ATECH MES SQA-Vb Service manual

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File Name: Tech Bulletin_SQA_Blank Screen_12_OCT_10 Page 1 of 3
TechnicalBulletin‐BlankLowerOperationalScreen
Appliestothefollowing:ALLSQA‐V(V,Vb,Ve,VpandVt)
Issuedate:October12,2010
Problemdescription:Thelower,operationalscreenoftheSQAisblank,butlitORitdisplaysblacklinesonayellow
background.
Procedure
STEP1:
1. Re‐installtheSQA‐Vsoftware.
2. Ifthesoftwareissuccessfullyinstalledandthescreenisstillblank–gotoStep2
3. Ifthesoftwarewasnotinstalledsuccessfullybasedon:
a. ACKerror:ThisisaFLASHMEMORYfailure.TheSQA‐VmustbesentbacktoMESLTDforrepairasanRMA.
b. TIMEOUTerror:ThisisacommunicationfailurebetweentheSQAandthePC.VerifythattheSQA‐Vis
connectedtothecorrectCOMportonyourPCandalsothattheCOMportisdefinedproperly.
c. Iftheportisfunctioning:PresstheSERVICEbuttonwhilesequentiallyswitchingthedeviceonandofftwice.Try
toinstallthesoftwareagain.Iftheinstallationfailsagain–gotoStep2.
STEP2:
1. MakesurethattheSQA‐Visturnedoffand
dissconnectedfromanysourceofelectricity.
2. OpentheSQA‐V.
3. Verifythattheharnessthatconnectsthe
userscreenandthemainboardisinthe
correctpositionandisproperlyconnected
(seeFigure1).
4. IftheproblempersistsgotoStep3.

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 
MBsideLCDscreenside
Figure1:Verifytheflatcableisproperlyconnected
STEP3:
1. Verifythattheharnessconnectingthemain
boardtothePCisproperlyconnected(RS232
cable).
2. TightentheharnessconnectoratlocationJ5
onthemainboard(seeFigure2).
3. IftheproblempersistsgotoStep4.
Figure2:J5connectoronthemainboard
STEP4:
1. VerifythattheMainboardprocessorispositionedaccordingtotheinstructionsinAppendix1ofthisbulletin.
2. Replacetheprocessoriftheproblempersists.
3. Ifthescreenisstillblankafterreplacingtheprocessor‐gotoStep5.
STEP5:
1. ReplacetheLCDoperationalscreenaccordingtotheinstructionsinAppendix2ofthisbulletin.Theinstructionscanalso
befoundonPage19intheSERVICEMANUAL.
2. Iftheproblempersistswiththenewscreen–sendtheSQAbacktothemanufacturer(MES)forarepairRMA.
J5
connector
Note the alignment of
the red line on the cable

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File Name: Tech Bulletin_SQA_Blank Screen_12_OCT_10 Page 2 of 3
Appendix1:InstructionsforRE‐SEATINGorREPLACINGtheSQAPROCESSOR
Stage1:Re‐seatingtheprocessortothecorrectposition:

1. TurnofftheSQAanddisconnectthepowersupplycable.
2. Removethe4screwsontherearpanelusingaPhilipsscrew
driver#2(Fig.1)andopentheSQA(Fig.2)
3. Slightlypressthecenteroftheprocessorwithanindexfinger
tore‐seatitintothecorrectposition.(Fig.3).
4. ClosetheSQAandreplacethe4Phillipsscrewsontherear
Panel.
5. ConnectthepowercableoftheSQA‐V.
6. TurntheSQAonandruntheSELFTEST.
7. IftheSQA‐Vpasses,therepairprocessiscomplete.
8. IftheSQA‐Vdoesnotturn‐onorfailsself‐test,gotostage2.
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Fig.1‐2:OpentheSQA‐V
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Figure3:Applydownwardpressuretotheprocessor
Stage2:Replacethedamagedprocessor:
1. TurnofftheSQAanddisconnectthepowersupplycable.
2. Releasethe4screwsontherearpanelusingaPhilipsscrew
driver#2andopentheSQA.
3. Removethedamagedprocessorusingtweezers(seeFig.4).

Fig.4:Removethedamagedprocessor
4.Replacetheoldprocessorwithanewprocessoraccordingto
thefollowingdirections:
•Alignthe“dot”whichismarkedontheprocessorwiththe
“Arrow”markintheprocessorcavity(seeFig.5‐6).
5. Slightlypressthecenteroftheprocessorwithanindexfinger
tore‐seatitintothecorrectposition(Fig.7).
Fig.5‐6:Aligntheprocessorinthecavitycorrectly
6. Closetheunitandscrewbackinthe4Phillipsscrewsonthe
rearPanel.
7. Connectthepowercable,turnontheSQAandverifythatit
passestheSELF‐TEST.
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Figure7:Re‐seattheprocessor
Arrow mark on
the processor
Dot mark on
the
p
rocesso
r

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File Name: Tech Bulletin_SQA_Blank Screen_12_OCT_10 Page 3 of 3
Appendix2:InstructionsforreplacingtheLCDoperationalscreen
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