Canon CLC5000 - Page 474

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
5-117
b.E020–XX60, XX70
Photosensitive drum
1) Is the photosensitive drum soiled?
YES: Replace the cleaning blade.
Be sure to clean the SALT sensor as well.
SALT sensor
2) Clean the window of the SALT sensor. Is the problem corrected?
YES: End.
NO: Check the wiring from the DC controller PCB to the SALT sensor;
if normal, replace the SALT sensor.
c.E020–XX80, XX81, XX82, XX85, XX86, XX87, XX8F, XXC0, XXC1, XXC2,
XXC5, XXC67, XXC7
Backup data
1) ‘FUNC > INSTALL’ in service mode, is the value on the 3rd, 4th
page the same as that indicated on the service label?
NO: Enter the value of ‘DC-CON’ under ‘FUNC’ in service mode.
DC controller PCB
2) Replace the DC controller PCB. Is the problem corrected?
YES: End.
Perform the steps indicated for replacing the DC controller PCB.
d.E020–XX90, XX91
SALT sensor (dirt)
1) Is the window of the SALT sensor soiled with toner?
YES: Clean it.
SALT sensor shutter
Shutter open/close solenoid
2) Is the opening/closing operation of the SALT sensor shutter nor-
mal?
NO: Check the shutter for deformation.
Clean the inside by referring to 3. “Disassembling and Cleaning
the Inside of the SALT Sensor” under E. (SALT Sensor” in Chap-
ter 2 “Mechanical System.”
YES: Check the wiring from the DC controller 2 to the solenoid; if nor-
mal, replace the solenoid.