Technical information

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
5-172
5.1.7 Duplex feeding Assembly/Duplex Assembly
Duplexing unit
1) Is the duplex feeding assembly properly installed in the copier?
NO: Install it properly, and check the inside of the unit for foreign mat-
ter.
Paper
2) Try Canon-recommended paper. Is the problem corrected?
YES: Advise the user to use recommended paper.
Feeding roller
3) Does the feeding roller operate normally?
NO: Check the paper feed roller solenoid (SL13).
4) Is there deformation or dirt on the feeding roller?
YES: Replace the feeding roller.
Holding tray paper sensor 1, 2
5) Does the duplex paper sensor (PS30, PS31) operate normally?
NO: Check the lever and the wiring; if normal, replace the sensor.
Paper jogging guide plate
6) Does the paper jogging guide plate operate normally?
NO: Check the duplex paper jogging guide motor (M23); if normal, re-
place the duplex paper jogging guide home position sensor (PS29).
DC controller PCB
Pick-up clutch
7) Does the separation roller, feeding roller of the duplex pickup as-
sembly rotate while copying on the 2nd side of a two-sided copy?
NO: See IV. “Pick-up from the duplexing unit fails.”
Separation roller
8) Is the separation roller of the duplex pickup assembly deformed or
worn?
YES: Replace the separation roller.
Re-pickup roller
9) Is the re-pickup of the duplex pick up assembly deformed or worn?
YES: Replace the feeding roller.
NO: Check the guide plates and the stacking assembly for foreign mat-
ter and deformation.
Re-pickup shutter
10) Does the re-pickup shutter operate normally?
NO: Check the re-pickup shutter solenoid (SL8).