Epson EMP-X5 Service Manual

2-7
EMP-822/EMP-83/EMP-X5/EMP-S5
SEIKO EPSON Revision:A
2.3 Temperature Control
The internal temperature of this projector is monitored by the sensors (the Lamp thermistor, L/
V thermistor) in order to protect the projector from internal overheat, which may cause unsafe
state or damage to the projector. The fans’ revolutions are controlled according to the detected
temperature data. The fans’ revolutions are altered by changing the driving voltage based on
the detected data. In this way, the ventilation level is optimized and the internal temperature is
kept stabilized.
2.3.1 Sensors and Switches
The fans and sensors mounted in this product, and the routes of air flow are shown below.
Figure 2-5.
Part Name Function
Intake Fan A/B
Take in fresh air from the intake duct (with Air Filter) located in the bottom of
the projector, and supply it to the Light Valves R/G/B.
P/S Fan Ventilates the circuit boards of the PS Ballast Assy.
Lamp Fan Ventilates the inside of the Lamp Unit.
EX Fan Exhausts the heated air generated inside the projector to the outside.
EX Fan
TH Board
(Lamp Thermistor)
Lamp Fan
P/S Fan Intake Fans
Lamp (Heat source)
PS Ballast
(Heat source)
POP (Susceptible to heat)
TH Board
(PS Ballast)

Epson EMP-X5 Specifications

General

Resolution	1024 x 768 (XGA)
Contrast Ratio	400:1
Lamp Life	3000 hours (Normal Mode), 4000 hours (Eco Mode)
Display Technology	3LCD
Zoom Ratio	1.2x
Projection Size	30 - 300 inches
Brightness	2200 lumens
Weight	2.7 kg
Inputs	Composite video, S-Video
Noise Level	35 dB (standard), 28 dB (economy)