Duplexing Unit Stacking Assembly, Re-Pick-Up Assembly - Canon 1000 Service Manual

7

Duplexing Unit Stacking Assembly, Re-Pick-Up Assembly

Cause Step
Duplexing
unit
Paper
Feeding roller
Holding tray
paper sensor
1, 2
Paper jog-
ging guide
plate
Stopper plate
DC controller
PCB, Pick-up
clutch
Pick-up roller
Separation
roller
Feeding roller
1, 2
COPYRIGHT © 2001 CANON INC.
Checks
1 Is the duplexing unit properly in-
stalled in the copier?
2 Try Canon-recommended paper. Is
the problem corrected?
3 Does the feeding roller operate
normally?
4 Is there deformation or dirt on the
feeding roller?
5 Does the holding tray paper sensor
(PS30, PS31) operate normally?
6 Does the paper jogging guide plate
operate normally?
7 Does the stopper plate operate
normally?
8 Does the pick-up roller of the
duplexing unit pick-up assembly
rotate while copying on the 2nd side
of a two-sided copy?
9 Is the pick-up roller deformed or
worn?
10 Is the separation roller of the
duplexing unit pick-up assembly
deformed or worn?
11 Is the feeding roller of the duplexing
unit pick-up assembly deformed or
worn?
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
Yes/No
NO
YES
NO
YES
NO
NO
NO
NO
YES
YES
YES
NO
Action
Install it properly, and
check the inside of the
unit for foreign matter.
Advise the user to use
recommended paper.
Check the feeding roller
solenoid (SL13).
Replace the feeding
roller.
Check the lever and the
wiring; if normal, replace
the sensor.
Check the duplexing unit
stacking plate guide motor
(M23); if normal, check
the home position sensor
(PS29).
Check the stopper plate
solenoid (SL12).
See IV. "Pick-up from the
duplexing unit fails."
Replace the pick-up roller.
Replace the separation
roller.
Replace the feeding
roller.
Check the guide plates
and the stacking assem-
bly for foreign matter and
deformation.
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