Service manual

ManualsBrandsCanon ManualsComputer equipmentCanoScan 9950F

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2. Service Troubleshooting by Symptom

2-1 Service Troubleshooting by Symptom

symptom Action Remarks

Unit does not turn the power on

Spontaneously shuts down right

after turned on

Replace AC ADAPTER

or replace

MAIN PCB ASS’Y

Carriage does not operate Replace MOTOR ASS’Y

or replace

MAIN PCB ASS’Y

Acoustic noise Eliminate the foreign substance

or replace MOTOR UNIT

or replace

MAIN PCB ASS’Y

or replace

CARRIAGE ASS’Y

Malfunction

Scanning lamp does not light up

ReplaceCARRIAGE ASS’Y

or replace

MAIN PCB ASS’Y

Blurred image Clean PLATEN GLASS ASS’Y

or replace

CARRIAGE ASS’Y

or replace

MAIN PCB ASS’Y

Solid vertical line Clean PLATEN GLASS ASS’Y

or replace CARRIAGE ASS’Y

Solid horizontal line Check the connection with PC

or replace USB cable

or replace

MAIN PCB ASS’Y

Faulty scanned image

Faulty color reproduction

Replace

MAIN PCB ASS’Y

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