Canon CANOSCAN FB1210U Service Manual

Also see for CANOSCAN FB1210U: Service manual

CHAPTER 55 - 4 COPYRIGHT © 2000 CANON INC. CANOSCAN FB1210U REV.0 APR. 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)Possible Cause Related Parts Check Method Corrective ActionUSB cable connection failureScanner communication failureScanning unit failureUSB cableMain PCBScanning unitVisual checkTrial replacementTrial replacementConnect the USB cableproperlyReplace the main PCBReplace the scanning unitPossible CauseAC adapter is unpluggedfrom the outletAC Adapter cable isdisconnected from the scannerAC adapter output voltagefailureMain PCB failureMain PCB connection failureRelated PartsNoneNoneAC AdapterMain PCBNoneCheck MethodVisual checkVisual checkOutput voltage(+12V) checkTester check(+12V, GND)Visual checkCorrective ActionPlug the AC adapter intothe outletConnect the AC adapter cableto the power connector on thescannerReplace the AC adapterReplace the main PCBProperly connect the main PCBIII. PROBLEM, CAUSE AND CORRECTIVE ACTIONFB1210U may have the following five problems.* Power LED not lighting* Communication failure* Carriage movement failure* Poor image quality* Noise generatedA. Power LED Not LightingTable 5-1B. Communication FailureTable 5-2