LG 32PC50, Руководство по обслуживанию

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Only for training and service purposes
2. Protect mode
(1) Symptom
1) After lighting once it does not discharge minutely from the module.
2) The relay falls.(there is an audible “Click”.)
3) The color of the front LED turns from green to red.
(2) Follow check
Is the Power Board
normal ?
Replace Power Board.
Is the output the normal Low/High
voltage except for the Stand-by 5V?
Yes
No No
Are all the connectors
normal?
Replace the connector.
Replace the fuse.
Replace the Y-Board.
After checking each connector does
is operate correctly?
Yes
No No
Is the Y-Board
normal?
Is the
appropriate
fuse (FS2,FS1) on the
Y-B/D?
Is the output voltage
normal after removing the
P1 connector of the Y-B/D?
Yes
No No
Is the X- Board
normal?
Is the
output voltage normal
after removing the P11, P12,
P13 connector of
the X-B/D?
After removing the P12 and the output
voltage is normal : Replace the Right X-B/D
After removing the P11, P13 and the output
voltage is normal : Replace the Left X-B/D
No
Yes
Start Check