Epson EMP-TW1000 User Manual

2-18
EMP-TW1000
SEIKO EPSON Revision:A
LV Thermistor
This is a backup overheating prevention sensor mounted on the upper surface of the Optical
Engine (Prism Unit). To prevent damage to the surrounding components from overheating, the
power save controller on the MA board first provides a warning indication through the warning
indicator LED, and stops the output of the ballast when the temperature rises above a given
level.
Figure 2-22. LV Thermistor
Thermistor and Temperature Sensor Operation
Analog/Digital converters in IC550 on the MA board detect the temperatures of the Optical
Engine and Power Supply sections by means of the two thermistors at intervals of 1 second.
Based on the measurement results, the CPU controls fan operations and power supply
shutdown operations as necessary.
See Section 2.8.2 for more information on fan operation, and Section 2.9 for more information
on the LED status indicators.
Table 2-4. Temperature Sensors
Condition Warning Indicator Meaning
Normal temperature Off Normal operation in progress
Warning temperature Flashes orange
If temperature rises any higher, projection
stops.
Abnormal temperature Steady red Overheating (no projection)
Internal error Flashes red
Problem with fans, thermistors or
temperature detection circuit
LV Thermistor

Epson EMP-TW1000 Specifications

General

Brand	Epson
Model	EMP-TW1000
Category	Projector
Language	English