CHAPTER 14 TROUBLESHOOTING
14-192
COPYRIGHT © 1999 CANON INC. CANON imageRUNNER 400/330 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
<CCD>
FUNCTION
Level 3
MAN-ADJ
Remarks
Description
Executes shading auto correction.
Execute this mode after replacing the CCD PCB,
scanning lamp, DC controller PB, image processor PCB,
or standard white plate.
The VR on the DC controller PCB must be turned during
execution; be sure to remove the rear cover and locate the
VR on the DC controller PCB in advance.
During adjustment, SERVICE will be indicated in the
upper right corner of the screen.
n
Operation
1) Place five or more sheets of standard white paper on the
cupboard glass.
2) Select <MAN-ADJ> to highlight; then, press the OK key.
3) Check that the machine starts auto adjustment mode,
and the screen indicates the following:
AD -> CLANP -> VOL
4) When a beep is heard while VOL is indicated, press the
OK key on the screen.
If no beep is heard in several seconds, turn VR200 on
the DC controller PCB so that a beep is heard; then,
press the OK key.
5) Check that the screen indicates the following after
VOL-OK; at the end, it indicates END.
GAIN
→
CLANP2
→
DARK
→
SHADING
* The whitest of all used by the user (except paper for a color copier).
White paper