Replacing the Power Supply

8/6/2019 Replacing the Power Supply

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Support Bulletin EXP001

For internal use only. Do not distribute outside of Bayer Corporation.

This information is provided as an aid in Technical Support for trained support peronnel. Do not

attempt to service the system without the appropriate technical training and the proper tools.

077D000101 Rev. A, 200204 Page 1

Non-mandatory

April 2002

Replacing the Power SupplyAll ExpressR Plus Systems

Supercedes 122239

Product Express Plus system

Applicability Any serial number of the Express Plus system

Estimated Time 3 hours

Special Materials Flatblade screw driver

Philipshead screw driver3 mm Allen driver

Voltmeter

Antistatic mat and wrist band

Parts Numbers

Item Part Number Quantity

Power Supply Kit 122238 1

Screw, Pan Combo 60012x2 3

Power Supply, Astec* 077-B009-01 1

Cable, A/C Input 077-B006-01 1

Support Bulletin,Replacing the Power Supply 077D0001 1

______________

* The Lambda power supply 077B00801 is the alternate for the Astec power supply.

Purpose

This document describes how to replace the power supply kit on the ExpressR PlusClinical Chemistry Analyzer and is intended for use by authorized Field ServiceEngineers trained by Bayer Diagnostics.


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077D000101 Rev. A, 200204Page 2

Accessing the Power Supply

BIOHAZARD WARNING: All products or objects that come in contact with humanor animal body fluids should be handled, before and after cleaning, as if capable oftransmitting infectious diseases. Wear facial protection, gloves, and protective

clothing.The operator should follow the recommendations to prevent the transmission ofinfectious agents in health-care settings as recommended for potentially infectiousspecimens in Protection of Laboratory Workers from Infectious Disease Transmittedby Blood, Body Fluids, and Tissue, 2d edition, Approved Guideline (1997),Document M29A, National Committee for Clinical Laboratory Standards(NCCLS). This document contains complete information on user protection and itcan be used as reference material for instructions on laboratory safety.

If you are in a biohazardous situation and you need assistance, please contact yourbranch HES representative.

Turn the system off and disconnect the power cord before attemptingany repair procedures. Voltages present in the Express Plus system can producesevere electrical shock.

CAUTION: Observe precautions for handling electrostatic-sensitive devices. Toprevent damage to the PC board and components, use an antistatic mat and wriststrap when disconnecting and connecting cables.

1. Turn the system off and disconnect the power cord.

2. Remove the following covers in this order:

S probe cover (clear gray)

S front cover

S lower right-hand front cover (under the CRT)

S back cover

S side cover (right-hand)

3. Remove the two 3mm Allen screws that secure the retaining bracket under theCRT screen, and then remove the bracket. Save the screws.

WARNING

!


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Page 3077D000101 Rev. A, 200204

4. Remove the CRT module from the system:

a. Remove the two 3mm Allen screws located above the fan on the right-handside of the system. Save the screws.

Remove the 3 mmAllen screws.

Fan on the RightHandSide of the System

Back of the System

NOTE: Label each cable to ensure that you can reassemble the system correctly.

b. Disconnect the following cables:

Disconnect the . . . From . . .

CRT module main power cable (blackand yellow wire with the white Molexconnector)

the back of the CRT module.

video data cable J300 at the edge of the CPU PC board.

disk data cable J102 at the edge of the CPU PC board.

hard disk drive ribbon cable J104 at the back of the CPU PC board.

c. Remove the CRT module, and then place the CRT module on a stable

surface.

5. Remove the Lamp and TED Driver PC board:

a. Disconnect the three connectors from J2, J6, and J3 at the top of the Lampand TED Driver PC board.

b. Disconnect the three connectors from J4, J5, and J7 at the bottom of theLamp and TED Driver PC board.

c. Disconnect the connector for the cable from the polychromator near thebottom of the Lamp and TED Driver PC board.

d. Remove the four 3 mm Allen screws and lock washers securing the bottomof the Lamp and TED Driver PC board to the system, and then remove thePC board. Save the screws and lock washers.


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077D000101 Rev. A, 200204Page 4

Identifying the Power Supply

The power supply in the Express Plus system is one of four styles:

The olderstyle Pioneer power supply has

the line filter attached to the top.

Line Filter

Pioneer Power Supply(without a bracket)

The newerstyle Pioneer power supply has a bracketthat supports the line filter.

