Canon GP200, Руководство по обслуживанию, Страница: 302 / 458

5 Shading Auto Correction
• There are two types of shading correction:
for servicing and for R&D/factory. (Use the
3rd screen in *4*; do not use shading auto
correction for R&D/factory.)
• In shading correction, various data items
are measured, and the results are stored in
RAM on the image processor PCB. (The
data will be used as target values for shad-
ing correction executed before copying.)
• Execute the mode (R&D/factory) for the fol-
lowing:
• After replacing the standard white plate
• After replacing the scanning lamp
• After replacing the DC controller PCB
1) Open the front door, and insert the handle of
the separation static cleaning brush into the
fixing assembly releasing opening.
Figure 3-1016
2) Insert the door switch actuator into the door
switch assembly.
3) Press the service switch with a hex key.
• ‘$’ will be indicated in the upper left corner
of the LCD.
4) Press the * key twice.
• The Service Mode Menu screen will
appear.
Figure 3-1017
5) Press ‘FUNCTION’ on the Menu screen (*4*),
an press the OK key.
6) Press the Page key to bring up the
Shading screen (12 the screen).
Figure 3-1018
7) Place five to ten standard blank sheets of
paper (FY9-3004) on the copyboard glass.
Figure 3-1019
Copy paper
Copyboard glass
CANCEL
+
OK
–
*3* FUNCTION 12
AUTO SHEADING START (OK)
WB
GDA1
CDA4
D-ODD H WP
H GD2
H ADDA5
H D-EVN H LAMP H
H CDA3 H
H
H
Now [ ]
1 DISPLAY
2 I/O DISPLAY
3 ADJUST
4 FUNCTION
5 OPTION
6 COUNTER
7 ACC
8 FAX
CANCEL
+
OK
<SERVICE MODE>
* *
* *
* *
* *
* *
* *
* *
* *
–
1
2
Separation static eliminator cleaning brush
3–248
COPYRIGHT © 1996 CANON INC. CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
3. OPERATIONS AND TIMING