Ricoh FT4430, Руководство по обслуживанию

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16 April ’88
SERVICE REMARKS
1. Handling the Drum
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Never touch the drum surface with
Store the drum in a cool dry place.
bare hands.
Always wear gloves when cleaning the drum.
Only prime the drum with setting powder when installing new drum.
Never expose the drum to light for a long time.
Drum conditioning is necessary when a new drum is installed. In addition,
it is useful at the following times:
. When image density is reduced due to over-exposure of the drum.
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After cleaning the drum.
Always keep the drum in the protective sleeve when inserting or pulling
the drum out of the copier.
Before inserting or pulling out the drum, the cleaning unit should be
pulled slightly out to avoid drum damage by the pick-off pawls.
Return used drums to the distributor according to standard procedure.
2. Charge Corona
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Clean the corona wires with a dry cloth or by sliding the corona unit in
and out. Do not use emery paper or any solvent for wire cleaning.
Do not touch the corona wires with oily hands. Oil stains may cause white
bands on copies.
Make sure that the corona wires are correctly positioned between the
cleaner pads and there are no threads on the casing.
When adjusting the drum current, always make sure that the axis of drum
shoe is aligned with the corona wire.
The corona wire height should be adjusted only when:
a) The front end block is replaced.
b) The drum charge current is uneven.
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