Canon CANOSCAN FB330 series Service Manual

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Canon CANOSCAN FB330 series Service Manual Manual pdf 101 page image

CHAPTER 55 - 3COPYRIGHT © 1999 CANON INC. CANOSCAN FB3330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)B. Troubleshooting Malfunctions1. Host computer not detecting the scannerCause 1 : Faulty installation of the device driverCorrective action : Reinstall the device driver.Cause 2 : The scanner is not powered ON. (FB330P/FB630P)Corrective action : Securely connect the AC adapter to the scanner.Cause 3 : Faulty connection of the parallel cable/USB cableCorrective action : Securely connect the parallel cable/USB cable to the scanner and hostcomputer.Cause 4 : Faulty parallel port setting of the host computer (FB330P/FB630P)Corrective action : Reset the host computer's parallel port setting of transmission method(ECP, EPP, Bidirectional, or Standard) and I/O port address.Cause 5 : Faulty main PCBCorrective action : Replace the main PCB.2. Scanner not operatingCause 1 : Lock switch is not unlocked.Corrective action : Unlock the lock switch.Cause 2 : Faulty connection of the flat cableCorrective action : Securely connect the flat cable to the contact image sensor and mainPCB.Cause 3 : Faulty contact image sensorCorrective action : Replace the contact image sensor.Cause 4 : Faulty main PCBCorrective action : Replace the main PCB.3. Scanning unit drive motor not runningCause 1 : Faulty connection of the flat cable connectorCorrective action : Securely connect the flat cable connector.Cause 2 : Faulty scanning unit drive motorCorrective action : Replace the drive unit.Cause 3 : Faulty main PCBCorrective action : Replace the main PCB.4. LED of the contact image sensor not lightingCause 1 : Faulty connection of the connectorCorrective action : Securely connect the flat cable.Cause 2 : Faulty contact image sensorCorrective action : Replace the contact image sensor.