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3. Abnormal/No screen (All input)-Main PCBA
Abnormal/No screen
(all input)
1
Put into LVDS cable completely?
LVDS cable have damage?
2
Is 12V at 1pin of P101?
3
Check waveform at signal
line of P101 (Clock:9,10
Data: 6,7,12,13,15,16,18,19)
Change module
WAVEFORMS
3
9,10Pin of P101
(Clock line)
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Only for training and service purposes
YES
YES
YES
6,7,12,13,15,16,18,19 Pin of 1201
If LVDS cable isn't insulted enough,
NO
Insult LVDS cable until locking hook.
If LVDS cable have damage,
If is not under 1.5V at R722,
change Q721 or check open and short
NO
of Line among Q720 and Q721.
Of line between L110 and P101.
NO
Of line between Q720 and P101.
Or Check LVDS cable have damage.
Another is change IC501.
(Data Line)
- 12 -
Change LVDS cable
If is under 11V at L110,
Check open and short
Check open and short
LGE Internal Use Only
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