Canon NP6412 Service Manual page 326

CHAPTER 11 TROUBLESHOOTING
4) Press the push switch (PSW) on the ADF controller PCB.
• The copy paper on the copyboard will be discharged, and the optimum value will be stored.
11-40
COPYRIGHT © 1999 CANON INC.
PSW
0
ON
1 2
Figure 11-260
CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)