Drum Cartridge - Canon NP-1015 Service Manual

V. CHARGING/CLEANING
A. DRUM CARTRIDGE
1. Removing the Drum Cartridge
1) Open the front door and unscrew the
screw.
@ Drum cartridge @ Developing unit
@ Develooina unit
release lever
0
Screw
2)
3)
Figure 4-45
Swing the developing unit release lever
counterclockwise.
Slowly pull the drum cartridge to the
front.
Note:
Take care not to damage the drum.
The photosensitive drum is adversely
affected by strong light, so blank areas or
black bands may occur if the drum is
exposed to strong light for a long period.
After removing the drum cartridge from the
copier, wrap the photosensitive drum in a
light blocking sheet (or a few sheets of
blank copy paper) and put it in a dark place.
For reference:
The OPC drum used in the copier is sensi-
tive to light. Exposure even to room light can
result in poor transfer or black strips. Be
sure to wrap the OPC drum with a light
blocking sheet (copy paper if not available)
and place it in the dark on a flat surface
whenever it is removed from the copier.
As a general rule, do not switch the
copier ON with the drum cartridge removed
or with the covers and doors open. If the
copier is switched ON with the drum car-
tridge removed, the trouble described in 1.
below with occur. If it is switched ON while
it is open, the trouble described in 2. will
occur.
1. The registration rollers and transfer
guide will be touching each other. If the
registration rollers rotate (as in WMUPR),
they will be damaged.
4-14 COPYAIGHT 0 1988 CANON INC.
CANON NP4015/1215S RN.0 OCT. 1988 PAlNTE9 IN JAPAN [IMPRIME AU JAPONI
Note:
Do not press the COPY START key.
2. Cleaning
,/'-_
If the photosensitive drum is dirty, wipe
it with a flannel cloth sprinkled with toner.
Do not use lintfree paper.
Never clean the photosensitive drum with
a dry cloth.
Never clean the drum with drum cleaning
powder or solvent.