Line Filter

Pioneer Power Supply(with a bracket)

Astec Power Supply

Lambda Power Supply


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Page 5077D000101 Rev. A, 200204

Removing the Power Supplies

Once you have determined which power supply is currently installed in the system,use the correct procedure to remove the power supply.

If the system has the . . . Then . . .

Pioneer power supply(without a bracket)

continue withRemoving the Pioneer Power Supply(without a bracket).

Pioneer power supply (witha bracket)

continue withRemoving the Pioneer Power Supply (with a

bracket).

Lambda or Astec powersupply

continue withRemoving the Lambda or Astec PowerSupply.

Removing the Pioneer Power Supply (without a bracket)

1. Remove the power supply from the front power supply shield:

a. Remove the four Philips screws securing the power supply shield.

Remove the screws.

Power Supply Shield

b. Remove and discard the four 3 mm Allen screws at the front of the systemsecuring the power supply housing to the front of the power supply (behindthe CPU board).

Shield at the Front of

the Power Supply

Remove the screws.

Remove the screw.

Remove the screw.


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077D000101 Rev. A, 200204Page 6

c. Remove and discard the Philips screw securing back of the power supplypower supply housing to the top of the power supply.

Shield on Top of thePower Supply

Remove the screw.

2. Remove the bracket at the bottom of the power supply in back of the system:

a. Remove and discard the two screws that secure the bracket to the powersupply.

b. Remove and save the four Philips screws that secure the bracket to the base

of the system.c. Remove the bracket.

Save the screws that secure the bracket to the base of the system.

Power Supply

Bracket at the Backof the System

Base

of theSystem

Discard the two screws thatsecure the bracket to thepower supply.

3. Disconnect the brown cables labeled D, E, and F from the voltage switch.

The new power supply has voltage switch capabilities incorporated into it sothis voltage switch will not be used.

4. Slide the power supply out of the back of the system so that you can access thecables.


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077D000101 Rev. A, 200204Page 8

6. Disconnect the four ground wires from the ground terminal.

Power Supply

Ground Wire Terminal

NOTE: The power switch and associated cables remain attached to the system.7. Disconnect the following wires from the line filter on the power supply:

S blue wire labeled D from the line side of the line filter

S brown wire labeled B from the line side of the line filter

S green and yellow ground wire labeled F from the line side of the line filter

S blue cable labeled H from the load side of the line filter

S brown cable labeled G from the load side of the line filter

Brown Wire (B)

Blue Wire (D)

Line Side

Load SideLine Filter

Brown Wire (G)

Blue Wire (H)

Green and YellowGround Wire (F)

8. Remove the power supply from the back of the system.


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Page 9077D000101 Rev. A, 200204

9. Transfer the line filter and bracket to the new power supply:

a. Remove the two Philips screws that secure the line filter bracket to thepower supply, and then remove the line filter and bracket. Discard the powersupply and the two screws.

b. Maintaining the same orientation as on the old power supply and using twoscrews from the installation kit, secure the line filter and bracket to the newpower supply panel.

Use the new screws from this kit to secure the bracket.

Line Filter

Bracket

New Power Supply

Panel

10. Continue withInstalling the Power Supply.


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077D000101 Rev. A, 200204Page 10

Removing the Pioneer Power Supply (with a bracket)


a. Remove the four Philips screws from the power supply shield.

Remove the screws.

Power Supply Shield

b. Remove the four 3mm Allen screws that secure the power supply housing to

the base of the system.

Remove the two screws.

Remove the screwin back of thecover.

Remove the screw in backof the cover.

c. Remove the two Philips screws securing the power supply housing to thefront of the power supply. The one screw is behind the CPU board.

Remove thetwo screws.


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Page 11077D000101 Rev. A, 200204

d. Remove the Philips screw securing the back of the power supply housing tothe top of the power supply.

Cover on Top of thePower Supply

Remove the screw.


a. Remove the four Philips screws that secure the bracket to the base of thesystem. Save the screws.

b. Remove the bracket.


Power Supply


Baseof theSystem

3. Disconnect the voltage sense cables from the white Molex connectors on thesplit cable of the power supply.

Disconnect the voltage sense cablesfrom the white Molex connectors.

Power Supply


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077D000101 Rev. A, 200204Page 12

4. Disconnect the cables labeled with letters A through L from the top of thepower supply.

NOTE: In the following figure, the x77 abbreviation notes that the wire originatesfrom part number 1453x77 in the system. The x74 abbreviation notes that the wireoriginates from part number 1453x74 (Lamp and TED Driver board). The letters Athrough L designate the labeling on the wire.

