Erase Lamp - Ricoh FT5535 Service Manual

1.4 OPTICS
1. When installing the exposure glass, make sure that the mark on the edge of
the glass faces up. This makes sure that the correct side faces up; this side
has a smoother surface and generates less static electricity. This is especially
important when the ARDF is installed.
2. When moving the 1st or 2nd scanners, always hold them at the center. Move
them slowly, carefully, and gently. Abrupt movement may cause the belt to
slip into the wrong position on the scanner drive pulleys.
3. Do not bend or crease the exposure lamp flat cable.
4. Do not touch the following parts with bare hands:
a) Reflectors
b) Exposure lamp
c) Mirrors and lens
d) ADS and V patterns under the left scale bracket
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5. To clean the mirrors and lens, use only a clean soft cloth dampened with
alcohol or water.
6. The mirror surface with the reflective coating must face the light path. The
spring plates must contact the reverse side of the mirror (the side without the
reflective coating).
7. If you ever adjust the exposure lamp voltage with SP4-001, be sure to
perform auto ADS gain adjustment (SP4-201) and forced V
(SP3-105) immediately afterwards. This is because ADS gain data and V
data will be cleared if SP4-001 is performed.

1.5 ERASE LAMP

1. A narrower lead edge erase margin increases the possibility of fusing jams.
The margin should be at least 1.0 mm.
2. After cleaning the erase lamp unit, rub it lightly with your finger to discharge
any static electricity on the surface.
FSM 4-3
detection
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REF
FT5535/4527/4522