COPYRIGHT© 2001 CANON INC.
2000 2000 2000 2000
CANON iR105 REV.0 JULY 2001
CHAPTER 6 TROUBLESHOOTING
6-48
c. Zero-Level Check
One way of finding out if the surface potential control circuit is good or not is to use a
zero-level check.
REF.
A zero-level check is made to see if the microprocessor registers 0 V when
the surface potential of the drum is 0 V.
Using the result of the check, you can find out if the microprocessor on the DC controller
PCB or the measurement unit is good or not; a zero-level check may take either of the fol-
lowing two methods:
1. Method 1
1) Turn off the power switch.
2) Short the connectors J522-1 and -2 on the DC controller PCB with a jumper wire, and
disconnect the connector J3 of the potential control PCB.
F06-207-06
Connector (J3)
J522
Summary of Contents for iR105 Series
Page 547: ...COPYRIGHT 2001 CANON INC 2000 2000 2000 2000 CANON iR105 REV 0 JULY 2001 APPENDIX ...
Page 561: ...Service Mode COPYRIGHT 2001 CANON INC 2000 CANON iR105 REV 0 JULY 2001 ...
Page 691: ...Error Code COPYRIGHT 2001 CANON INC 2000 CANON iR105 REV 0 JULY 2001 ...
Page 727: ......
Page 731: ......
Page 737: ......
Page 739: ......
Page 745: ......
Page 749: ......
Page 757: ......
Page 761: ......
Page 765: ......
Page 769: ......
Page 775: ......
Page 799: ......
Page 817: ......
Page 827: ......
Page 833: ......
Page 839: ......
Page 845: ......
Page 873: ......
Page 877: ......
Page 887: ......
Page 891: ......
Page 901: ......
Page 905: ......
Page 909: ......
Page 917: ......
Page 921: ......
Page 925: ......
Page 931: ......
Page 939: ......
Page 943: ......
Page 951: ......
Page 1002: ......
Page 1012: ...C 10 COPYRIGHT C 2001 CANON INC STANDARD FASTENERS REV 0 FEB 1992 ...
Page 1029: ...PRINTED IN U S A IMPRIME AU U S A This publication is printed on 100 recycled paper ...