Canon ImageRunner iR8500 Series Service Manual page 915

Sub-item
HVT-DE
D-HV-DE
<DENS>
Sub-item
DENS-ADJ
<BLANK>
Sub-item
BLANK-T
BLANK-B
COPIER > ADJUST > DEVELOP
Use it to enter the offset value for the developing high-voltage output of the high-
voltage unit.
<Setting range> -50 to 50
If you have replaced the high-voltage unit, be sure to enter the value indicated
on the label attached to the new high-voltage unit. If you have replaced the DC
controller PCB or cleared the RAM on the DC controller PCB, be sure to enter the
value indicated on the service sheet.
There are cases that the actual input and the indication after input do not match.
Use it to enter the offset value for the developing high-voltage output of the DC
controller PCB.
<Setting range> -100 to 100
If you have replaced the DC controller PCB, be sure to enter the value indicated
on the label attached to the new DC controller PCB.
If you have cleared the RAM on the DC controller PCB, be sure to enter the value
indicated on the service sheet.
There are cases that the actual input and the indication after input do not match.
COPIER > ADJUST > DENS
Correcting the image (copy/print) density
The F-value table is corrected if an image becomes fogged or blurred.
<Setting range> 1 to 9 (Default: 5)
Setting a greater value reduces fogging.
Setting a smaller value reduces blurring.
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.
White
Black
Original density
A lower value reduces
fogging.
COPIER > ADJUST > BLANK
Description
Use it to enter a value for the image leading edge non-image width.
<Setting range> 0 to 2362 (Default: 0)
Setting a greater value increases the chipping width.
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.
Use it to enter a value for the image trailing edge non-image width.
<Setting range> 0 to 2362 (Default: 0)
Setting a greater value increases the chipping width.
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.
Description
T-17-61
Description
F9 F1
White
A higher value reduces
fuzziness.
T-17-62
Chapter 17
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