Canon iR8500 Service Manual page 716

<CCD> (iR8500)
Use it to execute auto adjustment for CCD/shading-related items.
CCD-ADJ
Use it to execute CCD auto adjustment.
Memo
<Using the Mode>
1) Place standard white sheets (10 sheets or more) on the copyboard glass.
2) Select the item, and press the OK key.
3) See that the machine executes auto adjustment (about 1 min).
4) See that the machine stops automatically after making adjustments.
5) All items of service mode (COPIER>ADJUST>LAMP, COPIER>
COPYRIGHT© 2001 CANON INC.
• If you have replaced any of the following or cleared the RAM on
the Reader controller PCB, execute this mode and LUT-ADJ(LUT-
ADJ2): reader controller PCB, CCD/AP PCB, CCD unit, scanning
lamp, scanning lamp inverter PCB, copyboard glass, standard white
plate, light adjustment control PCB, light adjustment sensor PCB.
• Use the whitest of all the sheets used by the user (except sheets for
color printing).
ADJUST>CCD) are updated; print a service label, and store it away.
2000 2000 2000 2000
(rear)
Standard white paper
F00-204-02
CANON iR8500/7200 REV.1 AUG. 2001
SERVICE MODE
COPIER>FUNCTION
S-73