Blank Exposure - Canon NP6412 Service Manual

C.

Blank Exposure

1. Removing the Blanking Exposure
Unit
1) Set the machine to the maximum ratio
(141%) as follows:
• Turn on the power, and select a default
ratio of 141%.
• Press the Copy Start key.
• When the lens has moved to the farthest
left, turn off the power.
• Disconnect the power plug.
2) Remove the front lower cover.
(See Chapter 7.III.A.2. "Removing the
Front Lower Cover.")
3) Remove the drum unit.
(See A.2. "Removing the Drum unit.")
4) Remove the DC controller PCB.
(See Chapter 7.III.E.1. "Removing the DC
controller PCB.")
5) Remove the composite power supply
PCB.
(See Chapter 7.III.E.2. "Removing the
Composite Power Supply PCB.")
6) Remove the two screws [1].
7) Remove the developing assembly.
(See D.2. "Removing the Developing As-
sembly.")
COPYRIGHT © 1999 CANON INC. CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
[1]
Figure 4-308
4-39