Circuit Protections - Eiki LC-XNS2600 Service Manual

Circuit Protections

This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the projector,
it will automatically turn off by operating one of the following protection circuits.
Thermal Switch
There is a thermal switch inside the projector to detect the
lamp surrounding temperature rising abnormally. When
the temperature reaches near 100˚C, the thermal switch
cuts off the current supplied to the power supply circuit
and the projecor stops working.
The thermal switch will automatically reset when the
internal temperature becomes normal (less than 64˚C).
Lamp Cover Switch
When lamp cover is open or not closed securely, lamp
cover switch will cut off to interrupt the drive circuit.
After replacing the lamp unit, please replace the lamp
properly, otherwise, the projector can not be turned on.
Fuse
A fuse is located inside of the projector. When the
POWER indicator is not lighting, the fuse may be opened.
Check the fuse as following steps.
The fuse should be used with the following type;
How to replace the fuse:
1. Remove top cabinet, main board and fans.
2. Remove optical assembly and lamp assembly.
3. Remove lamp duct assembly.
5. Remove line filter board.
6. Replace the specified fuse and install the removed
parts back.
Fuse
-5-
Thermal Switch
Lamp Cover
Switch