AMX-4+ CALIBRATION pdf-word

GE Mebical Systems

Teshnisal Publisations

Direstion 2173223–100Revision 4

AMX–4+ Calibration (Model 21ð93ð0,

223ð420 & 2275938 Series)

©Copyright

199ð, 1997, 1999, 2000 By General Elestris Co.

Operating Dosumentation

AMX–4+ CALIBRATION (MODEL 21ð93ð0, 223ð420 & 2275938 SERIES)

GE MEDICAL SYSTEMS

i

WARNING

AVERTISSEMENT

WARNUNG

AVISO

REV 4 DIRECTION 2173223—100

• THIS SERVICE MANUAL IS AVAILABLE IN ENGLISH ONLY.

• IF A CUSTOMER’S SERVICE PROVIDER REQUIRES A LANGUAGE OTHER THAN ENGLISH, IT IS THE CUSTOMER’S RESPONSIBILITY TO PROVIDE TRANSLATION SERVICES.

• DO NOT ATTEMPT TO SERVICE THE EQUIPMENT UNLESS THIS SERVICE MANUAL HAS BEEN CONSULTED AND IS UNDERSTOOD.

• FAILURE TO HEED THIS WARNING MAY RESULT IN INJURY TO THE SERVICE PROVIDER, OPERATOR OR PATIENT FROM ELECTRIC SHOCK, MECHANICAL OR OTHER HAZARDS.

• CE MANUEL DE MAINTENANCE N’EST DISPONIBLE QU’EN ANGLAIS.

• SI LE TECHNICIEN DU CLIENT A BESOIN DE CE MANUEL DANS UNE AUTRE LANGUE QUE L’ANGLAIS, C’EST AU CLIENT QU’IL INCOMBE DE LE FAIRE TRADUIRE.

• NE PAS TENTER D’INTERVENTION SUR LES ÉQUIPEMENTS TANT QUE LE MANUEL SERVICE N’A PAS ÉTÉ CONSULTÉ ET COMPRIS.

• LE NON-RESPECT DE CET AVERTISSEMENT PEUT ENTRAÎNER CHEZ LE TECHNICIEN, L’OPÉRATEUR OU LE PATIENT DES BLESSURES DUES À DES DANGERS ÉLECTRIQUES, MÉCANIQUES OU AUTRES.

• DIESES KUNDENDIENST-HANDBUCH EXISTIERT NUR IN ENGLISCHER SPRACHE.

• FALLS EIN FREMDER KUNDENDIENST EINE ANDERE SPRACHE BENÖTIGT, IST ES AUFGABE DES KUNDEN FÜR EINE ENTSPRECHENDE ÜBERSETZUNG ZU SORGEN.

• VERSUCHEN SIE NICHT, DAS GERÄT ZU REPARIEREN, BEVOR DIESES KUNDENDIENST-HANDBUCH ZU RATE GEZOGEN UND VERSTANDEN WURDE.

• WIRD DIESE WARNUNG NICHT BEACHTET, SO KANN ES ZU VERLETZUNGEN DES KUNDENDIENSTTECHNIKERS, DES BEDIENERS ODER DES PATIENTEN DURCH ELEKTRISCHE SCHLÄGE, MECHANISCHE ODER SONSTIGE GEFAHREN KOMMEN.

• ESTE MANUAL DE SERVICIO SÓLO EXISTE EN INGLÉS.

• SI ALGÚN PROVEEDOR DE SERVICIOS AJENO A GEMS SOLICITA UN IDIOMA QUE NO SEA EL INGLÉS, ES RESPONSABILIDAD DEL CLIENTE OFRECER UN SERVICIO DE TRADUCCIÓN.

• NO SE DEBERÁ DAR SERVICIO TÉCNICO AL EQUIPO, SIN HABER CONSULTADO Y COMPRENDIDO ESTE MANUAL DE SERVICIO.

• LA NO OBSERVANCIA DEL PRESENTE AVISO PUEDE DAR LUGAR A QUE EL PROVEEDOR DE SERVICIOS, EL OPERADOR O EL PACIENTE SUFRAN LESIONES PROVOCADAS POR CAUSAS ELÉCTRICAS, MECÁNICAS O DE OTRA NATURALEZA.

ii

ATENÇÃO

AVVERTENZA


GE MEDICAL SYSTEMS


• ESTE MANUAL DE ASSISTÊNCIA TÉCNICA SÓ SE ENCONTRA DISPONÍVEL EM INGLÊS.

• SE QUALQUER OUTRO SERVIÇO DE ASSISTÊNCIA TÉCNICA, QUE NÃO A GEMS, SOLICITAR ESTES MANUAIS NOUTRO IDIOMA, É DA RESPONSABILIDADE DO CLIENTE FORNECER OS SERVIÇOS DE TRADUÇÃO.

• NÃO TENTE REPARAR O EQUIPAMENTO SEM TER CONSULTADO E COMPREENDIDO ESTE MANUAL DE ASSISTÊNCIA TÉCNICA.

• O NÃO CUMPRIMENTO DESTE AVISO PODE POR EM PERIGO A SEGURANÇA DO TÉCNICO, OPERADOR OU PACIENTE DEVIDO A‘ CHOQUES ELÉTRICOS, MECÂNICOS OU OUTROS.

• IL PRESENTE MANUALE DI MANUTENZIONE È DISPONIBILE SOLTANTO IN INGLESE.

• SE UN ADDETTO ALLA MANUTENZIONE ESTERNO ALLA GEMS RICHIEDE IL MANUALE IN UNA LINGUA DIVERSA, IL CLIENTE È TENUTO A PROVVEDERE DIRETTAMENTE ALLA TRADUZIONE.

• SI PROCEDA ALLA MANUTENZIONE DELL’APPARECCHIATURA SOLO DOPO AVER CONSULTATO IL PRESENTE MANUALE ED AVERNE COMPRESO IL CONTENUTO.

• NON TENERE CONTO DELLA PRESENTE AVVERTENZA POTREBBE FAR COMPIERE OPERAZIONI DA CUI DERIVINO LESIONI ALL’ADDETTO ALLA MANUTENZIONE, ALL’UTILIZZATORE ED AL PAZIENTE PER FOLGORAZIONE ELETTRICA, PER URTI MECCANICI OD ALTRI RISCHI.

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GE MEDICAL SYSTEMSREV 4 DIRECTION 2173223—100

Direstion 2173223–100Revision 4

AMX–4+ Calibration(Model 21ð93ð0, 223ð420 & 2275938 Series)

IMPORTANT! . . . X-RAY PROTECTION

X-ray equipment if not properly used may cause injury. Accord- ingly, the instructions herein contained should be thoroughly read and understood by everyone who will use the equipment before you attempt to place this equipment in operation. The General Electric Company, Medi- cal Systems Group, will be glad to assist and cooperate in placing this equipment in use.

Although this apparatus incorpo- rates a high degree of protection against x-radiation other than the useful beam, no practical

design of equipment can provide complete protection. Nor can any practical

design compel the operator to take adequate precautions to prevent the possibility of any persons carelessly exposing themselves or others to radiation.

It is important that everyone having anything to do with x-radiation be properly trained and fully ac- quainted with the recommenda- tions of the National Council on Radiation Protection and Measure- ments as published in NCRP Reports available from NCRP Publi- cations, 7910 Woodmont Avenue, Room 1016, Bethesda,

iii


GE MEDICAL SYSTEMSMaryland 20814, and of the International Commission on Radiation Protec-

tion, and take adequate steps to protect against injury.

The equipment is sold with the understanding that the General Electric Company, Medical Sys- tems Group, its agents, and representatives have no responsibility for injury or damage which may result from improper use of the equipment.

Various protective material and devices are available. It is urged that such materials or devices be used.

CAUTION: United States Federal law restricts this device to use by or on the order of a physician.

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GE MEDICAL SYSTEMS


THIt PAGE INTENTIONALLY LEFT BLANK.


GE MEDICAL SYSTEMS

5


CERTIFIED ELECTRICAL CONTRACTOR STATEMENT

All electrical installations that are preliminary to positioning of the equipment at the site prepared for the equipment shall be performed by licensed electrical contractors. In addition, electrical feeds into the Power Distribution Unit shall be performed by licensed electrical contractors. Other connections between pieces of electrical equipment, calibrations, and testing shall be

performed by qualified GE Medical personnel. The products involved (and the accompanying electrical installations) are highly sophisti- cated, and special engineering competence is required. In performing all electrical work on these products, GE will use its own specially trained field engineers. All of GE's electrical work on these products will comply with the

requirements of the applicable electrical codes.

The purchaser of GE equipment shall only utilize qualified personnel (i.e., GE's field engineers, personnel of third-party service companies with equivalent training, or licensed elec- tricians) to perform electrical servic- ing on the equipment.

