAV99L
SW14
SW4
TP68
SW6
TP69
SW8
TP70
SW10
TP71
SW12
TP66
SW1
TP72SW2 TP73
SW3
TP74
SW5
U3
74HC165
SW7
TP75
SW15
TP76
SW16
TP67
SW17
TP79
SW18
VCC
VCC
VCC
Key-Clock-b
Key-Latch-b
Key-Data-b
Silence-Switch
Trend
Lead-Select
On/Off-sw
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620008 AC
5Friday, July 23, 1999
C
Keyboard Scanner
C
2 5Friday, July 23, 1999
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 161
Figure D-14. Key board scanner.
SpO2 Pulse Rate Hundreds SpO2 Pulse Rate Tens
Temperature Tens
Temperature Ones Temperature Tenths
Temperature Hundreds
SpO2 Pulse Rate Ones
Degree F
Degree C
Jim Belesiu
3/15/99Jim Belesiu
3/15/99620008.dsn
LPP3/23/99JAC5-39251
L. Phillips
Z. Psenicnik
J. Bello
3/24/99
3/24/99
3/24/99
B No Load D16
D13 to Low Profile, R51 to 316C
5-39485 LPP LPP4/28/99
7/23/99LPP5-39994
d36-d
d36-c
u16-15
u16-6
u19-15
u19-3
u19-6
u19-7
d39-d
d39-c
u18-5
d38-d
d38-c
d35-c
u15-6
u15-15
d35-d
d39-b
d35-g
d39-a
d38-g
d36-e
d34-d
u19-out
d38-a
d35-f
d33-b
d34-e
d39-f
d36-bd35-b
d34-f
d34-a
d34-b
d34-g
d38-b
d39-e
d34-c
d39-g
d35-a
d36-g
u15-9
d38-f
d36-a
d38-e
u18-9
d36-f
u14-9
u17-9
d35-e
u17-15
u17-4
u17-5
d37-d
d37-c
d37-e
d37-a
d37-g
d37-b
d37-f
u16-9
LED-Latch-1
u14-4
u14-6
u14-2
u14-15
u14-5
u14-3
u14-1
u15-1
u15-5
u15-4
d33-c
u16-3
u16-4
u16-2
u16-5
u16-1
u15-7
u17-1
u17-2
u18-15
u18-3
u18-1
u18-2
u18-6
u18-4
u19-1
u19-2
u19-5
u19-4
LED-Data-b
u17-3
u15-2
u15-3
u17-6
d35-dp
d46-cu16-7
d47-c
u14-7
u18-7
LED-TP-Enable
Clock2
2
3
4
18
5
6
7"E"
4
"D"5
Anode-11
"C"8
Dp7
"B"9
"A"10
"F"2
Anode-26
"G"3
2
3
4
18
5
6
7
"E"4
"D"5
Anode-11
"C"8
Dp7
"B"9
"A"10
"F"2
Anode-26
"G"3
"E"4
"D"5
Anode-11
"C"8
Dp7
"B"9
"A"10
"F"2
Anode-26
"G"3
"E"4
"D"5
Anode-11
"C"8
Dp7
"B"9
"A"10
"F"2
Anode-26
"G"3
12
1
2
3
45
6
7
8
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
12
2
3
4
18
5
6
7
1
2
3
45
6
7
8
"E"4
"D"5
Anode-11
"C"8
Dp7
"B"9
"A"10
"F"2
Anode-26
"G"3
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
2
3
4
18
5
6
7
1
2
3
45
6
7
8
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
1
2
3
45
6
7
8
2
3
4
18
5
6
7
1
2
3
45
6
7
8
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
1
2
3
45
6
7
8
1
2
3
45
6
7
8
"E"4
"D"5
Anode-11
"C"8
Dp7
"B"9
"A"10
"F"2
Anode-26
"G"3
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
"E"4
"D"5
Anode-11
"C"8
Dp7
"B"9
"A"10
"F"2
Anode-26
"G"3
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
R32
150
D38
7-SEG LED 0.36
A
B
C
D
E
F
G
R27
150
D33
7-SEG LED 0.36
A
B
C
D
E
F
G
TP50
D39
7-SEG LED 0.36
A
B
C
D
E
F
G
TP35
D37
7-SEG LED 0.36
A
B
C
D
E
F
G
D46
T1.75 (5mm) Green
R35
150
R52
215
U14
74HC595A
R53
215
TP14
D47
T1.75 (5mm) Green
TP10
TP21
TP12
TP22
TP30
R28
150
TP52
TP25
R31
150
TP33
D34
7-SEG LED 0.36
A
B
C
D
E
F
G
TP34
U16
74HC595A
TP38
R34
150
TP37
R37
150
TP40
U19
74HC595A
TP61
U18
74HC595A
TP62
R36
150
TP63
R33
150
TP64
R30
150
TP42
U15
74HC595A
TP59
R26
150
TP60
R29
150
TP5
D36
7-SEG LED 0.36
A
B
C
D
E
F
G
U17
74HC595A
D35
7-SEG LED 0.36
A
B
C
D
E
F
G
VCC VCC
VCC
VCCVCC
VCC
VCC
VCC
VCC
VCCVCC
VCC
VCC
VCC
VCC
LED_TP_Data_In
LED_TP_Data_Out
LED_TP_Clock
LED_TP_Latch
LED_TP_Enable
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620008 C
Temp/Pulse LED Drivers
C
3 5Friday, July 23, 1999
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 162
Figure D-15. Temp/pulse LED drivers.
Diastolic Hundreds Diastolic Tens Diastolic Ones
BP Dia Hi BP Dia Lo
Systolic Ones
BP Sys Hi BP Sys LoNIBP Alarm On/Off
Systolic TensSystolic Hundreds
Q30Q60 QxQ1Q5 Q3Q10Q15
Jim Belesiu
3/15/99Jim Belesiu
3/15/99620008.dsn
5.-39251 JAC 3/23/99 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/24/99
3/24/99
3/24/99
B No Load D16
D13 to Low Profile, R51 to 316C
4/28/99LPP LPP5-39485
5-39994 LPP 7/23/99
d44-a
d44-b
d44-c
d45-a
d45-c
d45-b
d44-g
u20-4
d41-g
d42-f
d41-a
d41-d
d42-g
u20-5
d44-e
d42-d
d41-b
d42-a
d45-g
d44-f
d42-c
u20-1
d41-e
d45-dd44-d
u20-6
u20-2
d45-f
d41-f
u19-out
d42-b
d45-e
u20-15
u20-3
u20-out
u23-out
u22-out
u25-out
u21-out
d40-f
d40-b
d40-c
d40-g
d40-a
d41-c
d42-e
d43-d
d43-e
d43-g
d43-fu23-1
u23-3
u24-15
u24-2
u24-3
u24-4
u24-5
u24-6
u25-2
u25-5
d43-c
d43-b
d43-a
u23-4
u20-7 d15-c
Clock3
u23-2
u23-15
u23-5
u23-7
u21-7
d6-c
u21-3
u21-2
u21-15
u21-5
u21-4
u21-6
u22-7
u22-1
u22-3
u22-2
U22-15
u22-4
u22-6
u22-5
d8-c
u25-7
d14-c
u25-1
u25-4
u25-3
u25-15
u24-out
d11-c
u24-7
u24-1
u21-1
u23-6 u25-6
d30-a
d31-a
u13-4
u13-7
u13-15
u13-3
u13-1
u13-6
u13-5
u13-2
d24-a
d28-a
d22-a
d29-a
d25-a
d26-a
u13-out
d40-e
d40-d
LED-NIBP-Enable
LED-Latch-2
12
12
12
12
12
12
12
12
1
2
3
45
6
7
8
"E"1
"D"2
Anode-13
"C"4
Dp5
"B"6
"A"7
"F"9
Anode-28
"G"10
2
3
4
18
5
6
7"E"
1
"D"2
Anode-13
"C"4
Dp5
"B"6
"A"7
"F"9
Anode-28
"G"10
2
3
4
18
5
6
7
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
"E"1
"D"2
Anode-13
"C"4
Dp5
"B"6
"A"7
"F"9
Anode-28
"G"10
1
2
3
45
6
7
81
2
3
45
6
7
8 1
2
3
45
6
7
8
"E"1
"D"2
Anode-13
"C"4
Dp5
"B"6
"A"7
"F"9
Anode-28
"G"10
"E"1
"D"2
Anode-13
"C"4
Dp5
"B"6
"A"7
"F"9
Anode-28
"G"10
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
2
3
4
18
5
6
7
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
12
1
2
3
45
6
7
8
1
2
3
45
6
7
8
1
2
3
45
6
7
8
1
2
3
45
6
7
8
2
3
4
18
5
6
7
2
3
4
18
5
6
7
12
12
2
3
4
18
5
6
7
12
"E"1
"D"2
Anode-13
"C"4
Dp5
"B"6
"A"7
"F"9
Anode-28
"G"10
12
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
TP93
D6
T1.75 (5mm) Green
D28
T1.7
5(5
mm
)Gre
en
TP103
D8
T1.75 (5mm) Green
D26
T1.7
5(5
mm
)Gre
en
R56
215
D11
T1.75 (5mm) Green
D22
T1.7
5(5
mm
)Gre
en
TP110
D14
T1.75 (5mm) Green
D24
T1.7
5(5
mm
)Gre
en
TP111
R42
680
TP142
R57
215
D41
7-SEG LED 0.5
A
B
C
D
E
F
G
TP179
TP137
R40
680
TP141
TP118
D42
7-SEG LED 0.5
A
B
C
D
E
F
G
R58
215
R44
680
U24
74HC595A
TP116
U23
74HC595A
U25
74HC595A
TP128
D43
7-SEG LED 0.5
A
B
C
D
E
F
G
R48
680
TP136
R47
680
R49
680
TP140
TP105
D44
7-SEG LED 0.5
A
B
C
D
E
F
G
TP126
TP89
D45
7-SEG LED 0.5
A
B
C
D
E
F
G
TP130
R54
2.15K
U21
74HC595A
TP180
TP112
U22
74HC595A
TP181
TP138
R38
680
U13
74HC595A
TP114
U20
74HC595A
D31
T1.7
5(5
mm
)Gre
en
TP139
R43
680
R25
150
TP132
R41
680
R24
150
R59
1.21K
R39
680
TP1
R55
215
R46
680
TP8
TP91
D15
T1 (3mm) Red
D29
T1.7
5(5
mm
)Gre
en
TP101
R45
680
D30
T1.7
5(5
mm
)Gre
en
TP113
D40
7-SEG LED 0.5
A
B
C
D
E
F
G
D25
T1.7
5(5
mm
)Gre
en
VCC
VCC VCC
VCC VCC VCC
VCC
VCC VCC
VCCVCC
VCC
VCC
VCC
LED_NIBP_Clock
LED_NIBP_Latch
LED_NIBP_Data_In
Silence-LED
LED_NIBP_Data_Out
LED_NIBP_Enable
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620008 C
NIBP LED Drivers
C
4 5Friday, July 23, 1999
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 163
Figure D-16. NIBP LED drivers.
Jim Belesiu
3/15/99Jim Belesiu
3/15/99620008.dsn
HR Alarm
On/Off
SpO2 % Hundreds
ETCO2 Alarm
On/Off
SpO2 % Ones
SpO2 Bargraph
SpO2 % Tens
SpO2 Alarm
On/Off
SpO2 Lo
SpO2 Hi
3/23/99
3/24/99
3/24/99
3/24/99
L. Phillips
Z. Psenicnik
J. Bello
5-39251 JAC LPP
B No Load D16
D13 to Low Profile, R51 to 316C
5-39485 LPP LPP4/28/99
7/23/99LPP5-39994
u5-1
d9-
c
u7-2
u12-4
d5-e
u12-7
d4-f
u12-out
d4-c
u7-out
d4-g
d27-15
u7-7
u6-5
u5-out
u13-out
u5-4
d12-c
u7-1
u6-3
u6-15
d5-c
d27-18
d27-11
d16-c
u7-6
u12-1
u5-2
d5-d
d27-19
u7-5
d4-e
d27-20
u6-7
d5-g
d27-14
u5-15
d7-c
u7-15
d3-b
u6-2
Clock1
d5-b
d27-17
d27-12
u5-5
u7-4
d4-a
d4-b
u12-6
u12-2
u7-3
d5-f
d27-13
u5-3
d3-c
LED-Latch-2
d4-d
d5-a
d27-16
d18-c
u6-6
u6-1
u6-4
u12-15
u6-out
LED-SPO2-Enable
u5-6
u12-5
u12-3
1
2
3
45
6
7
8
12
"E"1
"D"2
Anode-13
"C"4
Dp5
"B"6
"A"7
"F"9
Anode-28
"G"10
12
4
3
2
18
6
7
5
12
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QC2
QB1
QD3
QE4
QF5
QG6
QH7
QH9
"E"1
"D"2
Anode-13
"C"4
Dp5
"B"6
"A"7
"F"9
Anode-28
"G"10
1
2
3
45
6
7
8
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
4
3
2
18
7
6
5
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
4
3
2
18
7
6
5 4
3
2
18
7
6
5
4
3
2
18
7
6
5
"E"1
"D"2
Anode-13
"C"4
Dp5
"B"6
"A"7
"F"9
Anode-28
"G"10
2
1
5
6
7
8
9
10
3
4
11
12
13
14
15
16
17
18
19
20
12
12
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
R21
680
D7
T1 (3mm) Red
D3
7-SEG LED 0.5
A
B
C
D
E
F
G
TP153
D9
T1 (3mm) Red
TP151
R10
680
D12
T1 (3mm) Red
U7
74HC595AR63
215
R69
681
R64
215
D4
7-SEG LED 0.5
A
B
C
D
E
F
G
TP177
TP162
R23
680
TP175
U12
74HC595A
R9
680
TP155
U5
74HC595A
U6
74HC595A
R70
681
R12
680
TP172
TP143
TP170
TP174
TP168
TP152
R13
680
R62
2.2K
D5
7-SEG LED 0.5
A
B
C
D
E
F
G
D27
10 LED Bargraph
D18
T1.75 (5mm) Green
TP149
D16
No Load
TP173
TP176
VCC
VCC
VCC
VCC
VCC VCC
VCC
VCC
VCC
VCC
VCC
LED_SpO2_Clock
LED_SpO2_Latch
LED_SpO2_Data_In
LED_SpO2_Enable
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620008 C
SPO2 LED Drivers
C
5 5Friday, July 23, 1999
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 164
Figure D-17. SpO2 LED drivers.
