Pick-Up Fails. (Cassette) - Canon NP7160 Service Manual

CHAPTER 10 TROUBLESHOOTING

28. Pick-up fails. (cassette)

Cause
Step
Copy paper
Right door
Pick-up roller
Registration clutch
(CL1), Feeding
clutch (CL2)
Pick-up solenoid
(SL1)
DC controller PCB
10–58
COPYRIGHT © 1998 CANON INC.
Checks
Are the size of the copy paper in the cassette
1
and the size indicated by the cassette size
indicator identical?
Is the right door closed securely?
2
Is the leading edge of copy paper as far as
3
the registration roller?
Is the pick-up roller soiled or worn?
4
Open the right door, and press the Copy
5
Start key while holding paper over the right
door open/closed sensor. Does the feeding
roller or the pull-out roller rotate?
Set the meter range to 30 VDC, and connect
6
the meter probes to J107-B8(+) and J107-
B9(-). Does the voltage reading change from
0 to 24 V when the Start key is pressed?
Yes/No
CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Actions
Set the cassette size indicator
NO
once again.
Close the right door securely.
NO
See "The registration roller
YES
fails to rotate."
If the pick-up roller is soiled,
YES
clean it with alcohol. If it is
deformed by wear, replace it.
Check the drive gear for
NO
damage. Check the wiring
from the DC controller PCB
to each clutch; if normal
replace the clutch.
Check the wiring from the DC
NO
controller PCB to SL1; if
normal, replace SL1.
Replace the DC controller
YES
PCB.