Canon iR8500 Servise Manual page 553

SERVICE MODE
COPIER>ADJUST
<LASER>
Use it to adjust the laser output.
If you have cleared the RAM on the DC controller PCB or replaced the DC controller
PCB, enter the setting indicated on the service label.
PVE-OFST
Use it to adjust the point of laser B radiation.
Range of
adjustment -300 to 300
• A higher setting shifts the point toward the rear.
• A lower setting shifts the point toward the front.
The point for laser A radiation shifts in keeping with the point for laser B
radiation.
LA-DELAY
Use it to enter the delay value for the laser unit.
Range of
adjustment 0 to 4807
Use it to adjust the delay line of pixels so that laser A and laser B may be
coordinated in main scanning direction.
LA-PWR-A
Use it to enter the power adjustment value for laser A.
Range of
adjustment 0 to 255
LA-PWR-B
Use it to enter the power adjustment value for laser B.
Range of
adjustment 0 to 255
DLY-FINE
Use it to fine-adjust (correct) the discrepancy of laser A/laser B.
Range of
adjustment -16 to 16
S-56
If you have replaced the laser unit, enter the value indicated on the
label attached to the laser unit.
If you have replaced the laser unit, enter the power adjustment value
for laser A indicated on the unit.
If you have replaced the laser unit, enter the power adjustment value
for laser B indicated on the unit.
COPYRIGHT© 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500 REV.0 MAR. 2001