Zero Adjust
Size Adjust
Vertical Amplifier
Horizontal Amplifier
Grid Voltages
Video Amplifier
Break Away CRT socket Board
6 Position flat ribbon cable
Connects Main CRT to CRTsocket Board
Ramp Generator
750uSec
16.7mSec
Vertical Sync
5.5uSec
31.7uSec
Horizontal Sync
To Yoke
Unused
Brightness
Adjust
Focus
Adjust
1/2W Carbon Comp
To Main
Board
5-39097 JAC 3/9/99 LPP
Rick Myers
Rick Myers
Mar 4 1999
Mar 4 1999
620011.dsn
L.Phillips
Z.Psenicnik
J.Bello
3/9/99
3/9/99
3/9/99
Modify Video Amplifier
Reduce RF Emissions
ZIP4/15/99JJC5-39339
CIncrease Flex Cable to
3 inches5-39831 6/24/99LPP
D
Width Coil (L3) inductance range changed
Width Coil Inductance
(L3) increased
B
LPP
5-40006 LPP 7/23/99
U4.2
U1.2
u1.7
u1.6
u1.5
vcadj+ vcadj-
vadj
U1.3
u2.2
ramp
q4.b
q3.b
u2.7 u2.6
vert-
hlin hwide
+12filt
q5.c
q5.b
hor+
vert+
q1.b
q1.e
J3.5
J3.6
tube.g4
u4.4
q2.b
q6.d
vcadj
d6.c
Boost
Hor
+B
d5.c
Focus
Vg1
Vd
Vg2
d4.a
J3.1
u4-6
Grid2
C22-2
Video
Hsync
Vsync
Grid1
vidout
tube.vd
tube.g2
J3.3 tube.12V
tube.g1
tube.gnd
tube.g1
j2-3
hor-
q7-g
q8-b
q8-e
u2.1
21
12
2
1
3
4
1 2
21
1 2
1
2
3
4
5
6
12
1 2
12
10
9
7
1
3
5
2
8
1
2
3
4
5
6
7
13 12
12
5 6
11 10
1
2
3
3
2
1
84
1
2
3
4
5
6
3 4
VIN3
VOUT1
GN
D2
5
6
7
84
1
2
3
4
5
6
1
2
3
4
5
3
2
13
2
1
3
2
1
3
2
1
21
3
2
1
9 8
3
2
1
84
5
6
7
84
1 2
21
3
2
1
21
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
L3
15- 35uH
E1
R24
10K
D6
1N4148
C13
22uF
+
Q6
IRF640
D3
1N4935
R28
19.6K
R43
5.11K
E2
D5
1N4937
J1
CON6
R3
23.7K
D4
1N4935
D2
MUR120
C14
.01uF
R15 38.3
R17 10
C1
.1uF
R9
1.47K
D1
1N4148
R23
10K
R45 330
T1
CRT-FBT
To CRT
Anode
J4
CRT-Socket
U4F
74HCT04
C17
.01uF
D7
1N4148
U4C
74HCT04
R10 1K
R51
19.6K
U4E
74HCT04
C16
.01uF
R7
41.2K
Q7
BS170
U2A
MC34072
+
-
R16 10
J3
Flex6
R1
1K
R44 330
U4B
74HCT04
R2
7.50K
R26
1K
R11
1.96K
R50
1.96K
U3MC78L05ACP
R29 100K
U1B
TLC272
+
-
C7.047uF
R25
215
R12
562
C6.047uF
R37
1.96K
C15
.01uF
C8
.022uF
J3x
Flex6
R36
1.96K
C19.01uF
C9
6.8uF
R48
100
R8
41.2K
L1
47uH
R6
41.2K
R41
681
R13
169
R27
10
C2
100pf
J2
CON5
C3.047uF
R18
562
Q2
MPSW51A
C18.047uF
C20
No Load
Q1MPSW01A
R52
1.96K
R14
562
C22
.022uF
R30
100K
C1222uF
+
R20
169
Q8
2N3904
Q4
MPSW51A
R31
10K
E5
Q3
MPSW01A
R21
562
U4D
74HCT04
R19
562
U1A
TLC272
+
-
U2B
MC34072
+
-
R22
10K
C4
.047uF
C522uF
+
U4A
74HCT04
R47 47K
E4
R46 47K
C11
1000uF+
R4
10K
C10
1000uF
+
R5
42.2K
Q5
2N3904
E3
L2
15uH
R32
2.5Meg
+12V
+12V
+12V
+12V+12V
+12V
+12V
+12V
+12V
+12V
+Vvid
+Vvid
+5V
+5V
+5V
+5V
+5V
+5V
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620011 D
CRT Deflection Board
C
1 1Friday, July 23, 1999
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 165
Figure D-18. CRT deflection board.
Printhead
On/Off Switch
Temperature
Amplifier
Thermistor
Input
+24V Boost
(23.6 V nominal)
1
2
3
4
phase +
Connector Pin #
1 3 4 6
+
+ +
+ +
++
Printhead
Connector
Rick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
620014.dsn
5-39179 JAC 3/18/99 LPP
L.Phillips
Z. Psenicnik
J. Bello
3/22/99
3/19/99
3/19/99
Place Bead onPin 2 of Q4
BAdd EMI bead to Q4, improve
radiated emissions5-41395 JB 5/9/00
Rec-Data
U2-fb
Rec-Data-Latch
Q4-D
Rec-Supply-On
U2-comp
U3-10
U1-1
Q4-
G
U1-2
Rec-Strobe
Rec-Clock
U2-
Isen
se
+12V
Q6-e
U2-
ou
t
U3-8
Q4-s
U3-9
Strobe
+24V-switch
Clock
Latch
Strobe
Data
u3-clk
Rec-Motor-Step
clk
data-IO
U3-7
U2-RT
J3-6
u6-6
J3-3
J3-4
u6-clmp
u6-14
u6-11
J3-1
u6-3
U3-5
U3-6
d6-c
Thermistor2
Thermistor1
U1-3
q1-g
Q2-b
U3-3
n24Von
U2-Ref
Vpp
Vpp
u1-7
23
1
4
5 6
3 4
11 10
3
1
2
1
3
2
3
1
2
1
2
3
4
5
6
13 12
13
1B3
2B6
3B11
4B14
1C2
2C7
3C9
4C16
CLMP11
CLMP28
VFB3
ISENSE5
RT/CT7
VREF14
COMP1
OUT10
PWR-
GN
D8
Vcc
12
GN
D9
Vc
11
31
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
5
6
7
84
3
2
1
84
ClkIn/Osc1/RB52
RC5/TOCK15
RC37
Vpp/MCLR/RB34
Clkout/Osc2/RB43
RC46
Vd
d1
Vss
14
RC28
RC19
RC010
RB211
RB112
RB013
2
1
3
4
13
9 8
1 2
1
3
5
7
9
11
13
15
17
19
21
23
2
4
6
8
10
12
14
16
18
20
22
24
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
C14
2200pF
Q4
MTP30N06VL
TP27
U5C
74HCT14
C18
.047uF
U5B
74HCT14
R22
4.22K
C11
.047uF
TP29
U5E
74HCT14
R19
3.16K
TP28
R13
10
Q6
MMBT3904L
TP14
R6
10K R15
147
R16
19.6K
TP8
D3
BAV99L
R2
1K
TP10
R8 23.7K
R36
1.47K
Q2
MMBT3904L
TP24
R14
10K
C6
1uF+
J3
CON6
TP67
C41000uF
+
C3
.01uF
TP66
C81800uF
+
C5 .01uF
TP68
L122uH
TP17
C2
.01uF
R7
84.5K R5
1K
R9
10K
C135600pF
C10
.1uF
D2
MBRS340T3
U5F
74HCT14
D6
27V
U6
ULN2065
R24
1.96K
U2
UC3843A
C12
.047uF
TP9
R18
no-load
TP21
TP3
R35
1.47K
TP1
Q3
2N7002
R12
10K
TP19
J2
CON16
U1B
MC34072
+
-
C21
.047uF
TP23
R33
1.47K
R3
10K
U1A
MC34072
+
-
TP6
U3
PIC16C505
Q1
MTP30P06V
C19
.047uF
R11
5.11K
D1
27V
C1
.047uF
C20
47uF
+
U5D
74HCT14
U5A
74HCT14
R10
10K
C7
.01uF
TP54
R34
1.47K
TP26
R17
0.1
J1
CON24A
R1
51.1K
R4
9.09K
E1
2643000301
+12V
D
+5V
+5V
D
+5V
D
+5V
D
+5V
D
+5V
+5V
D
+5V
D
D
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
+24V
A
+5V
D
A
D
A
+24V
A
A A
A
A
A
+5V
+5V
+5V
A
A
Rec-Temp
+5V
+12V
+5VRecVdc
+24V
RecVdc
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620014 B
Printer Electronics
C
1 1Thursday, May 11, 2000
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 166
Figure D-19. Printer electronics.
Figure D-20. Model 220 main board.
Front Panel
Display Connector
Main PCA
Connector
Recorder Board
Connector
CRT Board
Connector
EKG - Page6
Speaker Drive
Serial
DataOut
4Vpp max.
NIBP - Page 2
SpO2 - Page4
EKG - Page4
To PIC
CO2 Board
Connector
Serial IO - Page8
Page1
(Front Panel Key)
(To U2)
(pg 3)
(pg 1)
Fan
Connector
620017.dsnRick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
5-39121 JAC 3/15/99
L. Phillips
LPP
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet
D
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
5-39455 LPP LPP4/27/99
5-39821 LPP 6/24/99
E
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup5-39936 LPP 7/9/99
LPP
LPP
F
Buffer for ETCO2, Nurse call relay
Modify RLD to reduce V-Lead noise
Improve ESU rejection
G
SpO2 bypass cap, RS232 PS mods
4KV nurse call relay,Improve CMRR for Resp Topology
5-44461 3/26/02LPP JK
JK5-44857 LPP 7/18/02
U7-wc
SPI-Data-Out
Spare-3
NIBP-15mmHg
NIBP-Data
Spare-2
SCL
Video-Data
SCD
SPO2-Tx
LED-Data-b
NIBP-Safety
Video-Data
hReset
NIBP-OP
Video-VSync
Video-HSync
Video-VSync
Video-HSync
Speaker-Audio
SPI-data-in
SPO2-Rx
SPO2-Rx
NIBP-PWM-ADC
NIBP-Valve-Close
Vbackup
RS232-CTS
EROM-wr
ETCO2-Tx
FE-Clock
EKG-Data-Clock
PIC-Data
LED-Latch-b
LED-Latch
Key-Latch-n
RS423-Rx
RS423-Tx
Nurse-Call
Batt-ID
q2-c
Q1-e
+3.3V
Q2-b
ACON-LED
PIC-audio
NIBP-Offset-DAC
NIBP2-PW-ADC
LED-Data
Key-Latch-n-b
LED-On
LED-On
PIC-Clk
U2-Clk
SPI-Clock
Key-clock
Key-Clock-b
Rec-Clock
Rec-Motor-Step
Rec-Clock
Rec-Data-Latch Rec-Strobe
Rec-Data-Latch
Rec-Strobe
PIC-Vprog
Rec-Data
Rec-Motor-Step
Rec-Supply-On
Audio-Shutdown
SMR17-1
U9-
4SP
U9-3
Audio-Shutdown
U8-10
EKG-ADC-Clock
Power-Sync
ADC-Clock
EKG-PWM-ADC
Power-Sync
FE-Data
FE-Data
ETCO2-TX-B
Key-Data
ETCO2-Rx
1
2
3
4
5
6
7
3 4
11 10
56
5 6
3
4
1 672
8
5
11
33
55
77
99
1111
1313
1515
1717
1919
2121
2323
2525
2727
2929
3131
3333
3535
3737
3939
4141
4343
4545
4747
4949
5151
5353
5555
5757
5959
22
44
66
88
1010
1212
1414
1616
1818
2020
2222
2424
2626
2828
3030
3232
3434
3636
3838
4040
4242
4444
4646
4848
5050
5252
5454
5656
5858
6060
12
12
13
11
+1
+3
+5
+7
+9
+11
+13
+2
+4
+6
+8
+10
+12
+14
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
1
2
3
1
2
3
4
5
6
1
2
3
3
1
2
12
1
2
4
5
6
3
1
2
13 12
1
2
3
13 12
1
2
3
4
3
1
2
9 8
9 8
ClkIn/Osc1/RB52
TC5/TOCK15
RC37
Vpp/MCLR/RB34
Clkout/Osc2/RB43
RC46
Vd
d1
Vss
14
RC28
RC19
RC010
RB211
RB112
RB013
9
10
8
11 10
3 4
A01
A12
A23
SCL6
WC7
SDA5
1
3
5
7
9
11
13
15
17
19
21
23
2
4
6
8
10
12
14
16
18
20
22
24
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
J1
CON7
U1B
74HCT04
U8E
74HCT04
C37
0.1uF
U1C
74HCT04
TP14
TP13
TP15
C7
330uF+
U8C
74HCT04
U9
TPA301
+
-
C8
.047uF
TP12
J4
Socket 30x2
U8A
74HCT04
R2
1.96K
TP18
R19
19.6K
R4
10K
U3D
74HCT08
J8
CON14AP
U2
74HCT595
R5
19.6K
C36
4.7uF
+U3A
74HCT08
C22
.047uF
TP17
C39
.047uF
J6
CON6
J2
CON3
TP23
C1
.047uF
TP24
Q2
MMBT3904L
U1A
74HCT04
C20
.047uF
R8
1.96K
R15
1.96K
J5
CON2
TP16
C23
.047uF
C29
.047uF
R16
3.48K
U3B
74HCT08
TP19
Q3
2N7002
R21
10K
TP1
U8F
74HCT04
J11
CON3
TP2
TP22
R6
1.96K
TP20
TP3
R3
10KTP21
TP4
R1
10K
U1F
74HCT04
J3
CON4
R20
10K
C41
1uF+
TP26
C40
.047uF
Q1
MMBT3906L
C4
330uF+
R22
10K
U8D
74HCT04
U1D
74HCT04
TP11
C14
.047uF
C5
.047uF
U10
D620361-MX10000
R23
1.21K
U3C
74HCT08
C42
.047uF
R24
1.21K
C6
100uF+
U1E
74HCT04
U8B
74HCT04
TP7
C3
220pF
C38
220pF
C30
.047uF
TP9
TP5
U7
AT24C02N-10SC-2.7
TP25
TP10
J7
CON24A
TP6
C35
4.7uF
+
TP8
R25
1.21K
R17
19.6K
R18
1.21K
C2
.047uF
+5V
+3.3V
+5V
D
D
D
D
D D
D
D
D
D
DD
D
D
D
D
D
D
+5V
D
+5V
D
+5V
D
+5V
D
D
D
+5V
A D
+3.3V
D
DD
+5V
+5V
D
D
+5V
+3.3V +5V
+5V
+5V
D
D
D
D
+5V
+5V
+12V
+5V
D
D
+5V
D
D
+5V
+5V
+5V
D
+5V
Vbackup
FE-Data-Clock
FE-ADC-Clock
FE-Data-In
+12V
NIBP-15mmHg
NIBP-Safety
NIBP-PWM-ADC
NIBP-Offset-DAC
NIBP-ADC-Clock
NIBP-Overpressure
NIBP-A/D-SelA
SpO2OutNIBP-Valve-Close
NIBP-Pump-On
NIBP-A/D-SelB
NIBP-A/D-SelC
FE-Pwr-Sync
On/Off-Key
ac-on
+3.3V
U2-Reset
PIC-Data
RS423Rx
RS423Tx
NurseCall
AC+12V
Rec-GND
Battery
+3.3V
ac-on
AC+12V-fuse
ACON
+12V
Rec+DCV
Rec-GND
Rec-GND
Rec+DCV
Rec-GND
+12V
PIC-Clk
U2-Reset
PIC-Data
Vbackup
On/Off
Batt-ID
On/Off-Key
Print-Temp
+5V
Rec-Supply-On
Rec+DCV
FE-PWM-ADC
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620017 G
Main Board - Model 220
C
1 8Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 167
Figure D-21. 210/220 NIBP electronics.
A/D Mux
Zero Adjust
+/-20mmHg range
PWM A/D
Converter
0mmHG = 0.5V
300mmHG = 4.0V
PWM D/A
76.8KHz
Primary
Transducer
NIBP
PWM A/D
Converter
Zero
Offset
Safety
Transducer
Over Pressure
Fault Circuit
620017.dsnRick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
3/15/99JAC5-39121 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet
D
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
5-39455 LPP 4/27/99 LPP
6/24/995-39821 LPP
E
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup
F
Buffer for ETCO2, Nurse call relay
Modify RLD to reduce V-Lead noise
Improve ESU rejection
G
SpO2 bypass cap, RS232 PS mods
4KV nurse call relay,Improve CMRR for Resp Topology
5-39936
5-44461
LPP
LPP
7/9/99
3/26/02
LPP
LPP
7/18/025-44857 LPP
JK
JK
D201-C
U208-2
U210-7
U204-7
U204-5
U203-3
U203-5
C207-1
U204-3
U204-2
U205-7
U206-6
U206-1
P202-Out-
U206-7
U206-2
U202-3
P202-2
P202-5
U202-5
U208-1
u207-9
PrimaryPres
P4.25V
SafetyPres
U208-3
P201-Out
P201-6
U204-1
U209-Out
U203-6
P202-Out+
U210-2
U210-3
U203-2
Q201-B
P.75V
+5V/2
U205-3
Q202-G
Pump-
Pump+D20
1-A
Valve-
Valve+
U207-3
P201-pwr
U208-7
3
2
1
84
3
2
1
84
IN8
OUT1
GN
D2
GN
D3
GN
D6
GN
D7
3
2
1
84
5
6
7
84
3
1
2
5
6
7
84
1
3
2
5
6
7
84
1
3
2
1
2
3
6
5
6
7
84
4
5
6
2
3
61 4
7
5
8
1
2
5 67
3
4
1
2
3
5
6
7
84
3
2
1
84
5
6
7
84
1
2
3
4
5
9
10
8
12
13
11
3
2
1
84
2
1
3
5
6
3
2
1
84
8
1
2
5 67
3
4
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
X3
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
U203A
LM393
+
-
C215
.047uF
U202A
MC34072
+
-
C225
.047uF
C224
1000pF
U201
78L05
TP214
R233
3.48K
U208A
MC34072
+
-
TP206
R221
3.16K
C213
.01uF
R232
10K
R230
10K
C2024.7uF
+
R242
10K
C222
.01uF
U205B
MC34072
+
-
R231
73.2K
TP217
Q201
MMBT3904L
U206B
MC34072
+
-
C223
.01uF
TP225
D202
BAV99L
R240
10K
R235
3.48K
R229
1.96K
U203B
LM393
+
-
R241
10K
R237
464K
D201
MMBD1503A
L201
220uH
TP228
C220
.01uF
R243
100K
XFPM-050KPGR-P1
P201
Gain
and
Comp
U202B
MC34072
+
-
TP207
U207B
74HCT00
TP231
TP210
C232
.047uF
U210
MAX941
+
-
C201
.047uF
TP211
TP201
TP204
C229
10uF+
TP237
C212
680pF
TP240
TP232
C221
.047uF
Q202
MMDF2N02E
TP234
C205
.047uF
R214
10K
C209
.047uF
TP226
R219
1.96K
C211
.047uF
R246
31.6
C226
.047uF
C216
.047uF
R215
100K
C231
.01uF
U207A
74HCT00
C204
.047uF
TP221
C227
680pF
TP222
C207
1uF+
R216
19.6K
U204B
MC34072
+
-
R239
1K
R201
576
C208
1uF+
U204A
MC34072
+
-
C203
.047uF
TP235
TP224
R203
3.32K
R205
750
C210
.047uF
TP212
TP208
R244
21.5K
TP213
C206
.047uF
TP215
TP220
U208B
MC34072
+
-
L202
Bead
R227
5.11K
R236
3.83K
J201
CON5TP219
R223
21.5K
U207C
74HCT00
R222
1K
R228
1.96K
R224
1K
C230
.047uF
U207D
74HCT00
TP239
TP236
R225
1K
U205A
MC34072
+
-
TP202
R211
1.96K
R226
21.5K
R208
1.96K
C217
.047uF
FPNS-07PGR
P202
-+
C218
4.7uF+
C219
.047uF
C228
.047uF
R247
1K
TP209
R204
150
R248
1K
R218
23.7K
R202
174
R217
5.62K
R212
56.2K
R234
3.48K
U206A
MC34072
+
-
R213
237K
Q203
MMDF2N02E
R209
1K
TP227
TP216
R207
464K
TP229
R220
806
R210
464K
U209
4051
TP233
TP238
TP203
R206
1K
TP230
C214
.047uF
P+12V
P+12V
P+12V
P+12V
P+12V
+3.3V
+3.3V
P+12V
P+12V
P+12V
P+12V
P+12V
P+12V
+12V
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
AA
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
AA
A
A
A
A
P+12V
A
A
NIBP-Offset-DAC
NIBP-ADC-Clock
P+.75V
NIBP-Safety
NIBP-PWM-ADC
P+12V
5VRef
NIBP-Overpressure
NIBP-15mmHg
Print-Temp
NIBP-A/D-SelB
+12V
+3.3V
+5V
P+.75V
NIBP-A/D-SelA
NIBP-A/D-SelC
BattCurrent
BattVoltage
+5V +Vpump
NIBP-Pump-OnNIBP-Valve-Close
P+5V
P+5V
P+5V
P+5V
P+5V
P+5V
P+5VP+5V
P+5V
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620017 G
NIBP ELECTRONICS
C
2 8Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 168
Figure D-22. DC/DC power supply.
