Document Density; Adjustment - Canon NP6317 Service Manual

D.

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 NB-3 or NA-2 test sheet on the copyboard, and lower the copyboard cover.
4) Press switch SW 300 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 VR 301 on the DC controller so that "22" appears on the COPY COUNT/RATIO indi-
cator.
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 SORT/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.
COPYRIGHT © 1999 CANON INC.
For reference:
7.7
5
VR301
Test sheet Sheet of newspaper
Figure 4-503
7.7
5
Test sheet Sheet of newspaper
: when the setting is lowered.
: when the setting is raised.
Figure 4-504
CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM

Document density

Document density
4-13