Canon CLC 1120 Service Manual page 666

Cause
Pickup roller
solenoid
cassette 1 (SL7,
DSL8)
cassette 2 (SL8,
DSL9)
cassette 3 (SL9)
duplexing feed
roll solenoid
(SL13)
Pickup clutch
(CL11, DCL12,
CL12, DCL13,
CL13)
Pickup driver
PCB, duplexing
drive PCB
DC drive PCB,
CPU PCB
COPYRIGHT © 1999 CANON INC.
Step
9 Turn off the power switch, and
disconnect J346, J347, and J348 of
the pickup driver PCB and J392 of
duplexing driver PCB. Set the
meter range to x100 , and measure
the resistance between the
following terminals on the harness
side; is it about 120 ?
SL7: J346-15, -16
SL8, DSL8: J347-15, -16
SL9, DSL9: J348-15, -16
SL13: J392-A1, -A2
10 Turn off the power switch, and
disconnect J346, J347, and J348 of
the pickup driver PCB, and J393 of
the duplexing driver PCB. Set the
meter range to x100 , and measure
the resistance between the
following terminals; is it about
120W?
CL11: J346-7, -8
CL12: J347-7, -8
CL13: J348-7, -8
Duplexing unit
CL14: J393-A3, -A4
11 Replace the pickup driver PCB or
the duplexing driver PCB. Is the
problem corrected?
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Checks Yes/No Action
NO Check the wiring; if
normal, replace the
solenoid.
NO Check the wiring; if
normal, replace the
clutch.
YES End.
NO Replace the DC driver
PCB or the CPU PCB.
13-139