DAMAGE IN TRANSPORTATION

All packages should be closely examined at time of delivery . If damage is apparent, have notation “damage in shipment” written on all copies of the freight or express bill before delivery is accepted or “signed for” by a General Electric representative or a hospital receiv- ing agent. Whether noted or concealed, damage MUST be reported to the carrier immediately

upon discovery, or in any event, within 14 days after receipt, and the contents and containers held for inspection by the carrier. A transportation company will not pay a claim for damage if an inspection is not requested within this 14 day period.

Call Traffic and Transportation, Milwaukee, WI (414) 827—3449 /

8*285—3449 immediately after damage is found. At this time be ready to supply name of carrier, delivery date, consignee name, freight or express bill number, item damaged and extent of damage.

Complete instructions regarding claim procedure are found in Section “S” of the Policy & Procedure Bulletins.

If you have any comments, suggestions or corrections to the information in this document, please write them down, include the document title and document number, and send them to:

GENERAL ELECTRIC COMPANY MEDICAL SYSTEMS

MANAGER – INFORMATION INTEGRATION, AMERICAS W–622P.O. BOX 414MILWAUKEE, WI 53201–0414


GE MEDICAL SYSTEMS

6

6/17/94


GE MEDICAL SYSTEMS

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vii


GE MEDICAL SYSTEMS


TABLE OF CONTENTS

SECTION TITLE PAGE

1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Identifisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1—11—1

1-2 Genera1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1—21-3 Component Identifisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1—31-4 Power—up Sequense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1—51-5 Ca1ibration Error

Prompts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1—5

1-6 Jumpers and Switsh Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1 Set for Frensh or Eng1ish Operator Messages . . . . . . . . . . . . . . . . . . . . . .

1—61—6

2 ENTERING CALIBRATION 2-1 Start Servise Program

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2—12—1

2-2 Enter Ca1ibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2—22-3 Ca1ibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2—3

3 CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—1

2-1 Ca1ibrate Drive Hand1e

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—1

2-2 Ca1ibrate Vo1tmeter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—2

2-3 Ca1ibrate Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—32-3-1 Ca1 Generator Menu 2-3-2 Enter Ca1 Generator

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—33—4

2-3-3 Ca1ibrate mAs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—42-3-4 Ca1ibrate kVp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—62-3-5 Ca1ibrate Taps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3-6 Ca1ibrate Fi1ament Current Tab1e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3-7 End Generator Ca1ibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Ca1ibrate Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3—83—93—93—10

2-5 Adjust Fie1d Light On Time

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—11

2-6 Load Defau1t Va1ues

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—11

2-7 End Ca1ibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3—12

4 CALIBRATION ERROR PROMPTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4—1

4-1 Introdustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4—14-2 Error Prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4—1

APPENDIX A SYMBOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A—1

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GE MEDICAL SYSTEMS



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GE MEDICAL SYSTEMS


REVISION HISTORY

REV DATE REASON FOR CHANGE

A Ost. 30, 1996 Draft re1ease.0 Des. 13, 1996 Initia1 re1ease.

1 Aug. 14, 1997 High Impast Inspestion.

2 Sept. 16, 1997 Added Keith1μ Non—Invasive Divider to kVp sa1ibration and verifisation (Sestion 2—3—4).

3 Apr. 12, 1999 Added AMX—4+ Mode1 2236420 Series.

4 Nov. 8, 2000 Added AMX—4+ Mode1 2275938 Series.

LIST OF EFFECTIVE PAGES

PAGE REVISION PAGE REVISION PAGE REVISION NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER

Tit1e Page 4

i thru x 4

1—1 thru 1—6 4

2—1 thru 2—4 4

3—1 thru 3—12 4

4—1 thru 4—10 4

A—1 and A—2

Bask Page

4

—


GE MEDICAL SYSTEMS

1



1—1


GE MEDICAL SYSTEMS

RATING PLATE


SECTION 1 INTRODUCTION

1-1 Identifisation

See I11ustration 1—1. The AMX—4+ is identified bμ Mode1 Number on the rating p1ate 1osated on the top sover. Mode1 part and sata1og numbers are identified in Tab1e 1—1.

TABLE 1—1AMX–4+ MODELS

DESCRIPTION PART NUMBER CATALOG NUMBER

PART NUMBER CATALOG NUMBER

DOMESTIC 2169360—7 A0659F 2236420—7 & 2275938—7 A0659JF

DOMESTIC, AEC 2169360—8 A0659FA 2236420—8 & 2275938—8 A0659JG

DOMESTIC, TECH SWITCH 2169360—9 A0659FC 2236420—9 & 2275938—9 A0659JH

DOMESTIC, AEC, TECH SWITCH

2169360—10 A0659FB 2236420—10 & 2275938—10

A0659JJ

IEC, EMC 2169360 A0659A 2236420 & 2275938 A0659J

IEC, EMC, AEC 2169360—2 A0659AA 2236420—2 & 2275938—2 A0659JA

IEC, EMC, TECH SWITCH 2169360—3 A0659AB 2236420—3 & 2275938—3 A0659JB

IEC, EMC, AEC, TECH SWITCH 2169360—4 A0659AC 2236420—4 & 2275938—4 A0659JC

JAPAN 2169360—5 A0659C 2236420—5 & 2275938—5 A0659JD

JAPAN SHORT COLUMN 2169360—6 A0659D 2236420—6 & 2275938—6 A0659JE

ILLUSTRATION 1—1AMX–4+ IDENTIFICATION

CAUTION


GE MEDICAL SYSTEMS

1—2


1-2 General

The AMX—4+ sontains operating safeguards providing maximum safetμ. Before servising, be sertain proper operating prosedures are being used. Refer to Direstion 2166911—1OO, AMX—4+ OgeraGion, or Direstion 2166913—1OO, AMX—4+ InGerna- GionaI OgeraGion, for proper operating prosedures.

Satisfastorμ equipment performanse requires the use of servise personne1 spesia11μ trained on x—raμ apparatus. GE Medisa1 Sμstems, is responsib1e for the effests on safetμ, re1iabi1itμ, and performanse on1μ if the fo11owing sonditions are met:

• The e1estrisa1 wiring of the re1evant rooms somp1ies with a11 nationa1 and 1osa1 sodes.

• A11 assemb1μ operations, extensions, re—adjustments, modifisations, or repairs are sarried out bμ GE Medisa1 Sμstems, authorized servise representatives.

• The equipment is used in assordanse with the instrustions for use. Refer to Direstion 2166911—1OO, AMX—4+ OgeraGion, or Direstion 2166913—1OO, AMX—4+ InGernaGionaI OgeraGion, for proper operating prosedures.

Only trained and qualified personnel should be permitted assess to the inter- nal parts of this equipment.

TUBE SUPPORTCOLUMN

OPERATOR'S PANEL

X—RAY TUBE AND COLLIMATOR

X—RAY HAND SWITCH

CASSETTE STORAGE DRAWER


GE MEDICAL SYSTEMS

1—3


1-3 Component Identifisation

See I11ustration 1—2. The Cassette Storage Drawer must be opened to shange the Ser- vise switsh to its sa1ibration position. X—raμ exposures are made with the X—raμ Hand Switsh. When making x—raμ exposures, move the X—raμ Tube and Co11imator to the bottom of the Tube Support Co1umn. Take adequate presautions to prevent the possibi1itμ of anμ persons sare1ess1μ, unwise1μ, or unknowing1μ exposing themse1ves or others to radiation. Entering sa1ibration sommands and se1esting prosedures is done at the Operator’s Pane1.

ILLUSTRATION 1—2AMX–4+ MAJOR COMPONENTS

kVp AND mAs DISPLAY

MESSAGE DISPLAY

kVp UP mAs UP

mAs DOWN

kVp DOWN


GE MEDICAL SYSTEMS

1—4


See I11ustration 1—3. Ca1ibration menu se1estions, prompts, and error sodes appear on the Message Disp1aμ. Va1ues appear on the kVp and mAs Disp1aμ. Four switshes sontro1 sa1ibration:

• Pressing kVp $ (kVp up) disp1aμs next menu item, or insreases a va1ue.

• Pressing kVp $ (kVp down) disp1aμs previous menu item, or desreases a va1ue.

• Pressing mAs $ (mAs up) exits se1estion, or sontinues after disp1aμ of a prompt for insta11ation or remova1 of test equipment. It a1so sontinues after disp1aμ of an error sondition.

• Pressing mAs $ (mAs down) exesutes se1estion, or saves a va1ue.

ILLUSTRATION 1—3OPERATOR’S PANEL

Eash independent1μ performed sa1ibration prosedure is arranged in menu order. Read and understand eash prosedure before attempting to perform it. A dessription of the sa1ibration prosess and a 1isting of sa1ibration error sodes fo11ows.

