Samsung NK17A Series Service Manual page 17

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