Canon imagePRESS C1 Service Manual - page 980
Chapter 16
16-83
10. HV-PRI
T-16-81
11. HV-TR
T-16-82
HD-OFS-Y/M/C/K
Adjust the color balance of high-density area. (Y/M/C/K color)
2
Adjustment range
-8 to +8
[Factory setting value / Value after RAM clear: 0]
Use of this mode must be avoided as much as possible when the machine has been operating
normally.
COPIER>ADJUST>HV-PRI
Subheading Contents
Level
PRIMARY
Adjust the current of the primary charging assembly.
1
Adjustment range: 0 to 1200 (Unit: µA)
[Factory setting value / Value after RAM clear: 1000]
GRID
Adjust the grid bias of the primary charging assembly.
1
Setting range: 0 to 1000 (Unit: 1V)
[Factory setting value / Value after RAM clear: 464]
HVRATE-3
Adjust the parameter setting ratio of the primary charging bias / laser power. (Feeding speed: 1/3
speed)
Adjustment method
Adjust the parameter setting ratio of the primary charging bias / laser power at the feeding speed
of 1/3 speed.
2
Setting range: 0 to 100 (This can be set in the unit of 1.)
[Factory setting value / Value after RAM clear: 100]
COPIER>ADJUST>HV-TR
Subheading Contents
Level
PRE-TR
Set a current value of the pre-transfer charging assembly. (common to Y/M/C/K)
1
Adjustment range: -120 to 0 (Unit: 5.0 uA)
[Factory setting value / Value after RAM clear: 0]
2TR-TGT1 to 8
Set an offset value for the target current value of the secondary transfer ATVC.
Adjustment method
When the product's operation mode matches the setting of TR-ENV, TR-PPR, TR-CLR, and TR-
DUP, the target current value of the secondary transfer ATVC is offset according to the setting
value of this mode.
2
Adjustment value: -10 to 10 (Unit: 2uA)
[Factory setting value / Value after RAM clear: 0]
Reference:
6 items of 2TR-TGT, 2TR-SHR, TR-PPR, TR-ENV, TR-CLR, and TR-DUP are treated as one
set.
COPIER>ADJUST>COLOR
Subheading Contents
Level