On/Off Switch
+12V Boost
(12.1V nominal)
Float Voltage
On/Off Circuit
18V Boost - Mosfet Gate Voltage
Current Limit
(1.5 Amp)
+5V Linear
LowDropout
BatteryCharger
Heatsink
forQ312
Ibatt=0: BattCurr=0.74V
Ibatt=1.5: BattCurr=2.87V
Heatsink
for D301
620017.dsnRick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
5-39121 JAC 3/15/99 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet LPP LPP5-39455 4/27/99
5-39936
F
E LPP
LPP
LPP
5-39821
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup7/9/99
D
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
LPP 6/24/99
Buffer for ETCO2, Nurse call relay
Modify RLD to reduce V-Lead noise
Improve ESU rejection
G
SpO2 bypass cap, RS232 PS mods
4KV nurse call relay,
Improve CMR for Resp Topology
5-44461 LPP 3/26/02 JK
JK7/18/02LPP5-44857
U30
4-1
Q30
6-b
U301-ct
U30
5-1
U302-pwr
Q302-c
U305-6
Q305-d
Q307-e
Q308-d
U302-comp
U302-fb
U304-5
C324-2
U302-ct
Q31
0-b
U304-3
Q30
5-s
U303-ct
Q304-e
RT301-1
U303-5 U305-pwr
R339-2
Bat-Adj
U304-7
U30
5-2
Q306-c
D307-A
U302-sense
U305-3
Bat-fuse
U30
2-ou
t
Q308-g
U304-2
V+18V
I-Batt
Q309-3
U304-6
C319-1
Q312-g
U301-comp
Q309-b
U305-5
C305-1
D312-c
Q313-d
Q314-d
U301-sw
U30
3-ou
t
U301-pwr
U301-7
Q30
5-g
u307-6
Batt-fb
U303-fb
U303-cp
D304-C
L302
-1
Q303-s
Q302-B
Q301-b
C33
9-1
Q310-c
D309-a
R343-1
F302-2 AC+12V-fuse
23
1
4
1
3
2
4
IN1
OUT3
GN
D2
1
3
2
2 3
1
4
1
3
2
13
5
6
7
84
COMP5
TCAP3
IPK7
IDC8
ISWC1
ISWE2
Vcc6
GN
D4
3
1
2
3
2
1
84
1
3
2
23
1
4
1
3
2
VFB3
ISENSE5
RT/CT7
VREF14
COMP1
OUT10
PWR-
GN
D8
Vcc
12
GN
D9
Vc11
3
2
1
84
13
2
VFB3
ISENSE5
RT/CT7
VREF14
COMP1
OUT10
PWR-
GN
D8
Vcc
12
GN
D9
Vc11
3
1
2
VIN8
FDBK7
SHTDN3
TAP6
SENS2
VOUT1
ERR5
3
1
2
1
3
2
3
1
2
3
1
21
3
2
3
1
2
3
2
1
3
1
2
5
6
7
84
3
1
2
2
1
3
4
2 3
1
4
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
Q305
MTP30N06VL
TP321
TP340
D301
MBR2535CTL
C326
.01uF
U306LF33CV
TP335
C323
100uF+
R333
19.6K
C325
100uF+
TP322
C322
.047uF
D308 BAV99L
R347
10K
Q312
MTP30N06VL
R350
10K
TP345
L305
Bead
R306
61.9K
TP302
TP341
D302
BAV99L
R339
19.6K
F303
4Amp
C305
5600pF
D303
5.1V
TP304
TP323
C3314.7uF
+
U305B
MC34072
+
-
R335
4.32K
C306
1uF+
C3324.7uF
+
TP355
TP348
R311
10K
TP331
TP328
R349
10K
U301
MC34063AD TP307
Q310
MMBT3904L
TP315
U304A
MC34072
+
-
R341
10K
TP346
D309
BAV70L
D310
MBRS340T3
TP330 R332
19.6K
C314
.047uF
C333
.047uF
TP306
C3121000uF
+
C307
.047uF
R353
5.11K
R319
19.6K
R331
33.2K
HS302
6078
C337
.047uF
R302
1.96K
Q311
MTP30N06VL
R301
10K
C319
1000uF+
R310
10K
C324
1000pF
TP332
D312
BAV99L
U302
UC3843A
R312
3.83K
TP316
C340
.047uF
TP305
TP350
R355
14.7K
R304
100K
C3095600pF
R327
0.1
C302
1uF+
C3101000uF
+
U305A
MC34072
+
-
D304
MBRS340T3
L30222uH
R344
10K
R325
1.96K
L306
Bead
R307
4.64K
TP329
TP347
R338
1K
C301
330uF+
R324
10K
R322
10K
U303
UC3843A
L304
47uH
Q307
MMBT3904L
R340
10K
RT301
10K
t
R318
10K
U307
LP2951CD-3.3
R329
1K
Q313
2N7002
R337
8.87K
D311
BAV70L
F301
4Amp
Q314
2N7002
Q306
MMBT3904L
R334
19.6K
R315
196
D305
BAV99L
Q304
MMBT3904L
R330
33.2K
C338
.047uF
C335
.047uF
C316
2200pF
Q301
MPSW51A
TP336
R345
10K
C329100uF
+
C327
.047uF
C339
1uF+
R303
51.1K
Q309
MMBT3906L
D306
MBRS340T3
C318
330uF+
U304B
MC34072
+
-
C330
.047uF
TP339
D307
MBRS340T3
Q302
MMBT3904L
TP337
R323 1.96K
R352
5.11K
TP326
R313
1.96K
C328
.047uF
TP324
R326
10
TP354
C3111000uF
+
R354
5.11K
C304
100uF+
R314
10
TP317
TP313
C315
.047uF
R351
5.11K
TP311
R348
10K
Q308
MTP23P06V
TP338
R346
100
TP320
Q303
MTP30N06VL
TP351
TP318
TP343
R342
19.6K
F302
4Amp
R309
4.64K
C303
470pf
C334
.047uF
TP342
TP352
TP314
C321
.01uF
TP312
R320
7.5K
TP333
TP349
C313
330uF+
R317
7.5K
R336
7.5K
C320
.01uF
L303
Bead
C336
.047uF
C308
2200pF
R305
1
TP309
R343
10K
R316
0.1
TP308
R328
1K
R321
27.4K
L3011mH
TP310
TP344
R308
17.8K
TP319
TP334
TP353
HS301
6078
+12V
+12V
D D
D
DDD
+12V
D
+5V
5VRef
5VRef
Ref-Batcharge
+12V
ACON
ACON
Ref-Batcharge
Battery
On/Off
+5V
AC+12V
+Vpump
Ref-Batcharge
VBackup
+3.3V
BattVoltage
BattCurrent
AC+12V-fuse
AC+12V-fuse
AC+12V-fuse
AC+12V-fuse
Rec+DCV
+Vfuse
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620017 G
DC/DC Power Supplies
C
3 8Monday, November 04, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 169
Figure D-23. Power isolation/SpO2 interface.
Isolation
Barrier
Isolated SpO2Circuits
Grounded SpO2Circuits
Nonin SpO2Connector
Nellcor SpO2Connector
620017.dsnRick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
3/15/99JAC5-39121 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet
SpO2 ESD
Ground
5-39455 LPP LPP4/27/99
LPP
6/24/995-39821
LPP
D
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup7/9/99
F
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
LPP
5-39936E
LPP
Buffer for ETCO2, Nurse call relay
Modify RLD to reduce V-Lead noise
Improve ESU rejection
G
SpO2 bypass cap, RS232 PS mods
4KV nurse call relay,
Improve CMR for Resp Toplogy
5-44461 LPP 3/26/02
5-44857 LPP 7/18/02
JK
JK
U402-1
C409-1
T401-4
Q40
1-g
U402-sen
opto-fb
iso401-a
Q40
2-e
Q401-s
U401-1
C408-2
U401-2
iso401-b
sSpO2tx
Q403-e
sSpO2tx
U402-e
U402-ref
U402-rt
iso402-a
U401-5
U401-3
U403-fb
f-V
f+V T401-1
T401-8
U401-7
R419-2
U402-ct
U411-6
1
2
5
6
7
84
3
2
1
84
5
8
1
2
3
4
IN8
OUT1
GN
D2
GN
D3
GN
D6
GN
D7
1 6
2
5
4
+1
+3
+5
+7
+9
+11
+13
+2
+4
+6
+8
+10
+12
+14
2
3
8
6
5
1
3
2
IN2
OUT1
IN3
IN6
IN7
GN
D5
1
2
3
4
VIN8
FDBK7
SHTDN3
TAP6
SENS2
VOUT1
ERR5
V-1
V+2
VREF16
VIN
15
COMP9
+SENSE4
-SENSE5
SHTDWN10
RT6
CT7
CA12
EA11
CB13
EB14
OSCOUT3
GN
D8
3
1
2
3
1
2
23
1
4
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
C43110uF
+
TP451
TP459
J403
Tab-.187
U401B
LM358
+
-
C432
10uF
+
TP466
TP462
U401A
LM358
+
-
TP464
R405
215
TP455
R423
5.11K
C404
.047uF
C409
470pf
C436
1000pF
R414
1.96K
T401
IsoXfmr
TP463
C411
2200pF
TP452
C401
.047uF
C403
.047uF
TP460
R412
511
R424
10K
R417
10K
TP449
TP461
C406
100uF+
C417
680pF
C437
330uF+
TP453
R415
100
TP467
TP465
TP454
C430
.047uF
C407
100uF
+
D403
MBRS130T3
U407
78L05
R404
196K
TP450
D401
MBRS130T3
C416
.047uF
R401
10K
C405
100uF+
C43410uF
+
L401
220uH
U410
4N25
TP468 L402
220uH
J402
CON14AP
TP456
C429
.047uF
C402
.047uF
C420
.047uF
R411
5.11K
R407
10
U411
HCNW4503
D405
BAV99L
R403
1K
R409
5.11K
R408
100
TP457
C410
.01uF
C435
10uF
+
U404
79L05
C413
.047uF
R406
0.2
J401
CON4
R419
215
C414
.047uF
U403
LP2951C
R410
7.5K
TP469
C418
4.7uF+
R422
10K
C433
470pf
U402
LM3524DM
C41210uF
+
Q402
MMBT3906L
TP458
C408
.01uf
R402
10K
C41910uF
+
Q403
MMBT3904L C422
.047uF
R416
10K
C415
1uF+
Q401
MTD3055V
C424
.047uF
C421
1uF
+
C42810uF
+C427
.047uF
S
S
S
S
S S
iso+5Vdig
S
S
S
S
ED
ED
SS S
S S
S
SS
S
S
SS
S
S S
S
S
S
S
S
ED SE
S
S
S
S
S
FE-Pwr-Sync
SpO2Out
+5V
+12V
+12V
s+5V
f+V
+5V
fVcc
fVee
f+5V
f+V
SpO2-Reset
s+5V
iso+5Vdig
s-5V
s-5V
s+5V
iso+5Vdig
s+5V
f+V
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620017 G
Power Isolation and SpO2 Interface
C
4 8Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 170
Figure D-24. 210/220 ECG amp.
620017.dsnRick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
5-39121 JAC 3/15/99 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet
D
4/27/995-39455 LPP LPP
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
5-39821 LPP 6/24/99
5-39936
F
E LPP LPP
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup7/9/99
0.1%
Input Buffers
Gain = 9.26
0.1%
U503
Gain Stage
Gain = 74
0.1%
Defib Protect
Clamp voltage for Temp
and Resp circuits
U506
Wilson
Network
ESU filter
0.1%
Lead Select
0.1%
0.1%
U507
A/D Inputs
Leads Off
Shield
U504
Diff Amp
Gain = 1
0.1%
U502 U508
0.1%
0.1%
0.1%
No Load,
Allows RLD switch
to V-Lead, not used.
0.1%
U501 U505
0.1%
RLD Amp
V-Lead Defib Protect,
Diodes internal to U504
protect other inputs.
