Canon NP7160 Service Manual page 250

CHAPTER 10 TROUBLESHOOTING
b. AE Scanning Intensity Adjustment
If an optimum image cannot be obtained by executing '301' (AE auto adjustment) in service
mode, perform the following:
1) Place a white background original on the copyboard glass, and select AE and Direct.
2) Make a copy, and check the copy image.
3) Select '302' (AE scanning intensity adjustment) in service mode.
• The copy count indicator will indicate the present setting.
4) Change the setting using the keypad or the +/- key.
[1] A higher setting will increase the intensity, making the copy image lighter.
[2] A lower setting will decrease the intensity, making the copy image darker.
5) Press the Start key to store the new setting.
• Repeat steps 2) through 5) until an optimum image is obtained.
6) Press the Reset key to end service mode.
10–20
COPYRIGHT © 1998 CANON INC.
Intensity
Copy
density
Test Chart
Figure 10-226
CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
[1]
[2]
Original
density