General Cautions - Ricoh Aficio MP2550B Service Manual

General Cautions

3.2 GENERAL CAUTIONS
3.2.1 PCU (PHOTOCONDUCTOR UNIT)
The PCU consists of the OPC drum, development unit, charge roller, and cleaning unit.
Follow the cautions below when handling a PCU.
Never touch the drum surface with bare hands. When the drum surface is touched or
becomes dirty, wipe it with a dry cloth or clean it with wet cotton. Wipe with a dry cloth
after cleaning with the cotton.
Never used alcohol to clean the drum; alcohol dissolves the drum surface.
Store the PCU in a cool, dry place away from heat.
Never expose the drum to corrosive gases such as ammonia gas.
Never shake the used PCU. Doing so may cause toner and/or developer to spill out.
Dispose of used PCUs in accordance with local regulations.
Turn off the main power switch and disconnect the power cord before you start any of
the procedures in this section. To prevent toner leakage, never loosen or remove the
screws shown in the illustration below.
3.2.2 TRANSFER ROLLER UNIT
Never touch the transfer roller surface with bare hands.
Take care not to scratch the transfer roller as the surface is easily damaged.
3.2.3 SCANNER UNIT
Clean the exposure glass with alcohol or with glass cleaner to reduce the amount of
static electricity on the surface of the glass.
Use a blower brush or a cotton pad with water to clean the mirrors and lens.
Do not bend or crease the exposure lamp flat cable.
D017/D018/D019/D020 3-2 SM