High Pass (0.05Hz or 0.5Hz)
Low Pass (150Hz)
Buffer for ETCO2, Nurse call relay
Modify RLD to reduce V-Lead noise
Improve ESU rejection
G
SpO2 bypass cap, RS232 PS mods
4KV nurse call relay,
Improve CMR for Resp Toplogy
5-44461 LPP 3/26/02
LPP
JK
JK5-44857 LPP 7/18/02
U503-5
Q504-g
U501-3
LA
diff-out
U501-5
C514-2
-clamp
C538-1
U501-6
LA
mux-
C537-1
u509-4
U501-2
R509-1
diff-
V-
Q504-d
Q50
1-S
C540-1
U502-2
U508-5
Right-Leg
C504-1
C505-1
C502-1
RA
Left-Leg
R511-1
diff+
C503-1
V-Lead
C539-1
ecg-hp
R515-1
mux+
U502-6
C501-1
U508-2
+clamp
V+ U50
8-1
U503-2
LL
RA
LL
aVR
Left-Arm
R513-1
aVL
U502-5
U508-3
U502-3
Q501-G
C541-1
Right-Arm
U508-6
RL-mux
LA
aVF
Q504-s
LL
5
6
7
84
3
2
1
84
3
1
23
1
2
3
2
1
84
5
6
7
84
5
6
7
84
4
3
1
25
1
3
2
3
1
2
1
2
3
4
5
6
13
S13
IN11
S214
IN216
S311
IN39
S46
IN48
V+13
V-4
GND5
D12
D215
D310
D47
1 3
3
2
1
84
5
6
7
84
5
6
7
84
3
2
1
84
3
2
1
84
3
1
2
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
X3
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
X3
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
C520
.047uF
TP542
R559
22Meg
R517
10K
C530
.047uF
C525
.047uF
R555
30.1K
TP505
C506
100pF
C526
.047uF
R556
10K
U507B
TL072
+
-
U507A
TL072
+
-
TP539
TP501
N501
LAMP NEON
C528
.047uF
Q504
2N7002
C546
NL
R544
10K
C532
.047uF
R501
19.6K
TP559
R563
73.2K
C527
.047uF
C501
330pF
R547
10K
TP538
R508
10K
C531
.047uF
R549
110K
C536
.01uF
TP524
C533
.047uF
TP540
TP530
R552
1K
C538
220pF
TP518
C529
.047uF
R560
22Meg
TP509
R551
73.2K
R509
22Meg
TP551
C540
220pF
N502
LAMP NEON
TP517
R526
10K
TP533
R502
19.6K
TP521
C517
.01uF
C505
330pF
C544
1000pF
Q505
2N7002
R510
10K
U501A
TL072
+
-
C504
330pF
TP562
C539
220pF
TP513
R519
10K
C509
100pF
TP511R562
73.2K TP558
U502B
TL072
+
-
R520
1.21K
TP543
U508B
AD712
+
-
R511
22Meg
R548
1Meg
N503
LAMP NEON
TP550
C515
3.3uF
R514
10K
TP534
TP514
R557
22Meg
TP560
R550
19.6K
R503
19.6K
TP549
TP541
U509
LMC7101
-
+
D505
MMBD1503A
TP515
C542
220pF
TP503
TP531
R567
NL
R512
10K
TP537
C535
4.7uF
+
TP527
TP544
R561
73.2K
TP512
C534
4.7uF+
C523
.047uF
Q502
NL
TP519
R521
10K
C519
.047uF
R545
10K
TP545
R513
22Meg
TP510
TP523
R523
10K
J501
CON6
R553
100K
TP536
TP504
D506
5.1V
C503
330pF
R565
121K
U504
DG202CSE
R524
1.21K
TP508
R515
22Meg
D507
5.1V
TP535
N504
LAMP NEON
R518
1.21K
TP520
R504
19.6K
U503A
TL072
+
-
R522
1.21K
C543
.047uF
TP502
TP522
TP547
TP557
U501B
TL072
+
-
C510
220pF
TP526
U503B
TL072
+
-
C511
220pF
C537
220pF
N505
LAMP NEON
C512
220pF
C513
220pF
TP507
U508A
AD712
+
-
C508
100pF
R516
10K
R564
73.2K
C507
100pF
U502A
TL072
+
-
R505
19.6K
C541
220pF
R530 10K
R566
73.2K
C502
330pF
R531 10K
TP532
C545
1000pF
R558
22Meg
R533 10K
R527
1K
R535 10K
C514
0.1uF
TP506
Q501
NL
TP525
R536 10K
R528
51.1K
C516
.047uF
R537 10K
TP552
R525
10K
R507
10K
TP516
TP548
C518
.047uF
R532 10K
R529 10K
R534 10K
C522
.047uF
C521
.047uF
U505
4051
TP529
TP561R506
10K
R546
10K
C524
.047uF
U506
4051
TP528
E
E
E
E
S
E
S
E
E
fVee
S
E
E
E
fVee
fVcc
fVcc
E
fVcc
E
fVcc
fVee
E
E
E
fVcc
E
E
E
fVcc
fVee
E
E
E
fVee
E
E
fVee
S E
E
E
E
E
fVcc
E
fVee
E
E
E
fVcc
E
E
fVcc
E
fVcc
fVee
fVee
fVee
E
E
S
E
fVee
E
E
fVee
fVcc
fVcc
fVcc
E
E
E
fVee
EE
E
E
E
E
fVee
fVcc
fVee
E
fVcc
E
E
E
E
fVcc
fVee
Sw-RLD-V
f+1.24V
RA
+clamp
V+
fVee
Mux-LdS-B
f+5V
Left-Arm
VLdsOff
-clamp
vRL
VLdsOff
Mux-LdS-C
VLdsOff
LA
Sw-RLD-RA
Sw-RLD-LA
An-ECG
VLdsOff
LL
Right-Arm
Sw-MonBw
VLdsOff
Mux-LdS-A
Sw-RLD-RL
fVcc
Sw-RLD-LL
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620017 G
ECG Amp
C
5 8Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 171
Figure D-25. 210/220 ECG A/D interface.
620017.dsnRick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
3/15/99JAC5-39121 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet 5-39455 LPP 4/27/99
D
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
LPP
6/24/995-39821 LPP
5-39936
F
E LPP LPP
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup7/9/99
LPP
U608
MuxA
+5V
MuxB
A/D Mux
Integrator
Input
Temperature
Thermistor
0.1%
(U604-10)
U601
Temperature
Amplifier
-5V
U602
Analog In
833uSec
U602
52uSec
Isolation
Barrier
U603
PWM
A/DConverter
U609
PWM-timer
U608
Comparator
Inputs
U606
U603
PWM-Out
U601
Serial/Parallel
Control Data
U609
U605
(U604-8)
Buffer for ETCO2, Nurse call relay
Modify RLD to reduce V-Lead noise
Improve ESU rejection
G
SpO2 bypass cap, RS232 PS mods
4KV nurse call relay,
Improve CMR for Resp Toplogy
LPP5-44461 3/26/02
7/18/02
JK
JKLPP5-44857
MuxA
U608-1
Mux-A/D-C
U608-2
U601-1
U60
4-3
U604-10
U604-2
U60
3out
U611-6
Patient-Temp
Mux-A/D-A
U604-6
U612-6
U60
2-7
U60
4-5
U601-7
U613-6
iso603-a
U605-12
MuxB
iso601-a
iso602-a
U604-4
Mux-A/D-B
SW-RL-V
Resp-LdsOff
Q60
1-e
U60
4-8
U610-6
Sw-RespReset
Temp-In
U60
2-2
U608-3
iso604-a
MonBw
U601-2
U60
2-5
U605-out
U602-3
U601-3
D601-2
U60
4-1
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
13 12
12
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
X3
1
2
2
3
8
6
5
2
3
8
6
5
2
3
7
5 6
4 1
8
3
1
2
2
3
8
6
5
SER14
SRCLK11
SRCLR10
RCLK12
G13
QA15
QB1
QC2
QD3
QE4
QF5
QG6
QH7
QH9
56
9 8
11 10
2
3
8
6
5
3
2
1
84
3
2
1
84
1
3
2
5
6
7
84
3
2
1
84
1
3
2
34
5
6
7
84
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
X3
5
6
7
84
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
U606
74HCT595
U604F
74HCT04
TP621
TP603
TP624
R625
1K
R630
10K
TP639
C638
.047uF
U604A
74HCT04
U609
4051
R604
10K
C637
.047uF
C646
1000pF
C624
.047uF
R603
46.4K
TP642
R601
10K
TP623
R602
73.2K
R631
5.11K
TP607
R605
3.48K
R623
46.4K
TP636
R627 1.21K
R607
464K
C632
.047uF
C645
100pF
J601
CON2
R608
1K
TP631
U611
HCNW4503
U613
HCNW4503
U602
LM311
+
-
Q601
MMBT3904L
TP640U612
HCNW4503
TP637
R611
6.19K
C629
.047uF
R610
511
TP604
TP641
TP633
U605
74HCT595
TP616
R613
6.19K
U604C
74HCT04
C603
680pF
C640
.047uF
R621
215
TP629
C639
.047uF
TP617
C642
0.1uF
U604D
74HCT04
R615
6.19K
C641
0.1uF
TP618
C631
.047uF
TP628
R622
46.4K
TP627
TP643
C609
4.7uF+
U604E
74HCT04
R619
619
U610
HCNW4503
TP632
R620
619
TP635
R624
51.1K
C636
2200pF
C633
.01uF
TP625
C625
.047uF
C601
1000pF
U601A
MC34072
+
-
C626
.047uF
TP638
C627
.047uF
C634 .01uF
TP610
TP630
R632
5.11K
R617
2.15K
TP611
TP601
C647
100pF
TP626
C628
0.1uF
U608A
AD712
+
-
D601
MMBD1503A
R626
1K
C623
.047uF
R629
10K
C621
0.1uF
TP615
C635 .01uF
TP609
C614
4.7uF
+
C644
220pF
U607B
LM393
+
-
C622
.047uF
U607A
LM393
+
-
C630
4.7uF
+
TP612
D602
BAV99L
U604B
74HCT04
TP613
U601B
MC34072
+
-
TP605
C643
220pF
TP614
TP606
U603
4051
TP620
R606
3.48K
U608B
AD712
+
-
R628
10K
fVcc
E
fVcc
fVcc
E
fVee
ED
fVee
E
ED
E
f+5V
E
ED
E
E
iso+5Vdig
ED
fVee
E
fVcc
ED
iso+5Vdig
f+5V
fVee
E
E
f+5V
ED
fVee
E
fVee
ED
fVcc
E
iso+5Vdig
E
f+5V
fVcc
fVcc
fVee
ED
ED
E
fVcc
f+5VfVcc
E
fVcc
E
E
E
ED
E
iso+5Vdig
E fVcc
f+5V
f+5V
fVee
ED
ED
fVee
E
ED
EE
E
E
E
ED
iso+5Vdig
FE-ADC-Clock
Mux-LdS-C
Mux-LdS-B
+5V
SW-RLD-V
fVcc
Mux-LdS-A
SW-RLD-RL
An-Resp
LA
f+1.24V
iso+5Vdig
vRL
RA
Resp-DC
FE-Data-Clock
-Clamp
Sw-MonBw
f+1.24V
iso+5Vdig
An-ECG
+5V
SW-RLD-RA
SW-RLD-LL
+5V
f+1.24V
FE-Data-In
FE-PWM-ADC
V+
SW-RLD-LA
f+5V
SpO2-Reset
fVee
Resp-Reset Resp-Off
LL
+5V
+Clamp
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620017 G
ECG A/D and Interface
C
6 8Monday, November 04, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 172
Figure D-26. 210/220 Respiration circuit.
Respiration
DriveCircuit
B.W. = .06Hz to 16 Hz Gain =1000
B.W. =10Hz
Isolation
Barrier
U702 U703
620017.dsnRick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
5-39121 JAC 3/15/99 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet LPP LPP5-39455 4/27/99
D
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
LPP5-39821 6/24/99 LPP
5-39936
F
E LPP LPP
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup7/9/99
Buffer for ETCO2, Nurse call relay
Modify RLD to reduce V-Lead noise
Improve ESU rejection
Respiration
Diff Amp
SpO2 bypass cap, RS232 PSmods
4KV nurse call relay,ImproveCMRR for Resp Topology
G
5-44461 LPP 3/26/02
5-44857 LPP 7/18/02
JK
JK
Q70
1-g
U703-6
RespDr+
RespDr-
Q701-d
d705-c
resp-clk
C701-2
c707.1
c706.1
C702-2 D702-3
D701-3
U702-5
iso701-a
u710-6
U703-5Resp-AC
U702-2
U702-7
U702-1
u703-1
D70
5-2
U702-6
c722-1
D705-1
U70
4-3
U702-3
U70
4-6
U70
4-2
3
2
1
84
1
3
2
5
6
78
4
5
6
7
84
5
6
7
84
D12
CLK11
Q9
Q8
PR10
CL
13
1
3
2
3
2
1
84
2
3
8
6
5
D2
CLK3
Q5
Q6
PR4
CL
1
1
3
2
1
3
2
1
3
2
1
3
2
2
3
1
3
2
1
84
REV Description ECN/ECO Init Date Ckd
A Release to Production
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
C707
330pF
C717
.047uF
TP711
TP712
C715
.047uF
U702A
TL072
+
-
R729
3.16K
R720
100K
C716
.047uF
C713
0.1uF
C718
.047uF
R716
3.16K
R727
3.16K
C724
22pF
TP708 D705
MMBD354LT1
U704B
AD712
+
-
U702B
TL072
+
-
TP707
TP705
TP717
TP713
R728
3.16KTP721
U703B
AD712
+
-
TP702
U701B
74HC74
R705
2.15K
C719
4.7uF+
R711
178K
C714
.047uF
TP703
D706
MMBD1503A
U703A
AD712
+
-
U710
HCNW4503
C712
3.3uF
R713
178K
TP704
TP725
R718
825K
R717
3.16K
R710
464K
TP710
TP726
R719
51.1K
TP727
R721
316K
R722
316
R712
19.6K
U701A
74HC74
D701
MMBD1503A
R707
1.96K
D702
MMBD1503A
C701
1000pF
D703
MMBD1503A
D704
MMBD1503A
TP724
C705
0.1uF
TP720
Q701
MMBF4393L
TP723R701
31.6K
TP709
TP728
C711
0.1uF
R702
31.6K
C702
1000pF
C723
22pF R706
215
R709
464K
C706
330pF
R708
1.96K
R726
3.16K
C7220
TP706
R703
1.96K
TP718
R704
1.96K
R715
3.16K
U704A
AD712
+
-
TP714
R725
2.15K
TP722
TP719
C721
100pF
C720
.047uF
R723
1Meg
R724
196K
TP701
TP715
E E
E
E
E E
E
E
E
E
EE
E E E
E
E
ED
E
E
E
E
ED
E
fVcc
E
E
fVee
fVcc
fVcc
fVee
fVcc
fVcc
fVee
fVee
fVee
fVcc
fVee
Resp-Reset
An-Resp
-Clamp +Clamp
Right-Arm
Left-Arm
f+5V
Resp-DC
fVcc
fVee
f+5V
FE-Pwr-Sync
iso+5Vdig
iso+5Vdig
Resp-Off
+5V
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620017 G
Respiration
C
7 8Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 173
Figure D-27. 210/220 serial communication.
Serial I/O
connector
Isolation
Barrier
Isolated Supply
SerialCommunication
620017.dsnRick Myers
Rick Myers
Mar 5, 1999
Mar 5, 1999
3/15/99JAC5-39121 LPP
L. Phillips
Z. Psenicnik
J. Bello
3/16/99
3/16/99
3/16/99
B See ECN worksheet 5-39455 4/27/99LPP LPP
Improvements for ESD, RFI,
and Fast Transients, Correct
Respiration Diff-Amp Topology
D 6/24/995-39821 LPP
5-39936
F
E LPP LPP
Mods to U2 clock line, Resp
gain amp, ECG supply and
NVRAM pullup7/9/99
Buffer for ETCO2, Nurse call relay
Modify RLD to reduce V-Lead noise
Improve ESU rejection
G
SpO2 bypass cap, RS232 PS mods
4KV nurse call relay,
Improve CMR for Resp Toplogy
3/26/025-44461 LPP
LPP
JK
JK5-44857 LPP 7/18/02
iso802-a
U805-2
U805-1
ISO801-4
R815-1
U802-15
T801-1
T801-4
U802-3
Rx
U802-2
q801-e
iso803-a
rly-COM
rly-NO
Txiso803-c
T801-2
R812
-1
R803
-2
q802-b
rly-NC
U805-6
q802-e
U801-5
T801-5
U801-1
U80
1-ct
COMP5
TCAP3
IPK7
IDC8
ISWC1
ISWE2
Vcc6
GN
D4
1
3
2
2
3
8
6
5
3
1
2
2
3
8
6
5
1
3
2
16
2
5
4
1
3
2
3
1
2
61
8
732
1RA2
2RA4
3RA6
1DY3
2DY5
3DY7
1RY15
2RY13
3RY11
1DA14
2DA12
3DA10
Vd
d1
Vcc
16
Vss
8
GN
D9
1
2
3
4
5
6
7
8
Coil+1
Coil-5
CO
M1
2
N.O
.3
N.C
.4
5
8
1
2
3
4
Title
Size Document Number Rev
Date: Sheet of
Welch Allyn Inc.
Schematic:
Release For Production
Approved
Checked
Designed
Drawn
Initial Date
REV Description ECN/ECO Init Date Ckd
A Release to Production
C808
.047uF
TP806
U801
MC34063AD
D803
BAV99L
TP808
R804
511
C809
.047uF
U803
HCNW4503
Q801
MMBT3904L
C802
220pf
U804
HCNW4503
C806
.01uF
C814
680pF
TP810
TP807
R813
100
R811
6.19K
R807
6.19K
D801
BAV99L
U805
4N25
D802
BAV99L
R805
3.16K
TP809
R806
3.16K
C803
100uF+R812
215
R801
1
C813
470pf
R819 215
Q802
MMBT3904L
R802
5.11K
R810
619
C805
100uF
+
C804
100uF+
U806
TL431/SO
TP802
R817 215
U802
TL145406
C816
.047uF
R821
1Meg
C801
1uF+
J801
RJ-45
TP804
C812
680pF
R803
10K
C815
.047uF
C810
.047uF
TP805
TP801
K801
relay-JQ1-5V
R808
619
T801
IsoXfmr
TP803
R816
215
C807
470pf
R
R
R
R
R
R
R
R
R
RR
R
R
RR
R
R
R
+5V
RVcc
+5V
RVee
RS423Rx
+5V
R+5V
R+5V
RVee
R+5V RVcc
R+5V
NurseCall
RS423Tx
+Vpump
R+5V
+5V
A
A
B
B
C
C
D
D
E
E
4 4
3 3
2 2
1 1
620017 G
Serial Communication
C
8 8Monday, August 05, 2002
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 174
Figure D-28. 200/210/220 transformer isolation.
