Canon iR1200 Series Service Manual page 361

Action 1. Foreign matter
Is there any foreign matter that hinders the rotation of the heat
discharge fan?
YES: Remove the foreign matter.
2. Wiring, Connection
Are the wiring and connection (connectors) of the fan normal?
NO: Correct them.
3. Fan
Try replacing the fan. Is the problem corrected?
YES: End.
4. DC controller PCB/Image processors PCB
Try replacing the DC controller PCB. Is the problem corrected?
YES: End.
NO: Replace the image processor PCB.
E810
The case that the toner bottle is detected, but not the cartridge.
Main cause The DC controller PCB is faulty. The cartridge is faulty.
Action 1. High-voltage contact (between machine and the developing
unit) Is the high-voltage spring used to supply high voltage to
the developing unit soild?
YES: Clean it.
2. High-voltage contact (between high-voltage spring and DC
controller PCB; J207) Is the connection between the high-
voltage spring and the DC controller PCB(J207) normal?
NO: Correct the connection.. If the problem cannot be
corrected, re-place the faulty part.
3. Developing unit, DC controller PCB
Replace the developing unit. Is the problem corrected?
YES: End.
NO: Replace the DC controller PCB.
T-14-8
Chapter 14
14-5