Canon CLC5000 Service Manual page 475

CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
e. E020–XX4A, XX4B, XX4C, XX4D, XXBA, XXBB, XXBC, XXBD, XXD0, XXE0
1) Perform "Checking E020" on the next page. Is 'E020' still indicated?
NO:
Developing assembly (uneven toner density)
2) Execute 'FUNC > INSTALL > STIR-C/M/Y/K' in service mode for
YES: End.
Developer
3) Replace the developer of the color for which 'E020' is indicated, and
YES: End.
Color toner density sensor
4) Replace the toner density sensor of the color for which 'E020' is in-
YES: End.
NO:
SALT sensor
5) Replace the Bk SALT sensor. Is the problem corrected?
YES: End.
NO:
Photosensitive drum
6) Replace the photosensitive drum. Is the problem corrected?
YES: End.
Developing cylinder
7) Does the developing cylinder of the color for which 'E020' is indi-
NO:
Toner level sensor
8) Is toner present inside the hopper? (Is the level of toner inside the
NO:
Hopper
9) Replace the toner level sensor. Is the problem corrected? (To supply
YES: End.
NO:
5-118
End.
the color in question. Is the problem corrected?
execute 'FUNC > INSTALL > INIT'. Is the problem corrected?
• Check the counter. If the developers of other colors are near the
ends of their lives, replace all developers.
dicated. Is the problem corrected?
Go to step 8.
Go to the next step.
cated rotating?
Check the developing cylinder drive system.
hopper for which 'E020' is indicated above the toner sensor?)
Check the toner level sensor inside the hopper.
toner, follow the instructions on Service Handbook of CLC1000 >
Chapter 2 > E. Developing Assembly-Related Parts > 1. Replacing
the Developer.)
Replace the hopper. (To supply toner, see Service Handbook of
CLC1000 > Chapter 2 > E. Developing Assembly-Related Parts >
1. Replacing the Developer.)
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001