CIRCUIT SCHEMATIC
PCB
HOLE PATTERN
FEEDBACK
+ 5 V (REGULATED) @ 100 mA
7.5V ± .5V 40MA
7.5V ± .5V 40MA
4
3
2
1
+12V
8
5
+5V
PWM
B
4 3 2 1
B
C
D
A
D
C
B
A
1234
C
REL TO PROD
APPROVED
DESCRIPTIONPART NO.
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
TRANSLATED FROM:
CAD SOFTWARE:
SCALE
REVDRAWING NO.
TITLE
FINISH:
MATERIAL:
DATE
DATE
DATEDRAWN
CKDDATEINITECN/ECODESCRIPTIONREV
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
.150
.200.200
.600
.514
.815 MAX
.750 MAXMAX.710
A RELEASE TO PROD. ENG. 5-39342 JRS 4/08/99 T.W.
BNOTE 5 WAS
"INDUCTANCE : 380 uH p 10%"5-43326 RLB 10-12-01 T.W.
- -
WJM 01-Apr-99
ZIP 4/08/99 -
J. BELLO 4/08/99 -
- - TRANSFORMERISOLATIONPROE
ME10
620020 BFULL SHEET 1 of 1
NOTES:
1. MANUFACTURER: ZMAN MAGNETICBEAVERTON OREGON
2. TRANSFORMER MUST MEET UL CONSTRUCTION TECHNIQUES.
3. LABELING: THE TRANSFORMER SHALL BE LABELED, ANDINCLUDE THE FOLLOWING:
- MANUFACTURER'S NAME- WELLCH ALLYN PART NUMBER I.E. 620020- DATE CODE: YYWW (OR APPROVED ACCEPTABLE FORM)
4. SCHEMATIC AS NOTED.
5. SPECIFICATIONS:
ISOLATION CAPACITANCE: < 7.5 pFVOLTAGE BREAKDOWN : > 8 KV DCINPUT : +12 V DCOUTPUT 1 : +7.5 V þ 0.5 V @ 40 mAOUTPUT 2 : +5 V @ 100 mA (REGULATED)OUTPUT 3 : -7.5 V þ 0.5 V @ 40 mA
SWITCHING FREQUENCY : 76.8 kHZOPERATING MODE : DISCONTINUOUS
PRIMARY WINDING : PIN 5 TO PIN 8INDUCTANCE : 135 uH þ 10%RESISTANCE : 0.15 OHMS þ 15%
SECONDARY WINDING : PIN 1 TO PIN 4INDUCTANCE : 380 uH +10%/-15%RESISTANCE : 0.25 OHMS þ 15%
6. THE FOLLOWING TESTS TO BE PERFORMED ON 100% OF THE PARTS ANDWRITTEN CERTIFICATION TO BE SUPPLIED WITH EACH LOT:
A. PRIMARY INDUCTANCE (PIN 5 TO PIN 8).B. SECONDARY INDUCTANCE (PIN 1 TO PIN 4).C. TURNS RATIOl 1-4 TO 5-8.D. VOLTAGE BREAKDOWN.
7. PART TO BE A RECOGNIZED COMPONENT UNDER UL2601 OR EN60601.1 CONSTRUCTION.
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 175
Figure D-29. 200/210/220 ECG patient cable.
4
PAC
KAG
ING
3
A
A
PATIENT END
CONNECTOR END
620027-2
620027-1
PATIENT END
B
B
CABLE WIRING DIAGRAMVIEW B-B
NA
NA6
LA
LL
RA
JUMPER
WHITE
BLACK
RED
RA
LA
LL
RED (LL, 3)
4
5
2
3
1
PART#:1340PS
LOT#:X
XX
XX
X
RED (5) BLACK (LA, 2)
WHITE (RA, 1)
LLRA
LA
VIEW A-A CABLE WIRING DIAGRAM
6 SHIELD 1 WHT (RA)
2 BLK (LA)
3 RED (LL)4 BRN (C)
5 GRN (RL)
1
5
4
3
2
6
LL RED
LA BLK
C BRN
RL GRN
RA WHT
SHIELD
RA (WHT)RL (GRN)C (BRN)LL (RED)LA (BLK)
PATIENT END
RARL
CLL
LA
KEN
DA
LLP/N
:1540PSLO
T#XX
XX
XX
CONNECTOR END PATIENT END
3
3
C
C
PATIENT END
CONNECTOR END
620027-4
620027-3
PATIENT END
D
D
CABLE WIRING DIAGRAMVIEW D-D
NA
NA6
L
F
R
JUMPER
RED
YELLOW
GREEN
R
L
F
YELLOW (L, 3)
4
5
2
3
1
PART#:1340PS-I
LOT#:X
XX
XX
X
RED (5) GREEN (F, 2)
RED (R, 1)
FR
L
VIEW C-C CABLE WIRING DIAGRAM
6 SHIELD 1 RED (R)
2 YEL (L)
3 GRN (L)4 WHT (C)
5 BLK (N)
1
5
4
3
2
6
F GRN
L YEL
C WHT
N BLK
R RED
SHIELD
R (RED)N (BLK)C (WHT)F (GRN)L (YEL)
PATIENT END
RN
CF
L
KEN
DA
LLP/N
:1540PS-ILOT#X
XX
XX
X
CONNECTOR END PATIENT END
3
4 3 2 1
B
C
D
A
D
C
B
A
1234
C
REL TO PROD
APPROVED
DESCRIPTIONPART NO.
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
TRANSLATED FROM:
CAD SOFTWARE:
SCALE
REVDRAWING NO.
TITLE
FINISH:
MATERIAL:
DATE
DATE
DATEDRAWN
CKDDATEINITECN/ECODESCRIPTIONREV
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
120.00 ± 3.00120.00 ± 3.00
120.00 ± 3.00120.00 ± 3.00
CATALOGP/N
REFP/N
DESCRIPTION
620027-1 1340PS MW02500 3-LEAD; DIN STYLE SAFETY PATIENT CABLE;COLOR CODE:W,R,BL
620027-2 1540PS MW03775 5-LEAD; DIN STYLE SAFETY PATIENT CABLE;COLOR CODE:W,G,BR,R,BL
620027-3 1340PS-I 3-LEAD, DIN STYLE SAFETY PATIENT CABLEIEC COLOR CODE: R,G,Y
620027-4 1540PS-I 5-LEAD, DIN STYLE SAFETY PATIENT CABLEIEC COLOR CODE: R,B,W,G,Y
A RELEASE TO PROD. ENG. 5-39391 JRS 4/16/99 T.W.
BADD 620027-3,-4 (IEC)
CHANGE NOTES 3,45-39935 ASK 7-8-99 S.S.
- -
JB ENGEL 09-Apr-99
ZIP 4/16/99 -
J. BELLO 4/16/99 -
- - ECG PATIENTCABLEPRO E
620027 BNONE SHEET 1 of 1
NOTES:
1. CONNECTOR AND TRUNK CABLE SHALL BE 414C GRAYAND THE PATIENT END SHALL BE BLACK.
2. ELECTRICAL RESISTANCE SHALL BE BETWEEN 900 AND 1100 OHMS.
3. CABLE NAMEPLATE SHALL CONTAIN:KENDALLPART NUMBER: SEE TABLE - CATALOG P/NLOT NUMBER: XXXXXX
4. PACKAGING BAG LABEL SHALL CONTAIN:KENDALLCATALOG NUMBER: SEE TABLEPART NUMBER: SEE TABLE - REF P/NDESCRIPTION: SEE TABLEQUANTITY: 1 EACHLOT NUMBER: XXXXXX
5. CHANNEL DESIGNATIONS: RA=WHITE, LL=RED, LA=BLACK;WITH 1 K OHM RESISTORS;WIRING PER ANSI/AAMI 1983 ECG CONNECTOR STANDARD;(COMPLIANT WITH ANSI/AAMI EC53-1995 CABLE AND LEAD STANDARD)
6. CHANNEL DESIGNATIONS: RA=WHITE, RL= GREEN, C=BROWN;LL=RED, LA=BLACK; WITH 1 K OHM RESISTORS;WIRING PER ANSI/AAMI 1983 ECG CONNECTOR STANDARD;(COMPLIANT WITH ANSI/AAMI EC53-1995 CABLE AND LEAD STANDARD)
5
6
8
9
7. CABLE MUST MEET THE PERFORMANCE STANDARD FOR ELECTRODE LEAD WIRESAND PATIENT CABLES FOUND IN TITLE 21 CFR, PART 898
8. CHANNEL DESIGNATIONS: R=RED, F=GREEN, L=YELLOW;WITH 1 K OHM RESISTORS;WIRING PER ANSI/AAMI 1983 ECG CONNECTOR STANDARD;(COMPLIANT WITH ANSI/AAMI EC53-1995 CABLE AND LEAD STANDARD)
9. CHANNEL DESIGNATIONS: R=RED, N=BLACK, C=WHITE;F=GREEN, L=YELLOW; WITH 1 K OHM RESISTORS;WIRING PER ANSI/AAMI 1983 ECG CONNECTOR STANDARD;(COMPLIANT WITH ANSI/AAMI EC53-1995 CABLE AND LEAD STANDARD)
BB
B
B
B
B
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 176
Figure D-30. 200/210/220 power supply sub assy.
GROUND WIRE
NOTE FEED DIRECTION
5-6 IN-LB TORQUE
TYPICAL
EXPLODED VIEW
PARTIAL ASSEMBLY2
3
4
5
6
7
620201X1.MI
B
4 3 2 1
B
C
D
A
D
C
B
A
1234
C
REL TO PROD
APPROVED
DESCRIPTIONPART NO.
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
TRANSLATED FROM:
CAD SOFTWARE:
SCALE
REVDRAWING NO.
TITLE
FINISH:
MATERIAL:
DATE
DATE
DATEDRAWN
CKDDATEINITECN/ECODESCRIPTIONREV
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
A RELEASE TO PROD. ENG. 5-39387 JRS 4/15/99 T.W.
BREM'D FAN,TOP HSG & VIEWS W/FAN;DELETED WIRE TWIST NOTES
5-44568 CRW 5/8/02 JPK
620201-501 SUB-ASSEMBLY WITHOUT FAN
620201-502 SUB-ASSEMBLY
JB ENGEL 13-Apr-99
ZIP 4/15/99 -
J. BELLO 4/15/99 -
- - POWER SUPPLY\SUB-ASSEMBLYPRO E
ME-10
620201 BNONE SHEET 1 of 1
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 177
Figure D-31. 220 ETCO2 PCB assembly.
4
23
NOTES:
1 PRYON LC-101 GENERIC SUBASSEMBLY P/N 000.10100
2 NOMINAL LENGTH (FROM PUMP BODY T} O TUBING EXHAUST)13.4 INCHES.
3 NOMINAL LENGTH (FROM SENSOR BODY TO FEMALE LUER INLET)9.8 INCHES.
4 WATERTRAP AND WATERTRAP RECEPTAC} LE REQUIRED FOR OPERATION.
5. PACKAGING TO BE APPROVED BY WELC H ALLYN. HANDLING AND PACKAGING TOPREVENT DAMAGE DUE TO ESD, BENDI}} NG AND OTHER DAMAGE.
PUMP EXHAUST(1/16 I.D.)
SENSOR INLET
(FROM WATER TRAP RECPTACLE)
1
POWER AND COMMUNICATION
MOLEX 22-11-2042
WATER TRAP SENSE
MOLEX 22-29-2021
6. ASSY TO BE MARKED WITH MANUFACTURER'S SERIAL NUMBER.
DRAWN DATE
DATE
DATE
MATERIAL:
FINISH:
TITLE
DRAWING NO. REV
SCALE
CAD SOFTWARE:
TRANSLATED FROM:
B
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
PART NO. DESCRIPTION
APPROVED
REL TO PROD
REV DESCRIPTION ECN/ECO INIT DATE CKD
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
.832
3.150
3.900
THIS DWG -1 PRYON SERIAL #400 AND HIGHER
A RELEASE TO PROD. ENG. 5-39363 JRS 4/14/99 T.W.
B CHANGE PRYON P/N TO 000.10100 5-39549 JRS 5/5/99 T.W.
C ADDED NOTE 6, 620032 -1 5-40470 TJW 11/2/99 ASK
WJM 01-Apr-99
ZIP 4/14/99 -
J. BELLO 4/14/99 -
- - ETCO2 PCBASSEMBLYPROE
ME10
620032 CNONE SHEET 1 of 1
Serial#XXXXX PRYONC-CAP
B
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 178
Figure D-32. 200/210/220 Power supply.
NOTES:
1. SUPPLIER: CONDOR POWER SUPPLIES INC.2311 STATHAM PKWY.OXNARD, CA. 93033PART NO: GLM50-12
2. SUPPLY MUST BE APPROVED TOUL 2601 AND IEC 601-1
3. SUPPLIER REV. C OR HIGHER
C
DRAWN DATE
DATE
DATE
MATERIAL:
FINISH:
TITLE
DRAWING NO. REV
SCALE
CAD SOFTWARE:
TRANSLATED FROM:
B
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
PART NO. DESCRIPTION
APPROVED
REL TO PROD
REV DESCRIPTION ECN/ECO INIT DATE CKD
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
620150-1 REV B OR HIGHER
BSEE ECN
(REV A REL. AS EXT ITM MSTR)5-39954 ASK 7-12-99 T.W.
C REVISED SUPPLIER P.N. 5-41401 JRS 5/18/00 T.W.
ASK 12-Jul-99
ZIP 7-12-99 -
J. BELLO 7-12-99 -
- - POWER SUPPLY, 50WPRO/E
620150 CSHEET 1 of 1
PERFORMANCE SPECIFICATIONS
INPUT VOLTAGE 90 - 264 Vac
INPUT FREQUENCY 47 - 63 Hz
INPUT CURRENT (FULL LOAD) 1.6 A
OVERVOLTAGE PROTECTION 14 ±1.1 V
OUTPUT VOLTAGE 12 VDC @4.2 A
OUTPUT POWER-CONTINUOUS 50 W
OUTPUT POWER - PEAK 55 W
OPERATING TEMPERATURE 0°-50° C
EMI COMPLIANCECISPRII CLASS B(EN55011)
OUTPUT NOISE P-P 1%
J2 OUTPUT
1) OUTPUT 1 (+)
2) OUTPUT 1 (+)
3) OUTPUT 1 (+)
4) RETURN
5) RETURN
6) RETURN
J1 AC INPUT
1) LINE
2)
3) NEUTRAL
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 179
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 180
Figure D-33. Nonin SpO2 Board with Shield.
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 181
Figure D-34. Motor Stepper.
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 182
Figure D-35. Pump Pneumatic.
1 10 WIRE, 22GA, GREEN
1 9 WIRE, 22GA, BROWN
1 8 WIRE, 22GA, BLUE
1 7 WIRE, 22GA, RED
1 6 WIRE, 22GA, BLACK
1 5 WIRE, 22GA, WHITE
6 4 CONTACTS, MOLEX 08-5 0-0113
1 3 6 PIN CONNECTOR, MOL EX 22-01-3067
6 2 ECG PINS (FEMALE), A MP-66105-3
1 1 ECG CONNECTOR WA PAR T # 620102
QTY ITEM DESCRIPTION
1
2
34
5
61
2
3
4
5
6
1
2
3
4
5
6
ITEM 1 ITEM 3
A
A
SECTION A-A
NOTES:
1. ALL CONNECTORS ARE TO BE UL RECOG NIZED COMPONENTS AND CSA CERTIFIED.CONNECTOR MATERIAL SHALL HAVE FLA MMABILITY RATINGS OF 94V-2 OR BETTER .
2. WIRE SPECIFIATIONS
-TYPE U.L. 1061, CSA AWM I A/B FT1
-COLOR CODED .009 THK. (NOM) PVC INS ULATION
-TEMP RANGE: -10 ° C TO +80 ° C
-VOLTAGE RATING: 300V
-STRANDED TINNED COPPER CONDUCTOR
-RECOGNIZED COMPONENT MARK RU AND CS A MUSTAPPEAR ON SPOOL OR BE STAMPED ON WI RE
1
2
5
6
7 3
410
9
8
11
PIN 1
DRAWN DATE
DATE
DATE
MATERIAL:
FINISH:
TITLE
DRAWING NO. REV
SCALE
CAD SOFTWARE:
TRANSLATED FROM:
B
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
PART NO. DESCRIPTION
APPROVED
REL TO PROD
REV DESCRIPTION ECN/ECO INIT DATE CKD
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
±.251.75
.38
±.253.50
A RELEASE TO PRODUCTION (X2) 5-39025 JRS 2/18/99 T.W.
