Canon ImageRunner iR8500 Series, Service Manual, Page: 916 / 1122

Chapter 17
17-72
<V-CONT>
T-17-63
<HV-PRI>
T-17-64
<HV-TR>
T-17-65
BLANK-TE Use it to enter a value of the non-image width in image main scanning direction
(left, right).
1
<Setting range> 10 to 50 (unit: 0.1 mm), default: 25
If RAM on the DC controller circuit board has been cleared or the board itself
has been replaced, enter the value from the service label.
COPIER > ADJUST > V-CONT
Sub-item Description Level
If RAM on the DC controller circuit board has been cleared or the board itself has been replaced, enter the
value from the service label.
EPOTOFST Use it to enter an offset value for the voltage potential sensor
1
<Setting range>
ޓ
0 to 30
VL-OFST Use it to enter an offset value for the voltage potential control light-area target
voltage potential.
1
<Setting range>
ޓ
-50 to 50 (unit: 1 V)
VD-OFST Use it to enter an offset value for the voltage potential control dark-area target
voltage potential.
1
<Setting range>
ޓ
-50 to 50 (unit: 1 V)
DE-OFST Use it to enter an offset value for voltage potential control Vdc.
1
<Setting range>
ޓ
-80 to 80 (unit: 1 V)
OHP-OFST Use it to enter an offset value for Vdc for transparency voltage potential control.
1
<Setting range>
ޓ
-50 to 50 (unit: 1 V)
COPIER > ADJUST > HV-PRI
Sub-item Description Level
GRID Use it to enter an adjustment value for the grid current of the primary charging
assembly.
1
<Setting range> 400 to 900
If RAM on the DC controller circuit board has been cleared or the board itself has been
replaced, enter the value from the service label.
COPIER > ADJUST > HV-TR
Sub-item Description Level
TR-N1 Use it to enter an output adjustment value for the transfer charging current (for printing
on a single-sided print or on the 1st side of a double-sided print using plain paper).
1
<Setting range>
ޓ
-650 to 0
If you have replaced the DC controller PCB or cleared the RAM on the DC
controller, be sure to enter the value indicated on the service sheet.
The value entered and the value displayed after making the entry may fail to
match.
TR-N2 Use it to enter an output adjustment value for the transfer charging current (for printing
on 2nd side of a double-sided print using plain paper).
1
<Setting range>
ޓ
-650 to 0
If you have replaced the DC controller PCB or cleared the RAM on the controller
PCB, be sure to enter the value indicated on the service sheet.
The value entered and the value displayed after making the entry may fail to
match.
COPIER > ADJUST > BLANK
Sub-item Description Level