Canon iR8500 Service Manual page 268

b. When Replacing the DC Controller PCB
1) If possible, print out the user mode/service mode data.
2) Replace the DC controller PCB.
3) Execute the following in service mode to clear the RAM:
COPIER>FUNCTION>CLEAR>DC-CON.
4) Assemble the machine; then, connect the power plug to the power outlet, and turn on the
main power switch.
5) Enter the following indicated on the service label:
COPIER>ADJUST>LASER (all items)
COPIER>ADJUST>DEVELOP (all items)
COPIER>ADJUST>DENS (all items)
COPIER>ADJUST>BLANK (all items)
COPIER>ADJUST>V-CONT (all items)
COPIER>ADJUST>HV-PRI (all items)
COPIER>ADJUST>HV-TR (all items)
COPIER>ADJUST>HV-SP (all items)
COPIER>ADJUST>FEED-ADJ (all items)
COPIER>ADJUST>CST-ADJ (all items)
COPIER>ADJUST>EXP-LED (all items)
6) Execute the following in service mode: COPIER>FUNCTION>MISC-P>CL-ADJ (all
items)
COPIER>FUNCTION>SEEN>ADJ (all items)
7) Enter the values (4 types) indicated on the label attached to the new DC controller PCB
in service mode.
8) Turn off and then on the main power switch.
COPYRIGHT© 2001 CANON INC.
COPIER>ADJUST>DEVELOP>D-HV-DE
COPIER>ADJUST>HV-TR>D-HV-TR
COPIER>ADJUST>HV-TR>D-PRE-TR
COPIER>ADJUST>HV-SP>D-HV-SP
F02-1004-64
2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
CHAPTER 2 NEW FUNCTIONS
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