GAI-Tronics L3149B C200 Advanced Deskset - Manual (Page 6)

Table of Contents L3149B (C200) Advanced Tone Remote Desk Set
02/12 Pub. 43004-023D vi
A LIAS T ABLE ............................................................................................................................................................ 66
TROUBLESHOOTING ............................................................................................................................................ 69
T ROUBLESHOOTING THE L3149B (C200) A DVANCED D ESK S ET ............................................................................. 69
F USE R EPLACEMENT ................................................................................................................................................ 70
SCHEMATICS .......................................................................................................................................................... 71
D ESK S ET L INE I NTERFACE S CHEMATIC D IAGRAM - S HEET 1 .................................................................................. 72
D ESK S ET U SER A UDIO I/O S CHEMATIC D IAGRAM - S HEET 2 .................................................................................. 73
D ESK S ET C ONTROL M ICROPROCESSOR I/O S CHEMATIC D IAGRAM - S HEET 3 ......................................................... 74
D ESK S ET DSP B LOCK S CHEMATIC D IAGRAM - S HEET 4 ......................................................................................... 75
D ESK S ET T ONE K EYPANEL S CHEMATIC D IAGRAM - S HEET 5 ................................................................................. 76
D ESK S ET P OWER S UPPLY S CHEMATIC D IAGRAM - S HEET 6 .................................................................................... 77
D ESK S ET S IGNALING S ECTION S CHEMATIC D IAGRAM - S HEET 7 ............................................................................. 78
R ELAY I/O O PTION S CHEMATIC D IAGRAM (XRC0001A) ......................................................................................... 79
CIRCUIT BOARDS .................................................................................................................................................. 81
M AIN U NIT DTD C IRCUIT B OARD ............................................................................................................................ 82
M AIN U NIT P OWER AND L INE C IRCUIT B OARD ........................................................................................................ 83
R ELAY I/O O PTION C IRCUIT B OARD ......................................................................................................................... 84
DEFINITIONS AND ACRONYMS ......................................................................................................................... 85