Canon iR6570 series Service Manual page 482

Chapter 13
13-10
Checking the Laser Output
A
Enable potential control: COPIER>
OPTION>BODY>PO-CNT=1.
Make the following selections in
service mode, and enter '1':
COPIER>FUNCTION>DPC>DPC.
Switch off and on the main power
switch.
Check the following indications:
for copier images:
COPIER>DISPLAY>DPOT>VL2M
for printer images:
COPIER>DISPLAY>DPOT>VL2M-P
Is the indication
70 ± 15 V?
NO
Check the laser output.
Is the laser output a
limit value?
YES
Replace the laser unit.
F-13-11
B
Forced execution
of potential control
YES
NO