The Copy Is Solid Black - Canon CLC5000 Service Manual

3.4.17 The copy is solid black.

1) Generate a horizontal stripe test print (PGTYPE=10). Is the image
YES: Go to step 6.
Potential control fault
2) Execute 'EPC' under 'FUNC' in service mode. Is the copy image
YES: End.
Primary charging unit
3) Is the primary charging unit installed properly?
NO:
Primary charging, Grid bias (output system)
4) Is there electrical continuity between both connectors of the high-
NO:
YES: • Check the primary charging system and the grid bias output sys-
5) Does the scanning lamp turn ON?
NO:
Connector, Wiring
6) Are the connectors and wiring between the following PCBs nor-
NO:
COPYRIGHT © 2001 CANON INC.
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
normal?
immediately after the execution normal?
Replace the high-voltage cord.
voltage cord connected to the primary charging assembly?
Replace the high-voltage cord.
tem.
• Try replacing the HVT PCB.
See "The scanning lamp fails to turn ON."
mal?
Image processor PCB
Analog processor PCB
CCD unit
Re-connect them.
2000 2000 2000 2000 CANON CLC5000 REV.0 JAN 2001
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