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Appendix
53
• If the temperature warning indicator illuminates, and the projector enters standby mode, follow the
possible solutions above and then wait until the projector has cooled down completely before plug-
ging 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 illumi-
nate 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.
• The cooling fan keeps the internal temperature of the projector constant and this function is con-
trolled automatically. The sound of the cooling fan may change during operation because the fan
speed may change and this is not a malfunction.
• Do not unplug the power cord after the projector has entered standby mode and while the cooling
fan is running. The cooling fan runs for about 90 seconds.
Maintenance indicator
Problem
The internal
temperature is
abnormally
high.
The lamp does
not illuminate.
Time to change
the lamp.
The lamp does
not illuminate.
The power
indicator blinks
in red when the
projector is on.
Cause
• Blocked air intake
• Cooling fan
breakdown
• Internal circuit
failure
• Clogged air intake
• The lamp is shut
down abnormally.
• Remaining lamp life
becomes 5% or
less.
• Burnt-out lamp
• Lamp circuit failure
• The lamp unit cover
is open.
Possible Solution
• Relocate the projector to
an area with proper
ventilation. (see page 8)
• Take the projector to your
nearest Sharp Authorized
Service Center or Dealer
for repair.
• Disconnect the power cord
from the AC outlet, and
then connect it again.
• Carefully replace the lamp.
(See page 55.)
• Take the projector to your
nearest Sharp Authorized
Service Center or Dealer
for repair.
• Please exercise care when
replacing the lamp.
• Securely install the cover.
• If the power indicator blinks
in red even when the lamp
unit cover is securely
installed, contact your
nearest Sharp Authorized
Service Center or Dealer
for advice.
Abnormal
Red on
(Standby)
Red on
Red on
(Standby)
Red
blinks
Tempera-
ture
warning
indicator
Lamp
indicator
Power
indicator
Normal
Off
Green on
(Green
blinks
when the
lamp is
warming
up or
turning
off.)
Green on/
Red on
Green
blinks
(Cooling)
Info
DT-500_EN_l 06.2.16, 10:03 AM53