Canon iR8500 Service Manual page 707

SERVICE MODE
COPIER>ADJUST
BLANK-TE
Use it to enter the left/right non-image width in main scanning direction.
Range of
adjustment 10 to 50 (1 being equal to 0.1 mm) [default: 25]
<V-CONT>
Use it to adjust the potential control mechanism.
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.
EPOTOFST
Use it to enter the offset value for the potential sensor.
Range of
adjustment 0 to 30
VL-OFST
Use it to enter the offset value for the potential control light-area target po-
tential.
Range of
adjustment -50 to 50 (1 being equal to 1 V)
VD-OFST
Use it to enter the offset value for the potential control dark area target po-
tential.
Range of
adjustment -50 to 50 (1 being equal to 1 V)
DE-OFST
Use it to enter the offset value for potential control Vdc.
Range of
adjustment -50 to 50 (1 being equal to 1 V)
OHP-OFST
Use it to enter the offset value for transparency potential control Vdc.
Range of
adjustment -50 to 50 (1 being equal to 1 V)
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COPYRIGHT© 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001