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Circuit Protections
This LCD projection TV provides the following circuit protections to operate in safety. If the abnormality occurs
inside the LCD projection TV, it will automatically turn off by operating one of the following protection circuits.
A fuse(F601) is located inside of the LCD projection TV.
When the POWER indicator is not lightning, the fuse may be
opened. Check the fuse as following steps.
The fuse should be used with the following type;
●
Fuse
●
Thermal switch
Fuse
FILTER UNIT
PRESS
PRESS
Thermal Switch
(Reset button)
Fuse Part No. : 423 022 2102
TYPE T4.0AH 250V FUSE
LITTEL FUSE INC. TYPE 215004
How to replace the fuse
1.
Remove the cabinet bottom cover and Filter unit following to
"Mechanical Disassemblies".
2.
Remove the fuse from fuse holder on the Filter Board.
To install the fuse, take reversed step in the above.
There is the thermal switch (SW902) inside of the LCD
projection TV to prevent the internal temperature rising
abnormally. When the
internal temperature reaches near 80°C, turn off the AC
main power supply automatically.
The thermal switch is not reset to normal automatically
even if the internal temperature becomes normal. Reset
the thermal switch following procedure.
Check the resistance between terminals of thermal switch
by using a tester. If it has high impedance, thermal switch
may be in open.
How to reset the thermal switch
1.
Remove the optical / chassis unit following to "Mechanical
Disassemblies".
2.
Press the reset button on the thermal switch with a sharp-
pointed tool.
CAUTION:
Before press the reset button, make sure that the AC cord
must be disconnected from the AC outlet.
Fig. A-1
Fig. A-2
Be
efore p
Be
press t
p
e
et bu on, make sure tha
t
the AC co d
Th
ins
s LCD pro ction TV pr
id s the
low ng ci cuit p
ccurs
ality o
norm
he ab
ty. If t
n safe
rate i
o ope
