Samsung 203B service manual No Video PC Digital Signal

Page 36

4 Troubleshooting

4-3 No Video (PC Digital Signal)

1Is Pin9 of

CN501(BKLT_EN)high(3.3V)?

Yes

Does the Digital video

11signal appear at

R129~R136?

Yes

Does the proper clock pules

10appear at Pin6,7

of the CN201?

Yes

No

No

No

Check TFT_LCD panel or inverter

and connection between then.

Check PC signal.

Check IC301 and 302.

Replace LCD Panel.

4-5

Image 36

Contents LCD-Monitor Copyright TrademarksContents Front …………………………………………………………………………………………………………………………………… Page Adjust buttons FrontMenu button MagicBright buttonPower button RearAuto button Page Using the Stand Removing the baseAttaching a Base Monitor Mounting interface padMemo Disassembly Back cover open JIG BH81-00001ADescription Picture Description Reassembly 11-4 Circuit Descriptions Block descriptionBlock operating MicomTechnical Terms Resolution Dot PitchVertical Frequency Horizontal FrequencyConnecting the Monitor Pin Assignments Sync TypeTiming Chart ModeTiming Preset Timing Modes Panel Description Vendor P/N14-8 14-9 14-10 Fashion Feature SpecificationsLS20BRD feature Feature Operating method Auto AutoSpec Comparison ModelOption Specification Item NameRemark Troubleshooting No PowerWaveforms No Video PC Analog Signal Waveforms No Video PC Digital Signal Waveforms Exploded View and Parts List LS20HABKSQ/XAA Exploded ViewROUND SimpleCODE-NO Specification & Description QTY SA/SNA Remark LHA20BSLS20HABESQ/EDC Exploded ViewSLIDING has COVER-REARS/M 203B,HIPS,HB,BK24,HAS Electrical Parts List Electrical Parts List Level Loc. No Code No Micom QSG LS20HABESQ/EDC Parts list Sliding has D230 2007-000082 C310 Assy BOXLS20HABESQ/EDC Wiring Diagram Memo Schematic Diagrams Schematic Diagrams1Schematic Diagrams Schematic Diagrams2 +3.3VARPLL DgndSchematic Diagrams