Pickup Fails (Multifeeder) - Canon iR8500 Service Manual

4.1.83 Pickup fails (multifeeder)

Wiring
1) Is the connector (of the machine) of the multifeeder connected cor-
NO:
----------
2) Is the leading edge of the copy paper as far as the registration
YES: See "4.1.85 The registration roller fails to rotate."
Pickup roller., Pickup/feeding roller, Separation roller
3) Are the pickup roller, pickup/feeding roller, and separation roller
NO:
Manual feed paper sensor (PS17)
4) Execute the following in service mode. When paper is placed in the
NO:
Manual feed tray pickup clutch (CL7)
5) Execute the following in service mode. Is the sound of the clutch
NO:
COPYRIGHT© 2001 CANON INC.
rectly?
Connect the connector correctly.
roller?
mounted correctly?
Mount the rollers correctly.
multifeeder assembly, does bit 12 change from 0 to 1?
COPIER>I/O>DC-CON>P004
Check the wiring and the sensor flag; if normal, replace the sensor
(PS17) (J510-B7, B8, B9 on DC controller PCB).
(CL7) heard?
COPIER>FUNCTION>PART-CHK>CL1
↓ ↓ ↓ ↓ ↓
OK
↓ ↓ ↓ ↓ ↓
COPIER>FUNCTION>PART-CHK>CL-ON
↓ ↓ ↓ ↓ ↓
OK
Check the wiring; if normal, replace the clutch (CL7) (J513-A8,
A9 on DC controller PCB).
2000 2000 2000 2000
CHAPTER 6 TROUBLESHOOTING
CANON iR8500/7200 REV.1 AUG. 2001
6-137