Ricoh M080, Руководство по обслуживанию

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General
SM 4-1 M080
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4. REPLACEMENT AND ADJUSTMENT
4.1 GENERAL
4.1.1 PRECAUTIONS ON DISASSEMBLY
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Always turn off the main power switch and unplug the machine before attempting any
of the procedures in this section.
Use extreme caution when removing and replacing components. The cables in the machine are
located very close to moving parts; proper routing is a must.
After components have been removed, any cables that have been displaced during the
procedure must be restored as close as possible to their original positions. Before removing any
component from the machine, note any cable routings that may be affected.
Before servicing the machine:
1. Verify that documents are not stored in memory.
2. Remove the print cartridge before you remove parts.
3. Unplug the power cord.
4. Work on a flat and clean surface.
5. Replace with authorized components only.
6. Do not force plastic material components.
Make sure all components are returned to their original positions.
Laser Unit
1. Do not loosen or adjust the screws securing the LD drive board on the LD unit. Doing so will
throw the LD unit out of adjustment.
2. Do not adjust the variable resistors on the LD unit, as these are permanently adjusted at
the factory. If replacement of the LD drive board is necessary, replace the entire LD unit.
3. Keep the polygon mirror and toroidal lens free of dust. Laser performance is very sensitive
to dust on these components.
4. Do not touch the shield glass or the surface of the polygon mirror with bare hands.
5. Do not adjust the Laser Synchronization detector on the LD unit, as these are permanently
adjusted at the factory. If the position of the Laser Synchronization detector has changed
from the factory set position, SC 322 will be shown.
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.