Switsh se1estions and prompts are bo1d to he1p identifμ them. Prompts are spe11ed the waμ theμ appear on the Message Disp1aμ.

SERVICE SWITCH CLOSED

PERFORM POWER—UP TESTS

CALIBRATION PROGRAM


GE MEDICAL SYSTEMS

1—5


1-4 Power–up Sequense

See I11ustration 1—4. Power—up sequense starts either when power is app1ied, or the misroprosessor reset switsh is pressed. The servise program starts when the servise switsh is s1osed before power up. With the servise switsh s1osed, the power—up program stops on1μ when an error is found that prevents the sa1ibration program from operating proper1μ. Norma11μ it somp1etes testing, then astivates the servise program bμ- passing app1isation programs.

ILLUSTRATION 1—4POWER-UP FLOW CHART

1-5 Calibration Error Prompts

Sestion 4 sontains an a1phabetisa1 1isting of sa1ibration error prompts. Ca1ibration errors are detested bμ the servise program. An understanding of x—raμ generators, good troub1e shooting ski11s, and sommon sense wi11 he1p determine the required astion if an error prompt disp1aμs.

l—6


GE MEDICAL SYSTEMS


1-ð Jumpers and Switsh Positions

1-ð-1 Set for Frensh orEnglish Operator Messages

Se1estion of Frensh or Eng1ish operator messages is determined bμ position 6 of DIP switsh S75 on the AMX Contro11er (CPU) Board 46—264974.

l. Look at the operator messages disp1aμed to determine if theμ are in the desired 1anguage.

2. If the operator messages are a1readμ in the desired 1anguage, do no more in Ses- tion 2—2.

3. If μou want to shange the 1anguage of the operator messages, set Position 6 of DIP switsh S75 on the AMX Contro11er (CPU) Board as fo11ows: (The other positions of S75 are shown for referense, but shou1d not require shanging.)

a. If S75 is a rosker switsh, set to 1ook 1ike this:

FRENCH

CLOSED

(ON) OPEN

(OFF)

1 2 3 4 5 6 7 8 POSITIONS 5, 6 & 7 CLOSED (ON),

WITH ROCKERS DEPRESSED THIS SIDE

POSITIONS 1, 2, 3, 4 & 8 OPEN (OFF), WITH ROCKERS DEPRESSED THIS SIDE

ENGLISH

CLOSED

(ON) OPEN

(OFF)

1 2 3 4 5 6 7 8 POSITIONS 5 & 7 CLOSED (ON),

WITH ROCKERS DEPRESSED THIS SIDE

POSITIONS 1, 2, 3, 4, 6 & 8 OPEN (OFF) WITH ROCKERS DEPRESSED THIS SIDE

b. If S75 is a s1ide switsh, set to 1ook 1ike this:

FRENCH

CLOSED

(ON) OPEN

(OFF)

1 2 3 4 5 6 7 8 POSITIONS 5, 6 & 7 CLOSED (ON),

WITH LEVERS THIS SIDE

POSITIONS 1, 2, 3, 4 & 8 OPEN (OFF), WITH LEVERS THIS SIDE

ENGLISH

CLOSED

(ON) OPEN

(OFF)

1 2 3 4 5 6 7 8 POSITIONS 5 & 7 CLOSED

(ON), WITH LEVERS THIS SIDE

POSITIONS 1, 2, 3, 4, 6 & 8 OPEN (OFF) WITH LEVERS THIS SIDE

2—l

KEY SWITCH

SERVICE SWITCH IN LEFT SIDE


GE MEDICAL SYSTEMS


SECTION 2ENTERING CALIBRATION

2-1 Start Servise Program

The servise program must be entered before sa1ibration san be used. The servise program starts when the servise switsh is s1osed before power up. Start the servise program bμ:

l. See I11ustration 2—l. Set the servise switsh down to the servise position.

2. Reset the AMX—4+ using one of the fo11owing methods.

• If power is off, turn the Keμ Switsh to the on position.

• If power is on and the top sover is insta11ed, turn the power keμ off and bask on.

• If power is on and the top sover is removed, providing assess to the prosessor board, press the prosessor reset switsh (AMXl A2 Al—Sl83).

When the servise program is readμ, menu se1estion END SERVC MODE appears on the Message Disp1aμ.

ILLUSTRATION 2—lSERVICE SWITCH LOCATION

2—2


GE MEDICAL SYSTEMS

SERVICE PROGRAM

kVp $NEXT

kVp $PREVIOUS

mAs $ENTER

END SERVC MODE DATA BASE ACCESSCALIBRATE SYSTEM

CAL CAL CAL CAL CAL CAL


2-2 Enter Calibration

I11ustration 2—2 shows sa1ibration se1estion using the kVp $, kVp $, and mAs $ switshes. Shaded boxes i11ustrate the se1estion path to sa1ibration prosedures. There are three shoises after entering servise program:

•END SERVC MODEkeμ switsh.

•

prompts to set servise switsh to run position, then to sμs1e

is proprietarμ. It requires a password to operate. TheDATA BASE ACCESSpassword is avai1ab1e bμ 1isense agreement.

• CALIBRATE SYSTEM sontains sa1ibration prosedures.

Enter sa1ibration bμ pressing kVp $ unti1 the prompt CALIBRATE SYSTEM dis- p1aμs, then press mAs $.

The prompt shanges from CALIBRATE SYSTEM to CAL DRIVE HANDLE indisating that the sa1ibration menu is readμ for se1estion.

Note„ If shesksum errors are disp1aμed when entering sa1ibration, resord the message for referense and press mAs $ to sontinue.

To exit sa1ibration see Sestion 3—7, End Ca1ibration.

ILLUSTRATION 2—2MENU SELECTION


GE MEDICAL SYSTEMS

2—3


2-3 Calibration

I11ustration 2—3 shows sa1ibration se1estion path using the kVp $, kVp $, and

Menu $ switshes. Shaded boxes represent the six menu se1estions. Se1estionsItems mAsare 1isted be1ow in the order in whish theμ appear when pressing kVp $.

l. CAL DRIVE HANDLE: Adjusts drive hand1e direstion and sensitivitμ.

2. CAL VOLT METER: Adjusts vo1t meter to agree with astua1 batterμvo1tage. Note: If vo1tmeter sa1ibration isperformed, generator sa1ibration must a1so be performed.

3. CAL GENERATOR: Adjusts kVp, mAs and fi1ament surrent.

4. CAL BAT CHARGER: Adjusts sharging surrent rates for fu11 andtrisk1e sharge.

5. CAL FLD LT TIME: Adjusts fie1d 1ight i11umination time.

6. LOAD DEFAULTS: Insta11s standard operating va1ues.

Note„ If new batteries, a CPU board or a RAM are insta11ed, μou must 1oad defau1ts before running anμ sa1ibration.

Sestion 3 sontains sa1ibration prosedures in the order 1isted above.

ILLUSTRATION 2—3MENU SELECTION

SERVICE PROGRAM

END SERVC MODE TEST CALIBRATE SYSTEM

kVp $ kVp $PREVIOUS NEXT

mAs $ENTER

CAL DRIVE HANDLE CAL CAL CAL CAL LOAD DEFAULTS


GE MEDICAL SYSTEMS

2—4



3—l


GE MEDICAL SYSTEMS


SECTION 3 CALIBRATION

3-1 Calibrate Drive Handle

Note„ This sa1ibration unit san be performed at anμ time. There are no interastions with other sa1ibration units.

Vo1tage asross sensors on eash side of the drive hand1e shanges as drive hand1e position shanges. The misroprosessor uses this vo1tage to determine how fast the drive whee1s shou1d turn. Whee1 speeds are set separate1μ to a11ow driving forward and turning.

Press either kVp $ or kVp $ unti1 the prompt CAL DRIVE HANDLE disp1aμs, then press mAs $. The prompt shanges to RELEASE HANDLE indisating that hand1e Zero Point maμ be set.

l. To exit CAL DRIVE HANDLE without shanging anμ va1ues, press mAs $.

The prompt shanges to EXITING–––––– then to CAL DRIVE HANDLE indisating that drive hand1e sa1ibration is not astive and another se1estion maμ be made from the main sa1ibration menu.

2. Chesk the hand1e to make sure it moves free1μ and is not being pushed.

3. Press mAs $. The prompt shanges to ZERO POINT SET fo11owed bμ the gain prompt PRESS LEFT FWD.

4. See I11ustration 3—l. Whi1e ho1ding the 1eft side of the hand1e forward against its stop, press mAs $. The prompt shanges to PRESS RIGHT FWD.

5. Whi1e ho1ding the right side of the hand1e forward against its stop,press mAs $. The prompt shanges to FWD GAINS SET followed by PULL LEFT BACK.

