Daewoo 710B Side-Pincushion Circuit, Side-Pincusion distortion is excessive or barrel

Page 30

11. Side-Pincushion Circuit

11. Side-Pincushion Circuit

Side-Pincusion distortion

is excessive or barrel

Select the

side-pincushionYes icon on OSD menu,

and adjust acceptable

position.

	No
Is the pin 24		Yes
waveform of IC501

correct
	No

Is the		Yes
waveform of IC501

pin 1, 2

No

Trouble in H.V Sync

O.K

Check IC501 or their ambient circuit (pin 14, 15, 16)

Check IC501 or it's ambient circuit.

28

Image 30

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 RemovalPower IC, Transistor or Devices Removal/Replacement Diode Removal/ReplacementTECHNICAL INFORMATION GENERAL INFORMATION AbbreviationsPIN CONNECTOR CAUTIONS FOR ADJUSTMENT AND REPAIRCaution For Servicing OPERATION & ADJUSTMENT ADJUSTMENT KEYCONTRAST ADJUSTMENT PROCESSRECALL BRIGHTNESSOSDOn-Screen Display Menu ROTATION Choose different preset color temperatures or set your own customized Self Diagnosis TROUBLESHOOTING HINTS 1. No CharacterNo 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.Uof C104 13V DC? 13V DC?8.7V 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 REPLACEMENT PARTS LIST Important Safety NoticeAbbreviation of Description PART-NAME CIRCUIT BOARD ELECTRICAL PARTS LISTPART-CODE PART-DESCPART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAME PART-CODE PART-NAMEPART-DESC PART-CODE PART-NAMEPART-DESC PART-CODE PRINTED DATE NOV.1998 OVERSEAS SERVICE DEPTServ ce Manual DAEWOO ELECTRONICS CO