Service manual

3-13

EMP-S3

SEIKO EPSON Revision:B

3.2.8 Other

START

Yes

Is the projector making abnor-

mal noise?

• 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

Is the projector overheating? • 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

Are there any image

problems?

• 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

Is there any abnormal

odor or smoke?

• 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.