JB ENGEL 13-Jan-99
ZIP 2/19/99 -
J. BELLO 2/19/99 -
- - CABLE ASSYECGPE
ME10
620165 ANONE SHEET 1 of 1
1 11 SHRINK TUBE
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 183
Figure D-36. 200/210/220 ECG cable assembly.
1 6 WIRE, 22GA, YELLOW
1 5 WIRE, 22GA, ORANGE
1 4 WIRE, 22GA, RED
1 3 WIRE, 22GA, BROWN
8 2 CONTACTS, MOLEX 08-5 0-0113
2 1 4 PIN CONNECTOR, MOL EX 22-01-3047
QTY ITEM DESCRIPTION
1
2
3
4
1
2
3
4
81
6
5
4
3
7 1
2
PIN 1
PIN 1
2
NOTES:
1. ALL CONNECTORS ARE TO BE UL RECOG NIZED COMPONENTS AND CSA CERTIFIED.CONNECTOR MATERIAL SHALL HAVE FLA MMABILITY RATINGS OF 94V-2 OR BETTER .
2. WIRE SPECIFICATIONS
-TYPE U.L. 1061, CSA AWM I A/B FT1
-COLOR CODED .009 THK. (NOM) PVC INS ULATION
-TEMP RANGE: -10 ° C TO +80 ° C
-VOLTAGE RATING: 300V
-STRANDED TINNED COPPER CONDUCTOR
-RECOGNIZED COMPONENT MARK RU AND CS A MUSTAPPEAR ON SPOOL OR BE STAMPED ON WI RE
ZIP
J. BELLO
DRAWN DATE
DATE
DATE
MATERIAL:
FINISH:
TITLE
DRAWING NO. REV
SCALE
CAD SOFTWARE:
TRANSLATED FROM:
B
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
PART NO. DESCRIPTION
APPROVED
REL TO PROD
REV DESCRIPTION ECN/ECO INIT DATE CKD
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
±.124.75
±.123.75
±.12.75 ±.12.378
A RELEASE TO PRODUCTION (X2) 5-39025 JRS 2/18/99 T.W.
B CHANGE WIRE SPEC IN NOTE 2 5-39543 JRS 5/5/99 T.W.
CADD .75" IN LENGTHADD FERRITECHANGED PART # 620166-1
5-39879 JRS 6/24/99 T.W.
JB ENGEL 13-Jan-99
2/19/99 -
2/19/99 -
- - CABLE ASSYCO2PE
ME10
620166 CNONE SHEET 1 of 1
620166
620166-1 THIS DRAWING REV C AND ABOVE
1 7 SHRINK TUBE
B
SINGLE LOOP, ALL WIRESTHROUGH FERRITE
1 8 FAIR RITE P/N 2643801902
C
C C
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 184
Figure D.37. CO2 cable assembly.
SCHEMATIC10 PIN
DB9
WHITE
CABLE DRAIN/SHIELD (YELLOW)
GREEN
BLACK
RED
MIDDLE COAX
ORANGE JUMPER FROM COAX SHIELD
8
3
2
10
9
7
6
5
4
1
8
4
7
2
3
1
6
9
5
6
1 6 FAIR-RITE 2643625102
45
SECTION A-AA
A
4
23
1
PIN 1
4 5 HEAT SHRINK
1 4 COAX CABLE, BELDON#821 6
1 3 SHIELDED CABLE, CAROL# CO742 W/ DRAIN
1 2 3M CONNECTOR, 89110-0101
1 1 SPO2 CONNECTOR, AMP #7 45491-2
QTY ITEM DESCRIPTION
PIN 1
SEE DETAIL B
BRAID SHIELD CONNECTED TO 26 AWG ORANGEJUMPER WIRE VIA SOLDER BRIDGE, COVER WITHLOW TEMPERATURE SHRINK TUBING BOTHE ENDS
DRAINWIRE YELLOWSHRINKWRAPPED (BOTH ENDS)
2. CABLE ASSEMBLY TO BE 100% TESTED FOR POINT TO POINTAND SHIELD OVER SHIELD CONTINUITY.
NOTES:
1. ALL CONNECTORS ARE TO BE UL RECOG NIZED COMPONENTS AND CSA CERTIFIED.
CONNECTOR MATERIAL SHALL HAVE FLA MMABILITY RATINGS OF 94V-2 OR BETTER .
CONNECTOR REF.
SHIELD OVER SHIELD(OVERLAP SEAM)
CABLE SHIELD
HEAT SHRINK REF.
CABLE REF.
DETAIL B4 PLCS
DRAWN DATE
DATE
DATE
MATERIAL:
FINISH:
TITLE
DRAWING NO. REV
SCALE
CAD SOFTWARE:
TRANSLATED FROM:
B
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
PART NO. DESCRIPTION
APPROVED
REL TO PROD
REV DESCRIPTION ECN/ECO INIT DATE CKD
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
MAX FOR SHIELDED CABLE.130 MAX. FOR COAX.
.250
.250 STRIP
±.254.00
/.06.00
620169 THIS PART
620169-1 THIS PART REV B AND ABOVE
620169-2 THIS PART REV C AND ABOVE
A RELEASE TO PRODUCTION (X2) 5-39025 JRS 2/18/99 T.W.
B ADD FERRITE, ITEM 6CHANGED PART NO. TO 620169-1 5-39627 JRS 5/14/99 T.W.
C CHANGE CONN. TO METAL SHELLCHANGED PART NO. TO 620169-2 5-39885 JRS 6/29/99 T.W.
JB ENGEL 14-May-99
ZIP 2/18/99 -
J. BELLO 2/18/99 -
- - CABLE ASSYNELLCOR SENSORPE
ME10
620169 CNONE SHEET 1 of 1
B
B
BOTH CABLES THROUGHFERRITE - LOCATE AT MID POINT
B
C
C
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 185
Figure D-38. Nellcor sensor cable assy.
5
2
NOTES:
1. ENDS OF TUBING TO BE FLUSH TO BAR B FLANGES
SOLDER WIRE FROM ITEM 4 TO PUMP TERMINALS USING SOLDER ITEM 13.
ATTACH FAST-ONS FROM ITEM 4.
MANIFOLD ORIENTATION - HOLES FACI NG UP AS NOTED
PUMP INTAKE ORIENTATION - TUBE ON TOP SIDE AS NOTED.
4
3
FLOW DIRECTION
RED
BLACK
ORANGEWHITE
4
1
9
3
8
2
4
8 5 10
7 10
116 6
13
1
3
2
12
5
4+
-
2
REF
REF
REF
2
DRAWN DATE
DATE
DATE
MATERIAL:
FINISH:
TITLE
DRAWING NO. REV
SCALE
CAD SOFTWARE:
TRANSLATED FROM:
B
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
PART NO. DESCRIPTION
APPROVED
REL TO PROD
REV DESCRIPTION ECN/ECO INIT DATE CKD
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
620187-501 PNEUMATIC SUB-ASSEMBLY
A RELEASE TO PROD. ENG. 5-39387 JRS 4/15/99 T.W.
B REVISED ITEM NUMBERS 5-39513 TJW 5/3/99 T.W.
JB ENGEL 13-Apr-99
ZIP 4/15/99 -
J. BELLO 4/15/99 -
- - PNEUMATIC SUB-ASSYPRO EME-10
620187 BNONE SHEET 1 of 1
Welch Allyn Atlas Monitor Service Manual 6200-43E Rev D 186
Figure D-39. 200/210/220 Pneumatic sub assy.
Figure D-40. 220 CO2 cable assy.
1 6 WIRE, 22GA, YELLOW
1 5 WIRE, 22GA, ORANGE
1 4 WIRE, 22GA, RED
1 3 WIRE, 22GA, BROWN
8 2 CONTACTS, MOLEX 08-5 0-0113
2 1 4 PIN CONNECTOR, MOL EX 22-01-3047
QTY ITEM DESCRIPTION
THROUGH FERRITESINGLE LOOP, ALL WIRES
2
PIN 1
PIN 1
2
17
3
4
5
61
8
4
3
2
1
4
3
2
1
910
NOTE CATHODE
ORIENTATION
NOTES:
1. ALL CONNECTORS ARE TO BE UL RECOG NIZED COMPONENTS AND CSA CERTIFIED.
CONNECTOR MATERIAL SHALL HAVE FLA MMABILITY RATINGS OF 94V-2 OR BETTER .
2. WIRE SPECIFICATIONS
-TYPE U.L. 1061, CSA AWM I A/B FT1
-COLOR CODED .009 THK. (NOM) PVC INSULATION
-TEMP RANGE: -10 °C TO +80 ° C
-VOLTAGE RATING: 300V
-STRANDED TINNED COPPER CONDUCTOR
-RECOGNIZED COMPONENT MARK RU AND CS A MUST
APPEAR ON SPOOL OR BE STAMPED ON WI RE
CDM
J. BELLO
DRAWN DATE
DATE
DATE
MATERIAL:
FINISH:
TITLE
DRAWING NO. REV
SCALE
CAD SOFTWARE:
TRANSLATED FROM:
B
THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.
AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE
OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.
PART NO. DESCRIPTION
APPROVED
REL TO PROD
REV DESCRIPTION ECN/ECO INIT DATE CKD
TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °
UNLESS OTHERWISE SPECIFIED
DIMENSIONSARE ININCHES
R
.378±.12.75±.12
3.75±.12
4.75±.12
A RELEASE TO PRODUCTION 5-39928 JRS 7/2/99 T.W.
B CHANGE DIODE VENDOR 5-44091 RLB 1/22/02
JB ENGEL 13-Jan-99
7/2/99 -
7/2/99 -
- - CABLE ASSYCO2PE
ME10
620524 BNONE SHEET 1 of 1
1 7 SHRINK TUBE
1 8 FAIR RITE P/N 2643801902
1 9 DIODE,VISHAY TELEFUNKEN P/N IN4148
1 10 CLEAR HEAT SHRINK
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 187
Calibration Date Number of Days Calibration Date Number of DaysTable E-1. Calibration Date Table.
1/1/2003 18261/2/2003 18271/3/2003 18281/4/2003 18291/5/2003 18301/6/2003 18311/7/2003 18321/8/2003 18331/9/2003 1834
1/10/2003 18351/11/2003 18361/12/2003 18371/13/2003 18381/14/2003 18391/15/2003 18401/16/2003 18411/17/2003 18421/18/2003 18431/19/2003 18441/20/2003 18451/21/2003 18461/22/2003 18471/23/2003 18481/24/2003 18491/25/2003 18501/26/2003 18511/27/2003 18521/28/2003 18531/29/2003 18541/30/2003 18551/31/2003 18562/1/2003 18572/2/2003 18582/3/2003 18592/4/2003 18602/5/2003 18612/6/2003 18622/7/2003 18632/8/2003 18642/9/2003 1865
2/10/2003 18662/11/2003 18672/12/2003 18682/13/2003 18692/14/2003 18702/15/2003 18712/16/2003 18722/17/2003 18732/18/2003 18742/19/2003 18752/20/2003 18762/21/2003 18772/22/2003 18782/23/2003 18792/24/2003 18802/25/2003 18812/26/2003 18822/27/2003 18832/28/2003 18843/1/2003 18853/2/2003 18863/3/2003 18873/4/2003 18883/5/2003 18893/6/2003 18903/7/2003 18913/8/2003 18923/9/2003 1893
3/10/2003 18943/11/2003 18953/12/2003 18963/13/2003 18973/14/2003 18983/15/2003 18993/16/2003 19003/17/2003 19013/18/2003 19023/19/2003 19033/20/2003 19043/21/2003 19053/22/2003 1906
188 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
3/23/2003 19073/24/2003 19083/25/2003 19093/26/2003 19103/27/2003 19113/28/2003 19123/29/2003 19133/30/2003 19143/31/2003 19154/1/2003 19164/2/2003 19174/3/2003 19184/4/2003 19194/5/2003 19204/6/2003 19214/7/2003 19224/8/2003 19234/9/2003 1924
4/10/2003 19254/11/2003 19264/12/2003 19274/13/2003 19284/14/2003 19294/15/2003 19304/16/2003 19314/17/2003 19324/18/2003 19334/19/2003 19344/20/2003 19354/21/2003 19364/22/2003 19374/23/2003 19384/24/2003 19394/25/2003 19404/26/2003 19414/27/2003 19424/28/2003 19434/29/2003 19444/30/2003 19455/1/2003 19465/2/2003 1947
5/3/2003 19485/4/2003 19495/5/2003 19505/6/2003 19515/7/2003 19525/8/2003 19535/9/2003 1954
5/10/2003 19555/11/2003 19565/12/2003 19575/13/2003 19585/14/2003 19595/15/2003 19605/16/2003 19615/17/2003 19625/18/2003 19635/19/2003 19645/20/2003 19655/21/2003 19665/22/2003 19675/23/2003 19685/24/2003 19695/25/2003 19705/26/2003 19715/27/2003 19725/28/2003 19735/29/2003 19745/30/2003 19755/31/2003 19766/1/2003 19776/2/2003 19786/3/2003 19796/4/2003 19806/5/2003 19816/6/2003 19826/7/2003 19836/8/2003 19846/9/2003 1985
6/10/2003 19866/11/2003 19876/12/2003 1988
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 189
Calibration Date Number of Days Calibration Date Number of Days
6/13/2003 19896/14/2003 19906/15/2003 19916/16/2003 19926/17/2003 19936/18/2003 19946/19/2003 19956/20/2003 19966/21/2003 19976/22/2003 19986/23/2003 19996/24/2003 20006/25/2003 20016/26/2003 20026/27/2003 20036/28/2003 20046/29/2003 20056/30/2003 20067/1/2003 20077/2/2003 20087/3/2003 20097/4/2003 20107/5/2003 20117/6/2003 20127/7/2003 20137/8/2003 20147/9/2003 2015
7/10/2003 20167/11/2003 20177/12/2003 20187/13/2003 20197/14/2003 20207/15/2003 20217/16/2003 20227/17/2003 20237/18/2003 20247/19/2003 20257/20/2003 20267/21/2003 20277/22/2003 20287/23/2003 2029
7/24/2003 20307/25/2003 20317/26/2003 20327/27/2003 20337/28/2003 20347/29/2003 20357/30/2003 20367/31/2003 20378/1/2003 20388/2/2003 20398/3/2003 20408/4/2003 20418/5/2003 20428/6/2003 20438/7/2003 20448/8/2003 20458/9/2003 2046
8/10/2003 20478/11/2003 20488/12/2003 20498/13/2003 20508/14/2003 20518/15/2003 20528/16/2003 20538/17/2003 20548/18/2003 20558/19/2003 20568/20/2003 20578/21/2003 20588/22/2003 20598/23/2003 20608/24/2003 20618/25/2003 20628/26/2003 20638/27/2003 20648/28/2003 20658/29/2003 20668/30/2003 20678/31/2003 20689/1/2003 20699/2/2003 2070
190 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
9/3/2003 20719/4/2003 20729/5/2003 20739/6/2003 20749/7/2003 20759/8/2003 20769/9/2003 2077
9/10/2003 20789/11/2003 20799/12/2003 20809/13/2003 20819/14/2003 20829/15/2003 20839/16/2003 20849/17/2003 20859/18/2003 20869/19/2003 20879/20/2003 20889/21/2003 20899/22/2003 20909/23/2003 20919/24/2003 20929/25/2003 20939/26/2003 20949/27/2003 20959/28/2003 20969/29/2003 20979/30/2003 209810/1/2003 209910/2/2003 210010/3/2003 210110/4/2003 210210/5/2003 210310/6/2003 210410/7/2003 210510/8/2003 210610/9/2003 2107
10/10/2003 210810/11/2003 210910/12/2003 211010/13/2003 2111
10/14/2003 211210/15/2003 211310/16/2003 211410/17/2003 211510/18/2003 211610/19/2003 211710/20/2003 211810/21/2003 211910/22/2003 212010/23/2003 212110/24/2003 212210/25/2003 212310/26/2003 212410/27/2003 212510/28/2003 212610/29/2003 212710/30/2003 212810/31/2003 2129
11/1/2003 213011/2/2003 213111/3/2003 213211/4/2003 213311/5/2003 213411/6/2003 213511/7/2003 213611/8/2003 213711/9/2003 2138
11/10/2003 213911/11/2003 214011/12/2003 214111/13/2003 214211/14/2003 214311/15/2003 214411/16/2003 214511/17/2003 214611/18/2003 214711/19/2003 214811/20/2003 214911/21/2003 215011/22/2003 215111/23/2003 2152
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 191
Calibration Date Number of Days Calibration Date Number of Days
11/24/2003 215311/25/2003 215411/26/2003 215511/27/2003 215611/28/2003 215711/29/2003 215811/30/2003 215912/1/2003 216012/2/2003 216112/3/2003 216212/4/2003 216312/5/2003 216412/6/2003 216512/7/2003 216612/8/2003 216712/9/2003 2168
12/10/2003 216912/11/2003 217012/12/2003 217112/13/2003 217212/14/2003 217312/15/2003 217412/16/2003 217512/17/2003 217612/18/2003 217712/19/2003 217812/20/2003 217912/21/2003 218012/22/2003 218112/23/2003 218212/24/2003 218312/25/2003 218412/26/2003 218512/27/2003 218612/28/2003 218712/29/2003 218812/30/2003 218912/31/2003 2190
1/1/2004 21911/2/2004 21921/3/2004 2193
1/4/2004 21941/5/2004 21951/6/2004 21961/7/2004 21971/8/2004 21981/9/2004 2199
1/10/2004 22001/11/2004 22011/12/2004 22021/13/2004 22031/14/2004 22041/15/2004 22051/16/2004 22061/17/2004 22071/18/2004 22081/19/2004 22091/20/2004 22101/21/2004 22111/22/2004 22121/23/2004 22131/24/2004 22141/25/2004 22151/26/2004 22161/27/2004 22171/28/2004 22181/29/2004 22191/30/2004 22201/31/2004 22212/1/2004 22222/2/2004 22232/3/2004 22242/4/2004 22252/5/2004 22262/6/2004 22272/7/2004 22282/8/2004 22292/9/2004 2230
2/10/2004 22312/11/2004 22322/12/2004 22332/13/2004 2234
192 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
