General Cautions; Pcu (Photoconductor Unit); Transfer Roller; Scanner Unit - Ricoh B039 Service Manual

3. REPLACEMENT AND ADJUSTMENT

3.1 GENERAL CAUTIONS

Do not turn off the main switch while any of the electrical components are active.
Doing so may result in damage to units (such as the PCU) as they are pulled out or
replaced.

3.1.1 PCU (PHOTOCONDUCTOR UNIT)

The PCU consists of the OPC drum, charge roller, development unit, and cleaning
components. Observe the following precautions when handling the PCU.
1. Never touch the drum surface with bare hands. If the drum surface is dirty or if
you have accidentally touched it, wipe it with a dry cloth, or clean it with wet
cotton and then wipe it dry with a cloth.
2. Never use alcohol to clean the drum. Alcohol will dissolve the drum surface.
3. Store the PCU in a cool dry place.
4. Do not expose the drum to corrosive gases (ammonia, etc.).
5. Do not shake a used PCU, as this may cause toner and developer to spill out.
6. Dispose of used PCU components in accordance with local regulations.

3.1.2 TRANSFER ROLLER

1. Never touch the surface of the transfer roller with bare hands.
2. Be careful not to scratch the transfer roller, as the surface is easily damaged.

3.1.3 SCANNER UNIT

1. Use alcohol or glass cleaner to clean the exposure and scanning glass. This
will reduce the static charge on the glass.
2. Use a blower brush or a water-moistened cotton pad to clean the mirrors and
lenses.
3. Take care not to bend or crease the exposure lamp's ribbon cable.
4. Do not disassemble the lens unit. Doing so will throw the lens and copy image
out of focus.
5. Do not turn any of the CCD positioning screws. Doing so will throw the CCD out
of position.
SM 3-1
GENERAL CAUTIONS
B039/B040/B043