Canon Vizcam 1000, Service Manual

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COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
III. TROUBLESHOOTING IMAGE PROBLEMS
4. Checking the Charging Assem-
blies
a. Check each of the charging assemblies for dirt.
Check the charging wire/grid plate for a fault
(damage, deformation).
b. Check shield plate of each charging assembly.
(If necessary, dry wipe the part with lint-free
paper; then, use alcohol. If the dirt cannot be
removed, replace the part.)
c. Check the height of each charging wire.
d. Make sure that each charging assembly is
properly set.
e. Check the charging spring (especially of the
separation charging assembly) for rusting.
5. Checking the Developing Assembly
a. Check to make sure that the surface of the de-
veloping cylinder is covered with a uniform
coating of toner.
6. Checking the Paper
a. Check if the paper is of a type recommended
by Canon.
b. Check if the paper is moist.
Try making copies using fresh paper.
7. Checking the Periodically Replaced
Parts
a. Check the periodically replaced parts against
the Scheduled Servicing Chart, and replace
those that reached the end of their lives.
A. Initial Checks
1. Checking the Site of Installation
a. Make sure that the voltage at the power source
is as rated (±10%).
b. Make sure that the site is not subject to high
temperature/humidity (near a water
faucet,water boiler, humidifier) and is not cold,
not close to a source of fire, and not subject to
dust.
c. Make sure that the site is not subject to ammo-
nium gas.
d. Make sure that the site is free of direct rays of
the sun; otherwise, curtains are provided.
e. Make sure that the room is well ventilated.
f.
Make sure that the machine is kept level.Make
the above checks to see if the site meets the
requirements.
2. Checking the Originals
Try to find out whether the problem is due to the
type of original used or to the machine.
a. Check the density of the originals; for example)
a diazocopy original or an original with trans-
parency can produce copies that tend to be
mistaken for “foggy copies”; and originals pre-
pared in light pencil tend to produce copies that
tend to be mistaken for “light image copies.”
3. Checking the Copyboard Cover,
Copyboard Glass, and Standard
White Plate
Check the copyboard cover,copyboard glass,
and standard white plate for dirt. Clean the part if
soiled, and replace the part if damage is found.