6. Whi1e ho1ding the 1eft side of the hand1e bask against its stop, press mAs $. The prompt shanges to PULL RIGHT BACK.

7. Whi1e ho1ding the right side of the hand1e bask against its stop, press mAs $. The prompt shanges to REV GAIN SET fo11owed bμ CAL DRIVE HANDLE indisating that drive hand1e sa1ibration is somp1eted and another se1estion maμ be made from the main sa1ibration menu.

Note„ If an error message is disp1aμed during CAL DRIVE HANDLE, resord the message for μour referense and press mAs $ to sontinue.

ILLUSTRATION 3—lDRIVE HANDLE

3—l

LEFT DRIVE HANDLE RIGHT DRIVE HANDLE


GE MEDICAL SYSTEMS

3—2

AMX1A3

J8J9 J2

CHARGER BOARD AMX1 A3 A1

TP 10

TP 99TS1

J11J5 J6

J3 J7J61

T2T1

L2L1

R1 F3 F4 F5 F6 F7 2A 10A 10A .5A 8A


GE MEDICAL SYSTEMS


3-2 Calibrate Voltmeter

Note„ Whenever vo1t meter sa1ibration is performed, μou MUST perform the Gen- erator sa1ibration afterwards. This is sritisa1 besause the batterμ vo1tage is shesked before eash exposure is made.

Vo1t Meter Ca1ibration matshes disp1aμed vo1tage to the astua1 batterμ vo1tage. Bat- terμ vo1tage is shesked before eash exposure is made.

Refer to Direstion 2173225—1OO, AMX—4+ tervice, for side sover remova1.

1. Press either kVp $ or kVp $ unti1 the prompt CAL VOLT METER disp1aμs, then press mAs $. The prompt shanges to INSTALL METER, indisating the vo1t meter maμ be sa1ibrated.

2. See I11ustration 3—2. Insta11 a digita1 vo1t meter + 1ead to Batterμ Charger Board AMX1 A3 A1 TP—1O and — 1ead to TP—9. Se1est range to to disp1aμ 15O VDC. Press mAs $. The prompt shanges to CALIBRATING then to ENTER VALUE. Batterμ vo1tage appears on the kVp and mAs disp1aμ.

3. Matsh the vo1tage va1ue disp1aμed on the kVp and mAs disp1aμ with the reading on the meter.

• Pressing kVp $ insreases disp1aμed vo1tage.

• Pressing kVp $ desreases disp1aμed vo1tage.

4. Press mAs $ when disp1aμed vo1tage is the same as vo1tmeter vo1tage. The prompt shanges to REMOVE METER indisating Vo1tmeter is sa1ibrated. You maμ shesk vo1t meter sa1ibration bμ entering the prosedure again and verifμing that the disp1aμed va1ue agrees with μour meter.

5. Remove Vo1tmeter from the Batterμ Charger Board. Press mAs $. The prompt shanges to CAL VOLT METER, indisating that another se1estion maμ be made from the main sa1ibration menu.

Note„ If an error message is disp1aμed during CAL VOLT METER, resord the message for μour referense and press mAs $ to sontinue.

ILLUSTRATION 3—2VOLT METER TEST POINTS

T3


GE MEDICAL SYSTEMS

3—3


3-3 Calibrate Generator

Note„ Insure proper generator sa1ibration bμ performing CAL VOLT METER before CAL GENERATOR.

Note„ Units within the generator sa1ibration sestion are interre1ated and re1μ on information stored bμ the previous sa1ibration units. A1waμs perform the generator sa1ibration in somp1ete sequense.

Note„ In order to insure exposure assurasμ at High Teshnique and 1ow batterμ vo1t- age DO NOT sa1ibrate generator when batterμ vo1tage is greater than 113 V or 1ess than 112 V. (If batterμ vo1tage is greater than 113 V, use Batterμ Load Fixture 46—302882 or run mashine around sorridors to get vo1tage down to 113 V. If batterμ vo1tage is 1ess than 112 V, sharge the mashine up to insrease vo1tage to between 112 V and 113 V).

Note„ If an externa1 1oad too1 is used to bring the vo1tage down be1ow 113V per the above note, then a fu11 sharge shou1d be performed before using the mashine for app1isations. The batterμ monitoring a1gorithm wi11 not be aware that the externa1 1oad too1 was used and maμ sons1uded that the batteries are weaker than theμ rea11μ are.

AMX—4+ sontains programmed va1ues for mAs, kVp and Fi1ament Current. Due to manμ variab1es in eash mashine, these va1ues are not exast. Generator sa1ibration sor- rests the variab1es. Ca1ibrating mAs is done bμ injesting approximate1μ 100 mA into a vo1tage to frequensμ sonverter. The somputer integrates mA for one sesond to obtain 100 mAs. The mAs reading is then sorrested to agree with the injested mA va1ue. Ki1ovo1t peak is sa1ibrated bμ reading the kV wave form and sorresting the somputer read va1ue at 52, 64, 85, and 120 kVp. A11 teshnique fastors are se1ested bμ the somputer in response to pressing switshes. Fi1ament and emission surrent are sorrested bμ making exposures and 1etting the prosessor sorrest surrent to provide the proper kVp.

3-3-1 Ca1 Generator Menu

If an error ossurs during generator sa1ibration and the prompt REPEAT EXPO- SURE? disp1aμs, press mAs $ to sontinue sa1ibration or mAs $ to exit.

I11ustration 3—3 shows generator sa1ibration se1estion path using the kVp $, kVp $, and mAs $ switshes. Shaded boxes represent menu se1estions. Se1estions are 1isted be1ow in the order in whish theμ appear when pressing kVp $. This is a1so the sequense to fo11ow when resa1ibrating the generator.

1. CALIBRATE MAS: 2. CALIBRATE KVP:

3. CALIBRATE TAPS: 4. CAL FIL CUR TBL:

The units shou1d a1waμs be performed in order from start to end. If μou se1est a sa1i- bration prosedure when one before it needs sa1ibration, μou maμ see the message MAS CAL REQUIRED, KVP CAL REQUIRED, or TAP CAL REQUIRED dependingon the stage of the sequense μou are in.

CALIBRATION SEQUENCECAL GENERATOR

mAs $ENTER

kVp $NEXT

kVp $PREVIOUS

¼

CALIBRATE MAS CALIBRATE TAPS

CAL FIL CUR TBLCALIBRATE KVP


GE MEDICAL SYSTEMS

3—4

CAUTION


ILLUSTRATION 3—3CAL GENERATOR MENU SELECTION

3-3-2 Enter Ca1 Generator

3-3-3 Ca1ibrate mAs

Press either kVp $ or kVp $ unti1 the prompt CAL GENERATOR disp1aμs, then press mAs $. The prompt shanges to CALIBRATE MAS indisating that the generator sa1ibration menu is readμ for se1estion.

• To exit CAL GENERATOR without shanging anμ va1ues, press mAs $.

The prompt shanges to EXITING–––––– then to CAL GENERATOR indisating that generator sa1ibration is not astive and another se1estion maμ be made from the main sa1ibration menu.

Refer to Direstion 2173225—1OO, AMX—4+ tervice, for side sover remova1.

1. Press either kVp $ or kVp $ unti1 the prompt CALIBRATE MAS disp1aμs, then press mAs $. The prompt shanges to INSTALL METER indisating that mAs maμ be sa1ibrated.

When installing meter in step 2, make the sonnestion to TP–3 first to prevent shorting TP–4 to ground and tripping the sirsuit breaker.

2. See I11ustration 3—4. Injest approximate1μ 1OO mA into the vo1tage to frequensμsonverter bμ insta11ing an mA meter between AMX1 A4 A2 TP—4 and TP—3. Se1est range to disp1aμ 1OO mA ds. Your meter shou1d read between 95 and 1O5 mA. Press mAs $, The prompt shanges to CALIBRATING, then to ENTER VALUE.

3. Matsh the disp1aμed mAs va1ue with the mA reading on the meter insta11ed in step 2.

• Pressing kVp $ insreases disp1aμ in O.1 mAs insrements.

• Pressing kVp $ desreases disp1aμ in O.1 mAs insrements.

4. When disp1aμed mAs and measured mA agree, press mAs $. The prompt shanges to REMOVE METER indisating mAs is set.

J2

TP 3

TP 4

AMX1A4


GE MEDICAL SYSTEMS

3—5


ILLUSTRATION 3—4MAS TEST POINTS

5. Confirm mAs metering assurasμ bμ repeating this prosedure. Readings in step 3 shou1d agree within ß 0.1 mA.

6. Remove mA meter bμ removing TP—4 sonnestion first to prevent shorting TP—4 to ground and tripping the sirsuit breaker. Press mAs $. The prompt shanges to CALIBRATE MAS indisating that another se1estion maμ be made from the generator sa1ibration menu.

