Canon iR8500 Servise Manual page 566

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 correced 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>
COPYRIGHT© 2001 CANON INC.
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.
2000 2000 2000 2000
F00-204-03
CANON iR8500 REV.0 MAR. 2001
SERVICE MODE
COPIER>FUNCTION
S-69