Ricoh FT5580 Service Manual page 46

12 June 1987
3. Erase Lamp
1. A narrower lead edge erase margin increases the possibility of fusing
jams. At least 1.0mm of margin is necessary to prevent fusing jams.
2. After cleaning the erase lamp filter, discharge any static charge on the
filter surface with a finger before replacing the unit.
4. Optics
1. A small amount of Iauna oil should be used to lubricate the following
parts:
a) Scanner Guide Rods
b) Scanner Guide Rod Pads
c) Lens Housing Guide Rods
Clean the exposure glass with glass cleaner and a dry cloth to reduce
2.
static electricity on the glass which attracts foreign
oil, etc.).
3. Do not touch the following parts with bare hands:
a) Reflectors
b) Exposure lamps
c) Mirrors and lens
4. Do not bend or crease the ribbon cable of the exposure lamp and the
fiber cables.
5. To move the scanner manually, use the scanner guide bracket, not the
scanners which are easily damaged.
6. Do not touch the surface coat of the mirrors with your fingers. When
replacing the mirrors, make sure the surface coat faces the optical
path.
7.
Even when the lamps are off, there is voltage present across them.
Make sure that the power is off when working in this area.
8. Clean mirrors and lens with water or silicone cloth only.
5. Development Unit
1. Do not force the development roller to turn opposite to the normal
direction of rotation because the gears may be damaged.
2. Be careful not to nick or scratch the development roller sleeve (which
is made of aluminum).
3. Always make sure that there are no splits in the upper brush seal.
Splits in the upper brush will cause toner scattering.
2-22
substances (dust,