Canon iR8500 Service Manual page 717

SERVICE MODE
COPIER>FUNCTION
LUT-ADJ
Use it to execute CCD gain simple correction.
• After executing CCD-ADJ, execute this mode to correct the defense in
density along the image middle (joint).
• Be sure to execute CCD-ADJ before executing this mode.
<Using the Mode>
1) Select the item, and press the OK key.
2) See that the machine executes auto adjustment.
3) See that the machine stops automatically after making adjustments.
4) The items in service mode (COPIER>ADJUST>LAMP, COPIER>
LUT-ADJ2
Use it to execute CCD gain fine adjustment.
• If the difference in density cannot be corrected by executing LUT-DJ
(CCD gain simplified correction), execute this mode using the 10-grada-
tion chart.
<Using the Mode>
1) As shown, place the 10-gradation chart (D-10 Test Sheet) on the
2) Select the item, and press the OK key.
3) See that the machine executes automatic adjustment.
4) See that the machine stops automatically after making adjustments.
5) The items in service mode (COPIER>ADJUST>LAMP, COPIER>
S-74
ADJUST>CCD) are updated; print out a service label, and store it
away.
copyboard glass.
ADJUST>CCD) are updated; print out the service label, and store it
away.
Place the 10-graduation chart
on the copyboard glass with
graduation part is downside.
COPYRIGHT© 2001 CANON INC.
F00-204-03
2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001