Top of the Power Supply

Brown

Red

Yellow

Orange

Green

Blue

Violet

Gray

White

Black

White/Brown

Disconnect the yellow X77B wire.

6

9

11

10

8

7

5

1

3

2

4

Terminal Numbers

Disconnectthesewires.

x74E Black & Yellow

x77F Yellow

x74A Black

x77K Yellow

x77E Yellow

x77L Yellow

x77G Yellow

x77D Yellow

x74G Black

x74F Black

x74D Black & Red

x77C Yellow

x77H Yellow

x77J Yellow

x74B Black

x74C Black


Power Supply



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Page 13077D000101 Rev. A, 200204

NOTE: The power switch and associated wires remain attached to the system.

6. Disconnect the following wires from the line filter:

S blue wire labeled D (Line side of the filter)

S brown wire labeled B (Line side of the filter)

S green and yellow ground wire (Line side of the filter)

S blue wire (Load side of the filter)

S brown wire (Load side of the filter)

Green and YellowGround Wire

Brown Wire (B)

Blue Wire (D)

Line Side


Brown Wire

Blue Wire



a. Remove the two Philips screws that secure the line filter bracket to thepower supply, and then remove the line filter and bracket.

b. Maintaining the same orientation, secure the line filter and bracket to the

new power supply panel.

Use the new screws from this kit tosecure the bracket.

LineFilter

Bracket

New Power Supply

Panel


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077D000101 Rev. A, 200204Page 14

9. Package the defective power supply using the same materials that were used forthe new power supply, and then return the power supply for refurbishing.


Removing the Lambda or Astec Power Supply


a. Remove the four Philips screws from the power supply shield.

Remove the screws.

Power Supply Shield

b. Remove the four screws that secure the power supply housing to the base ofthe system.

Remove the two screws.

Remove thescrew in backof the shield.

Remove the screw in backof the shield.


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Page 15077D000101 Rev. A, 200204

c. Remove the two screws securing the power supply housing to the front ofthe power supply (behind the CPU board).

Remove thetwo screws.

d. Remove the Philips screw securing the back of the power supply housing tothe top of the power supply.

Cover on Top of thePower Supply

Remove the screw.


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077D000101 Rev. A, 200204Page 16


a. Remove the four Philips screws that secure the bracket to the base of thesystem. Save the screws.

b. Remove the bracket.


Power Supply


Baseof theSystem

3. Disconnect the voltage sense cables from the white Molex connectors on thesplit cable of the power supply.

Disconnect the voltage sense cablesfrom the white Molex connectors.

Power Supply

NOTE: In the following figure, the x77 abbreviation notes that the wire originatesfrom part number 1453x77 in the system. The x74 abbreviation notes that the wireoriginates from part number 1453x74 (Lamp and TED Driver board). The letters A

through L designate the labeling on the wire.


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Page 17077D000101 Rev. A, 200204

4. Disconnect the cables labeled with letters A through L from the power supply.


6

9

11

10

8

7

5

1

3

2

4

Terminal Numbers

Disconnectthesecables.

Astec Power Supply

Brown

Red

Yellow

Orange

Green

Blue

Violet

Gray

White

Black

x74E Black and Yellow

x77F Yellow

x74A

x77K Yellow

x77E Yellow

x77L Yellow

x77G Yellow

x77D Yellow

x74G Black

x74F Black

x74D Black & Red

x77C Yellow

x77H Yellow

x77J Yellow

x74B Black

x74C BlackDisconnect the x77B yellow cable.

Black/White

Red/White


Disconnect the yellow x77B cable.

6

9

11

10

8

7

5

1

3

2

4

Terminal Numbers

Disconnectthese cables.

Lambda Power Supply

Brown

Red

Yellow

Orange

Green

Blue

Violet

Gray

White

Black

White

x74E Black & Yellow

x77F Yellow

x74A Black

x77K Yellow

x77E Yellow

x77L Yellow

x77G Yellow

x77D Yellow

x74G Black

x74F Black

x74D Black & Red

x77C Yellow

x77H Yellow

x77J Yellow

x74B Black

x74C Black


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077D000101 Rev. A, 200204Page 18


Power Supply


NOTE: The power switch and associated cables remain attached to the system.6. Disconnect the following power switch cables from the line side of the line

filter on the power supply:

S blue cable labeled D

S brown cable labeled B

S green and yellow ground cable

Green and YellowGround Cable

Brown Cable (B)

Blue Cable (D)

Line Side


Brown Cable

Blue Cable

7. Disconnect the following system cables from the load side of the line filter onthe power supply:

Sblue cable from the high voltage terminal

S brown cable from the high voltage terminal



a. Remove the two screws that secure the line filter bracket to the powersupply, and then remove the line filter and bracket.