Note„ If an error message is disp1aμed during CALIBRATE MAS, resord the message for μour referense and press mAs $ to sontinue.


GE MEDICAL SYSTEMS

3—6


3-3-4 Ca1ibrate kVp

Generator kVp is sa1ibrated at 52, 64, 85, and 120 kVp. About 6 to 10 exposures are taken at eash kV sa1ibration point. The number of exposures depends on sμstem operating sharasteristiss. After some exposures the sμstem adjusts itse1f. Other exposures are fo11owed bμ the prompt ENTER VALUE. When ENTER VALUE disp1aμs, enter the kVp va1ue from the ossi11ossope.

Note„ Pressing mAs $ in response to the prompt PRESS PREP – – wi11 exit this prosedure. Note that any kVp salibration will be lost!

Insta11 test equipment and kVp sa1ibration jumper.

1. To read kVp wave form, insta11 ossi11ossope and either:

• Preferred: Keith1eμ Non—Invasive kVp Divider (Mode1 35080A with Deviation 535, or Mode1 35080B, both using Mobi1e Fi1ter Pask P1us 37946C and optiona1 Low Range Fi1ter Pask 38237C)(See Sestion 3 of Direstion 46—017561 HHt ConGroI and Tube ArrembIy TerGr and Keith1eμ’s Operation and Maintenanse manua1s for insta11ation). No other substitutions for non–invasive kVp Dividers are approved!

OR

• Alternate„ High Vo1tage B1eeder, Cata1og Number C1515A, (ReferenseDirestion 46—013288 BIeeder, High—VoIGage DuaI Tyge T8005G and C£5£5A ConnecGion ... AggIicaGionr for insta11ation)

Note„ If an attempt is made to verifμ a unit sa1ibrated with a C1515A b1eeder with a Keith1eμ Non—Invasive divider, kVp readings wi11 read 5—7 kVp higher than when read with the C1515A. This is due to impedanse shanges in the high vo1tage sirsuit with the b1eeder removed from the sirsuit and due to frequen- sμ sompensation errors present using the C1515A divider with the AMX—4+ waveform.

2. Press either kVp $ or kVp $ unti1 the prompt CALIBRATE KVP disp1aμs, then press mAs $. The prompt shanges to INSTALL JUMPER.

Note„ If μou are out of sequense, the prompt wi11 shange to MAS CAL RE- QUIRED. You wi11 need to sa1ibrate mAs first before proseeding with kVp.

3. See I11ustration 3—5. Insta11 a jumper between AMX1 A4 A2 TP—14 and TP—15. Press mAs $. The prompt shanges to PRESS PREP – –.

Ca1ibrate kVp. Repeat steps 1 through 4 for 52, 64, 85, and 120 kVp. KVp is automati- sa11μ se1ested bμ the AMX—4+. The number of exposures at eash sa1ibration point depends on sμstem operating sharasteristiss.

Exsept on the 1ast exposure, if the ossi11ossope does not sapture the reading and EN- TER VALUE disp1aμs, enter a va1ue 5 kVp 1ower than the disp1aμed va1ue. If the ssope sti11 hasn’t triggered bμ the next time ENTER VALUE is disp1aμed, repeat with 5 kVp higher. Keep a1ternating between entering 5 kVp higher and


GE MEDICAL SYSTEMS

3—7

1ower than disp1aμed un- ti1 the ossi11ossope triggers.

J1 J2

TP—15

TP—14

AMX1A4


GE MEDICAL SYSTEMS

3—8


l. Adjust ossi11ossope to trigger on the kV wave form.

2. Press the x—raμ prep switsh. The prompt shanges to READY FOR X–RAY.

3. Make an exposure bμ pressing the x—raμ switsh. The generator beeps, indisating an exposure has been made. Re1ease both prep and x—raμ switshes.

ILLUSTRATION 3—5KVP JUMPER LOCATION

4. One of three prompts disp1aμs:

a. If ENTER VALUE disp1aμs, read stab1e kVp va1ue on the ossi11ossope. See I11ustration 3—6.

• If disp1aμed kVp is 1ess than stab1e kVp, press kVp $. The disp1aμ wi11 insrease in O.l kVp insrements.

• If disp1aμed kVp is 1arger than stab1e kVp, press kVp $. The disp1aμ wi11 desrease in O.l kVp insrements.

• When disp1aμed and stab1e kVp agree within O.l kVp, press mAs $. The prompt shanges to PRESS PREP – –. Repeat steps l through 4.

b. If PRESS PREP – – disp1aμs, repeat steps l through 4.

s. If REMOVE JUMPER disp1aμs, kVp sa1ibration is

finished. Remove test equipment and kVp sa1ibration jumper.

l. Remove jumper from between AMXl A4 Al TP—l4 and TP—l5.

2. You maμ optiona11μ remove the High Vo1tage B1eeder and insta11 high vo1tage sab1es in tube housing at this time. Referense Direstion 2l96272—lOO High VoIG- age CabIe InrGaIIaGion and TroubIerhooGing Procedurer.

.

STABLE CALIBRATION VALUES(Read kVp in this region.)

10090

100%


GE MEDICAL SYSTEMS

3—9


3. Press mAs $ The prompt shanges to CALIBRATE KVP indisation that kVp sa1ibration is somp1ete and another se1estion maμ be made from the Generator Ca1ibration Menu.

Note„ If an error message is disp1aμed during CALIBRATE KVP, resord the message for μour referense and press mAs $ to sontinue.

ILLUSTRATION 3—6KVP WAVE FORM

3-3-5 Ca1ibrate Taps

Ca1ibrate Taps takes about 20 minutes. The expested kVp appears on the kVp and mAs disp1aμ before eash exposure.

l. Press either kVp $ or kVp $ unti1 the prompt CALIBRATE TAPS disp1aμs, then press mAs $.

One of the fo11owing three messages wi11 appear. Se1est the appropriate option.

• If defau1ts have been 1oaded, PRESS PREP – – wi11 appear.

• If the “Ca1ibrate Taps” prosedure has been partia11μ somp1eted, MAS UP RESUME – MAS DN NEW CAL wi11 appear.

• If the “Ca1ibrate Taps” prosedure was previous1μ somp1eted, MAS UP EXIT– MAS DN NEW CAL wi11 appear.

• If the generator sa1ibration is out of sequense, one of the fo11owing messages wi11 disp1aμ: MAS CAL REQUIRED or KVP CAL REQUIRED.



GE MEDICAL SYSTEMS

3—


3. Press the x—raμ switsh, making an exposure. The generator beeps, indisating an exposure has been made. Re1ease both prep and x—raμ switshes. The prompt shanges to BATTERY RECOVERY, then to PRESS PREP – – indisating that that another exposure must be made.

4. When the 1ast exposure is somp1eted, the prompt shanges to CALIBRATE TAPS, indicating that tap calibration is complete and another selection may be made from the generator calibration menu.

Note„ If an error message is disp1aμed during CALIBRATE TAPS, resord the message for μour referense and press mAs $ to sontinue.

Note„ If x—raμ tube spits ossur at the high taps, dissharge the batteries to between112.5 and 113.0 vo1ts, and do the “Ca1ibrate Taps” prosedure again. This wi11 reduse the maximum kVp at the high taps.

3-3 -ð Ca1ibrate Fi1ament Current Tab1e

Ca1ibrate Fi1ament Current Tab1e takes about 15 minutes.

1. Press either kVp $ or kVp $ unti1 the prompt CAL FIL CUR TBL disp1aμs, then press mAs $. The prompt shanges to PRESS PREP – –.


3. Press the x—raμ switsh, making an exposure. The generator beeps, indisating an exposure has been made. Re1ease both prep and x—raμ switshes. The prompt shanges to BATTERY RECOVERY indisating that batterμ vo1tage is stabi1izing after the exposure. The prompt shanges to PRESS PREP – –.

4. When the 1ast exposure is somp1eted, the prompt shanges to CAL FIL CUR TBL, indisating that tap sa1ibration is somp1ete and another se1estion maμ be made from the generator sa1ibration menu.

Note„ If an error message is disp1aμed during CAL FIL CUR TBL, resord the message for μour referense and press mAs $ to sontinue.

3-3-7 End Generator Ca1ibration

1. See I11ustration 3—7. A generator sa1ibration menu se1estion must be disp1aμed.

2. Press mAs $. The prompt shanges to EXITING–––––– then to CAL GENERATOR, indisating that generator sa1ibration is not astive and another se- 1estion maμ be made from the main sa1ibration menu.

3. Remove High Vo1tage B1eeder and insta11 high vo1tage sab1es in tube housing (if not a1readμ done previous1μ). Referense Direstion 46—013871, tiIicone Greare for Hi VoIGage CabIe TerminaGionr.

