4 SERVICE
Main Precautions for Maintenance
1. Points to be confirmed before mainte-
nance
Prior to maintenance, talk to the opera-
tor concerning the symptoms of the
machine to help determine the correc-
tive maintenance action that must be
taken.
2. Copy sample
Make copy samples at the start and
end of maintenance to compare
images.
3. Drum
a) Never expose the drum to sunlight. Also
avoid exposing the drum to indoor light
as much as possible.
When the drum unit or drum is remove
from the machine, ensure that it is cov-
ered with a drum cover.
b) When replacing the drum, toner guide
roller, or cleaning blade, refer to the sec-
tion that provides instruction for remov-
ing and installing a cleaning blade.
4. After replacing the drum and developer,
refer to the List of Adjustments to deter-
mine the adjustments that must be
made following the replacement.
5. After completing maintenance work,
reset the PM counter using the 25
mode.
6. When replacing the fixing unit cleaning
web, developer, and drum, reset the fix-
ing unit cleaning web counter using the
36 mode.
7. When replacing the toner cartridge,
wait until the toner supply LED on the
operation panel flashes before the
replacement.
Caution:Turn the main power switch
(SW1) off and pull out the power
cord from the wall outlet prior
to maintenance.
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