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5 Troubleshooting
5-2 NK15A*/NK17A*
5-2 No Video (PC Signal)
Power indicator is green.
Does the signal appear
at C306, C398, C397
of R, G, B input?
Check CN401 and cable.
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Does the clock pulse appear at
output of RA351 ~ RA356?
Check related circuit of IC350.
Does the clock pulse
appear at R354?
Check R354 and related
circuit of R354.
Does the clock pulse
appear at X201?
Check X201 and related
circuit of X201.
Does the clock pulse appear at
output of RA301~RA306?
Replace RA301 ~ RA306, IC300.
Replace LCD Panel.
WAVEFORMS
Full White R, G, B Input (C306, 398, 397)
3
X201
4
3
4