General Cautions; Drum - Ricoh A230 Service Manual

Rev. 7/98
4. SERVICE TABLES

4.1 GENERAL CAUTIONS

Do not turn off either the power switch while any of the electrical components are
active. Doing so might cause damage to units such as the transfer belt, drum, and
development unit when they are pulled out of or put back into the copier.

4.1.1 DRUM

An 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 it with a dry cloth or clean it 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, and will protect it from light fatigue.
9. Before pulling out the PCU, place a sheet of paper under the PCU to catch any
spilled toner.
10. Dispose of used drums in accordance with local regulations.
11. When installing a new drum in the PCU, the following must be done in the
stated order.
1) Remove the protective sheet after securing the new drum in the drum unit.
2) Make sure that the charge roller voltage supply is at the standard value
(SP2-001-1).
3) Do the ID Sensor Initial Setting procedure (SP 3-001-2)
4) Do SP2-805 (developer initialization).
12. When installing the PCU, make sure that the PCU is set in the machine
properly.
SM
4-1
GENERAL CAUTIONS
A230/A231/A232