Technical information

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
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2.8 Laser Exposure System
2.8.1 When Replacing the Laser Unit
1) Perform laser focus adjustment.
2) Perform laser power adjustment.
3) Perform laser intensity adjustment.
2.8.2 When Replacing the Video Controller PCB
Nothing in particular.
2.8.3 When Replacing the BD Unit
Before removing the BD unit, be sure to mark its position with a scriber.
1) Using ‘FUNC>INSTALL’, set ‘IMG-REG’ to ‘0’.
2) Turn off the power switch, and replace the BD unit.
3) After replacement, execute ‘FUNC>INSTALL>REG-APER’ in service mode. (If a BD
error ‘E100’ occurs, check the position of the unit, and execute ‘REG-APER’ once
again.)
4) Execute ‘FUNC>IMG-REG>AUTO-ADJ’ in service mode.
5) Using ‘FUNC>INSTALL’ in service mode, set ‘IMG-REG’ to ‘1’.
2.8.4 Adjusting the Laser Power
You must always adjust the laser power whenever you have replaced the laser unit.
a.Required Tools
• Laser Power Checker (FY9-4013)
• Digital Multimeter (CK-0436)
The output of the Laser Power Checker may change over time; have it cali-
brated once a year at the service station using a special calibration tool.