Canon 8800F - CanoScan - Flatbed Scanner Service Manual - Page 8

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Canon 8800F - CanoScan - Flatbed Scanner Service Manual

CanoScan 8800F

2. Troubleshooting

2-1 Troubleshooting by Symptom

Malfunction Unit does not turn the power on

Spontaneously shuts down right after turned on

Carriage does not operate

Acoustic noise

Scanning lamp does not light up

Faulty

Blurred image

scanned

image

Solid vertical line

Solid horizontal line

Faulty color reproduction

SYMPTOM

<2. Troubleshooting>

ACTION

Replace AC adapter

or replace MAIN PCB ASS'Y

Replace MOTOR ASS'Y

or replace MAIN PCB ASS'Y

Eliminate the foreign substance

or replace MOTOR ASS'Y

or replace MAIN PCB ASS'Y

or replace CARRIAGE ASS'Y

Replace CARRIAGE ASS'Y

or replace MAIN PCB ASS'Y

Clean PLATEN GLASS ASS'Y

or replace CARRIAGE ASS'Y

or replace MAIN PCB ASS'Y

Clean PLATEN GLASS ASS'Y

or replace CARRIAGE ASS'Y

Check the connection with PC

or replace USB cable

or replace MAIN PCB ASS'Y

Replace MAIN PCB ASS'Y

Maintenance

REMARKS