The Print Is Solid Black - Canon iR5000i Service Manual

3.22 The print is solid black

Reader unit/Printer unit (isolation)
1) Does the problem occur only in copy images?
YES: Go to step 2).
NO:
Scanning lamp
2) Is the scanning lamp on?
NO:
YES: Check the connection of the following PCBs; if normal, replace the
1.
2.
Laser unit
3) Make the following selections in service mode:
COPIER>DISPLAY>MISC>LPOWER. Is the laser output present during
printing?
NO:
YES:
1.
2.
COPYRIGHT © 2001 CANON INC.
CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
Go to step 3).
See "The scanning lamp fails to turn on."
PCB.
CCD/AP PCB
DC controller PCB
Replace the laser unit.
Replace the DC controller PCB.
Replace the main controller PCB.
2000 2000 2000 2000 CANON iR5000i/iR6000i REV.0 JUNE 2001
4-19 T