4-1
Maintenance
>
Important Notes of Maintenance
[CONFIDENTIAL]
4Maintenance
4 - 1 Important Notes of Maintenance
(1)
Precautions
Before starting disassembly, push the power switch to shutdown. And check the operation panel display disappears
certainly. Then, unplug the power cable from the wall outlet.
Do not touch a parts on the board just after turn off or unplug, since electric charge may remain in a capacitor on power
supply board. In order to discharge it, press power key for one second without power cord.
When handling PWBs (printed wiring boards), do not touch with bare hands. And pay attention not to get damaged the
board.
Do not touch ICs on the PWB with bare hands or any object that have static charge.
When disconnecting the connector with hook, be sure to release the hook.
Take care not to get the cables pinched at work.
To reassemble the parts, use the original screws.
If the types and the sizes of screws are not sure, refer to the parts list.
(2)
Handling and storage of the drum unit
Pay attention of following notes when handling and storing the drum unit.
When detaching the drum unit from the main unit, never expose the drum surface to strong direct light.
Keep the drum unit at a temperature between -20°C/-4°F and 40
℃
/104°F and at a relative humidity 85% or less. Leave
at least 5 seconds from OFF to ON. Avoid abrupt changes in temperature and humidity thought it is within the specified
range.
Avoid exposure to any substance which is harmful to or may affect the quality of the drum unit.
Do not touch the drum surface with any object.
Do not touch by hands or gloves.
If the drum unit is touched by hands or stained with oil, clean it.
(3)
Storing the toner container
Store the toner containers in a cool, dark place.
Avoid exposing the toner containers to direct light and high humidity.
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