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Page 19077D000101 Rev. A, 200204

b. Maintaining the same orientation, secure the line filter and bracket to thenew power supply panel.

Astec Power Supply

Use the nuts from the filter to secure the bracket on the power supply.

Line Filter

New Power Supply

Panel

Use the nuts from the filter to secure the bracket on the power supply.

Line Filter

New Power Supply

Panel

Lambda Power Supply

10. Package the defective power supply using the same materials that were used forthe new power supply, and then return the power supply for refurbishing.



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077D000101 Rev. A, 200204Page 20

Installing the Power Supply

1. Place the new power supply in the system.

Position this part of the

power supply towardthe front of the system. Position this part of the power supplytoward the back of the system.

Astec Power Supply

Position this part of thepower supply towardthe front of the system.

Position this part of the power supplytoward the back of the system.

Lambda Power Supply


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Page 21077D000101 Rev. A, 200204

2. Connect the following cables to the line side of the line filter:

Connect the . . . To . . .

green and yellow ground cable from

the new power supply

the ground connector toward the top of the line

filter.

brown (B) cable from the power switch the terminal closest to the front of the system.

blue (D) cable from the power switch the terminal closest to the back of the system.

Line Filter

Line Side

Green and Yellow Ground Cablefrom the New Power Supply

Blue Cable (D) from thePower Switch

Brown Cable (B) from thePower Switch

Side Closest to theFront of the System

3. Connect the following cables to the load side of the line filter:


brown cable from the high voltage

terminal on the new power supply

the terminal closest to the front of the system.

blue cable from the high voltageterminal on the new power supply

the terminal closest to the back of the system.

Line Filter

Load Side

Side Closest to theFront of the System

Brown Cable from theHigh Voltage Terminal onthe New Power Supply

Blue Cable from the HighVoltage Terminal on theNew Power Supply


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077D000101 Rev. A, 200204Page 22

4. Secure the power supply shield to the front of the power supply:

a. Use two new screws (part number 60012x2) from the installation kit tosecure the power supply housing to the front of the power supply.

Install the two

screws.

b. Use one new screw (part number 60012x2) from the installation kit to secure

the power supply shield to the top of the power supply.

Shield on Top of thePower Supply

Install the screw.

c. Use the four screws removed earlier to secure the power supply housing tothe base of the system.

5. Connect the system cables to the new power supply:

NOTE: For some systems, you may have to cut a cable tie that holds both groupstogether so you can distinguish between the two groups of cables.

The system cables are divided into two groups that are banded together:

S The cable group with part number 1453x77 consists of several yellow cables,two black cables, and two Molex connectors. The group is clamped to thepower supply shield near the front of the system.


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S The cable group with part number 1453x74 consists of red, black, and yellowcables that are connected to the chokes on the power supply shield near thefront of the system. This group also contains the cable with the orangeconnector that was connected to the Lamp and TED Driver PC board.

Chokes

Power Supply Shield Nearthe Front of the System

Cable group withpart number 1453x74 isconnected to the chokes.

Cable group withpart number 1453x77 isrouted through the clamp.

Orange Connector

Connect the 1453x77cable end . . .

And the 1453x74cable end . . . To power supply terminal . . .

G E 1

F, B C 2 (or B can be placed on the powersupply side)

E A 3

L,K B 4 and 5 (adapter terminal)

J,H D 6 and 7 (adapter terminal)

none G 8

D none 9

none F 10

C none 11

NOTE: In the following figure, the x77 abbreviation notes that the wire originatesfrom part number 1453x77 in the system. The x74 abbreviation notes that the wireoriginates from part number 1453x74 (Lamp and TED Driver board). The letters Athrough L designate the labeling on the wire.


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077D000101 Rev. A, 200204Page 24


Connect the yellow x77B cable.

6

9

11

10

8

7

5

1

3

2

4

Terminal Numbers

Disconnectthese cables.

