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COPYRIGHT© 2001 CANON INC.
2000 2000 2000 2000
CANON iR8500 REV.0 MAR. 2001
CHAPTER 6 TROUBLESHOOTING
6-83
3.3.6 The copy is foggy (entire face)
----------
1) Perform the Image Adjustment Basic Procedure. Is the problem
corrected?
YES: End.
Scanner (dirt)
2) Does the problem occur only in copy image?
YES: The cause is between the scanner and the CCD. Check the follow-
ing:
1. Scanning lamp for dirt and life.
2. Reflecting plate, mirror, lens, and standard white plate for dirt.
High-voltage DC PCB
3) Is the switch (SW101) on the high-voltage DC PCB set to the
DOWN side?
NO:
Set it to the DOWN side.
Potential control system
4) Set ‘0’ to the following in service mode to disable potential control:
COPIER>OPTION>BODY>P0-CNT. Is the problem corrected?
YES: The cause is in the potential control system. Make checks as in-
structed in 2.7.6 “Checking the Surface Potential Control System.”
Cleaner assembly
5) Is the cleaning blade correctly mounted?
NO:
Mount the cleaning blade correctly.
Pre-exposure lamp, DC controller PCB
6) Is the pre-exposure lamp ON during copying operation?
NO:
1. Replace the pre-exposure lamp.
2. Replace the DC controller PCB.
Developing members, Developing cylinder
7) Are the developing members worn?
YES: Replace the developing members.
NO:
Replace the developing cylinder.
Developing bias control
8) Is the setting in the following service mode too high:
COPIER>ADJUST>V-CONT>DE-OFST or OHP-OFST?
YES: Try decreasing it.
Developing cylinder speed control
9) Is the setting of the following service mode ‘0’:
COPIER>OPTION>BODY>DEV-LOW?
NO:
Set it to ‘0’.
Chap_06_6.p65
01/03/13, 18:25
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Содержание ImageRunner iR8500 Series
Страница 23: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 CHAPTER 1 INTRODUCTION ...
Страница 48: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 CHAPTER 2 NEW FUNCTIONS ...
Страница 52: ...CHAPTER 2 NEW FUNCTIONS 2 4 COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 ...
Страница 60: ...CHAPTER 2 NEW FUNCTIONS 2 14 COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 ...
Страница 76: ...CHAPTER 2 NEW FUNCTIONS 2 36 COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 ...
Страница 78: ...CHAPTER 2 NEW FUNCTIONS 2 40 COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 ...
Страница 93: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 CHAPTER 3 MAIN CONTROLLER ...
Страница 110: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 CHAPTER 4 INSTALLATION ...
Страница 146: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 CHAPTER 5 MAINTENANCE AND INSPECTION ...
Страница 275: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 CHAPTER 6 TROUBLESHOOTING ...
Страница 345: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 CHAPTER 6 TROUBLESHOOTING 6 76 ...
Страница 346: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 CHAPTER 6 TROUBLESHOOTING 6 77 ...
Страница 492: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR8500 REV 0 MAR 2001 APPENDIX ...
Страница 497: ...Service Mode COPYRIGHT 2001 CANON INC 2000 CANON iR8500 REV 0 MAR 2001 ...
Страница 620: ...Error Code COPYRIGHT 2001 CANON INC 2000 CANON iR8500 REV 0 MAR 2001 ...
Страница 655: ...PRINTED IN U S A 0301AB0 76 0 This publication is printed on 100 recycled paper ...