Daewoo 531X 6. Unstable Picture 6-1. Horizontal

6. Unstable Picture6-1. Horizontal

Is the

pulse of pin 26 of

the IC501

correct?

Trouble in IC501

or its ambient

circuit

Is the

pulse of pin 28 of

the IC201

correct?

Check IC501 and

its ambient circuit

Yes

Is the

input H.Sync

correct?

Check IC201 and

its ambient circuit

Yes

Trouble in Signal Cable

or 15P D-Sub Connector

5Vpp

Contents

Main Service Manual CONTENTS INFORMATION OF PAR T DESCRIPTION ELECTRICAL PARTS LIST SAFETY PRECAUTIONS Safety Check X-Ray Fire & Shock Hazard Implosion Protection GENERAL SAFETY INFORMATION SERVICING PRECAUTIONS General Servicing Precautions Electrostatically Sensitive (ES) Devices General Soldering Guidelines Page Power IC, Transistor or Devices Removal/Replacement Diode Removal/Replacement TECHNICAL INFORMATION Abbreviations GENERAL INFORMATION Caution For Servicing PIN CONNECTOR CAUTIONS FOR ADJUSTMENT AND REPAIR OPERATION AND ADJUSTMENT Page OSD Functions Page ALIGNMENT PROCEDURE Standard Adjustment Conditions Pre-Adjustment Method to launch the factory mode Main Adjustment Page TROUBLESHOOTING HINTS 1. No Character No Character 2. No Raster No Raster 3. A Missing Color One color is missing Yes 4. Abnormal OSD Font MODE B+ Voltage VGA 60Vdc Super VGA 72Vdc 54KHz 110Vdc 5. Horizontal Output Circuit 6. Unstable Picture 6-1. Horizontal Unstable picture 6-2. Vertical Unstable picture 50Vp-p 7. Focus 8. Convergence Poor convergence 9 MODE B+ Voltage VGA 60Vdc Super VGA 72Vdc 54KHz 110Vdc . Abnormal Picture 9-1. Horizontal Size * At first, adjust controls in the OSD Menu 9-2. Vertical Size 10. Side-Pincushion Circuit 11. Power Supply Unit (P.S.U) Trouble in P.S.U Page BLOCK DIAGRAM CMC-531X MONITOR BLOCK DIAGRAM Page Page Page Page Page Page Page Page INFORMATION OF PART DESCRIPTION Important Safety Notice Abbreviation of Description ELECTRICAL PARTS LIST