Daewoo 531X service manual Side-Pincushion Circuit

Page 28

10. Side-Pincushion Circuit

Pincusion distortion is excessive or barrel

Select the

side-pincushionYes icon in OSD menu,

and adjust acceptable

position.

No

Is the

pin 11 waveform of Yes IC501

correct?

No

Trouble in IC501

O.K

Check the Base waveform of the Q515

26

Image 28

Contents XGA Color Monitor Contents Safety Precautions Safety CheckFire & Shock Hazard Implosion ProtectionGeneral Safety Information Symbols in the manualSymbols as marked on equipment Terms in the manualServicing Precautions General Servicing PrecautionsElectrostatically Sensitive ES Devices General Soldering GuidelinesIC Removal/Replacement ReplacementSmall-Signal Discrete Transistor Removal/Replacement RemovalDiode Removal/Replacement Power IC, Transistor or Devices Removal/ReplacementTechnical Information General Information AbbreviationsPIN Connector Pin SignalOperation and Adjustment Control PanelKey Process OSD Functions Adjust the horizontal picture moire cancellation Alignment Procedure Standard Adjustment ConditionsPre-Adjustment Method to launch the factory modePage No Character Troubleshooting HintsNo Character No Raster No RasterMissing Color One color is MissingAbnormal OSD Font Abnormal OSD FontHorizontal Output Circuit VGAUnstable Picture Horizontal Unstable PictureVertical Focus Monitor remains UnfocusedConvergence Poor convergenceAbnormal Picture Horizontal Size Abnormal SizeVertical Size Side-Pincushion Circuit Power Supply Unit P.S.U Trouble in P.S.UU O.K Diagram BlockPCB Layout Main PCB Solder Side CRT PCB Component Side CRT PCB Solder Side Schematic Diagram Power & Connection SectionControl & Vert. out Section Horizontal Section Video Section Exploded View Diagram Information of Part Description Important Safety NoticeAbbreviation of Description Electrical Parts List PART-NAME PART-DESCLOC LED Metal Film Diode TVR1G TPA1 686, AHYEON-DONG MAPO-GU SEOUL, Korea