E820; E823 - Canon iR8500 Service Manual

4.1.74 E820

Foreign matter
1) Is there foreign matter that prevents the rotation of the fan around
YES: Remove the foreign matter.
Connector
2) Is the connector J512 on the DC controller PCB connected se-
NO:
Drum fan (FM8), DC controller PCB
3) Try replacing the drum fan (FM8). Is the problem corrected?
NO:
YES: Replace the DC controller PCB.

4.1.75 E823

Foreign matter
1) Is there foreign matter that prevents the rotation of the fan around
YES: Remove the foreign matter.
Connector
2) Is the connector J504 on the DC controller PCB connected se-
NO:
Pre-transfer charging fan (FM10), DC controller PCB
3) Try replacing the pre-transfer charging assembly fan (FM10). Is
NO:
YES: Replace the DC controller PCB.
COPYRIGHT© 2001 CANON INC.
the drum fan?
curely?
Connect the connector securely.
End.
the pre-transfer charging assembly?
curely?
Connect the connector securely.
the problem corrected?
End.
2000 2000 2000 2000
CHAPTER 6 TROUBLESHOOTING
CANON iR8500/7200 REV.1 AUG. 2001
6-129