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4 Troubleshooting
4-3 No Video (DIGITAL)
Check signal cable connection and
power.
1
X400 oscillate properly?
Yes
Is there input data at
5
4
R122, R124, R127, R128,
R129 and R130?
Yes
Is there waveform
7
at R131, R132?
Yes
Does the output signal appear
at Pin 8~13,15,16,18~23,25~30
of CN400?
Yes
There are DC 5V at Pin 1, 2
and 3 of CN400?
Yes
Replace LCD Panel.
4-4
No
No
6
No
No
No
Replace or check related circuit.
Check input part.
Check input part.
Check IC401,IC402 and related
circuit.
Check the panel EN signal at R218
and BL_EL signal at R612.
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