CHAPTER 10 TROUBLESHOOTING
COPYRIGHT © 1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
10-18
For reference:
7.7
5
VR301
Document density
Test sheet Sheet of newspaper
Cop
y density
7.7
5
Document density
Test sheet Sheet of newspaper
Cop
y density
When the setting is lowered.
When the setting is raised.
2.
AE Adjustment
Make the following adjustments when the AE sensor or the DC controller PCB has been re-
placed.
1) Remove the potentiometer cover at the back of the left cover.
2) Set the power switch ON.
• Wait until the WAIT period has ended.
3) Place an MB-3 or MA-2 test sheet on the copyboard, and lower the copyboard cover.
4) Press switch SW300 on the DC controller PCB.
• "0" will appear on the COPY COUNT/RATIO indicator on the control panel.
• If "0" does not appear, press the "0" number key on the control panel so that "0" appears.
5) Press the SORT/GROUP key on the control panel.
• The scanner will move forward to the AE measuring position; then, the scanning lamp will go
ON. (Note)
6) Adjust VR301 on the DC controller so that "19" appears on the COPY COUNT/RATIO indi-
cator.
Figure 10-222
7) Press the SORT/GROUP key.
• The scanning lamp will go OFF, and the scanner will return to the home position.
8) Remove the test sheet, place a sheet of newspaper on the copyboard, and lower the copyboard
cover.
9) Press the SORT/GROUP key.
• The copier will perform the same operations as described in step 5).
10) Make a note of the numerical value displayed on the COPY COUNT/RATIO indicator.
11) Press the SOR+T/GROUP key.
• "0" will appear on the COPY COUNT/RATIO indicator.
12) Press the "1" number key.
• "1" will appear on the COPY COUNT/RATIO indicator.
13) Enter the value recorded in step 10) using the NUMERIC keypad.
Figure 10-223
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