Circuit Protections; Thermal Switch; Fuse; Lamp Cover Switch - Sanyo PDG-DXL2000 Service Manual

Circuit Protections

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

There is the thermal switch (SW902) inside of the projec-
tor to detect the internal temperature rising abnormally.
When the internal temperature reaches near 120˚C, the
thermal switch opens to cut off the power to the power
circuit.
The thermal switch can be reset itself automatically
when the internal temperature becomes normal.
When the internal temperature reaches near 80˚C, the
thermal switch returns automatically.

Fuse

A fuse is located inside of the projector. When the POW-
ER indicator is not lighting, the fuse may be opened.
Check the fuse as following steps.
The fuse should be used with the type listed right;
How to replace the fuse
1. T he fuse is placed on the filter board behind the opti-
cal unit. Remove the cabinet top.
2. T ake the fuse off from the filter board, and replace the
new one with the specified type.
Thermal switch
(SW902)
Lamp cover switch
(SW901)

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.
Fuse Part No.: 323 025 1204
tYPe 8A 250V FuSe
LIttLe FuSe INC. tYPe 215008
-5-
Fuse
(F601)