Check The Thermal Switch - InFocus ScreenPlay 7205 Service Manual

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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, you need to check the thermal switch operation. First, power up the

projector with the top off (page 64). Let the projector run until it shuts down. Measure the resistance at the

switch. If the resistance is infinity (Ω), replace the safety switch assembly, which includes the thermal

switch.

Go to remove and replace the safety switch assembly on page 45.

SP7205 Service Manual

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