Acer AC 711 Manual de servicio

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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