E051 - Canon iR8500 Service Manual

CHAPTER 6 TROUBLESHOOTING

4.1.17 E051

Horizontal registration home position sensor (PS18)
1) Is the horizontal registration home position sensor (PS18) normal?
NO:
Horizontal registration motor (M15)
2) Disconnect J3603 of the stackless feed driver PCB. Is there electri-
NO:
Manual feed tray open/closed detecting switch (MSW5)
3) Is the mounting condition of the manual feed tray open/closed de-
NO:
Stackless feed driver PCB, DC controller PCB
4) Try replacing the stackless drive PCB. Is the problem corrected?
YES: End.
NO:
6-102
Replace PS18.
cal continuity between the following pins of the jacks on the motor
side?
J3603-B4, -B5, -B3
J3603-B2, -B6, -B1
Replace the horizontal registration motor (M15).
tecting switch (MSW5) normal?
Mount the switch properly.
Replace the DC controller PCB.
COPYRIGHT© 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001