Canon PC720 Service Manual - Page 26

Using, Density, Correction, Switch, Cleaning

Page 26 highlights

INNGENERAL DESCRIPTION F. Using the Density Correction Switch If the copy density is too high, i.e., the image is too dark, in density adjustment mode (AE or manual), you may switch among three copy density settings using the Density Correction switch. 1) Shift up the open/close lever to open the body. 2) Change the position of the density cor- rection switch. O G. Cleaning If the images tend to be soiled or copy paper tends to jam frequently, advise the user to clean the following parts: 1. If Images Are Soiled a. Copyboard Glass/Copyboard Cover Wipe it with a moist cloth; then, dry wipe it. If the dirt cannot be removed, wipe it with a cloth moistened with mild detergent solution, and dry wipe it. b. Cassette Pick-Up Roller 1) Remove the cassette. 2) Open the right cover. 3) Keep the separation pad down, wipe the cassette pick-up roller with a cloth moistened with alcohol or water* while rotating the roller in the direction of pick-up. *Be sure to wring it well. Lighte Darker Figure 1-420 Caution: Do not make copies until the cassette pick-up roller has dried completely. Cassette pick-up roller Separation pad Figure 1-421 1 - 18 COPYRIGHT © 1994 CANON INC. CANON PC720/7408EORT0 REVS AUG. 1994 PRINTED IN JAPAN tIMPRIME AU JAPONI

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INN
GENERAL
DESCRIPTION
F.
Using
the
Density
Correction
Switch
If
the
copy
density
is
too
high,
i.e.,
the
image
is
too
dark,
in
density
adjustment
mode
(AE
or
manual),
you
may
switch
among
three
copy
density
settings
using
the
Density
Correction
switch.
1)
Shift
up
the
open/close
lever
to
open
the
body.
2)
Change
the
position
of
the
density
cor-
rection
switch.
O
Lighte
Figure
1-420
Darker
G.
Cleaning
If
the
images
tend
to
be
soiled
or
copy
paper
tends
to
jam
frequently,
advise
the
user
to
clean
the
following
parts:
1.
If
Images
Are
Soiled
a.
Copyboard
Glass/Copyboard
Cover
Wipe
it
with
a
moist
cloth;
then,
dry
wipe
it.
If
the
dirt
cannot
be
removed,
wipe
it
with
a
cloth
moistened
with
mild
detergent
solu-
tion,
and
dry
wipe
it.
b.
1)
2)
3)
Cassette
Pick
-Up
Roller
Remove
the
cassette.
Open
the
right
cover.
Keep
the
separation
pad
down,
wipe
the
cassette
pick-up
roller
with
a
cloth
moist-
ened
with
alcohol
or
water*
while
rotat-
ing
the
roller
in
the
direction
of
pick-up.
*Be
sure
to
wring
it
well.
Caution:
Do
not
make
copies
until
the
cassette
pick-up
roller
has
dried
completely.
Cassette
pick-up
roller
Separation
pad
Figure
1-421
1
-
18
COPYRIGHT
©
1994
CANON
INC.
CANON
PC720/7408EORT0
REVS
AUG.
1994
PRINTED
IN
JAPAN
tIMPRIME
AU
JAPONI