Potential Control Timing) - Canon 1130 Service Manual

CHAPTER 6 IMAGE FORMATION SYSTEM
E061
Check
Dark area
potential
attenuation
limit
Control
limit
Measure-
ment
limit
VDI: Potential measured during initial rotation.
Vd3: Post-cleaning charging area potential as measured when the dark area
Offset value: Value determined in service mode (FUNCTION>DPC>OFST).
6-16
COPYRIGHT © 2002 CANON INC.
Detail
code
0060 The dark area potential
attenuation value is 150 V or
more.
0070 The grid bias output is 900 V or
more.
0071 The developing bias output is
100 V or less.
xx80 The developing bias output is
700 V or more.
xx81 The developing bias output is
200 V or less.
0090 Vd1 is 650 V or more.
0091 VL1 is 200 V or more.
0092 Vd2 is 850 V or more.
0093 VL2 is 250 V or more.
0094 Vd1 is 350 V or less.
0095 VL1 is 10 V or less.
0096 Vd2 is 550 V or less.
0097 VL2 is 50 V or less.
attenuation is measured.
CANON CLC1100/1130/1150/1160/1180 REV.3 FEB. 2002 PRINTED IN JAPAN (IMPRIME AU JAPON)
Description Possible cause
Photosensitive drum; error in
potential control.
The grid bias upper limit is
reached.
The grid bias lower limit is
reached.
The developing bias upper
limit is reached.
The developing bias lower
limit is reached.
The Vd1 upper limit his
reached, or the
photosensitive drum has
deteriorated.
The VL1 upper limit is
reached.
The Vd2 upper limit is
reached.
The VL2 upper limit is
reached.
The Vd1 lower limit is
reached.
The VL1 lower limit is
reached.
The Vd2 lower limit is
reached.
The VL2 lower limit is
reached.