Canon CP660 Service Manual page 302

CHAPTER 10 TROUBLESHOOTING
Cause Step
ITD cleaning 8
roller drive
assembly
9
ITD cleaning 10
roller
locking/unlock-
ing solenoid
(SL1)
11
DC controller 12
PCB
10-20
COPYRIGHT © 1999 CANON INC.
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Checks
Is the drive gear or the like used to
transmit locking/unlocking drive of
the ITD cleaning roller worn or
cracked?
Is the cam used to lock/unlock the
ITD cleaning roller worn or cracked?
Are the connector J674 on the sub
relay PCB and the connector J227
on the DC controller PCB connected
securely?
Disconnect the connector J674 of
the solenoid, and measure the volt-
age between the connectors J674-1
(CLNRON) and J674-2 (+24 UH) on
the harness side. Is it about 85 ?
Yes/No
YES
YES
NO
NO
YES
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
Replace the worn or
cracking part.
Replace the worn or
cracking part.
Connect the connec-
tors securely.
Replace the ITD clean-
ing roller
locking/unlocking
(SL21) solenoid.
Replace the DC con-
troller PCB.