Sanyo PLC-XC50 Service Manual

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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 completely.
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 (SW902) inside of the projector to detect
the internal temperature rising abnormally. When the internal tem-
perature reaches near 80˚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. Remove the cabinet top.
2. Press the reset button on the thermal switch with the screwdriver.
CAUTION:
Before press the reset button, make sure that the AC cord must be
disconnected from the AC outlet.
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-
jector, it will automatically turn off by operating one of the following protection circuits.
Thermal switch (SW902)
Circuit Protections
Lamp cover switch
(SW901)
Filter switch
The filter switch (SW903) is to detect the condition of filter cartridge
installation. The projector can not turn on if the filter cartridge is not
installed correctly. Check the handle on the filter cartridge is set into
"Close" position.
Filter switch (SW903)

Sanyo PLC-XC50 Specifications