Canon NP6412 Service Manual page 117

b. Changing the Intensity
The machine changes the intensity of the pre-exposure lamp between image areas and non-
image areas.
Except for APVC measurement and non-image areas, the voltage used to turn on the pre-
exposure lamp is dropped to prevent overheating inside the machine.
Power Switch
Main motor (M1)
Primary bias
Pre-exposure lamp (LA2)
I: Image area
II: Non-image area
COPYRIGHT © 1999 CANON INC.
Copy Start key
ON ON
STBY INTR SCFW
APVC
I
Figure 4-121
CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
SCRV SCFW
II
SCRV LSTR STBY
4-25