2/14/2004 22352/15/2004 22362/16/2004 22372/17/2004 22382/18/2004 22392/19/2004 22402/20/2004 22412/21/2004 22422/22/2004 22432/23/2004 22442/24/2004 22452/25/2004 22462/26/2004 22472/27/2004 22482/28/2004 22492/29/2004 22503/1/2004 22513/2/2004 22523/3/2004 22533/4/2004 22543/5/2004 22553/6/2004 22563/7/2004 22573/8/2004 22583/9/2004 2259
3/10/2004 22603/11/2004 22613/12/2004 22623/13/2004 22633/14/2004 22643/15/2004 22653/16/2004 22663/17/2004 22673/18/2004 22683/19/2004 22693/20/2004 22703/21/2004 22713/22/2004 22723/23/2004 22733/24/2004 22743/25/2004 2275
3/26/2004 22763/27/2004 22773/28/2004 22783/29/2004 22793/30/2004 22803/31/2004 22814/1/2004 22824/2/2004 22834/3/2004 22844/4/2004 22854/5/2004 22864/6/2004 22874/7/2004 22884/8/2004 22894/9/2004 2290
4/10/2004 22914/11/2004 22924/12/2004 22934/13/2004 22944/14/2004 22954/15/2004 22964/16/2004 22974/17/2004 22984/18/2004 22994/19/2004 23004/20/2004 23014/21/2004 23024/22/2004 23034/23/2004 23044/24/2004 23054/25/2004 23064/26/2004 23074/27/2004 23084/28/2004 23094/29/2004 23104/30/2004 23115/1/2004 23125/2/2004 23135/3/2004 23145/4/2004 23155/5/2004 2316
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 193
Calibration Date Number of Days Calibration Date Number of Days
5/6/2004 23175/7/2004 23185/8/2004 23195/9/2004 2320
5/10/2004 23215/11/2004 23225/12/2004 23235/13/2004 23245/14/2004 23255/15/2004 23265/16/2004 23275/17/2004 23285/18/2004 23295/19/2004 23305/20/2004 23315/21/2004 23325/22/2004 23335/23/2004 23345/24/2004 23355/25/2004 23365/26/2004 23375/27/2004 23385/28/2004 23395/29/2004 23405/30/2004 23415/31/2004 23426/1/2004 23436/2/2004 23446/3/2004 23456/4/2004 23466/5/2004 23476/6/2004 23486/7/2004 23496/8/2004 23506/9/2004 2351
6/10/2004 23526/11/2004 23536/12/2004 23546/13/2004 23556/14/2004 23566/15/2004 2357
6/16/2004 23586/17/2004 23596/18/2004 23606/19/2004 23616/20/2004 23626/21/2004 23636/22/2004 23646/23/2004 23656/24/2004 23666/25/2004 23676/26/2004 23686/27/2004 23696/28/2004 23706/29/2004 23716/30/2004 23727/1/2004 23737/2/2004 23747/3/2004 23757/4/2004 23767/5/2004 23777/6/2004 23787/7/2004 23797/8/2004 23807/9/2004 2381
7/10/2004 23827/11/2004 23837/12/2004 23847/13/2004 23857/14/2004 23867/15/2004 23877/16/2004 23887/17/2004 23897/18/2004 23907/19/2004 23917/20/2004 23927/21/2004 23937/22/2004 23947/23/2004 23957/24/2004 23967/25/2004 23977/26/2004 2398
194 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
7/27/2004 23997/28/2004 24007/29/2004 24017/30/2004 24027/31/2004 24038/1/2004 24048/2/2004 24058/3/2004 24068/4/2004 24078/5/2004 24088/6/2004 24098/7/2004 24108/8/2004 24118/9/2004 2412
8/10/2004 24138/11/2004 24148/12/2004 24158/13/2004 24168/14/2004 24178/15/2004 24188/16/2004 24198/17/2004 24208/18/2004 24218/19/2004 24228/20/2004 24238/21/2004 24248/22/2004 24258/23/2004 24268/24/2004 24278/25/2004 24288/26/2004 24298/27/2004 24308/28/2004 24318/29/2004 24328/30/2004 24338/31/2004 24349/1/2004 24359/2/2004 24369/3/2004 24379/4/2004 24389/5/2004 2439
9/6/2004 24409/7/2004 24419/8/2004 24429/9/2004 2443
9/10/2004 24449/11/2004 24459/12/2004 24469/13/2004 24479/14/2004 24489/15/2004 24499/16/2004 24509/17/2004 24519/18/2004 24529/19/2004 24539/20/2004 24549/21/2004 24559/22/2004 24569/23/2004 24579/24/2004 24589/25/2004 24599/26/2004 24609/27/2004 24619/28/2004 24629/29/2004 24639/30/2004 246410/1/2004 246510/2/2004 246610/3/2004 246710/4/2004 246810/5/2004 246910/6/2004 247010/7/2004 247110/8/2004 247210/9/2004 2473
10/10/2004 247410/11/2004 247510/12/2004 247610/13/2004 247710/14/2004 247810/15/2004 247910/16/2004 2480
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 195
Calibration Date Number of Days Calibration Date Number of Days
10/17/2004 248110/18/2004 248210/19/2004 248310/20/2004 248410/21/2004 248510/22/2004 248610/23/2004 248710/24/2004 248810/25/2004 248910/26/2004 249010/27/2004 249110/28/2004 249210/29/2004 249310/30/2004 249410/31/2004 249511/1/2004 249611/2/2004 249711/3/2004 249811/4/2004 249911/5/2004 250011/6/2004 250111/7/2004 250211/8/2004 250311/9/2004 2504
11/10/2004 250511/11/2004 250611/12/2004 250711/13/2004 250811/14/2004 250911/15/2004 251011/16/2004 251111/17/2004 251211/18/2004 251311/19/2004 251411/20/2004 251511/21/2004 251611/22/2004 251711/23/2004 251811/24/2004 251911/25/2004 252011/26/2004 2521
11/27/2004 252211/28/2004 252311/29/2004 252411/30/2004 252512/1/2004 252612/2/2004 252712/3/2004 252812/4/2004 252912/5/2004 253012/6/2004 253112/7/2004 253212/8/2004 253312/9/2004 2534
12/10/2004 253512/11/2004 253612/12/2004 253712/13/2004 253812/14/2004 253912/15/2004 254012/16/2004 254112/17/2004 254212/18/2004 254312/19/2004 254412/20/2004 254512/21/2004 254612/22/2004 254712/23/2004 254812/24/2004 254912/25/2004 255012/26/2004 255112/27/2004 255212/28/2004 255312/29/2004 255412/30/2004 255512/31/2004 2556
1/1/2005 25571/2/2005 25581/3/2005 25591/4/2005 25601/5/2005 25611/6/2005 2562
196 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
1/7/2005 25631/8/2005 25641/9/2005 2565
1/10/2005 25661/11/2005 25671/12/2005 25681/13/2005 25691/14/2005 25701/15/2005 25711/16/2005 25721/17/2005 25731/18/2005 25741/19/2005 25751/20/2005 25761/21/2005 25771/22/2005 25781/23/2005 25791/24/2005 25801/25/2005 25811/26/2005 25821/27/2005 25831/28/2005 25841/29/2005 25851/30/2005 25861/31/2005 25872/1/2005 25882/2/2005 25892/3/2005 25902/4/2005 25912/5/2005 25922/6/2005 25932/7/2005 25942/8/2005 25952/9/2005 2596
2/10/2005 25972/11/2005 25982/12/2005 25992/13/2005 26002/14/2005 26012/15/2005 26022/16/2005 2603
2/17/2005 26042/18/2005 26052/19/2005 26062/20/2005 26072/21/2005 26082/22/2005 26092/23/2005 26102/24/2005 26112/25/2005 26122/26/2005 26132/27/2005 26142/28/2005 26153/1/2005 26163/2/2005 26173/3/2005 26183/4/2005 26193/5/2005 26203/6/2005 26213/7/2005 26223/8/2005 26233/9/2005 2624
3/10/2005 26253/11/2005 26263/12/2005 26273/13/2005 26283/14/2005 26293/15/2005 26303/16/2005 26313/17/2005 26323/18/2005 26333/19/2005 26343/20/2005 26353/21/2005 26363/22/2005 26373/23/2005 26383/24/2005 26393/25/2005 26403/26/2005 26413/27/2005 26423/28/2005 26433/29/2005 2644
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 197
Calibration Date Number of Days Calibration Date Number of Days
3/30/2005 26453/31/2005 26464/1/2005 26474/2/2005 26484/3/2005 26494/4/2005 26504/5/2005 26514/6/2005 26524/7/2005 26534/8/2005 26544/9/2005 2655
4/10/2005 26564/11/2005 26574/12/2005 26584/13/2005 26594/14/2005 26604/15/2005 26614/16/2005 26624/17/2005 26634/18/2005 26644/19/2005 26654/20/2005 26664/21/2005 26674/22/2005 26684/23/2005 26694/24/2005 26704/25/2005 26714/26/2005 26724/27/2005 26734/28/2005 26744/29/2005 26754/30/2005 26765/1/2005 26775/2/2005 26785/3/2005 26795/4/2005 26805/5/2005 26815/6/2005 26825/7/2005 26835/8/2005 26845/9/2005 2685
5/10/2005 26865/11/2005 26875/12/2005 26885/13/2005 26895/14/2005 26905/15/2005 26915/16/2005 26925/17/2005 26935/18/2005 26945/19/2005 26955/20/2005 26965/21/2005 26975/22/2005 26985/23/2005 26995/24/2005 27005/25/2005 27015/26/2005 27025/27/2005 27035/28/2005 27045/29/2005 27055/30/2005 27065/31/2005 27076/1/2005 27086/2/2005 27096/3/2005 27106/4/2005 27116/5/2005 27126/6/2005 27136/7/2005 27146/8/2005 27156/9/2005 2716
6/10/2005 27176/11/2005 27186/12/2005 27196/13/2005 27206/14/2005 27216/15/2005 27226/16/2005 27236/17/2005 27246/18/2005 27256/19/2005 2726
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Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
6/20/2005 27276/21/2005 27286/22/2005 27296/23/2005 27306/24/2005 27316/25/2005 27326/26/2005 27336/27/2005 27346/28/2005 27356/29/2005 27366/30/2005 27377/1/2005 27387/2/2005 27397/3/2005 27407/4/2005 27417/5/2005 27427/6/2005 27437/7/2005 27447/8/2005 27457/9/2005 2746
7/10/2005 27477/11/2005 27487/12/2005 27497/13/2005 27507/14/2005 27517/15/2005 27527/16/2005 27537/17/2005 27547/18/2005 27557/19/2005 27567/20/2005 27577/21/2005 27587/22/2005 27597/23/2005 27607/24/2005 27617/25/2005 27627/26/2005 27637/27/2005 27647/28/2005 27657/29/2005 27667/30/2005 2767
7/31/2005 27688/1/2005 27698/2/2005 27708/3/2005 27718/4/2005 27728/5/2005 27738/6/2005 27748/7/2005 27758/8/2005 27768/9/2005 2777
8/10/2005 27788/11/2005 27798/12/2005 27808/13/2005 27818/14/2005 27828/15/2005 27838/16/2005 27848/17/2005 27858/18/2005 27868/19/2005 27878/20/2005 27888/21/2005 27898/22/2005 27908/23/2005 27918/24/2005 27928/25/2005 27938/26/2005 27948/27/2005 27958/28/2005 27968/29/2005 27978/30/2005 27988/31/2005 27999/1/2005 28009/2/2005 28019/3/2005 28029/4/2005 28039/5/2005 28049/6/2005 28059/7/2005 28069/8/2005 28079/9/2005 2808
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 199
Calibration Date Number of Days Calibration Date Number of Days
9/10/2005 28099/11/2005 28109/12/2005 28119/13/2005 28129/14/2005 28139/15/2005 28149/16/2005 28159/17/2005 28169/18/2005 28179/19/2005 28189/20/2005 28199/21/2005 28209/22/2005 28219/23/2005 28229/24/2005 28239/25/2005 28249/26/2005 28259/27/2005 28269/28/2005 28279/29/2005 28289/30/2005 282910/1/2005 283010/2/2005 283110/3/2005 283210/4/2005 283310/5/2005 283410/6/2005 283510/7/2005 283610/8/2005 283710/9/2005 2838
10/10/2005 283910/11/2005 284010/12/2005 284110/13/2005 284210/14/2005 284310/15/2005 284410/16/2005 284510/17/2005 284610/18/2005 284710/19/2005 284810/20/2005 2849
10/21/2005 285010/22/2005 285110/23/2005 285210/24/2005 285310/25/2005 285410/26/2005 285510/27/2005 285610/28/2005 285710/29/2005 285810/30/2005 285910/31/2005 286011/1/2005 286111/2/2005 286211/3/2005 286311/4/2005 286411/5/2005 286511/6/2005 286611/7/2005 286711/8/2005 286811/9/2005 2869
11/10/2005 287011/11/2005 287111/12/2005 287211/13/2005 287311/14/2005 287411/15/2005 287511/16/2005 287611/17/2005 287711/18/2005 287811/19/2005 287911/20/2005 288011/21/2005 288111/22/2005 288211/23/2005 288311/24/2005 288411/25/2005 288511/26/2005 288611/27/2005 288711/28/2005 288811/29/2005 288911/30/2005 2890
200 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
12/1/2005 289112/2/2005 289212/3/2005 289312/4/2005 289412/5/2005 289512/6/2005 289612/7/2005 289712/8/2005 289812/9/2005 2899
12/10/2005 290012/11/2005 290112/12/2005 290212/13/2005 290312/14/2005 290412/15/2005 290512/16/2005 290612/17/2005 290712/18/2005 290812/19/2005 290912/20/2005 291012/21/2005 291112/22/2005 291212/23/2005 291312/24/2005 291412/25/2005 291512/26/2005 291612/27/2005 291712/28/2005 291812/29/2005 291912/30/2005 292012/31/2005 2921
1/1/2006 29221/2/2006 29231/3/2006 29241/4/2006 29251/5/2006 29261/6/2006 29271/7/2006 29281/8/2006 29291/9/2006 2930
1/10/2006 2931
1/11/2006 29321/12/2006 29331/13/2006 29341/14/2006 29351/15/2006 29361/16/2006 29371/17/2006 29381/18/2006 29391/19/2006 29401/20/2006 29411/21/2006 29421/22/2006 29431/23/2006 29441/24/2006 29451/25/2006 29461/26/2006 29471/27/2006 29481/28/2006 29491/29/2006 29501/30/2006 29511/31/2006 29522/1/2006 29532/2/2006 29542/3/2006 29552/4/2006 29562/5/2006 29572/6/2006 29582/7/2006 29592/8/2006 29602/9/2006 2961
2/10/2006 29622/11/2006 29632/12/2006 29642/13/2006 29652/14/2006 29662/15/2006 29672/16/2006 29682/17/2006 29692/18/2006 29702/19/2006 29712/20/2006 2972
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 201
Calibration Date Number of Days Calibration Date Number of Days
2/21/2006 29732/22/2006 29742/23/2006 29752/24/2006 29762/25/2006 29772/26/2006 29782/27/2006 29792/28/2006 29803/1/2006 29813/2/2006 29823/3/2006 29833/4/2006 29843/5/2006 29853/6/2006 29863/7/2006 29873/8/2006 29883/9/2006 2989
3/10/2006 29903/11/2006 29913/12/2006 29923/13/2006 29933/14/2006 29943/15/2006 29953/16/2006 29963/17/2006 29973/18/2006 29983/19/2006 29993/20/2006 30003/21/2006 30013/22/2006 30023/23/2006 30033/24/2006 30043/25/2006 30053/26/2006 30063/27/2006 30073/28/2006 30083/29/2006 30093/30/2006 30103/31/2006 30114/1/2006 30124/2/2006 3013
4/3/2006 30144/4/2006 30154/5/2006 30164/6/2006 30174/7/2006 30184/8/2006 30194/9/2006 3020
4/10/2006 30214/11/2006 30224/12/2006 30234/13/2006 30244/14/2006 30254/15/2006 30264/16/2006 30274/17/2006 30284/18/2006 30294/19/2006 30304/20/2006 30314/21/2006 30324/22/2006 30334/23/2006 30344/24/2006 30354/25/2006 30364/26/2006 30374/27/2006 30384/28/2006 30394/29/2006 30404/30/2006 30415/1/2006 30425/2/2006 30435/3/2006 30445/4/2006 30455/5/2006 30465/6/2006 30475/7/2006 30485/8/2006 30495/9/2006 3050
5/10/2006 30515/11/2006 30525/12/2006 30535/13/2006 3054
202 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