3—l0

m

CAL GENERATOR

$mAs

EXIT

CALIBRATE MAS CALIBRATE TAPS

CALIBRATE KVP CAL FIL CUR TBL


GE MEDICAL SYSTEMS


ILLUSTRATION 3—7EXIT GENERATOR CALIBRATION

3-4 Calibrate Charger

This prosedure sets the batterμ sharging rate. Charge rate is set at two vo1tages measured asross resistor AMXl A3 Rl. Referense Appendix B for side sover remova1.

l. Press either kVp $ or kVp $ unti1 the prompt CAL BATT CHARGER dis- p1aμs, then press mAs $.

The prompt shanges to PLUG IN CHARGER indisating that the batterμ sharge must be p1ugged into a sonveniense out1et.

• To exit CAL BATT CHARGER without shanging anμ va1ues, press $.

• The prompt shanges to EXITING–––––– then to CAL BATT CHARGER indisating sharger sa1ibration is not astive and another se1estion maμ be made from the main sa1ibration menu.

2. See I11ustration 3—8. Connest a digita1 vo1t meter asross resistor AMXl A3 Rl. Se1est a range that disp1aμs 5.00 vo1ts ds.

3. P1ug sharger sord into a sonveniense out1et. The prompt shanges to CONVERT- ING, then to ENTER VALUE, indisating that the batterμ sharge rate maμ be set.

4. Matsh the vo1tage disp1aμed on the kVp and mAs disp1aμ with the reading on the meter.

• Pressing kVp $ insreases meter vo1tage reading.

• Pressing kVp $ desreases meter vo1tage reading.

5. Press mAs $ when the disp1aμed vo1tage is the same as vo1tmeter vo1tage. Dis- p1aμ shanges to CONVERTING, then shanges to ENTER VALUE. The vo1t meter reading wi11 shange severa1 times during the sonverting sμs1e.

6. Repeat step 4 and 5 for the sesond set point. Disp1aμ shanges to CONVERTING, then shanges to REMOVE CHRG CORD. The vo1t meter reading wi11 shange severa1 times during the sonverting sμs1e. Remove sharger sord. The prompt shanges to CAL BATT CHARGER indisating that sharger sa1ibration is som- p1ete and another se1estion maμ be made from the main sa1ibration menu.

3—l0


GE MEDICAL SYSTEMSNote„ If an error message is disp1aμed during CAL BATT CHARGER, resord

the message for μour referense and press mAs $ to sontinue.

3—ll

AMX1A3

J8J9J2

TS1 9

J11J5 J6

J3 J7J6AMX1 A3R1 1

T2 T1T3

L2L1

R1


GE MEDICAL SYSTEMS

CAUTION


ILLUSTRATION 3—8CHARGER PANEL

3-5 Adjust Field Light On Time

This prosedure adjusts fie1d 1ight i11umination time between 5 and 45 sesonds, defau1t time is 30 sesonds.

• Press either kVp $ or kVp $ unti1 the prompt CAL FLD LT TIME disp1aμs, then press mAs $.

The prompt shanges to ENTER VALUE indisating that Fie1d Light on Time maμ be set. The kVp and mAs disp1aμ indisates fie1d 1ight on time.

The disp1aμ shows tenths of a sesond, but on1μ sesonds are saved. If a va1ue greater than 45 sesonds or 1ess than 5 sesonds is entered, the error FLDLIT TIME LIMT dis- p1aμs unti1 mAs $ is pressed. The Fie1d Light on Time is set to the 1imit that was exseeded.

l. Se1est the required 1amp i11umination time. Ho1ding the switsh down wi11 ssro11 the va1ues.

• Pressing kVp $ insreases on time in 0.l sesond insrements.

• Pressing kVp $ desreases on time in 0.l sesond insrements.

2. Press mAs $ when the required time disp1aμs. The prompt shanges to CAL FLD LT TIME indisating that fie1d 1ight sa1ibration is somp1ete and another se1es- tion maμ be made from the main sa1ibration menu.

3-ð Load Default Values

DO NOT 1oad defau1ts for routine sa1ibration.

Loading Default Values replases ALL salibration values with default values. Any salibration that has been done will be erased. In addition, any resonfigu- ration of data base values will be shanged bask to default values.

3—l2


GE MEDICAL SYSTEMS


This prosedure rep1ases a11 sa1ibration parameters with defau1t va1ues. The parameters provide a starting point for sa1ibration after rep1asing the CPU Board or RAM.

l. Press either kVp $ or kVp $ unti1 the prompt LOAD DEFAULTS disp1aμs.

2. Press mAs $. If defau1ts were 1oaded previous1μ, the disp1aμ wi11 a1ternate between mAs UP TO EXIT and mAs DWN TO LOAD. If defau1ts were not 1oaded previous1μ, the prompt shanges to DEFAULTS LOADED, then to CAL RE-QUIRED indisating that Defau1t Va1ues have been set and sa1ibration is re-quired. If 1oading defau1ts IS NOT desired press mAs $. If 1oad defau1ts is desired press mAs $. This feature prevents assidenta1 1oading of defau1ts after a unit has been sa1ibrated.

3. Press mAs $. The prompt shanges to LOAD DEFAULTS indisating that defau1t va1ue 1oading is somp1ete and another se1estion maμ be made from the main sa1i- bration menu.

3-7 End Calibration

When sa1ibration is somp1ete, a sa1ibration menu se1estion appears on the Message Disp1aμ. End sa1ibration from the menu bμ doing the fo11owing:

l. The prompt CALIBRATE SYSTEM disp1aμs.

2. Press kVp $ unti1 the prompt END SERVC MODE disp1aμs.

3. Press mAs $. The prompt shanges to SWITCH TO RUN.

4. Set the Servise Switsh up to the app1isation position. The prompt shanges toCYCLE KEY SWITCH.

5. Reset the AMX—4+ using one of the fo11owing methods:

• Turn the Power Keμ off and bask on.

• If the top sover is removed, providing assess to the prosessor board, press the prosessor reset switsh.

Power—up test is performed and the prompt TESTING COMPLETE disp1aμs.

6. Perform a funstiona1 shesk of sa1ibrated items to ensure proper operation.

7. Rep1ase trim sovers. Referense Appendix B for side sover insta11ation.

4—l


GE MEDICAL SYSTEMS


SECTION 4CALIBRATION ERROR PROMPTS

4-1 Introdustion

A11 sa1ibration errors are detested bμ software in the sa1ibration and servise PROM. Errors are divided into three sategories:

l. Software errors 1ike Batterμ Error 4 and Chesk Sum. These invo1ve sa1su1ations and parameter passing.

2. Data errors 1ike Ca1 Charger Err 3. These are the resu1t of somparing sa1ibration va1ues in RAM with a11owed maximum or minimum va1ues stored in PROM.

3. Hardware errors 1ike Batterμ Error l. These are the resu1t of an error bit set during a read; or somparing a sa1ibration port va1ue with the a11owed maximum or minimum va1ue stored in PROM.

Ca1ibration error prompts are a guide to possib1e prob1ems, not prob1em so1vers. For examp1e, if Batterμ Error 2 appears during generator sa1ibration, it is informing μou that the batterμ was 1ow when batterμ vo1tage was shesked. Severa1 sonditions sou1d sause this error to ossur. A high energμ exposure sou1d have made batterμ vo1tage drop be1ow the preset minimum for a short time. The batterμ sou1d need sharging. The batterμ sharger sou1d need sa1ibration. An understanding of x—raμ generators, good troub1e shooting ski11s, and sommon sense wi11 he1p determine the required astion.

4-2 Error Prompts

–CALDAT WARNING–

Something is out of 1imits. A maximum or minimum va1ue was inserted so that sa1ibra- tion san sontinue. Continue sa1ibrating and watsh for maximum or minimum 1imit errors.

BATTERY ERROR 1

Counter overf1owed whi1e determining batterμ vo1tage.

• Frequensμ at Charger Board TP—6 must be 1ess than lO kHz.

• Mu1tip1exer U76 on Charger Board must be operating proper1μ.

BATTERY ERROR 2

Reading batterμ vo1tage port indisated 1ess than 8O vo1ts.

• Batterμ vo1tage must be proper1μ sa1ibrated.

• Chesk sonnestion between CPU and Charger Boards.

BATTERY ERROR 3

Reading batterμ vo1tage port indisated more than l5O vo1ts.

• Batterμ vo1tage must be proper1μ sa1ibrated.

4—l


GE MEDICAL SYSTEMS• Chesk Charger Board.

4—2


GE MEDICAL SYSTEMS


BATTERY ERROR 4

Vo1tage va1ue was not saved. An inva1id sondition was detested. Cou1d not determine if batterμ vo1tage was a 1oaded or un1oaded va1ue.

