Canon CLC 1120 Service Manual page 168

CHAPTER 6 IMAGE FORMATION SYSTEM
E061
Check Detail
code
Dark area 0060
potential
attenuation
limit
Control 0070
limit
0071
xx80
xx81
Measure- 0090
ment limit
0091
0092
0093
0094
0095
0096
0097
VDI: Potential measured during initial rotation.
Vd3: Post-cleaning charging area potential as measured when the dark area attenuation
is measured.
Offset value: Value determined in service mode (FUNCTION>DPC>OFST).
6-16
COPYRIGHT © 1999 CANON INC.
Description
The dark area potential attenuation
value is 150 V or more.
The grid bias output is -900 V or
more.
The developing bias output is -100 V
or less.
The developing bias output is 700 V
or more.
The developing bias output is 200 V
or less.
Vd1 is 650 V or more.
Vd1 is -350 V or less.
VL1 is -200 V or more.
VL1 is -10 V or less.
Vd2 is -850 V or more.
Vd1 is -550 V or less.
VL2 is -250 V or more.
VL2 is -50 V or less.
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Possible cause
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 Vd1 lower limit is reached.
The VL1 upper limit is reached.
The VL1 lower limit is reached.
The Vd2 upper limit is reached.
The Vd2 lower limit is reached.
The VL2 upper limit is reached.
The VL2 lower limit is reached.