Other - Epson EMP-S4 Service Manual

3.2.9 Other

START
Is the projector making
abnormal noise?
No
Is the projector overheating?
No
Are there any image
problems?
No
Is there any abnormal
odor or smoke?
SEIKO EPSON
EMP-S4
Yes
Check for any objects around the Exhaust Fan, Intake Fan and Power Supply Fan.
The cause might be a malfunction of the power supply unit (pulse transformer
vibration, etc.).
Yes
Malfunction of the Lamp Thermistor or Safety Switch.
Malfunctioning or dirty Exhaust Fan, Intake Fan or Power Supply Fan. Clean
or replace as necessary.
Dirty air filter.
Malfunction of the Optical Engine.
Yes
Malfunction of Optical Engine
Malfunctioning or dirty Light Guide Unit (lenses, mirrors, etc.).
Dirty Projection Lens.
Malfunctioning or dirty Light Valve. Replace the Optical Engine and MA Board.
Yes
Charring of cables due to excessive heat. Replace any damaged cables and
resolve the overheating problem.
Dust burning due to heat. Make sure the air filter is not damaged, and check for
excessive heat.
3-14 Revision:B