Samsung NK17A specifications No Video PC Signal

Page 17

5 Troubleshooting

5-2 No Video (PC Signal)

Power indicator is green.

Yes

Does the signal appear

3at C306, C398, C397

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

4appear at X201?

Yes

No

No

No

No

Check CN401 and cable.

Check related circuit of IC350.

Check R354 and related

circuit of R354.

Check X201 and related

circuit of X201.

CONFIDENTIAL

Does the clock pulse appear at

output of RA301~RA306?

Yes

Replace LCD Panel.

WAVEFORMS

3Full White R, G, B Input (C306, 398, 397)

No

Replace RA301 ~ RA306, IC300.

4X201

5-2

NK15A*/NK17A*

Image 17
Contents TFT-LCD TV/MONITOR Confidential Safety PrecautionsElectrostatically Sensitive Devices ESD Precautions Servicing PrecautionsSpecifications Product SpecificationsSUB Pin AssignmentsTiming Chart Supported Modes ∝ s Confidential Replacement Order of Lamp Assemblies DisassemblyReassembly General Alignment Instuction Alignments and AdjustmentsEntering Factory Mode Factory Mode AdjustmentsConfidential Memo No Power TroubleshootingNo Video PC Signal No Picture TV, Video, S-Video, Scart Confidential No Sound Does the signal appear atConfidential Exploded View and Parts List NK15A NK17A Assy Stand NK17NS PCB+SH/PCB SCREW-TAPTITE BH,+,B,M3,L6,ZPCYEL,SWRCH18A Heat SINK-IC DIODE-ZENER IC-VIDEO Process R232 R805 R504 R512 Network CERAMIC,CHIP C853 C116 C3AA C849 C354 AL,SMD C115 INDUCTOR-SMD CORE-FERRITE Bead CIS CARD-REGISTRATION BOX,12P,1R,2.5mm,STRAIGHT,SN BN83-00284A D017 IC-AUDIO AMP R026 R643 R038 R678 R438 Chip C542 C465 02nF,5%,50V,NP0,TP,1608 022nF,5%,50V,NP0,TP,1608 C015 C332 AL,SMD AL,SMD SNA SNA SNA FT811 PAD-PALLET Cover EK-04,40V,1.5A,DO-41 BN83-00272A DIODE-SCHOTTKY IC-VIDEO Process R526 R618 R115 R654 R645 Chip C538 C237 C3AA C040 C306 AL,SMD C870 120uF,20%,6.3V,WT,TP,10.3x10.3x10.3mm,9 CRYSTAL-SMD Lever TOP LSD210TL,PE-LD,WHITE,TFTLCD Assy LCD NK17NS BN83-00086A DIODE-SWITCHING TR-SMALL Signal R002 R525 R044 R248 R503 Chip IC621 C091 C059 C3AA C216 AL,SMD C284 Organic INDUCTOR-SMD +SH/PCB SCREW-TAPTITE BH,+,B,M3,L10,ZPCYEL,SWCH10 Block Diagram NK15A*/NK17A Block Diagrams Wiring Diagram Schematic Diagrams CPU Block & Signal Processing Part Schematic Diagram Schematic Diagrams1IC011 #1 RF-CVBS 2IC011 #5 S-Video 3IC011 #8 VCR IC011 #19 AGDP5 Scaler & Digital Output Part Schematic DiagramX201 To Speaker DC Power Input, Sound, Tuner, ETC Part Schematic DiagramIC801 #2 IC805 #1 BN81-00027C-00