Samsung 205BW service manual No Video PC Analog Signal

Page 30

4 Troubleshooting

4-2 No Video (PC Analog Signal)

5Is pin9 of

CN500(BKLT_EN)high(3.3V)?

Yes

Does the analog video signal

6appear at R134, 136, 138

(Red,Green,Blue)?

Yes

7Does the X300

oscilate Properly?

Yes

Does the proper clock pules

8appear at Pin6,7 of

the CN400?

Yes

No

No

No

No

Check TFT_LCD panel or inverter

and connection between then.

Check pc signal.

Check the X300.

Check CN400.

Replace LCD Panel.

4-3

Image 30

Contents SERVICEManual Copyright TrademarksContents Front …………………………………………………………………………………………………………………………………… Page Menu button Adjust buttonsFront MagicBright buttonPower button RearAuto button Page Using the Stand Removing the baseAttaching a Base Monitor Mounting interface padMemo PCB Diagram Memo Disassembly and Reassembly DisassemblyReassembly Circuit Descriptions Block descriptionBlock operating MicomReference Infomation Technical TermsVertical Frequency ResolutionDot Pitch Horizontal FrequencyConnecting the Monitor Pin Assignments Sync TypeTiming Chart ModeTiming Preset Timing Modes Panel Description Vendor P/N14-8 14-9 14-10 Troubleshooting No PowerWaveforms No Video PC Analog Signal Waveforms No Video PC Digital Signal Waveforms Required Equipment Alignments and AdjustmentsAutomatic Color Adjustment DDC Edid Data InputService Function Spec How to Display Service Function OSDHidden Key list Function Action methodDDC Input MethodWindows Program Execution Items after replacing the main board After Replacing the Maing BoardMemo Electrical Parts List LS20HAWCSZ/EDC Parts ListHdcp Level Loc. No Code No Electrical Parts List C201 Micom BOX Memo Block Diagram Block Diagrams Wiring Diagram Memo Precautions Safety PrecautionsServicing Precautions Electrostatically Sensitive Devices ESD PrecautionsInstallation Precautions Memo

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