5/14/2006 30555/15/2006 30565/16/2006 30575/17/2006 30585/18/2006 30595/19/2006 30605/20/2006 30615/21/2006 30625/22/2006 30635/23/2006 30645/24/2006 30655/25/2006 30665/26/2006 30675/27/2006 30685/28/2006 30695/29/2006 30705/30/2006 30715/31/2006 30726/1/2006 30736/2/2006 30746/3/2006 30756/4/2006 30766/5/2006 30776/6/2006 30786/7/2006 30796/8/2006 30806/9/2006 3081
6/10/2006 30826/11/2006 30836/12/2006 30846/13/2006 30856/14/2006 30866/15/2006 30876/16/2006 30886/17/2006 30896/18/2006 30906/19/2006 30916/20/2006 30926/21/2006 30936/22/2006 30946/23/2006 3095
6/24/2006 30966/25/2006 30976/26/2006 30986/27/2006 30996/28/2006 31006/29/2006 31016/30/2006 31027/1/2006 31037/2/2006 31047/3/2006 31057/4/2006 31067/5/2006 31077/6/2006 31087/7/2006 31097/8/2006 31107/9/2006 3111
7/10/2006 31127/11/2006 31137/12/2006 31147/13/2006 31157/14/2006 31167/15/2006 31177/16/2006 31187/17/2006 31197/18/2006 31207/19/2006 31217/20/2006 31227/21/2006 31237/22/2006 31247/23/2006 31257/24/2006 31267/25/2006 31277/26/2006 31287/27/2006 31297/28/2006 31307/29/2006 31317/30/2006 31327/31/2006 31338/1/2006 31348/2/2006 31358/3/2006 3136
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 203
Calibration Date Number of Days Calibration Date Number of Days
8/4/2006 31378/5/2006 31388/6/2006 31398/7/2006 31408/8/2006 31418/9/2006 3142
8/10/2006 31438/11/2006 31448/12/2006 31458/13/2006 31468/14/2006 31478/15/2006 31488/16/2006 31498/17/2006 31508/18/2006 31518/19/2006 31528/20/2006 31538/21/2006 31548/22/2006 31558/23/2006 31568/24/2006 31578/25/2006 31588/26/2006 31598/27/2006 31608/28/2006 31618/29/2006 31628/30/2006 31638/31/2006 31649/1/2006 31659/2/2006 31669/3/2006 31679/4/2006 31689/5/2006 31699/6/2006 31709/7/2006 31719/8/2006 31729/9/2006 3173
9/10/2006 31749/11/2006 31759/12/2006 31769/13/2006 3177
9/14/2006 31789/15/2006 31799/16/2006 31809/17/2006 31819/18/2006 31829/19/2006 31839/20/2006 31849/21/2006 31859/22/2006 31869/23/2006 31879/24/2006 31889/25/2006 31899/26/2006 31909/27/2006 31919/28/2006 31929/29/2006 31939/30/2006 319410/1/2006 319510/2/2006 319610/3/2006 319710/4/2006 319810/5/2006 319910/6/2006 320010/7/2006 320110/8/2006 320210/9/2006 3203
10/10/2006 320410/11/2006 320510/12/2006 320610/13/2006 320710/14/2006 320810/15/2006 320910/16/2006 321010/17/2006 321110/18/2006 321210/19/2006 321310/20/2006 321410/21/2006 321510/22/2006 321610/23/2006 321710/24/2006 3218
204 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
10/25/2006 321910/26/2006 322010/27/2006 322110/28/2006 322210/29/2006 322310/30/2006 322410/31/2006 322511/1/2006 322611/2/2006 322711/3/2006 322811/4/2006 322911/5/2006 323011/6/2006 323111/7/2006 323211/8/2006 323311/9/2006 3234
11/10/2006 323511/11/2006 323611/12/2006 323711/13/2006 323811/14/2006 323911/15/2006 324011/16/2006 324111/17/2006 324211/18/2006 324311/19/2006 324411/20/2006 324511/21/2006 324611/22/2006 324711/23/2006 324811/24/2006 324911/25/2006 325011/26/2006 325111/27/2006 325211/28/2006 325311/29/2006 325411/30/2006 325512/1/2006 325612/2/2006 325712/3/2006 325812/4/2006 3259
12/5/2006 326012/6/2006 326112/7/2006 326212/8/2006 326312/9/2006 3264
12/10/2006 326512/11/2006 326612/12/2006 326712/13/2006 326812/14/2006 326912/15/2006 327012/16/2006 327112/17/2006 327212/18/2006 327312/19/2006 327412/20/2006 327512/21/2006 327612/22/2006 327712/23/2006 327812/24/2006 327912/25/2006 328012/26/2006 328112/27/2006 328212/28/2006 328312/29/2006 328412/30/2006 328512/31/2006 3286
1/1/2007 32871/2/2007 32881/3/2007 32891/4/2007 32901/5/2007 32911/6/2007 32921/7/2007 32931/8/2007 32941/9/2007 3295
1/10/2007 32961/11/2007 32971/12/2007 32981/13/2007 32991/14/2007 3300
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 205
Calibration Date Number of Days Calibration Date Number of Days
1/15/2007 33011/16/2007 33021/17/2007 33031/18/2007 33041/19/2007 33051/20/2007 33061/21/2007 33071/22/2007 33081/23/2007 33091/24/2007 33101/25/2007 33111/26/2007 33121/27/2007 33131/28/2007 33141/29/2007 33151/30/2007 33161/31/2007 33172/1/2007 33182/2/2007 33192/3/2007 33202/4/2007 33212/5/2007 33222/6/2007 33232/7/2007 33242/8/2007 33252/9/2007 3326
2/10/2007 33272/11/2007 33282/12/2007 33292/13/2007 33302/14/2007 33312/15/2007 33322/16/2007 33332/17/2007 33342/18/2007 33352/19/2007 33362/20/2007 33372/21/2007 33382/22/2007 33392/23/2007 33402/24/2007 3341
2/25/2007 33422/26/2007 33432/27/2007 33442/28/2007 33453/1/2007 33463/2/2007 33473/3/2007 33483/4/2007 33493/5/2007 33503/6/2007 33513/7/2007 33523/8/2007 33533/9/2007 3354
3/10/2007 33553/11/2007 33563/12/2007 33573/13/2007 33583/14/2007 33593/15/2007 33603/16/2007 33613/17/2007 33623/18/2007 33633/19/2007 33643/20/2007 33653/21/2007 33663/22/2007 33673/23/2007 33683/24/2007 33693/25/2007 33703/26/2007 33713/27/2007 33723/28/2007 33733/29/2007 33743/30/2007 33753/31/2007 33764/1/2007 33774/2/2007 33784/3/2007 33794/4/2007 33804/5/2007 33814/6/2007 3382
206 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
4/7/2007 33834/8/2007 33844/9/2007 3385
4/10/2007 33864/11/2007 33874/12/2007 33884/13/2007 33894/14/2007 33904/15/2007 33914/16/2007 33924/17/2007 33934/18/2007 33944/19/2007 33954/20/2007 33964/21/2007 33974/22/2007 33984/23/2007 33994/24/2007 34004/25/2007 34014/26/2007 34024/27/2007 34034/28/2007 34044/29/2007 34054/30/2007 34065/1/2007 34075/2/2007 34085/3/2007 34095/4/2007 34105/5/2007 34115/6/2007 34125/7/2007 34135/8/2007 34145/9/2007 3415
5/10/2007 34165/11/2007 34175/12/2007 34185/13/2007 34195/14/2007 34205/15/2007 34215/16/2007 34225/17/2007 3423
5/18/2007 34245/19/2007 34255/20/2007 34265/21/2007 34275/22/2007 34285/23/2007 34295/24/2007 34305/25/2007 34315/26/2007 34325/27/2007 34335/28/2007 34345/29/2007 34355/30/2007 34365/31/2007 34376/1/2007 34386/2/2007 34396/3/2007 34406/4/2007 34416/5/2007 34426/6/2007 34436/7/2007 34446/8/2007 34456/9/2007 3446
6/10/2007 34476/11/2007 34486/12/2007 34496/13/2007 34506/14/2007 34516/15/2007 34526/16/2007 34536/17/2007 34546/18/2007 34556/19/2007 34566/20/2007 34576/21/2007 34586/22/2007 34596/23/2007 34606/24/2007 34616/25/2007 34626/26/2007 34636/27/2007 3464
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 207
Calibration Date Number of Days Calibration Date Number of Days
6/28/2007 34656/29/2007 34666/30/2007 34677/1/2007 34687/2/2007 34697/3/2007 34707/4/2007 34717/5/2007 34727/6/2007 34737/7/2007 34747/8/2007 34757/9/2007 3476
7/10/2007 34777/11/2007 34787/12/2007 34797/13/2007 34807/14/2007 34817/15/2007 34827/16/2007 34837/17/2007 34847/18/2007 34857/19/2007 34867/20/2007 34877/21/2007 34887/22/2007 34897/23/2007 34907/24/2007 34917/25/2007 34927/26/2007 34937/27/2007 34947/28/2007 34957/29/2007 34967/30/2007 34977/31/2007 34988/1/2007 34998/2/2007 35008/3/2007 35018/4/2007 35028/5/2007 35038/6/2007 35048/7/2007 3505
8/8/2007 35068/9/2007 3507
8/10/2007 35088/11/2007 35098/12/2007 35108/13/2007 35118/14/2007 35128/15/2007 35138/16/2007 35148/17/2007 35158/18/2007 35168/19/2007 35178/20/2007 35188/21/2007 35198/22/2007 35208/23/2007 35218/24/2007 35228/25/2007 35238/26/2007 35248/27/2007 35258/28/2007 35268/29/2007 35278/30/2007 35288/31/2007 35299/1/2007 35309/2/2007 35319/3/2007 35329/4/2007 35339/5/2007 35349/6/2007 35359/7/2007 35369/8/2007 35379/9/2007 3538
9/10/2007 35399/11/2007 35409/12/2007 35419/13/2007 35429/14/2007 35439/15/2007 35449/16/2007 35459/17/2007 3546
208 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix E Calibration Date Table
Calibration Date Number of Days Calibration Date Number of Days
9/18/2007 35479/19/2007 35489/20/2007 35499/21/2007 35509/22/2007 35519/23/2007 35529/24/2007 35539/25/2007 35549/26/2007 35559/27/2007 35569/28/2007 35579/29/2007 35589/30/2007 355910/1/2007 356010/2/2007 356110/3/2007 356210/4/2007 356310/5/2007 356410/6/2007 356510/7/2007 356610/8/2007 356710/9/2007 3568
10/10/2007 356910/11/2007 357010/12/2007 357110/13/2007 357210/14/2007 357310/15/2007 357410/16/2007 357510/17/2007 357610/18/2007 357710/19/2007 357810/20/2007 357910/21/2007 358010/22/2007 358110/23/2007 358210/24/2007 358310/25/2007 358410/26/2007 358510/27/2007 358610/28/2007 3587
10/29/2007 358810/30/2007 358910/31/2007 3590
11/1/2007 359111/2/2007 359211/3/2007 359311/4/2007 359411/5/2007 359511/6/2007 359611/7/2007 359711/8/2007 359811/9/2007 3599
11/10/2007 360011/11/2007 360111/12/2007 360211/13/2007 360311/14/2007 360411/15/2007 360511/16/2007 360611/17/2007 360711/18/2007 360811/19/2007 360911/20/2007 361011/21/2007 361111/22/2007 361211/23/2007 361311/24/2007 361411/25/2007 361511/26/2007 361611/27/2007 361711/28/2007 361811/29/2007 361911/30/2007 3620
12/1/2007 362112/2/2007 362212/3/2007 362312/4/2007 362412/5/2007 362512/6/2007 362612/7/2007 362712/8/2007 3628
Calibration Date Table Appendix E
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 209
Calibration Date Number of Days Calibration Date Number of Days
12/9/2007 362912/10/2007 363012/11/2007 363112/12/2007 363212/13/2007 363312/14/2007 363412/15/2007 363512/16/2007 363612/17/2007 363712/18/2007 363812/19/2007 363912/20/2007 364012/21/2007 364112/22/2007 364212/23/2007 364312/24/2007 364412/25/2007 364512/26/2007 364612/27/2007 364712/28/2007 364812/29/2007 364912/30/2007 365012/31/2007 3651
Serial Number Cut in History Appendix F
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 211
Table F-1. Changed to a new BP Valve
Table F-2. Changed E-Pac. Changed to class B power supply.
Table F-3. Upgraded printer cable to a cable with foam tape attached.
The foam tape ads extra safety into the printer cable.
Table F-4. Upgraded the Main PCB from 501 to 502.
Upgraded the Main PCB to make it ESU tolerant. Added user feature to print on alarm or not print on alarm. Software changed to 2.2
Model Serial#
621N0 62201361
621SP 62100948
622N0 62201361
622NP 62201357
623SP 62300410
623NP 62300412
Model Serial#
621S0 62100935
621SP 62100941
622S0 62101305
622SP 62200135
622N0 62201305
622NP 62201312
623SP 62300405
623NP 62300408
Model Serial#
621xx 62104069
622xx 62208111
623xx 62304018
Model Serial#
621xx 62103000
622xx 62206000
623xx 62303000
212 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D
Appendix F Serial Number Cut in History
Table F-5. Upgraded the Nellcor SpO2 PCB from 204/205 to 506.
NOTE: The new Nellcor 506 SpO2 PCB is backward compatibly. The new 506 SpO2 sensor extension cable “DEC-8”, that can be identified by the purple connector, is backward com-patible with the older 204/205 SpO2 PCB. The older 204/205 SpO2 sensor extension cable “EC-8”, that can be identified by the gray connector, will not work “it will not physically plug into the Atlas connector” with the new Nellcor 506 SpO2 PCB. The software was changed to version 2.5.
The older sensors, that are indentified by the gray connector, will not work with the newer sensor extension cables even though the sensor will physically plug into the newer sensor extension cable “DEC-8”. The newer patient sensors have a purple connector and will work on the older sensor extension cables.
Model Serial#
621xx 62104000
622xx 62208000
623xx 62304000
Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 213
Atlas Calibration and Function Test FormAtlas Model Number______________ Atlas Serial Number_______________Calibration date__________________ Last Calibration date_______________Software Version_________________ Boot Revision_____________________SpO2 Manufacture_______________ SpO2 PCB________________________SpO2 Software Revision___________ CO2 Revision_____________________Last CO2 Reset Date:_______________ Last CO2 Calibration______________
Calibration ResultsPASS FAIL
____ ____ Date and time accuracy____ ____ BP calibration (50mmHg and 250mmHd)____ ____ CO2 reset____ ____ CO2 calibration____ ____ No load battery voltage calibration____ ____ Battery voltage calibration____ ____ Printer adjustment____ ____ Calibration date set____ ____ Software upgrade____ ____ Download NVRAM files
Functional test Results____ ____ Power on self test____ ____ Menu functional test____ ____ BP dymanic test____ ____ BP statc test____ ____ Over 15mmHg test____ ____ BP Dump test____ ____ Hardware functional test____ ____ ECG/Respiration test____ ____ SpO2 test____ ____ Temperature test____ ____ CO2 functional test____ ____ Battery functional tests____ ____ Printer functional test____ ____ Print on alarm test____ ____ ECG alarm test____ ____ Respiration alarm test____ ____ Silence alarm test____ ____ CO2/Respiration test____ ____ Blood Pressure alarm test
Date Completed__________ Technician_____________________
N/A=Not Applicable
Place a check mark by each of the following data items
214 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. D