Technical information

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