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)
Содержание EMP 822
Страница 1: ...Service Manual Data Projector EMP 822 EMP 83 EMP X5 EMP S5 ...
Страница 9: ...Chapter 1 Product Specifications ...
Страница 20: ...Chapter 2 Theory of Operation ...
Страница 27: ...Chapter 3 Troubleshooting ...
Страница 50: ...Chapter 4 Disassembly Assembly ...
Страница 102: ...Chapter 5 Appendix ...