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HOW TO USE THIS SECTION
[1] Scope and Precautions
This section provides detailed information about the
adjustment items and procedures. Before addressing
customer complaints, perform the following checks:
1.
Check whether the power supply voltage meets
the specifications.
2.
Check whether the power supply is properly
grounded.
3.
Check whether this machine shares the power
supply with any other machine that draws large
current intermittently (e.g., elevator and air con-
ditioner that produce electrical noise).
4.
Check whether the installation environment is
good.
a. The machine must be installed in a properly
ventilated area not exposed to high tempera-
ture, high humidity, and direct sunlight.
b. The machine must be installed on the horizon-
tal floor.
5.
Check whether original has a problem to cause
the defective image.
6.
Check whether the selected density value is cor-
rect.
7.
Check whether the surface of the platen glass
and the bottom of the RADF are clean.
8.
Check whether correct paper is used for copy-
ing.
9.
Check whether copying materials and parts (e.g.,
developer, drum, and cleaning blade) are replen-
ished and replaced when they reach the end of
the useful life.
10.
Check whether toner remains.
When servicing the machine, observe the following
precautions:
1.
Only either side of the AC line is shut off when
the main power of this machine is turned off.
Always unplug the power cord before starting the
service work. If it is necessary to service the
machine with the power on, take care not to be
caught in the scanning gear of the exposure unit.
2.
Special care should be taken when handling the
fixing unit because it operates at extremely high
temperatures.
3.
The developing unit has a strong magnetic field.
Keep watches and measuring equipment away
from it.
4.
Take care not to damage the drum with tools and
so on.
5.
Do not touch IC pins with bare hands.
1 - 1
ADJUSTMENT
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