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CHAPTER 10 TROUBLESHOOTING
10-45
III. TROUBLESHOOTING IMAGE FAULTS
A. Initial Checks
1. Site Environment
a. Make sure that the power supply is as specified (±10%).
b. Avoid high temperature/humidity conditions; near water faucets, water boilers, and
humidifiers. Avoid areas subject to excessively low temperature, sources of fire, and
dust.
c. Avoid areas subject to ammonium gas.
d. Avoid areas subject to direct rays of the sun; otherwise, instruct the user to provide
curtains.
e. Make sure the room is well ventilated.
f. Make sure that the floor will keep the machine level.
Check the site to see if it complies with the above requirements.
2. Checking the Originals
Identify the problem as to whether it is caused by the machine or the original used.
a. Originals with a reddish tinge result in copies with poor contrast; for example, red
sheets and slips.
Reference:
The operation of the following heaters may be controlled by the user by changing
the respective settings; at time of shipment, the settings are at OFF—this means
the copier may remain connected or disconnected at night. If the use of any of the
heaters proves to be necessary because of unique site conditions, the copier
should remain powered at night without disconnecting its power plug.
• fluorescent lamp heater (accessory)
• lens mount heater
• No. 2 mirror mount heater
b. Diazo copies or originals with high transparency can result in copies that can be
mistaken for foggy copies. Originals prepared in pencil can result in copies that can
be mistaken for light copies.
3. Checking the Copyboard Cover and the Copyboard Glass
Check the copyboard cover and the copyboard glass for dirt; if soiled, clean them using
a solution of mild detergent or alcohol; if scratched, replace them.
4. Checking the Paper
a. Check if the paper is Canon-recommended paper.
b. Check if the paper is dry; try paper fresh out of the package.
COPYRIGHT
©
1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)