Daewoo 710B service manual Convergence, Poor convergence

Page 26

8. Convergence

8. Convergence

Poor convergence

Is

convergence Yes on the center area

bad?

No

Is

convergence on the Yes fringe area bad?

Adjust static convergence

Adjust D.Y Location

Refer to Adjustment procedure of convergence

24

Image 26

Contents Service Manual XGA COLOR MONITOR Model 710BCONTENTS Fire & Shock Hazard SAFETY PRECAUTIONSSafety Check Implosion ProtectionSymbols as marked on equipment GENERAL SAFETY INFORMATIONSymbols in the manual Terms in the manualSERVICING PRECAUTIONS General Servicing PrecautionsElectrostatically Sensitive ES Devices General Soldering Guidelines“Small-Signal” Discrete Transistor Removal/Replacement IC Removal/ReplacementReplacement RemovalTECHNICAL INFORMATION Power IC, Transistor or Devices Removal/ReplacementDiode Removal/Replacement GENERAL INFORMATION AbbreviationsCaution For Servicing PIN CONNECTORCAUTIONS FOR ADJUSTMENT AND REPAIR OPERATION & ADJUSTMENT ADJUSTMENT KEYCONTRAST ADJUSTMENT PROCESSRECALL BRIGHTNESSOSDOn-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 Raster3. A missing Color One color is missing4. Abnormal OSD Font Abnormal OSD Font5. Horizontal Output Circuit Trouble in Horizontal output circuit No Rasterinput pin of IC501 Unstable pictureIs H.Sync correct?6-2. V.OSC/Deflection Circuit Unstable or Abnormal picture7. Focus Monitor remains unfocused7-1. Dynamic Focus Focus is poor8. Convergence Poor convergencechanged, is the H.size changed? 9. Abnormal Picture 9-1. Horizontal SizeAbnormal H.Size 1.Check B+ section of TDA9109 and its ambient circuit9-2. Vertical Size Abnormal V.Size10. High Voltage Circuit Trouble in H.V circuit No Raster11. Side-Pincushion Circuit Side-Pincusion distortion is excessive or barrel12. Power Supply Unit P.S.U Trouble in P.S.U8.7V DC? of C104 13V DC?13V DC? Pre-Adjustment ALIGNMENT PROCEDUREStandard Adjustment Conditions Main Adjustmentl Repeat e,f,g,h,i,j DIAGRAM PCB LAYOUT Main PCB Component SideMain 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-DESCPART-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