Samsung 203B service manual No Video PC Analog Signal

Page 34

4 Troubleshooting

4-2 No Video (PC Analog Signal)

6Is pin9 of

CN501(BKLT_EN)high(3.3V)?

Yes

Does the analog video signal

7appear at R101,105, 108

(Red,Green,Blue)?

Yes

8Does the X201 and X200

oscilate Properly?

Yes

Does the proper clock pules

10appear at Pin6,7 of

the CN201?

Yes

No

No

No

No

Check TFT_LCD panel or inverter

and connection between then.

Check pc signal.

Check the X200, IC201.

Check IC302 and IC201.

Replace LCD Panel.

4-3

Image 34

Contents LCD-Monitor Copyright TrademarksContents Front …………………………………………………………………………………………………………………………………… Page Menu button Adjust buttonsFront MagicBright buttonRear Power buttonAuto 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 Vertical Frequency ResolutionDot Pitch Horizontal FrequencyConnecting the Monitor Pin Assignments Sync TypeMode Timing ChartTiming Preset Timing Modes Panel Description Vendor P/N14-8 14-9 14-10 Fashion Feature SpecificationsLS20BRD feature Feature Operating method Auto AutoSpec Comparison ModelItem Name Option SpecificationRemark 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