Acer AF705 AF705 Monitor Service Guide - Page 2
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Table of Contents 1. DISPLAY ALIGNMENT 3 A. TIMING & DISPLAY SIZE ...3 B. PICTURE POSITION ...3 C. LINEARITY ...3 D. ALIGNMENT PROCEDURE ...3 E. GEOMETRIC DISTORTION ...4 F. WHITE BALANCE ALIGNMENT...5 2. CONTROL AND CONNECT LAYOUT 7 A. MAIN PCB ...7 C. PIN ASSIGNMENT ...9 3. INTRODUCTION 10 A. POWER SUPPLY ...10 B. DEFLECTION: ...10 C. VIDEO: ...10 D. DIGITAL CONTROLLOR: ...10 4. POWER SUPPLY 12 A. RECTIFIER AND FILTER CKT: ...13 B. FLYBACK AND PWM CKT :...13 C. SNUBBER CKT:...13 D. SYNCHRONIZED CKT: ...13 E. POWER SAVING CKT: ...13 F. DEGAUSS CKT: ...14 G. OVERLOAD PROTECTION CKT: ...14 5. DEFLECTION 14 A. SYNC RPOCESSOR: ...15 B. HORIZONTAL PROCESSOR ...15 C. VERTICAL OUTPUT...15 D. HORIZONTAL OUTPUT STAGE...15 E. FLYBLACK TRANSFORMER ...15 6. VIDEO AMP. CIRCUIT 17 A. VIDEO PRE. AMP...18 B. VIDEO AMPLIFIER ...18 7. TROUBLESHOOTING 19 A. POWER SUPPLY CHECK ...20 B. MONITOR CHECK FLOW CHART ...21 APPENDIX A: PARTS LIST 23 APPENDIX B: P. C. B. ASSEMBLY 57 APPENDIX C: DISPLAY UNIT ASSEMBLY 75 APPENDIX D: CRT & YOKE ASSEMBLY 79 2