The Registration Roller Fails To Rotate - Canon iR8500 Service Manual

4.1.85 The registration roller fails to rotate

Belt, Gear, Coupling
1) Is the drive form the main motor (M1) transmitted to the registra-
NO:
Registration power sensor (PS5)
2) Execute the following in service mode. When paper is placed in the
NO:
Registration roller clutch (CL2), DC controller PCB
3) Execute the following in service mode. Is the sound of the clutch
NO:
YES: Replace the DC controller PCB.
COPYRIGHT© 2001 CANON INC.
tion roller through the belt, gear, and coupling?
Mount the belt, gear, and coupling correctly.
registration power sensor assembly, does bit 11 change from 0 to 1?
COPIER>I/O>DC-CON>P001
Check the wiring and the sensor flag; if normal, replace the sensor
(PS5) (J509-A1,- A2, -A3 on DC controller PCB).
(CL2) heard?
COPIER>FUNCTION>PART-CHK>CL2
↓ ↓ ↓ ↓ ↓
OK
↓ ↓ ↓ ↓ ↓
COPIER>FUNCTION>PART-CHK>CL-ON
↓ ↓ ↓ ↓ ↓
OK
Check the wiring; if normal, replace the clutch (CL2)
(J509-A4, -A5 on DC controller PCB).
2000 2000 2000 2000
CHAPTER 6 TROUBLESHOOTING
CANON iR8500/7200 REV.1 AUG. 2001
6-141