CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS

7. Pick-up fails.

Cause

Step

Checks

YES/NO

Remedies

 

 

 

 

 

 

1

Move the copyboard to the left

YES

See “Pick-Up Assembly” in

 

 

until it stops, and open the top

 

“Troubleshooting Feeding

 

 

cover. Does the pick-up roller

 

Faults.”

 

 

rotate when the door switch is

 

 

 

 

turned ON and the Copy Start

 

 

 

 

key is pressed at the correct

 

 

 

 

pick-up timing?

 

 

Main motor (M1)

2

Is the main motor rotating?

NO

See “The main motor fails

 

 

 

 

to rotate.”

 

 

 

 

 

Pick-up sensor (Q131)

3

Does the copier operate nor-

YES

Check the sensor lever.

 

 

mally when the pick-up sensor

 

 

 

 

(Q131) is blocked with paper?

 

 

 

 

 

 

 

Pick-up solenoid (SL1;

4

Set the meter to the ‘30VDC’

YES

Check the spring clutch in

PC420/430/FC220),

 

range. Does the voltage

 

the registration assembly

Registration solenoid

 

between J201-6 (+) and J201-7

 

and pick-up assembly; if

(SL1; PC400/FC200)

 

(-) on the DC controller/DC

 

normal, replace the

 

 

power supply PCB change to

 

solenoid.

 

 

about 24 V at pick-up timing?

 

 

DC controller/

 

NO

Check the wiring from the

 

 

DC power supply PCB

 

 

 

solenoid to the DC con-

 

 

 

 

troller/DC power supply

 

 

 

 

PCB; if normal, replace

 

 

 

 

the DC controller/DC

 

 

 

 

power supply PCB.

 

 

 

 

 

8. The scanning lamp fails to go ON.

Cause

Step

Checks

YES/NO

Remedies

 

 

 

 

 

Scanning lamp

1

Is the scanning lamp unit

NO

Re-attach the lamp unit.

(LA1-LA8)

 

attached correctly?

 

 

 

 

 

 

 

Scanning lamp

2

Is the scanning lamp black?

YES

Replace the scanning

(LA1-LA8)

 

 

 

lamp unit.

 

 

 

 

 

DC controller/DC

3

Is the connector of the scanning

YES

Replace the DC controller/

power supply PCB

 

lamp connected firmly?

 

DC power supply PCB.

 

 

 

 

 

Connector

 

 

NO

Re-connect the connector.

 

 

 

 

 

4-4

Page 36
Image 36
Canon FY8-23AV-000 manual Pick-up fails, Scanning lamp fails to go on

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