
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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.: 323 025 1204
tYPe 8a 250V Fuse
LittLe Fuse iNc. tYPe 21500.8
How to replace the fuse
1. The fuse is placed on the filter board under the main board. Re-
move the cabinet top and main board.
. 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 fol-
lowing to the below procedure.
How to reset the thermal switch
1. Insert the sharp tool like a screwdriver into a hole on the cabinet
from the cabinet bottom.
. Press the reset button on the thermal switch with the screwdriver.
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
Lamp cover switch
(SW901)
Summary of Contents for LC-XB41N
Page 62: ...62 IC Block Diagrams BA7078 Sync Separator IC5301 AN5870 Signal Switch IC5201...
Page 63: ...63 IC Block Diagrams FA5502 P F Control IC601 BA9743 DDC Control IC5751...
Page 64: ...64 IC Block Diagrams HIN202EIB RS 232C Driver IC3801 FA7711 DC DC Converter IC5801...
Page 66: ...66 IC Block Diagrams L3E01060 Level Shift IC2501 IC2531 IC2561 LM4889 Audio Output IC5031...
Page 67: ...67 IC Block Diagrams NJW1141 Audio Control IC5001 M62334 DAC IC3501...
Page 68: ...68 IC Block Diagrams PW190 Scaler IC301 STR Z2156 Power OSC IC651...
Page 69: ...69 IC Block Diagrams TE7783 Parallel I O Expander IC1802...
Page 108: ...KM6BC May 2007 2007 Eiki Internatinal Inc A key to better communications...