1
WARNING ............................................................................................................................2
1. ALGNMENT PROCEDURE .............................................................................................3
A. Conditions................................................................................................................................3
B. Functions Alignment................................................................................................................3
C. Preset Timing: ..........................................................................................................................6
2. OPERATION THEOREM ...............................................................................................12
A. Power Supply (1) ...................................................................................................................12
B. Deflection...............................................................................................................................12
C. Video ......................................................................................................................................12
D. Digital Controllable ...............................................................................................................12
E. Function Block Diagram ........................................................................................................13
F. Power Supply..........................................................................................................................14
G. Under Voltage Protection.......................................................................................................15
H. Degaussing CKT....................................................................................................................15
I. Deflection ................................................................................................................................16
J. Video AMP. Circuit.................................................................................................................18
J-2. Video AMPLIFIER..............................................................................................................18
K. Digit Control..........................................................................................................................20
3. CONTROL AND CONMECT LAYOUT ..........................................................................21
A.Main PCB ...............................................................................................................................21
B. CRT PCB ................................................................................................................................22
4. TROUBLE SHOOTING..................................................................................................23
A.Power Supply Check ..............................................................................................................23
B.Monitor Check Flow Chart .....................................................................................................24
APPENDIX A: PARTS LISTS .....................…………………………………………………...27
APPENDIX B: DISPLAY UNIT ASSEMBLY…………………………………………………...82
PPENDIX C: P.C.B. ASSEMBLY………………………………………………………………..96
APPENDIX D: CRT& YOKE ASSEMBLY…………………………………………………….106
Summary of Contents for AC501
Page 7: ...7 C 2 Mode 2 ...
Page 8: ...8 C 3 Mode 3 ...
Page 9: ...9 C 4 Mode 4 ...
Page 10: ...10 C 5 Mode 5 ...
Page 11: ...11 C 6 Mode 6 ...
Page 13: ...13 E Function Block Diagram ...
Page 19: ...19 1 Block Diagram ...
Page 21: ...21 3 CONTROL AND CONMECT LAYOUT A Main PCB ...
Page 22: ...22 B CRT PCB ...
Page 27: ...27 APPENDIX A PARTS LISTS ...
Page 28: ...28 A FRU BOM A 1 Main PCBA 456A1800008 A 2 Video PCBA 452A1800001 ...
Page 81: ...82 APPENDIX B DISPLAY UNIT ASSEMBLY ...
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Page 95: ...96 APPENDIX C P C B ASSEMBLY ...
Page 96: ...97 968 A9 BC 4D 9 42 96 E6 C38 F ...
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Page 105: ...106 APPENDIX D CRT YOKE ASSEMBLY ...
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