Canon CP660 Service Manual page 318

CHAPTER 10 TROUBLESHOOTING
11 E054
Cause Step
Duplexing 1
feeding roller 1
home position
sensor lever
Duplexing 2
feeding roller
drive gear
Duplexing dri- 3
ver PCB
Duplexing 4
feeding roller 1
home position
sensor (PS23)
Duplexing 5
feeding clutch
(CL5)
Duplexing 6
motor (M8)
Duplexing
driver PCB
10-36
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Checks
Is the duplexing feeding roller 1
home position sensor lever dam-
aged?
Is the drive gear of the duplexing
feeding roller worn/cracked?
Are the connectors J2003, J2004
and J2007 on the duplexing driver
PCB connected securely?
Replace the duplexing feeding roller
1 home position sensor. Is the prob-
lem corrected?
Disconnect the connector J2003 of
the duplexing feeding clutch, and
measure the resistance between the
connectors J2003-1 and J2003-2 on
the harness side. Is it about 140 Ω?
Replace the duplexing motor. Is the
problem corrected?
Yes/No
YES
YES
NO
YES
NO
YES
NO
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
Replace the lever.
Replace the
worn/cracking gear.
Connect the connec-
tors securely.
Replace the sensor.
Replace the duplexing
feeding clutch.
Replace the duplexing
motor.
Replace the duplexing
driver PCB.