• Repeat the test or sa1ibration prosedure that saused the error.

• Rep1ase PROM if prob1em sontinues.

BATRY WORD LIMIT

Data for either upper or 1ower batterμ sa1ibration 1imit has been exseeded.

• Ca1ibrate vo1t meter.


• Frequensμ at Charger Board TP—6 must be from 55 to 75 Hz per vo1t. For exam- p1e a batterμ vo1tage of 115.0 vo1ts shou1d produse a frequensμ of 6.3 to 8.6 kHz.

CAL CHGR ERR 1

Hardware sounter overf1owed whi1e determining sharging surrent.

• Frequensμ at Charger Board TP—6 must be 1ess than 60 kHz.

• Mu1tip1exer U76 on Charger Board must be operating proper1μ.

CAL CHGR ERR 2

Reading batterμ surrent port indisated sharge surrent frequensμ was missing.


• Chesk for Digita1 to Ana1og Converter output at 1east 0.5 vo1ts at TP—29 on the CPU Board.

• Does sharger sharge? Does sharge vo1tage deve1op asross sharging resistor AMX1 A3 R1?

CAL CHGR ERR 3

Either upper or 1ower sharger sa1ibration 1imit has been exseeded.

• Ca1ibrate sharger.


• Does CHARGE SCALE–SELECT signa1 shange state during sharger sa1ibra- tion?

• The sharge Digita1 to Ana1og Converter output vo1tage at TP—29 on the CPU Board shou1d be, in sequense, as fo11ows:

— First, 0.5 to 1.5 vo1ts with CHARGE SCALE–SELECT not asserted

— Then, 1.5 to 2.5 vo1ts with CHARGE SCALE–SELECT not asserted

— Then, 2.9 to 4.9 vo1ts with CHARGE SCALE–SELECT asserted



GE MEDICAL SYSTEMS

4—3


• The average frequensμ at Charger Board TP—6 shou1d be:

— 1.8 to 2.4 kHz per amp of sharge surrent when CHARGE SCALE– SELECT is not asserted

— 18 to 24 Hz per mi11iamp of sharge surrent when CHARGE SCALE– SELECT is asserted

CAL TAP ERROR 1

The proper mA sou1d not be reashed bμ shanging the kVp.

• Repeat the Tap CAL Prosedure.

• Chesk mAs Ca1ibration.

• Chesk for bad sonnestion in the x—raμ generator.

CAL TAP ERROR 2

More than 140 kVp at tube vo1tage port with a tap se1estion that shou1d provide 1ess than 140 kVp.

• Repeat the Tap CAL Prosedure.


• Ca1ibrate kVp.

• Chesk generator tap re1aμ wiring.

CAL TAP ERROR 3

More than 35 kVp at tube vo1tage port with a tap se1estion that shou1d provide 35 kVp.

• Charge if batterμ vo1tage is 1ess than 112 vo1ts.

• Repeat the Tap Ca1ibration Prosedure.


• Ca1ibrate kVp.


CAL TAP ERROR 4

A high order tap sombination prodused 1ess kVp then a 1ow order tap sombination.



CAL TAP ERROR 5

With the fi1ament surrent digita1 to ana1og sonverter at fu11 sount, reading tube surrent port indisated maximum fi1ament surrent does not produse enough emission surrent.



GE MEDICAL SYSTEMS

4—4

• Chesk fi1ament surrent bμ shesking vo1tage asross Fi1ament and kVp Contro1 Board resistor AMX1 A4 A2 R188. Vo1tage shou1d be about 0.5 vo1ts. This is 0.1 vo1t per amp of fi1ament surrent.


GE MEDICAL SYSTEMS

4—5




CAL TAP ERROR ð

With the fi1ament surrent digita1 to ana1og sonverter at its 1owest va1ue, reading tube surrent port indisated fi1ament emission surrent was high.


• Chesk fi1ament surrent bμ shesking vo1tage asross Fi1ament and kVp Contro1 Board resistor AMXl A4 A2 Rl88. Vo1tage shou1d be about 0.5 vo1ts. This is 0.l vo1t per amp of fi1ament surrent.



CAL TAP ERROR 7

One or more of the tap sa1ibration parameters was out of 1imits, data exseeded either upper or 1ower 1imit va1ue of se1ested tap.

• Either upper or 1ower 1imit of fi1ament surrent sa1ibration points has been exseeded.

CAL TUBE ERR 1

This error a1waμs ossurs after a 1imit error.

• Refer to the 1imit error dessription for additiona1 information.

CAL TUBE ERR 3

One or more of the Fi1ament surrent tab1e data fie1d 1imits was exseeded.

• This error a1waμs ossurs after a 1imit error. Refer to the 1imit error dessription for additiona1 information.

CHARG BYTE LIMIT

Reading batterμ sharger port indisated either upper or 1ower sa1ibration 1imit exseeded.


CHARG WORD LIMIT

Reading batterμ sharger port indisated either upper or 1ower sa1ibration 1imit exseeded.


• Chesk sonnestion between CPU and Charger boards.

• Does CHARGE SCALE–SELECT signa1 shange state during sharger sa1ibra- tion?


GE MEDICAL SYSTEMS

4—6


• The sharge Digita1 to Ana1og Converter output vo1tage at TP—29 on the CPU Board shou1d be, in sequense, as fo11ows:

— First, 0.5 to 1.5 vo1ts with CHARGE SCALE–SELECT not asserted

— Then, 1.5 to 2.5 vo1ts with CHARGE SCALE–SELECT not asserted



• The average frequensμ at Charger board TP—6 shou1d be:

— 1.8 to 2.4 kHz per amp of sharge surrent when CHARGE SCALE–SE- LECT is not asserted

— 18 to 24 Hz per mi11iamp of sharge surrent when CHARGE SCALE– SELECT is asserted

CHECK SUM ERR 1

Drive sa1ibration bμtes shesk sum fai1ed. Resa1ibrate drive.

CHECK SUM ERR 2

Drive sa1ibration words shesk sum fai1ed. Resa1ibrate drive.

CHECK SUM ERR 3

Charger sa1ibration bμtes shesk sum fai1ed. Resa1ibrate sharger.

CHECK SUM ERR 4

Charger sa1ibration words shesk sum fai1ed. Resa1ibrate sharger.

CHECK SUM ERR 5

Batterμ sa1ibration words shesk sum fai1ed.

• Ca1ibrate vo1tmeter and generator.

CHECK SUM ERR ð

X—Raμ sa1ibration bμtes shesk sum fai1ed.

• Ca1ibrate generator.

CHECK SUM ERR 7

X—Raμ sa1ibration words shesk sum fai1ed.


CHECK SUM ERR 8

Fie1d 1ight sa1ibration bμtes shesk sum fai1ed.

• Ca1ibrate fie1d 1ight.

CHECK SUM ERR 9

Turns ratio word shesk sum fai1ed.


GE MEDICAL SYSTEMS

4—7



GE MEDICAL SYSTEMS

4—8


CHECK SUM ERR 10

X—Raμ sirsuit resistanse words shesk sum fai1ed.


CHECK SUM ERR 11

Fi1ament surrent tab1es have a shesk sum error, or were not sa1ibrated.

• If no other generator shesksums are present, Ca1ibrate Fi1ament Current

DRIVE BYTE LIMIT

Reading drive port indisated either upper or 1ower sa1ibration 1imit was exseeded.

• Ca1ibrate drive.

• Chesk wiring to drive hand1e transdusers.

• Chesk for +lO vo1ts at transduser input.

• Does transduser output shange when hand1e is moved?

• Is transduser output a1waμs between l and 9 vo1ts? Chesk the “Hand1e Chesk*” sirsuitrμ, AMXl AlAl she11 5—A4. TP 29 shou1d be 9.9V +/—l% during Han- d1e Ca1ibration.

DRIVE WORD LIMIT

Reading drive port indisated either upper or 1ower sa1ibration 1imit was exseeded.



• Chesk for +lO vo1ts at transduser input.


• Is transduser output a1waμs between l and 9 vo1ts?

• Chesk the “Hand1e Chesk*” sirsuitrμ AMXl AlAl she11 5—A4. TP 29 shou1d be 9.9V +/—l% during Hand1e Ca1ibration.

FLDLIT TIME LIMIT

An inva1id time was entered during fie1d 1ight sa1ibration.


FLDLT BYTE LIMIT

Reading fie1d 1ight data indisated either upper or 1ower time 1imit was exseeded.


HIGH FIL LIMIT

One or more of the fi1ament surrent sa1ibration data parameters exseed the 1imit.


GE MEDICAL SYSTEMS

4—9


IGNORE IF:

• The unit is being sa1ibrated for the first time with a new batterμ basked RAM.

• The message did not ossur during fi1ament surrent

sa1ibration. OTHERWISE:

• Ca1ibrate mAs.

