LG 42LB9R, Руководство по обслуживанию

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2. Protect mode
(1) Symptom
1) After once shining, it does not discharge minutely from module.
2) The relay falls.(The sound is audible “Click”.)
3) It is converted with the color where the front LED is red from green.
(2) Check following
Is the Power Board
normal ?
Replace Power Board.
Is output the normality Low/High
voltage except Stand-by 5V?
Yes
No No
Is the each
connector normal?
Replace the connector.
Replace the fuse.
Replace Y-Board.
After connecting well each connector,
the normality it operates?
Yes
No No
Is the Y-Board
normal?
Is the fuse
(FS2,FS3) on Y-B/D
normal?
Is the output voltage
normal after remove P1
connector of Y-B/D?
Yes
No No
Replace Z-Board.
Is the Z-Board
normal?
Is the fuse
(FS1,FS2) on Z-B/D
normal?
Is the output voltage
normal after remove P1
connector of Z-B/D?
Yes
No
No
Is the X- Board
normal?
Is the
output voltage
normal after remove P1, 2,
3, 4, 5 connector of
X-B/D?
After remove P1, P2, P3 output voltage
normality: Replace Right X-B/D
After remove P4, P5 output voltage
normality: Replace Left X-B/D
No
Yes
Replace the fuse.
Yes