Compaq iP-40 - Manual (Page 48)

E-
When the power has failed (When all the LED go off with the power ON)
 Measures to be taken
1. Disconnect the power plug from the outlet.
2. Check the following matters and perform the countermeasure properly.
Maintenance
Is the ambient temperature
in excess of 35°C (95°F)?
Are the ventilation vents
blocked?
Breakdown of an internal
circuit could be the problem.
Please use the projector in an operation ambient tempera-
ture of 0°C (32°F) to 35°C (95°F).
Rearrange the setup location of the projector and separate
the projector from surrounding objects. See "Do Not Block
the air vents" on Page E-4.
Please request repair at your store of purchase.
Is the air filter blocked?
Clean the air filter.
See "Cleaning the Air Filter" on Page E-50.