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Circuit Protects
Lamp cover switch
The lamp cover switch (SW901) cuts off the drive signal to the
lamp circuit when the lamp cover is removed or not closed com-
pletely. After opening the lamp cover for replacing the lamp
ass'y, place the lamp cover correctly otherwise the projector can
not turn on.
thermal switch
There is the thermal switch (SW90) inside of the projector to de-
tect the internal temperature rising abnormally. When the inter-
nal temperature reaches near 100˚C, the thermal switch opens to
stop the operation of the power supply circuit.
The thermal switch cannot be reset itself automatically even if
the internal temperature becomes normal. Reset the thermal
switch following to the below procedure.
How to reset the thermal switch
1. Insert the sharp tool like a screwdriver into a hole on the cabi-
net from the cabinet bottom.
. Press the reset button on the thermal switch with the screw-
driver.
CAUtIoN:
Before press the reset button, make sure that the AC cord must
be disconnected from the AC outlet.
Lamp cover switch (SW901)
Thermal switch (SW90)
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