Faulty Operation - Canon CANOSCAN D660U Service Manual

B. Faulty Operation
1. Host computer not detecting the scanner
Cause 1 : Faulty installation of the device driver
Corrective action : Uninstall the device driver and reinstall it.
Cause 2 : Faulty connection of the USB cable
Corrective action : Securely connect the USB cable to the scanner and host computer.
Cause 3 : Faulty main PCB
Corrective action : Replace the main PCB.
2. Scanner not operating
Cause 1 : Carriage lock is locked.
Corrective action : Unlock the carriage lock.
Cause 2 : Faulty connection of the flat cable
Corrective action : Securely connect the flat cable to the scanning unit and main PCB.
Cause 3 : Faulty scanning lamp
Corrective action : Replace the lamp unit.
Cause 4 : Faulty FAU
Corrective action : Replace the document cover.
Cause 5 : Faulty CCD
Corrective action : Replace the scanning unit.
Cause 6 : Faulty main PCB
Corrective action : Replace the main PCB.
3. Drive motor not running
Cause 1 : Faulty connection of the flat cable
Corrective action : Securely connect the flat cable.
Cause 2 : Faulty drive motor
Corrective action : Replace the drive motor.
Cause 3 : Faulty motor driver
Corrective action : Replace the scanning unit.
Cause 4 : Faulty main PCB
Corrective action : Replace the main PCB.
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
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