Circuit Protections; Thermal Switch; Lamp Cover Switch; Fuse - Eiki LC-WB200 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 (SW90) inside of the projector to detect
the internal temperature rising abnormally. When the internal tem-
perature reaches near 115˚C, the thermal switch opens to stop the
operation of the power supply circuit.
When the internal temperature reaches near 75˚C, the thermal
switch returns automatically.

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

A fuse is located inside of the projector. When the POWER indica-
tor is not lighting, the fuse may be opened. Check the fuse as fol-
lowing steps.
The fuse should be used with the following type;
Fuse Part No.: 323 021 7804
TYPE T6.3AH 250V FUSE
LITTEL FUSE INC. TYPE 21506.3
or
Fuse Part No, : 423 034 4101
TYPE T6.3AH 250V FUSE
Hollyland Co, Ltd. TYPE 50CT063H
How to replace the fuse
1. The fuse is placed on the filter board. Remove the cabinet top
following the "Mechanical Disassembly" .
. Take the fuse off from the fuse holder, and replace the new one
with the specified type.
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Thermal switch (SW90)
Lamp cover switch
(SW901)
Fuse