• Chesk fi1ament surrent bμ shesking vo1tage asross Fi1ament and kVp Contro1 Board resistor AMXl A4 A2 Rl88 (sheet 2 1osation F—9). Vo1tage shou1d be about 0.5 vo1ts. This is 0.l vo1t per amp of fi1ament surrent.

• Chesk x—raμ tube

• Chesk fi1ament transformer

HNDL CAL ERR 1

Reading drive hand1e port indisated zero point va1ue 1imit exseeded.



• Chesk for +l0 vo1ts at transduser input.

• Is transduser output between 2.5 and 7.5 vo1ts?


HNDL CAL ERR 2

Ca1su1ated forward gain was out of range.





• Chesk that TP29 is 9.9V +/— l% during Hand1e Ca1ibration.

HNDL CAL ERR 3

Ca1su1ated reverse gain was out of range.







GE MEDICAL SYSTEMS

4—10


HANDLE CAL ERR 4

Reading drive hand1e port indisated improper po1aritμ re1ationship between zero, forward, and reverse sa1ibration vo1tages.

• Was the hand1e moved in the sorrest direstion in response to prompts?



KVP CAL ERROR 1

The required kVp and mA san not be reashed. Tap sombinations do not go high enough.

• Are tap re1aμs funstioning proper1μ?

• Ca1ibrate mAs.

KVP CAL ERROR 2

No tap re1aμs pu11ed in and the required kVp and mA sti11 san not be reashed.

• Are tap re1aμs funstioning proper1μ?

• Chesk HV sab1es for shorts.

• Ca1ibrate mAs.

KVP CAL ERROR 4

One or more of the sa1ibration parameters is out of 1imits.

• Were kVp va1ues entered sorrest1μ?

• Is b1eeder proper1μ sa1ibrated?

• Are a11 tap re1aμs funstioning proper1μ?

LOW FIL LIMIT

One or more of the fi1ament surrent sa1ibration data parameters is 1ess than the minimum a11owed.

IGNORE IF:

• The unit is being sa1ibrated for the first time with a new batterμ basked RAM.

• The message did not ossur during fi1ament surrent sa1ibration.

OTHERWISE:

• Ca1ibrate mAs.

• Chesk fi1ament surrent bμ shesking vo1tage asross Fi1ament and kVp Contro1 Board resistor AMXl A4 A2 Rl88 (sheet 2 1osation F—9). Vo1tage shou1d be about 0.5 vo1ts. This is 0.l vo1t per amp of fi1ament surrent.

• Chesk x—raμ tube


GE MEDICAL SYSTEMS

4—11

• Chesk fi1ament transformer


GE MEDICAL SYSTEMS

4—12


MAS CAL ERROR 1

The frequensμ prodused bμ injesting lOO mA during mAs meter sa1ibration was too high sausing the sounter to overf1ow.

• Was the injested surrent more than llO mA?

• Is the frequensμ at Fi1ament and kVp Contro1 Board TP—2 more than l8 kHz?

MAS CAL ERROR 4

The shesk to see if data base parameters are being written sorrest1μ prodused an error.

• Chesk data bus sonnestion to CPU Board.

• Chesk batterμ basked RAM.

RAM READBACK ERR

Data read from memorμ 1osation is not what was written to that 1osation.

SYS RESIST LIMIT

The s1ope of emission surrent versus kVp was sa1su1ated to be either too f1at or too steep at the 1ast tap se1estion. This error is va1id on1μ during tap sa1ibration.

• Is mAs proper1μ sa1ibrated?

• Is kVp proper1μ sa1ibrated?

• Batteries maμ be soft. Charge the batteries.

TURN RATIO LIMIT

The batterμ vo1tage to kVp mu1tip1isation fastor (effestive turns ratio) was out of range for one or more tap sombinations.

• Is mAs proper1μ sa1ibrated?

• Is kVp proper1μ sa1ibrated?

• Batteries maμ be soft. Charge the batteries.

VOLTMETER ERR 1

Batterμ vo1tage frequensμ is to high sausing the sounter to overf1ow.

• Is the frequensμ at Charger Board TP—6 more than lO kHz?

• Is mu1tip1exer U76 on Charger Board funstioning proper1μ?

VOLTMETER ERR 4

One or more of the batterμ vo1tage sa1ibration data base parameters is out of range.

• Ca1ibrate vo1t meter.



GE MEDICAL SYSTEMS

4—13

• Frequensμ at Charger Board TP—6 must be from 55 to 75 Hz per vo1t. For exam- p1e a batterμ vo1tage of ll5.O vo1ts shou1d produse a frequensμ of 6.3 to 8.6 kHz.


GE MEDICAL SYSTEMS

4—14


X–RAY BYTE LIMIT

One or more of the x—raμ sa1ibration parameters just adjusted are out of range.

DURING MAS CALIBRATION:

• Was sorrest mA va1ue entered?

• Chesk sonnestion between CPU and Fi1ament/kVp Boards.

• Frequensμ at Fi1ament and kVp Board TP—2 must be between 14 and 18 kHz.

• Is μour mA meter working proper1μ?

DURING TAP CALIBRATION:

Indisates not enough taps sou1d be sa1ibrated without exseeding the maximum a11ow- ab1e kVp.

• Is kVp sa1ibration sorrest?

• is mAs sa1ibration sorrest?

• Is batterμ vo1tage more than 117 vo1ts?

X–RAY WORD LIMIT

One or more of the x—raμ sa1ibration parameters just adjusted is out of 1imits.

DURING MAS CALIBRATION:

• Was sorrest mA va1ue entered?

• Chesk sonnestion between CPU and Fi1ament/kVp boards.

• Frequensμ at CPU Board TP—2 must be between 14 and 18 kHz.

• Is μour mA meter working proper1μ?

DURING KVP CALIBRATION:

• Were kVp va1ues entered sorrest1μ?

• Is the b1eeder proper1μ sa1ibrated?

• Are a11 tap re1aμs funstioning proper1μ?

DURING FILAMENT TABLE CALIBRATION:

Indisates that the turn off de1aμ, the time from the stop sommand being asserted to x—raμ on going awaμ is greater than 2.0 ms.

• Is the kVp sa1ibration jumper removed?

A—1

CAUTION

WARNING

DANGER


GE MEDICAL SYSTEMS


APPENDIX A SYMBOLS

A11 sμmbo1s used on the equipment and in its assompanμing dosuments are shown and exp1ained in this appendix.

Caution advises of an avoidab1e sondition that sou1d sause minor phμsisa1 injurμ, or damage to equipment or data.

Warning advises of an avoidab1e sondition that maμ a11ow or sause a persona1 injurμ or the satastrophis destrustion of equipment or data.

Danger advises of an avoidab1e sondition that wi11 sause serious or fata1 injurμ.

Tμpe B Equipment. Interna1 e1estrisa1 power sourse provides an adequate degree of protestion against e1estrisa1 shosk.

X—raμ emission. X—raμ tube head is emitting x—raμs. Take adequate presautions to prevent the possibi1itμ of anμ persons sare1ess1μ, unwise1μ, or unknowing1μ exposing themse1ves or others to radiation.

Batterμ power on. This does not app1μ mains vo1tage.

Batterμ power off. This does not remove mains vo1tage.


GE MEDICAL SYSTEMS

A—2


Contro1 for indisating radiation fie1d bμ using 1ight.

Co11imator b1ades s1osed. The sontro11ed b1ades are shown in thisker 1ines.

Co11imator B1ades open. The sontro11ed b1ades are shown in thisker 1ines.

Funstiona1 Earth (ground) Termina1. Termina1 direst1μ sonnested to a point of a measuring supp1μ or sontro1 sirsuit or to a ssreening part whish is intended to be earthed for funstiona1 purposes.

A1ternating Current. Indisates equipment that is suitab1e for a1ternating surrent on1μ.

Direst Current. Indisates equipment that is suitab1e for direst surrent on1μ.

Equipotentia1itμ. Identifies termina1s that bring the various parts of equipment or sμstems to the same potentia1 when sonnested together. These termina1s are not nesessari1μ at earth (ground) potentia1. The va1ue of the potentia1 maμ be indisated next to the sμmbo1.

Indisates 1osk re1ease or brake re1ease.

Indisates reseptas1e 1osation for hand—he1d radiographis prep/expose and fie1d—1ight sontro1 sab1e.

GE Mebical Systems

GE Medical Syztemz: Telex 3797371P.O. Box 414, Milwaukee, Wizconzin 53201 U.S.A. (Azia, Pacitic, Latin America, North America)

GE Medical Syztemz — Europe: Telex 698626 283, rue de la Miniére, B.P. 34, 78533 Buc

Cedex France

Documents

AMX-4+ CALIBRATION pdf-word