Epson EMP-8000 - XGA LCD Projector, Service Manual

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EMP-9000/8000
3-4 Revision:A SEIKO EPSON
(4). Caution for field maintenance
Observe the following procedure, when you repair. Otherwise, display quality is not guaran-
teed, and also EPSON repair service is not available.
1. Do not disassemble the block. (Do not loosen any screws.)
2. If either the optical block or the Driver Board Assembly becomes wrong, replace them in
set. And when you send back them to us for repair, send back them in set (by optical
engine).
3. The optical block and the Driver Board Assembly make the optical engine set, so never
change its combination (e.g. use only the driver board1 for the other repair parts).
(5). Precautions
Precautions given to the individual assembly and disassembly procedures. Read them care-
fully before starting the assembly or disassembly procedure. A set of general precautions are
given below.
As you disassemble the main unit, dust that is sticked to the internal fans and air filters is likely
to migrate and contaminate the light valves R, G, and B which are the heart of the display
mechanism, thus deteriorating the display quality.
Accordingly, before reassembling, check the dust inside of the main unit and, if necessary,
clean them with a vacuum cleaner.
The light valves R, G, and B and circuit board assemblies are highly sensitive to static electric-
ity. When you remove a optical engine or circuit board ,place it in an antistatic bag immedi-
ately.
When you perform the assembly or disassembly operations listed below, check the pertinent
unit and its surfaces for any dirt before reinstalling them. If the unit is found dirty, clean it.
The speaker unit incorporates a permanent magnet. Keep it away from electromagnetic
media such as floppy disks and magnetic cards.
Handle the optical engine(projection lens and light guide units) with care as they are highly
susceptible to vibration and shock.
Do not try to disassemble any part (e.g., power supply unit) that is not covered in this manual.
1. Removing the optical engine.
2. Removing the lamp inner housing.
3. Removing the air filter.