CONFIDENTIAL
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
Summary of Contents for NK15A Series
Page 14: ...4 Alignments and Adjustments NK15A NK17A 4 3 CONFIDENTIAL ...
Page 15: ...Memo 4 Alignments and Adjustments 4 4 NK15A NK17A CONFIDENTIAL ...
Page 21: ...Memo 5 Troubleshooting 5 6 NK15A NK17A CONFIDENTIAL ...
Page 22: ...CONFIDENTIAL NK15A NK17A 6 1 6 Exploded View and Parts List 6 1 NK15A ...
Page 23: ...6 2 NK17A 6 Exploded View Parts List 6 2 NK15A NK17A CONFIDENTIAL ...
Page 105: ...8 Block Diagram 8 1 NK15A NK17A NK15A NK17A 8 1 CONFIDENTIAL ...
Page 106: ...8 Block Diagrams 8 2 NK15A NK17A CONFIDENTIAL 8 2 NK15A NK17A ...
Page 108: ...Memo 9 Schematic Diagrams 9 2 NK15A NK17A CONFIDENTIAL ...
Page 112: ...CONFIDENTIAL 10 Schematic Diagrams 10 4 NK15A NK17A X201 4 ...
Page 114: ...CONFIDENTIAL 10 Schematic Diagrams 10 6 NK15A NK17A IC801 2 1 IC805 1 2 ...
