Epson PowerLite 5000 Service Manual

EPSON PowerLite 5000 Service Manual
2-6
2.2 POWER SUPPLY UNIT
The power supply unit includes a DC regulator, intake fan, and interlock switch for the
lamp cover. This unit generates the voltages for the control circuit (+3.3 V, +5 V, +12 V,
+22 V) and for the light source lamp (+350 V) from AC input.
The PBS thermistor is installed on the side of the power supply intake fan and is retained
with a clamp on the power supply unit. It detects the temperature. If it senses overheating,
it shuts off the regulator output via the main board. Although a functional diagram is shown
below, never disassemble the power supply unit at field maintenance service.
Figure 2-5
Functional Block
Connects to
CN800 on the
main board
(DC output and
power control
signals)
Interlock Switch
Power Cable for
Light Source
PBS Thermistor
Intake Fan
REGULATORFILTER/
RECTIFIER
+12 V
+22 V
+5 V
350 V
LAMP
INTAKE FAN
SAFETY SW
INTERLOCK SW
AC IN
N/C
N/C
+3.3 V
PBS Thermistor
MAIN
BOARD
C
N
8
6
0
CN800
Figure 2-6

Epson PowerLite 5000 Specifications

General

Brand	Epson
Model	PowerLite 5000
Category	Projector
Language	English