Canon Image Reader-A1 iR5000i Service Manual page 830

CHAPTER 5 SERVICE MODE
EGGN-POS
Use it to execute auto adjustment for the edge gain correction position for
the CCD. (The CCD edge gain correction mechanism is effective only when
an ADF is in use.)
Caution • If the CCD unit has been replaced, be sure to execute the following in
• If the CCD unit, No. 1 mirror mount, or No. 2 mirror mount has been
Using the Mode
1) Open the ADF (copyboard cover; be sure to do so).
2) Select the item, and press the OK key.
3) Wait until auto adjustment ends (about 1 sec).
4) See that auto adjustment ends automatically and the results (OK/NG)
• If NG is indicated, check the following, and execute adjustment once
5) When the following has been updated, enter the new
5-64 T
advance: COPIER>FUNCTION>CCD>CCD-ADJ.
replaced, execute this mode.
are displayed.
a. Is the ADF (copyboard cover) open?
b. Is the reading glass mounted correctly?
c. Is the edge gain correcting plate attached to the reading glass
normal?
d. Is the scanning lamp on?
settings:
COPIER>ADJUST>CCD-EGGN-ST and -EGGN-END.
Reading
glass
COPYRIGHT © 2001 CANON INC.
Edge gain correction plate
Copyboard
glass
(front)
F05-501-04
2000 2000 2000 2000 CANON iR5000i/iR6000i REV.0 JUNE 2001
COPIER>FUNCTION