20
K. Digit Control
Digit control circuit includes micro processor U2(UMC6861), EEPROM IC(24LC04). With t he program, u-P control
all the functions of the monitor. User can control t he functions and all the functions shows on the OSD. The u-P will
mute the video signal whenever the mode changes. There will be difference SW1/SW2 in difference horizontal
frequency, Table 5.1 is the switching table:
Hf < 40 KHz
Hf < 58.5 KHz
Hf > 58.5 KHz
SW1
L L H
SW2
L H H
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 ...
Page 82: ...83 ...
Page 83: ...84 ...
Page 84: ...85 ...
Page 85: ...86 0 111 23 45 67489 ...
Page 86: ...87 ...
Page 87: ...88 0 0 23 45 67489 ...
Page 88: ...89 23 45 67489 ...
Page 89: ...90 ...
Page 90: ...91 ...
Page 91: ...92 1 1 11 1 1 1 1 1 11 ...
Page 92: ...93 1 1 1 1 11 1 1 11 23 45 67489 ...
Page 93: ...94 ...
Page 94: ...95 23 45 67489 ...
Page 95: ...96 APPENDIX C P C B ASSEMBLY ...
Page 96: ...97 968 A9 BC 4D 9 42 96 E6 C38 F ...
Page 97: ...98 23 45 67489 ...
Page 98: ...99 ...
Page 99: ...100 111 G 1 0 111 ...
Page 100: ...101 1 1 1 1 1 1 1 1 1 G 1 1 G G G G G G G G G G G G G G G G ...
Page 101: ...102 G G G G G G G G G G H G H G 23 45 67489 ...
Page 102: ...103 ...
Page 103: ...104 ...
Page 104: ...105 ...
Page 105: ...106 APPENDIX D CRT YOKE ASSEMBLY ...
Page 106: ...107 ...
Page 107: ...108 0 0 11 0 11 23 45 67489 ...
