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COPYRIGHT© 2001 CANON INC.
2000 2000 2000 2000
CANON iR8500 REV.0 MAR. 2001
CHAPTER 6 TROUBLESHOOTING
6-82
3.3.4 The copy has uneven density (darker front)
3.3.5 The copy has uneven density (lighter front)
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1) Perform the Image Adjustment Basic Procedure. Is the problem
corrected?
YES: End.
Developing assembly (position)
2) Are the developing members of the developing assembly in firm
contact with the photosensitive drum?
NO:
Check the developing assembly locking unit.
Scanner (dirt)
3) Clean the scanning lamp, reflecting plate, side reflecting plate, mir-
ror, lens, and dust-proofing glass. Is the problem corrected?
YES: End.
Pre-exposure lamp
4) Is the pre-exposure lamp ON evenly during copying operation?
NO:
1. Replace the pre-exposure lamp.
2. Replace the DC controller PCB.
Developing assembly, Charging assembly, Copy paper
5) Is the developing cylinder coated evenly with toner?
NO:
1. Clean the tip f the blade of the developing assembly (dry wiping)
2. Clean the surface of the developing cylinder.
3. Check to find out if the toner inside the developing assembly is
uneven.
YES: 1. Clean all the charging wires once again, and check the position
of each charging wire.
2. Try different copy paper.
3. Check the nip width of the fixing roller.
Chap_06_6.p65
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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 ...