Laser Exposure System; Replacing The Laser Unit - Canon iR8500 Service Manual

2.6 Laser Exposure System

2.6.1 Replacing the Laser Unit

1) Check to make sure that the Data lamp in the control panel is OFF, and turn off the main
power switch.
2) Disconnect the power plug from the power outlet.
The machine remains supplied with power as long as its power plug is con-
nected to a power outlet even when its main power switch is turned off. Be
sure to disconnect the power plug.
3) Replace the laser unit.
4) Take notes of the label settings (LA-DELAY) on the new laser unit.
5) After assembling the machine, connect the power plug to the power outlet, and turn on
the main power switch.
6) Enter the settings recorded in step 4) in service mode:
COPIER>ADJUST>LASER>LA-DELAY.
COPYRIGHT© 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
CHAPTER 6 TROUBLESHOOTING
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