Epson DREAMIO EH-TW2900, Service Manual

Page: 48 / 107

EH-TW3500/4500/5500 Disassembly and Assembly CONFIDENTIAL
SEIKO EPSON 48 Revision A
3.1.2 Precautions
The precautions given below must be always observed whenever you disassemble/
reassemble the projector to maintain the quality.
3.1.3 Workflow
„
Never touch the current-carrying part section during a test operation,
signal measurement or any other situations that is necessary to perform the
repair/maintenance work with the power turned on and the cover removed.
Do not wear the metal products such as wrist watch, cuff buttons, rings,
tiepin etc. to avoid getting a electric shock.
„
When disassembling/assembling, be sure to turn off the power switch and
pull out the power cable from the projector beforehand.
„
Be sure to wear the gloves during the repair/maintenance work to avoid
injuries by the parts with sharp edges such as metal plate or the like. To
protect sensitive circuitry, follow the instructions below.
• When disassembling or reassembling, be sure to wear static discharge
equipment such as an anti-static wrist strap and a mat.
• When replacing the circuit component such as a board or the optical
engine, be sure to contact the anti-static case containing the new one to
the metal part of this product before taking it out.
„
Disconnect any interface cables from the projector.
„
Before disassembling the projector, make sure to clean any dust or dirt on
the air filter, interface section and outer case using a vacuum cleaner or
other method.
Disassembly
Disassemble the product
following the given instructions.
Repair/Maintenance
Perform the repair and cleaning,
etc.
Finish
Safety Check after servicing
Refer to “Safety Check after
servicing
(p.96) ”, and carry out
the safety checks.
When carrying out repair or
maintenance of a safety device.
Reassembly
Unless otherwise specified,
reassembly is the reverse of the
disassembly procedure.