Canon ImageRunner iR8500 Series Service Manual page 928

Chapter 17
Sub-item
Adjusting the Laser Output
If you have cleared the RAM on the DC controller PCB, be sure to enter the settings indicated on the service
label.
LA-DELAY Entering a delay value after laser unit displacement (Matching the laser main scan)
LA-PWR-A Use it to enter the power adjustment value for the laser A.
LA-PWR-B
DLY-FINE
<DEVELOP>
Sub-item
DE-DC
DE-NO-DC
HVT-DE
D-HV-DE
<DENS>
17-84
COPIER > ADJUST > LASER
<Setting range> 0 to 4807
Enter the delay value peculiar to the unit affixed to the unit at laser unit
replacement.
<Setting range> 0 to 255
If you have replaced the laser unit, enter the power adjustment value for the laser A
indicated on the label attached to the unit.
Use it to enter the power adjustment value for the laser B.
<Setting range> 0 to 255
If you have replaced the laser unit, enter the power adjustment value for the laser B
indicated on the label attached to the unit.
Use it to fine-adjust the displacement of the laser A or laser B.
<Setting range> -16 to 16
COPIER > ADJUST > DEVELOP
Use it to enter the DC output value for image formation.
<Setting range> 0 to 600
There are cases that the actual input and the indication after input do not match.
Use it to enter the development DC output value for non-image formation.
<Setting range> 0 to 600
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 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.
Description
T-17-86
Description
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