LCD TV SERVICE MANUAL - diagramas.diagram...

2. Protection mode
Symptom
1) After once shining, it doesn’t discharge minutely from module.
2) The relay falls. ( The sound is audible "Click")
red from green .
3) It is converted w ith the color where the front LED is
Start check
Replace the power board
Is output the no rmality Low/High
Voltage except Stand-by 5V?
NO
Is the PSU
no rmal?
YE S
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After connecting we ll each
connector the normality it operates?
NO
Replace the power board
Is the each
connector norma l?
YE S
Replace Y-B/D
Is no rmal the output voltage after
remove P1 connector of Y-B/D?
NO
Is no rmal the fuse
(FS2 ,FS3 ) on Y-B/D?
NO
Is t he Y- Board
no rmal ?
- 15 -
Replace the fuse
YE S
YE S
Replace Z -B/D
Is no rmal the output voltage after
remove P1 connector of Z-B/D?
NO
Is no rmal the fuse
(FS1 ,FS2 ) on Z-B/D?
NO
Is the Z - Board
no rmal ?
YE S
Replace the fuse
YE S
After remove P100,110 output voltage normality:
Re place Ri ght X-B/ D
Afte r remo ve P200,210 output voltage normality:
Replace Left X- B/D
Is normal the output voltage
after remove P100,110,200, 210
connector of X- B/D?
NO
Is t he X- Board
no rmal ?
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