COPYRIGHT © 2001 CANON INC.
2000 2000 2000 2000
CANON iR5000i/iR6000i REV.0 JUNE 2001
CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
4-25 T
4.1.13 E061
Status check
1) Select COPIER>DISPLAY>DPOT in service mode.
If the difference between VDM and VDT is less than 6V, go to step 2). If
the difference is 6V or greater, go to step 4).
Laser shutter
2) Remove the laser scanner unit. Is the laser shutter mechanism nor-
mal?
No:
Correct the laser shutter mechanism.
Laser unit
3) Replace the laser unit. Remedied?
YES: End
NO:
Check the wiring. If the wiring is normal, replace the DC control-
ler PCB.
Preconditioning LED
4) Display COPIER>DISPLAY>DPOT in service mode.
Is PLMT 1V?
NO:
Display COPIER>FUNCTION>MISC-P>PRE-EXP in service
mode.
Check if the preconditioning LED lights. If the LED does not
light, replace the LED.
Potential sensor
5) Replace the potential sensor. Remedied?
No:
Adjust or replace the potential sensor unit.
Primary corona assembly
6) Replace the primary corona assembly. Remedied?
YES: End
NO:
Replace the DC controller.
7) Replace the DC controller. Remedied?
YES: End
NO:
Upgrade the DC controller DIMM ROM to Ver. 4.04 or higher.
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