Samsung 205BW service manual No Video PC Digital Signal

Page 32

4 Troubleshooting

4-3 No Video (PC Digital Signal)

1Is Pin9 of

CN500(BKLT_EN)high(3.3V)?

Yes

Does the Digital video

9signal appear at R100 ~ R107?

Yes

Does the proper clock pules

8appear at Pin6,7

of the CN400?

Yes

No

No

No

Check TFT_LCD panel or inverter

and connection between then.

Check PC signal.

Check IC300.

Replace LCD Panel.

4-5

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Contents SERVICEManual Copyright TrademarksContents Front …………………………………………………………………………………………………………………………………… Page Adjust buttons FrontMenu button MagicBright buttonAuto button Power buttonRear 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 TermsResolution Dot PitchVertical Frequency Horizontal FrequencyConnecting the Monitor Pin Assignments Sync TypeTiming Timing ChartMode 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 Alignments and Adjustments Automatic Color AdjustmentRequired Equipment 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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