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2TroubleshootingProcedures
QOSMIOF50-QOSMIOF55-DYNABOOKQOSMIOF50SeriesMaintenanceManual
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3
Tables
Table2-1 BatteryLED....................................................................................................10
Table2-2 DC-INLED....................................................................................................11
2.1 TroubleshootingIntroduction
Chapter2describeshowtodetermineifaFieldReplaceableUnit(FRU)inthecomputeris
causingthecomputertomalfunction.TheFRUscoveredare:
TheDiagnosticsDiskoperationsaredescribedinChapter3.Detailedreplacement
proceduresaregiveninChapter4.
Thefollowingtoolsarenecessaryforimplementingthetroubleshootingprocedures:
1. DiagnosticsDisk(RepairandSoundRepair)
2. Phillipsscrewdriver(2mm)
3. 6mmnutdriver(forthehelixscrewnutsontherearportsforCPUdoor)
4. 2DDor2HDformattedworkdiskforfloppydiskdrivetesting
5. Sycard(EXPRESSCARDtestcard)
6. Cleaningkitforfloppydiskdrivetroubleshooting
7. Cleaningkitforopticaldrivetroubleshooting
8. Multimeter
9. Externalmonitor
10.USBcompatiblekeyboard
11.Multimediasoundsystemwithline-inandline-outports
12.Headphones
13.USBtestmoduleandUSBcable
14.MusicCD
15.MICmoduleandMICline