● Lamp cover switch
The lamp cover switch (SW8803) 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
This function (thermostat switch SW902) will not operate,
while the temperature monitor is operating normally. When
the internal temperature reaches near 90˚C, it cuts off the
AC main power supply .
If it has operated, it needs to be reset manually. Disconnect
the AC cord first and investigate the cause of overheating.
After servicing, reset the thermostat switch (SW902) as
shown in a figure.
CAUTION:
Before press the reset button, make sure that the AC
cord must be disconnected from the AC outlet.
● Fuse
-5-
■ Circuit Protections
This projector is equipped with the following protections to operate in safety. If the abnormality occurs
inside the projector, it will turn off the projector by operating one of the following protections.
The fuse is located on the ass'y-Inlet. When either the
LAMP indicator or the READY indicator is not illuminated,
fuse may be opened. Check the fuse as following steps.
1. Remove the ass'y-Inlet following to “Mechanical
Disassemblies”.
2. Remove the fuse from fuse holder.
3. Check the resistance of fuse by using the tester.
To install the fuse, take reversed step in the above.
It should be used the specified fuse as parts
list.
Fuse
Ass’y Inlet
SW902
Lamp Cover
Lamp Cover Switch (SW8803)
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