COPYRIGHT © 2002 CANON INC.
2000 2000 2000 2000
CANON iR1200/iR1300 Series REV. 0 AUG. 2002
7-37
CHAPTER 7 TROUBLESHOOTING
3.1.20 The output is solid black.
General conditions
1) Execute ‘PRINT test’. Is the output image normal? (See 3.21.5 of
Chapter 2.)
YES: Go through steps 6) to 9).
NO:
Go through steps 2) to 5).
High voltage contact (between primary charging roller and high-voltage spring)
2) Is the high-voltage spring used to supply power to the cartridge
soiled? (Remove the cartridge to check.)
YES: Clean it.
High-voltage contact (high-voltage spring and DC controller PCB; J205)
3) Is the connection between the high-voltage spring and the DC con-
troller PCB (J205) normal?
NO:
Correct it. If the problem cannot be corrected, replace the faulty part.
Drum unit
4) Try replacing the drum unit. Is the problem corrected?
YES: End.
Developing unit, DC controller PCB
5) Try replacing the developing unit. Is the problem corrected?
YES: End.
NO:
Replace the DC controller PCB.
Contact sensor LED intensity auto adjustment adjustment
6) Execute contact sensor LED intensity auto adjustment adjustment.
Is the problem corrected? (See 1.2.4.1 of Chapter 7.)
YES: End.
Connector
7) Is the connection of the following controller normal: J501 and J503
on the analog processor PCB; J317 on the image processor PCB;
J504 of the contact sensor?
NO:
Connect them firmly. If the flexible cable has a scratch, replace it.
Contact sensor
8) Try replacing the contact sensor. Is the problem corrected?
YES: End.
Analog processor PCB, Image processor PCB
9) Try replacing the analog processor PCB. Is the problem corrected?
YES: End.
NO:
Replace the image processor PCB.