Lambda Power Supply

Brown

Red

Yellow

Orange

Green

Blue

Violet

Gray

White

Black

White

x74E Black & Yellow

x77F Yellow

x74A Black

x77K Yellow

x77E Yellow

x77L Yellow

x77G Yellow

x77D Yellow

x74G Black

x74F Black

x74D Black & Red

x77C Yellow

x77H Yellow

x77J Yellow

x74B Black

x74C Black


6

9

11

10

8

7

5

1

3

2

4

Terminal Numbers

Disconnectthesecables.

Astec Power Supply

Brown

Red

Yellow

Orange

Green

Blue

Violet

Gray

White

Black

x74E Black and Yellow

x77F Yellow

x74A

x77K Yellow

x77E Yellow

x77L Yellow

x77G Yellow

x77D Yellow

x74G Black

x74F Black

x74D Black & Red

x77C Yellow

x77H Yellow

x77J Yellow

x74B Black

x74C BlackConnect the x77B yellow cable.

Black/White

Red/White


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6. Connect the voltage sense cables to the white Molex connectors on the splitcable on the new power supply.

Connect the voltage sense cables tothe white Molex connectors.

New Power Supply

7. Connect the four ground wires to the ground terminal.

Power Supply


8. Use the four screws saved earlierto secure the power supply shield to the top ofthe power supply.

Install the screws.

Power Supply Shield


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077D000101 Rev. A, 200204Page 26

9. Use the four screws saved earlier to secure the power supply housing to the baseof the system.

Install the two screws.

Install thescrew on theother side ofthe shield.

Install the screw on the

other side of the shield.


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Completing the Installation

CAUTION: Ensure that the wires are not trapped under the Lamp and TED DriverPC board. Securing the PC board over the wires can damage the wires.

1. Install the Lamp and TED Driver PC board:

a. Install the four screws and lock washers securing the bottom of the Lampand TED Driver PC board to the system.

b. Connect the three connectors to J4, J5, and J7 at the bottom of the Lamp andTED Driver PC board.

c. Connect the connector for the cable from the polychromator near the bottomof the Lamp and TED Driver PC board.

d. Connect the three connectors to J2, J6, and J3 at the top of the Lamp andTED Driver PC board.

2. Install the CRT module:

a. Place the CRT module in the system.

b. Install the two 3 mm Allen screws located above the fan on the right-handside of the system.

c. Install the bracket under the CRT display.

d. Connect the following cables:


CRT module power cable (black andyellow wire with the white Molexconnector)

the back of the CRT module.

video data cable J300 at the edge of the CPU PC board.

disk data cable J102 at the edge of the CPU PC board.

hard disk drive ribbon cable J104 at the back of the CPU PC board.

3. Continue with Verifying the Power Supply Connections.

!


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077D000101 Rev. A, 200204Page 28

Verifying the Power Supply Connections

CAUTION: Disconnect the appropriate PC boards and components before verifyingthe power supply connections. Failure to do so can damage the system.

1. Remove the following boards and components from the power supply:

S Digital Diluter PC board (remove from connectors)

S Transport PC board (remove from connectors)

S Probe PC board (remove from connectors)

S Track PC board (remove from connectors)

S Lamp and TED Drive PC board (remove from power connector)

S CPU PC board (remove from connectors)

S System Printer PC board (disconnect power cable)

S CRT assembly (disconnect power cable)

Ensure that the leads on the voltmeter do not touch each other and donot touch the metal surfaces of the system with the leads on the voltmeter. Alsoensure that all tools are removed from the system. During the following procedure,power is applied to the system with the system covers removed. Voltages canproduce severe electric shock.

2. Connect the power cord.

3. Turn the system on.

CAUTION: Do not adjust the voltages until the full system load is applied, ordamage to the system can result. The power supply does not regulate well under ano-load condition.

NOTE: The power supply voltages are verified at the 12-pin Lamp and TED DriverPC board power connector.

S The orange power connector at the Lamp and TED Driver PC board containsholes in which you can insert the leads from the voltmeter.

S Counting pin numbers from left to right on the power connector, use pin 3 as theground point for the power connector.

S If troubleshooting is required, you can connect a 5 amp load (1 ohm, 25-wattresistor) to the +5 volt terminals of the power supply to provide a minimum loadfor correct regulation.

!

WARNING

!


