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Appendix
-55
Maintenance indicator
Problem
Cause Possible solution
Temperature
warning
indicator
Normal
Abnormal
Off
Red on
(Standby)
The internal
temperature is
abnormally high.
Abnormal
• Blocked air intake
• Relocate the projector to an area
with proper ventilation (see page
7).
• Cooling fan break-
down
• Internal circuit failure
• Clogged air intake
• Take the projector to your nearest
Sharp Authorized Service Center
or Dealer for repair.
• Clean the exhaust and intake
vents. (See page 53.)
Lamp
indicator
Red on
(Standby)
The lamp does
not illuminate.
• Burnt-out lamp
• Lamp circuit failure
• Carefully replace the lamp. (See
page 57.)
• Take the projector to your nearest
Sharp Authorized Service Center
or Dealer for repair.
• Please exercise care when
replacing the lamp.
Red on
Time to change
the lamp.
• Remaining lamp life
becomes 5% or less.
Green on
Green blinks
when the lamp
is warming up
or shutting
down.
Info
• If the temperature warning indicator illuminates and the projector enters the standby mode, check whether
any of the ventilation holes are blocked (page 7) and then try turning the power back on. Wait until the
projector has cooled down completely before plugging in the power cord and turning the power back on.
(At least 10 minutes.)
• If the power is turned off for a brief moment due to power outage or some other cause while using the
projector, and the power supply recovers immediately after that, the lamp indicator will illuminate in red
and the lamp may not be lit. In this case, unplug the power cord from the AC outlet, replace the power
cord in the AC outlet and then turn the power on again.
• Do not unplug the power cord after the projector has entered the standby mode and while the cooling fan
is running. The cooling fan runs for about 90 seconds.
The lamp does
not illuminate.
—
• Disconnect the power cord from
the AC outlet, and then connect it
again.
DT400_E_P53_60.p65 04.10.18, 1:25 PM55