Sanyo PLC-XU75, Service Manual

Page: 5 / 104

-5-
Fuse
A fuse is located inside of the projector. When the POWER indicator
is not lightning, the fuse may be opened. Check the fuse as follow-
ing steps.
The fuse should be used with the following type;
Fuse Part No.: 323 021 7804
tYPe t6.3AH 250V FuSe
LIttLe FuSe INc. tYPe 21506.3
How to replace the fuse
1. The fuse is placed on the filter board. Remove the cabinet top
following to the Cabinet Disassembly.
. Take the fuse off, and replace the new one with the specified type.
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 (SW90) inside of the projector to detect
the internal temperature rising abnormally. When the internal tem-
perature 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. Remove the cabinet top.
. Press the reset button on the thermal switch.
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 projec-
tor, it will automatically turn off by operating one of the following protection circuits.
Thermal switch (SW90)
Fuse
Circuit Protections