The Copy Is Completely Black - Canon iR2200 Service Manual

CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

3.22 The copy is completely black.

Scanning lamp
1) Is the scanning lamp ON during copying operation?
NO:
Margin
2) Is there a margin on copies made in normal mode?
YES: Go to step 6.
NO:
Drum unit
3) Is the drum unit fitted correctly? (Is it fully pushed inside?)
NO:
Primary charging roller
4) Are the contact of the connectors, connection of the harness, and electri-
cal continuity from J130-7 of the composite power supply PCB to the pri-
mary charring roller normal? (The resistance of the high-voltage cord for
primary charging is 10 kΩ.)
NO:
Mirror (position)
5) Generate test prints (PG>TYPE; 1 through 8). At this time, is the image
on the photosensitive drum normal?
NO:
DC controller PCB, Composite power supply PCB
6) Is the output of J301-B4 (+) on the DC controller PCB 0 V during copy-
ing operation?
NO:
YES: Replace the composite power supply PCB.
Reader controller PCB, CCD unit
7) Try replacing the CCD unit. Is the problem corrected?
NO:
YES: End.
4-26 T
COPYRIGHT © 2001 CANON INC.
See "The scanning lamp fails to go ON."
Go to step 3.
Mount it correctly.
Correct the fault.
Go to step 7.
Replace the DC controller PCB.
Replace the reader controller PCB.
2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001