Acer AC 711, Service Manual

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1
1. DISPLAY ALIGNMENT .................................................................................. 2
A. TIMING & DISPLAY SIZE ................................................................................................................ 2
B. PICTURE POSITION ....................................................................................................................... 2
C. LINEARITY ..................................................................................................................................... 2
D. ALIGNMENT PROCEDURE ............................................................................................................. 2
E. GEOMETRIC DISTORTION............................................................................................................. 3
F. WHITE BALANCE ALIGNMENT ....................................................................................................... 4
2. CONTROL AND CONNECT LAYOUT .......................................................... 7
A. MAIN PCB ...................................................................................................................................... 8
C. PIN ASSIGNMENT.........................................................................................................................10
3. INTRODUCTION: ......................................................................................... 11
A. POWER SUPPLY ........................................................................................................................... 11
B. DEFLECTION: ............................................................................................................................... 11
C. VIDEO: .......................................................................................................................................... 11
D. DIGITAL CONTROLLOR: ............................................................................................................... 11
4. POWER SUPPLY .........................................................................................12
A. RECTIFIER AND FILTER CKT: ........................................................................................................15
B. FLYBACK AND PWM CKT : ............................................................................................................15
C. SNUBBER CKT: .............................................................................................................................15
D. SYNCHRONIZED CKT: ..................................................................................................................15
E. POWER SAVING CKT: ...................................................................................................................15
F. DEGAUSS CKT: .............................................................................................................................16
G. OVERLOAD PROTECTION CKT: ....................................................................................................16
5. DEFLECTION...............................................................................................14
A. SYNC RPOCESSOR: .....................................................................................................................17
B. HORIZONTAL PROCESSOR..........................................................................................................17
C. VERTICAL OUTPUT ......................................................................................................................17
D. HORIZONTAL OUTPUT STAGE .....................................................................................................17
E. FLYBLACK TRANSFORMER..........................................................................................................17
6. VIDEO AMP. CIRCUIT .................................................................................17
A. VIDEO PRE. AMP. ..........................................................................................................................20
B. VIDEO AMPLIFIER.........................................................................................................................20
7. TROUBLESHOOTING .................................................................................19
A. POWER SUPPLY CHECK ..............................................................................................................22
B. MONITOR CHECK FLOW CHART..................................................................................................23
APPENDIX A: PART LIST .............................................................................23
APPENDIX B: P. C. B. ASSEMBLY ..............................................................73
APPENDIX C: DISPLAY UNIT ASSEMBLY ...............................................108
APPENDIX D: CRT & YOKE ASSEMBLY ..................................................122