Canon CLC5000 - The Copy Is Solid Black

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
5-99
3.4.17 The copy is solid black.
1) Generate a horizontal stripe test print (PGTYPE=10). Is the image
normal?
YES: Go to step 6.
Potential control fault
2) Execute ‘EPC’ under ‘FUNC’ in service mode. Is the copy image
immediately after the execution normal?
YES: End.
Primary charging unit
3) Is the primary charging unit installed properly?
NO: Replace the high-voltage cord.
Primary charging, Grid bias (output system)
4) Is there electrical continuity between both connectors of the high-
voltage cord connected to the primary charging assembly?
NO: Replace the high-voltage cord.
YES: • Check the primary charging system and the grid bias output sys-
tem.
• Try replacing the HVT PCB.
5) Does the scanning lamp turn ON?
NO: See “The scanning lamp fails to turn ON.”
Connector, Wiring
6) Are the connectors and wiring between the following PCBs nor-
mal?
Image processor PCB
Analog processor PCB
CCD unit
NO: Re-connect them.