Sony VPH-G90E, Service Manual

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VPH-G90E/G90U/G90M
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Overview
Overview
Overview
Precautions
On safety
• Check that the operating voltage of your unit is identical with the voltage
of your local power supply. If voltage adaptation is required, consult with
qualified Sony personnel.
• Should any liquid or solid object fall into the cabinet, unplug the unit and
have it checked by qualified personnel before operating it further.
• Unplug the unit from the wall outlet or set the MAIN POWER switch to
OFF if it is not to be used for several days.
• To disconnect the cord, pull it out by the plug. Never pull the cord itself.
• The wall outlet should be near the unit and easily accessible.
• The unit is not disconnected from the AC power source (mains) as long
as it is connected to the wall outlet, even if the unit itself has been turned
off.
On installation
• When the projector is mounted on the ceiling, the Sony PSS-90 Projector
Suspension Support must be used for installation. Read the installation
manual of the PSS-90 carefully, since the ceiling should be reinforced for
safety.
• Allow adequate air circulation to prevent internal heat build-up. Do not
place the unit on surfaces (rugs, blankets, etc.) or near materials (curtains,
draperies) that may block the ventilation holes. Leave space of more than
30 cm (12 inches) between the wall and the projector. Be aware that room
heat rises to the ceiling; check that the temperature near the installation
location is not excessive.
• Do not install the unit in a location near heat sources such as radiators or
air ducts, or in a place subject to direct sunlight, excessive dust or
humidity, mechanical vibration or shock.
Overview
9
Overview
• To avoid moisture condensation, do not install the unit in a location
where the temperature may rise rapidly.
• Fans are installed inside the projector to prevent internal heat build-up.
The fans produce a humming noise when the power is switched on, which
is normal. Should the noise sound abnormal, please consult qualified
Sony personnel.
On illumination
• To obtain the best picture, the front of the screen should not be exposed
to direct lighting or sunlight.
• Ceiling-mounted spot lighting is recommended. Use a cover over
fluorescent lamps to avoid lowering the contrast ratio.
• Cover any windows that face the screen with opaque draperies.
• It is desirable to install the projector in a room where floor and walls are
not of light-reflecting material. If the floor and walls are of reflecting
material, it is recommended that the carpet and wall paper be changed to
a dark color.
On operation
To turn on the projector after the projector has been turned off due to a
brief loss of power, press the ON key on the remote commander, or turn
off the MAIN POWER switch so that the STANDBY indicator turns off
and then turn on the MAIN POWER switch.
On cleaning
• To keep the cabinet looking new, periodically clean it with a soft cloth.
Stubborn stains may be removed with a cloth lightly dampened with a
mild detergent solution. Never use strong solvents, such as thinner,
benzene, or abrasive cleansers, since these will damage the cabinet.
• Avoid touching the lens. To remove dust on the lens, use a soft dry cloth.
Do not use a damp cloth, detergent solution, or thinner.