X1 Service Guide 86
Check the Thermal Switch
The thermal switch is designed to open when the temperature inside the projector gets too high. When
the switch opens, the power supply shuts down, turning the projector off.
When the projector shuts down after operating for a few minutes or when the lamp fails to strike after
repeated attempts at startup, check the thermal switch. First, power up the projector with the top off (page
80). Let the projector run until it shuts down. Measure resistance across the terminals at the thermal
switch. If the resistance is infinite (Ω), replace the lamphouse, which includes the thermal switch.
Go to remove and replace the lamphouse. (page 45)
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