Service Remarks; General Caution; Drum - Ricoh A109 Service Manual

1. SERVICE REMARKS

1.1 GENERAL CAUTION

Do not turn off the main switch intentionally while any of the electrical
component is active.
Doing so might cause damage to the units such as transfer belt, transfer
roller, development, etc. when they are pulled in or out from the copier.

1.2 DRUM

The organic photoconductor (OPC) drum is more sensitive to light and
ammonia gas than a selenium drum. Follow the cautions below when
handling an OPC drum.
1. Never expose the drum to direct sunlight.
2. Never expose the drum to direct light of more than 1,000 Lux for more
than a minute.
3. Never touch the drum surface with bare hands. When the drum surface
is touched with a finger or becomes dirty, wipe with a dry cloth or clean
with wet cotton. Wipe with a dry cloth after cleaning with wet cotton.
4. Never use alcohol to clean the drum; alcohol dissolves the drum surface.
5. Store the drum in a cool, dry place away from heat.
6. Take care not to scratch the drum as the drum layer is thin and is easily
damaged.
7. Never expose the drum to corrosive gases such as ammonia gas.
8. Always keep the drum in the protective sheet when keeping the drum
unit, or the drum itself, out of the copier. Doing so avoids exposing it to
bright light or direct sunlight. This will protect the drum from light fatigue.
9. Before pulling out the drum unit, place a sheet of paper under the drum
to catch any spilt toner.
10. Dispose of used drums according to local regulations.
11. When removing the drum from the drum unit, release the pressure of the
drum cleaning blade by moving the knob.
FSM 4-1 A109