Manuals / Samsung / Computer Equipment / Computer Monitor

Samsung 530TFT No Video of Alternate Vertical Line, No OSD, User Controls Don’t Work, Waveforms

Models: 330TFT 531 TFT 331 TFT 530TFT 530 TFT 531TFT

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6 Troubleshooting

6-3 No Video of Alternate Vertical Line

One or more even or odd vertical lines do not display.

Does the waveform appearNo

6	at Pin 20 of CN301?
	at Pin 20 of CN301?
		Yes
		Yes

Replace IC311 or check its

related circuit.

WAVEFORMS

6CN301 #5~20

Replace LCD panel.

CH1 RMS = 1.18 V

6-4 No OSD

There is video but no OSD.

While pushing a front control

15button does any pulse appear

at Pin 12 of IC307?

Yes

Replace IC308.

No	Do sync signals appear at Pins 5
16

17and 10 of IC307?

Yes

Replace IC307 or check its

related circuit.

Check IC306 and related circuits.

WAVEFORMS

15IC307 #12

CH1 RMS = 2.2 V

16IC307 #5

CH1 RMS = 1.7 V

17IC307 #10

CH1 RMS = 4.3 V

6-5 User Controls Don’t Work

Does the DC level change at	No
Does the DC level change at
Pins 11 and 12 of IC401 when you


push the front panel button?
push the front panel button?

Check the buttons. (SW861 ~ SW866)

Yes

Go to 6-4 No OSD Display.

6-4	SyncMaster 33TFT/53TFT

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Samsung 530TFT, 530 TFT, 531 TFT, 531TFT No Video of Alternate Vertical Line, No OSD, User Controls Don’t Work, Waveforms

Contents

SyncMaster 330TFT SyncMaster 530TFT SyncMaster 331TFT SyncMaster 531TFTSERVICE Manual CONTENTSPrinted in Korea Code No. BN68-60017A 1 Precautions 1-1 Safety Precautions1-1-4 Product Safety Notices 1-1-1 Warnings1-2 Servicing Precautions 1-3 Electrostatically Sensitive Devices ESD Precautions1-2-1 General Servicing Precautions 2-1 List of Abbreviations, Symbols and Acronyms 2 Reference Information2-1-1 Abbreviations 2-1-2 Symbols 2-1-2 AcronymsProgrammable Read only Memory 3 Product Specifications 3-1 Specifications3-2 Pin Assignments Pin No3-3 Timing Chart ModeTiming Mode Timing60 x 640/67 Hz4-1 Control and Connectors 4 Operating InstructionsLocation MENU4 Operating Instructions 4-1-2 SyncMaster 330TFT/530TFTFigure 4-3. Front View and Control Figure 4-4. Rear View Table 4-2. Front Panel Controls4-2 Microprocessor Controls and Functions 4-2-1 OSD Window4-4 Power Management System 4-3-1 Audio Adjustments4-3 Audio Controls 5 Disassembly and Reassembly 5-1 Disassembly5-1-2 Main Body Disassembly 5-1-1 Removing the Stand5-1-3 Stand Disassembly 3. Remove the 10 screws from the stand assembly 4. Remvoe the hinge, neck front, PCB, signal cable5 Disassembly and Reassembly 5. Remove the screw and washer on the base of the stand5-2 Replacement Order of Lamp Assemblies 13.3” 5-3 Replacement Order of Lamp Assemblies 15” 5-4 Reassembly 5 Disassembly and Reassembly6 Troubleshooting 6-1 No Power6-2 No Video Does the sync pulses appear atWAVEFORMS 6-3 No Video of Alternate Vertical Line 6-4 No OSD6-5 User Controls Don’t Work WAVEFORMS6-6 No Sound SyncMaster 330TFT/530TFT Does the DC 5 V appear at Pin 5 of CN806, Pin 4 of IC803?6-8 Headphones Don’t Work SyncMaster 330TFT/530TFT 6-7 Microphones Don’t Work SyncMaster 330TFT/530TFT9 Electrical Parts List 9-1 Main PCB PartsSpecification Loc. No9 Electrical Parts List SpecificationLoc. No Description9 Electrical Parts List SpecificationSyncMaster 3*TFT/53*TFT Loc. No9 Electrical Parts List SpecificationLoc. No DescriptionSpecification Loc. NoCode No DescriptionSpecification Loc. NoDescription RemarksSpecification Loc. NoCode No DescriptionSpecification Loc. NoDescription Remarks9 Electrical Parts List SpecificationSyncMaster 3*TFT/53*TFT Loc. NoSpecification R-CHIP R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK R-NETWORK RELAY-POWER SWITCH-SLIDE VR-ROTARY OSCILLATOR-CLOCK OSCILLATOR-CLOCK CRYSTAL-UNIT DIODE-ZENER DIODE-ZENER DIODE-ZENER DIODE-ZENER DIODE-ZENER DIODE-ZENERLoc. No Description9-2 Sub PCB Parts SpecificationLoc. No Code No9 Electrical Parts List SpecificationLoc. No Description9 Electrical Parts List SpecificationSyncMaster 3*TFT/53*TFT 9-13Others SpecificationLoc. No Code No8 Block Diagram LVDS xLCD PANEL AudioMemo 8 Block Diagrams10-2 Semiconductor Lead Identification TYPE NO REF. NOTYPE NO REF. NO11 Wiring Diagram AUDIO FUNC PCBLCD PANEL SMPS12 Schematic Diagrams 12-1 DAC & IO Part Schematic DiagramPower Line Signal Line12 Schematic Diagrams SyncMaster 33*TFT/53*TFT12-2 Table 12-1. IC10212-2 ZOOM & FRC Part Schematic Diagram Power LineSignal Line 12 Schematic Diagrams SyncMaster 33*TFT/53*TFT12-4 Table 12-6. IC30912-3 Micom Part Schematic Diagram Power Line1024 x 768 / 85 Hz 1024 x 768 / 85 Hz12-4 Sub Part Schematic Diagram 12 Schematic DiagramsSyncMaster 33*TFT/53*TFT 12-612 Schematic Diagrams Memo