Epson 5510 - EMP 7250 XGA LCD Projector, Owner'S Manual, Page: 111 / 128

Problems with the Projector
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The temperature indicator is red.
The projector is overheating, which turns the lamp off
automatically. Let the projector cool for a few minutes,
then turn it back on. Make sure nothing is blocking the
ventilation vents.
The air filter may be clogged. Clean it as described in
Chapter 5 and then let the projector cool for a while.
If the projector continues to overheat after you clean the air
filter, the problem may be caused by damage to the cooling
fan or internal circuits. Contact a qualified service person.
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Warning:
Do not attempt to service this product yourself except
as specifically explained in this User’s Guide.