Manuals / Sierra Wireless / TV and Video / CRT Television

Sierra Wireless 800TFT specifications No OSD, Waveforms

Models: 800TFT

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5 Troubleshooting

5-3 No OSD

There is video but no OSD.

Does input signal appear

1112 13 at the Pins 2, 5 and

10 of IC404?

Yes

While pushing a front control button does any pulse appear at Pin 12 of IC404?

Yes

Replace IC404.

Check IC405 and related circuit.

Check IC404 and related circuit.

WAVEFORMS

CH1 RMS = 4.18V

CH1 RMS = 3.26V

5-4	SyncMaster 800TFT

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Sierra Wireless 800TFT specifications No OSD, Waveforms

Contents

CONTENTS SyncMaster 800TFT Toshiba PanelSERVICE Manual 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly1-1-4 Product Safety Notices 1 Precautions1-1 Safety Precautions 1-1-1 Warnings1-2 Servicing Precautions 1-3 Electrostatically Sensitive Devices ESD Precautions1-2-1 General Servicing Precautions 2 Product Specifications 2-1 SpecificationsType 2-2 Pin AssignmentsSync Pin NoVESA 2-3 Timing ChartMode TimingMemo 2 Product Specifications3-2 Reassembly 3 Disassembly and Reassembly3-1 Disassembly 3-1-2 Main Body Disassembly3 Disassembly and Reassembly Memo4 Alignments and Adjustments 4-2 Using the DDC Control JIG4-1 Required Equipment 4 Alignments and Adjustments Main Menu4-2-2 Sub Menu 4-2-14-2-3 b Color Auto Adjustment 4-2-3 Adjustment Procedures4-2-3 a When Replacing the AD Board 4 Alignments and Adjustments 4-2-3 c When Replacing the Panel4-3 Using the OSD Service function 4 Alignments and AdjustmentsFigure 4-5. Service Function Menu Screen 4 Alignments and Adjustments SyncMaster 800TFT5 Troubleshooting 5-1 No Power5-2 No Video Does the input signal appear at the Pins 40, 41 of IC 300? 7Do the clock and sync signal appear at Pin 115, 117 of IC 300? 9 5 Troubleshooting WAVEFORMSSyncMaster 800TFT 5-3 No OSD WAVEFORMS6 Exploded View and Parts List SyncMaster 800TFT6 Exploded View & Parts List SyncMaster 800TFT6 Exploded View & Parts List SyncMaster 800TFTMemo 6 Exploded View & Parts ListSpecification 7 Electrical Parts List7-1 Main PCB Parts Loc. NoLoc. No 7 Electrical Parts ListSpecification DescriptionCode No SpecificationLoc. No DescriptionLoc. No 7 Electrical Parts ListSpecification DescriptionCode No SpecificationLoc. No DescriptionCN102 SpecificationLoc. No DescriptionCode No SpecificationLoc. No DescriptionDescription SpecificationLoc. No RemarksSyncMaster 800TFT 7 Electrical Parts ListSpecification Loc. NoLoc. No 7 Electrical Parts ListSpecification DescriptionSyncMaster 800TFT 7 Electrical Parts ListSpecification 7-11Loc. No 7 Electrical Parts ListSpecification DescriptionCode No SpecificationLoc. No DescriptionIC404 8 Block DiagramVideo Switch Micro Control Unit8 Block Diagrams MemoINVERTER 9 Wiring DiagramSignal Cable 13W3 CABLE MAIN PCB9 Wiring Diagram Memo10 Schematic Diagrams 10-1 Signal input Part Schematic DiagramSyncMaster 800TFT 10-2 Scaler Chip Part Schematic Diagram10 Schematic Diagrams 10-210-3 Power input Part & LCD panel interface part Schematic Diagram 10 Schematic DiagramsSyncMaster 800TFT 10-4 Micom Part Schematic Diagram10 Schematic Diagrams 10-410-5 A/D converter Part Schematic Diagram 10 Schematic DiagramsPrinted in Korea P/N BN68-00049R-01 6 Exploded View and Parts List SyncMaster 800TFT6 Exploded View & Parts List SyncMaster 800TFT6 Exploded View & Parts List SyncMaster 800TFT6 Exploded View & Parts List Memo10 Schematic Diagrams 10-1 Signal input Part Schematic DiagramSyncMaster 800TFT 10-2 Scaler Chip Part Schematic Diagram10 Schematic Diagrams 10-210-3 Power input Part & LCD panel interface part Schematic Diagram 10 Schematic DiagramsSyncMaster 800TFT 10-4 Micom Part Schematic Diagram10 Schematic Diagrams 10-410-5 A/D converter Part Schematic Diagram 10 Schematic Diagrams