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Circuit Protections
Mechanical sensor switches (SW67A, SW7641)
This projector provides 2 mechanical sensor switches, the one is for filter
cartridge sensor switch (SW7641) and the other one is for lamp cover sensor
switch (SW67A). The filter cartridge sensor switch detects whether the filter
cartridge is installed correctly. If the filter cartridge is not installed correctly,
the projector cannot turn on.
The lamp cover sensor switch detects whether the lamp cover is closed se-
curely. If lamp cover is opened or not closed completely, the drive signal to
the lamp circuit is cut off. After opening the lamp cover for replacing the lamp
ass’y, place the lamp cover correctly otherwise the projector cannot turn on.
Filter cartridge sensor
switch (SW7641)
Lamp cover sensor
switch (SW67A)
Filter cartridge
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