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V.
CHARGING/CLEANING
A. DRUM CARTRIDGE
1. Removing the Drum Cartridge
1) Open the front door and unscrew the
screw.
@ Developing
unit
release lever
Screw
@® Drum cartridge
@ Developing unit
Figure 4-48
2) Swing the developing unit release lever
counterclockwise.
3) 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:
If the photosensitive
drum
is exposed
to
light of an
intensity
of 1500
lux for 5
minutes then left in a dark location for a
further
5 minutes,
it will recover
to the
extent that copies can
be made
without
problem.
The
drum
should
never
be ex-
posed to direct sunlight, however,
which
have an intensity of 10,000 and 30,000 lux.
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.
4-16
COPYRIGHT © 1988 CANON INC..
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.
CANON: NP-1215 REV.O MAR. 1988 PRINTED IN JAPAN (IMPRIME AU JAPON}
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