SERVICE MANUAL - Nexo

NXAMP4x4CIRCUIT DIAGRAM■ CONTENTS IC & DIODE FIGURES ..................................................................................................... 2WIRING DIAGRAM .................................................................................................. 3BLOCK DIAGRAM 1/5 ............................................. 42/5 ............................................. 53/5 ............................................. 64/5 ............................................. 75/5 ............................................. 8OVERALL CIRCUIT DIAGRAM CONTROL 1/6 ............................................................................................ 92/6 .......................................................................................... 103/6 ...........................................................................................114/6 .......................................................................................... 125/6 .......................................................................................... 136/6 .......................................................................................... 14INANH ....................................................................................................................................... 15OUTANH ................................................................................................................................... 16PN-AN ....................................................................................................................................... 17RS232-GPI ................................................................................................................................ 18OPT-AN, NX-DFLT .................................................................................................................... 19PAANH ...................................................................................................................................... 20PSANHA/PSANHB 1/3 .......................................................................................... 212/3 .......................................................................................... 223/3 .......................................................................................... 23Notation for Circuit Diagrams How to identify inter-sheet connectors Signal nameThis indicates the location of the counter inter-sheet connector.(The alphabet indicates horizontal direction and the number indicatesvertical direction)The 3-digit number indicates the destination page. ■ WARNING Components having special characteristics are markedhaving specification equal to those originally installed.and must be replaced with parts