Chapter 1414-5T-14-8Action 1. Foreign matterIs there any foreign matter that hinders the rotation of the heatdischarge fan?YES: Remove the foreign matter.2. Wiring, ConnectionAre the wiring and connection (connectors) of the fan normal?NO: Correct them.3. FanTry replacing the fan. Is the problem corrected?YES: End.4. DC controller PCB/Image processors PCBTry replacing the DC controller PCB. Is the problem corrected?YES: End.NO: Replace the image processor PCB.E810The 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 developingunit) Is the high-voltage spring used to supply high voltage tothe developing unit soild?YES: Clean it.2. High-voltage contact (between high-voltage spring and DCcontroller 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 becorrected, re-place the faulty part.3. Developing unit, DC controller PCBReplace the developing unit. Is the problem corrected?YES: End.NO: Replace the DC controller PCB.