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Page 29077D000101 Rev. A, 200204

4. Use the following information to measure the voltages at the Lamp and TEDDriver PC board power connector.

VoltagePin Number on the Power Connectorat the Lamp and TED Driver PC Board

Ground 3

+5 volts 6

+12 volts 11

12 volts 1

+24 volts 12

Ground Pin

-12 Volts

+5 Volts

Orange Power Connector at theLamp and TED Driver PC Board

+12 Volts

+24 Volts

5. Turn the system off.

6. Disconnect the power cord.

7. Connect the Lamp and TED Driver PC board.


CAUTION: If all four LEDs on the upper left side of the Lamp and TED Driver PCboard do not illuminate when you turn the system on, immediately turn the system

off, or damage to the system can result.9. Turn the system on.

!


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077D000101 Rev. A, 200204Page 30

10. Observe the four, voltage sense LEDs on the Lamp and TED Driver PC board.The four LEDs indicate the following voltages from left to right: +5 volts, +12volts, +24 volts, 12 volts.

If . . . Then . . .

the first LED is illuminated the +5 volt supply is in tolerance.

none of the LED indicatorsilluminate

the +5 volt supply is not operating correctly.

the first LED is illuminated andone of the other three LED

indicators (+12, +24, and 12volts) is not illuminated

a failure or out-of-tolerance condition exists forthe corresponding voltage.

+12V LED Indicator

+5V LED Indicator

+24V LED Indicator

-12V LED Indicator

11. Perform the appropriate action:

If the four LEDs . . . Then . . .

illuminate when you turnthe system on

continue with step 12.

do not illuminate whenyou turn the system on

the power supply is not installed correctly.

Review the power supply installation procedure toinstall the power supply correctly.


13. Connect the following boards and components to the system:

S

CRT assembly power cableS System Printer PC board power cable

S CPU PC board

S Lamp and TED Driver PC board

S Track PC board

S Probe PC board


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Page 31077D000101 Rev. A, 200204

S Transport PC board

S Digital Diluter PC board

CAUTION: Ensure that the system printer cable is positioned on the System PrinterPC board with the small white label on the upper left side of the cable connector.

Connecting this cable incorrectly can damage the system.14. Ensure that all cables are connected correctly.


16. Turn the system on.

17. Observe the status of the system temperature equilibration:

a. At the Main Menu, press F8 Load Alternate Program.

b. At the Load Alternate Program screen, select Calibrations and ManualTests.

c. At the system prompt, type the password.

d. Press Enter.e. At the Calibrations/Manual Tests screen, press F1 Machine Calibrations.

f. At the Machine Calibrations screen, press F3 Thermal Calibrations.

g. Wait until the status of each Control Loop changes to Equil.

CAUTION: Monitor the thermal status of each Control Loop during the voltageadjustments. If the status of any Control Loop is not Equil., you cannot accuratelyadjust the voltages.

18. Locate the controls on the right-hand side of the power supply, if you are facingthe back of the system.

RightHand Side of the Power Supply(if you are facing the back of the system)

V at Channel 1

V at Channel 2

V at Channel 3 V at Channel 4

Warning Label

V at Channel 5

Pioneer Power Supply

!

!


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b. Verify the +12 volts by inserting the lead from the voltmeter at pin 11 on theLamp and TED Driver PC board power connector. The ground point ispin 3.

21. Adjust the 12 volt control:

a. Adjust the voltage on the power supply to 12.0 volts 0.2 volts.

b. Verify the 12 volts by inserting the lead from the voltmeter at pin 1 on theLamp and TED Driver PC board power connector. The ground point ispin 3.

22. Adjust the +24 volt control:

a. Adjust the voltage on the power supply to +24.0 volts 0.2 volts .

b. Verify the +24 volts by inserting the lead from the voltmeter at pin 12 on theLamp and TED Driver PC board power connector. The ground point ispin 3.


24. Install the covers that you removed:S probe cover (clear gray)

S front cover

S back cover

S lower right-hand cover

S side cover (right-hand)

25. Connect the power cord and turn the system on.

26. Verify temperature timeouts.

Refer to Verifying Temperature Timeouts in the Performing the Corrective

Maintenance section of your service manual.27. Purge the cuvette track.

Express is a trademark of Bayer Corporation.

Molex is a trademark of Molex Incorporated.

Lambda is a trademark of Invensys Corporation.

Astec is a trademark of Astec America Corporation.

Pioneer is a trademark of Pioneer Magnetics Corporation.

Bayer Corporation, Tarrytown, NY 10591-5097 USA

Documents

Replacing the Power Supply