Convergence, Poor convergence | Daewoo 710B instruction

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Daewoo 710B service manual Convergence, Poor convergence

Contents

Service Manual XGA COLOR MONITOR Model 710B CONTENTS Fire & Shock Hazard SAFETY PRECAUTIONSSafety Check Implosion Protection Symbols as marked on equipment GENERAL SAFETY INFORMATIONSymbols in the manual Terms in the manual SERVICING PRECAUTIONS General Servicing Precautions Electrostatically Sensitive ES Devices General Soldering Guidelines “Small-Signal” Discrete Transistor Removal/Replacement IC Removal/ReplacementReplacement Removal TECHNICAL INFORMATION Power IC, Transistor or Devices Removal/ReplacementDiode Removal/Replacement GENERAL INFORMATION Abbreviations Caution For Servicing PIN CONNECTORCAUTIONS FOR ADJUSTMENT AND REPAIR OPERATION & ADJUSTMENT ADJUSTMENT KEY CONTRAST ADJUSTMENT PROCESSRECALL BRIGHTNESS OSDOn-Screen Display Menu ROTATION Choose different preset color temperatures or set your own customized Self Diagnosis No Character TROUBLESHOOTING HINTS1. No Character 2. No Raster No Raster 3. A missing Color One color is missing 4. Abnormal OSD Font Abnormal OSD Font 5. Horizontal Output Circuit Trouble in Horizontal output circuit No Raster input pin of IC501 Unstable pictureIs H.Sync correct? 6-2. V.OSC/Deflection Circuit Unstable or Abnormal picture 7. Focus Monitor remains unfocused 7-1. Dynamic Focus Focus is poor 8. Convergence Poor convergence changed, is the H.size changed? 9. Abnormal Picture 9-1. Horizontal SizeAbnormal H.Size 1.Check B+ section of TDA9109 and its ambient circuit 9-2. Vertical Size Abnormal V.Size 10. High Voltage Circuit Trouble in H.V circuit No Raster 11. Side-Pincushion Circuit Side-Pincusion distortion is excessive or barrel 12. Power Supply Unit P.S.U Trouble in P.S.U 8.7V DC? of C104 13V DC?13V DC? Pre-Adjustment ALIGNMENT PROCEDUREStandard Adjustment Conditions Main Adjustment l Repeat e,f,g,h,i,j DIAGRAM PCB LAYOUT Main PCB Component Side Main PCB Solder Side Video PCB Component Side Video PCB Solder Side Page EXPLODED VIEW DIAGRAM Abbreviation of Description REPLACEMENT PARTS LISTImportant Safety Notice PART-NAME CIRCUIT BOARD ELECTRICAL PARTS LISTPART-CODE PART-DESC PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PART-CODEPART-NAME PART-DESC PRINTED DATE NOV.1998 OVERSEAS SERVICE DEPTServ ce Manual DAEWOO ELECTRONICS CO