SERVICE MANUAL - Nexo

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SERVICE MANUAL■ CONTENTS PANEL LAYOUT ...........................................................3CIRCUIT BOARD LAYOUT ........................................4SERVICE PRECAUTIONS ............................................5OVERALL ASSEMBLY WIRING ..........................................7DISASSEMBLY PROCEDURES ...............................................25LSI PIN DESCRIPTION ...................................................37IC BLOCK DIAGRAM .......................................................38CIRCUIT BOARDS .............................................................44TEST PROGRAM .......................................................................................64 ........................................................................................71INSPECTIONS ...........................................................................................78 .............................................................................................................83UPDATING THE FIRMWARE .....................................................................88 ....................................................................90PARTS LISTBLOCK DIAGRAMIC & DIODE FIGURESCIRCUIT DIAGRAMPA 011947Copyright (c) NEXO S.A. All rights reserved. PDF ´09.10
Page 2 and 3: NXAMP4x4WARNING: This product conta
Page 4 and 5: NXAMP4x4■ CIRCUIT BOARD LAYOUT RS
Page 6 and 7: XXNXAMP4x4PSANH circuit diagram220
Page 8 and 9: NXAMP4x42. Wiring of the power swit
Page 10 and 11: NXAMP4x45. Wiring of the AC-INLETa)
Page 12 and 13: NXAMP4x46. Wiring of the PA unitCon
Page 14 and 15: NXAMP4x47. Wiring and fasteningConn
Page 16 and 17: NXAMP4x4e) Connect the wire (WK1421
Page 18 and 19: NXAMP4x4l) Connect the wire (WK1421
Page 20 and 21: NXAMP4x4q) Fasten the wires (WK1709
Page 22 and 23: NXAMP4x410. Insulation distance bet
Page 24 and 25: NXAMP4x413. Method of Fixing PN FFC
Page 26 and 27: NXAMP4x42. CONTROL Circuit Board, O
Page 28 and 29: NXAMP4x44. OUTANH Circuit Board(Tim
Page 30 and 31: NXAMP4x46. INANH Circuit Board(Time
Page 32 and 33: NXAMP4x410. Lower left (CH3) PA uni
Page 34 and 35: NXAMP4x414. Upper left DC Fan(Time
Page 36 and 37: NXAMP4x418. Power switch(Time requi
Page 38 and 39: NXAMP4x4■ IC BLOCK DIAGRAM 74HCT
Page 40 and 41: NXAMP4x4MX25L1605AM2C-12G (X8718A0)
Page 42 and 43: NXAMP4x4SN74ABT245BNSR (XU009A0)BUS
Page 44 and 45: NXAMP4x4■ CIRCUIT BOARDS CONTENTS
Page 46 and 47: NXAMP4x4• CONTROL Circuit BoardAt
Page 48 and 49: NXAMP4x4• CONTROL Circuit BoardBP
Page 50 and 51: NXAMP4x4• OUTANH Circuit Boardto
Page 52 and 53:
NXAMP4x4• PN-AN Circuit BoardA12
Page 54 and 55:
NXAMP4x4• PN-AN Circuit BoardBPat
Page 56 and 57:
NXAMP4x4• PAANH Circuit Boardto C
Page 58 and 59:
NXAMP4x4• PSANHA, PSANHB Circuit
Page 60 and 61:
NXAMP4x4• PSANHA, PSANHB Circuit
Page 62 and 63:
NXAMP4x4• RS232-GPI Circuit Board
Page 64 and 65:
NXAMP4x4■ TEST PROGRAM1. Required
Page 66 and 67:
NXAMP4x4Lighting order4-4. LCD test
Page 68 and 69:
NXAMP4x44-11. FLASH test4-13. SLOT
Page 70 and 71:
NXAMP4x470Input the 1 kHz, +10 dBu
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NXAMP4x4 01 SWITCH02 ENCODE
Page 74 and 75:
NXAMP4x4 74
Page 76 and 77:
NXAMP4x4
Page 78 and 79:
NXAMP4x4■ INSPECTIONS1. Measureme
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NXAMP4x44-1. Link outInput the 1 kH
Page 82 and 83:
NXAMP4x45. Inspection with BRIDGE m
Page 84 and 85:
NXAMP4x4
Page 86 and 87:
NXAMP4x4
Page 88 and 89:
NXAMP4x4■ UPDATING THE FIRMWARE1.
Page 90 and 91:
NXAMP4x4■
Page 92 and 93:
NXAMP4x4PARTS LIST■ CONTENTS OVER
Page 94 and 95:
NXAMP4x4REF NO. PART NO. DESCRIPTIO
Page 96 and 97:
Page 98 and 99:
NXAMP4x4■ PA UNIT 60901006050205
Page 100 and 101:
NXAMP4x4■ LCD ASSEMBLY 4020304020
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NXAMP4x4■ HEAT SINK UNIT L100 PS
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NXAMP4x4■ HEAT SINK UNIT L60 PSA
Page 106 and 107:
NXAMP4x4■ HEAT SINK UNIT L50 PSA
Page 108 and 109:
NXAMP4x4■ HEAT SINK UNIT OSH PSA
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NXAMP4x4■ HEAT SINK UNIT MP-5 PA
Page 112 and 113:
Page 114 and 115:
Page 116 and 117:
Page 118 and 119:
Page 120 and 121:
Page 122 and 123:
Page 124 and 125:
NXAMP4x4PAANH, PSANHA and PSANHBREF
Page 126 and 127:
Page 128 and 129:
Page 130 and 131:
NXAMP4x4PSANHA and PSANHBREF NO. PA
Page 132 and 133:
NXAMP4x4■ IC & DIODE FIGURES LD1
Page 134 and 135:
NXAMP4x4KJIHGFEDCBA■ BLOCK DIAGRA
Page 136 and 137:
NXAMP4x4KJIHGFEDCBA■ BLOCK DIAGRA
Page 138 and 139:
NXAMP4x4HGFEDCBA■ BLOCK DIAGRAM 5
Page 140 and 141:
QPONMLKJIHGFEDCBANXAMP4x4■ CIRCUI
Page 142 and 143:
NXAMP4x4QPONMLKJIHGFEDCBA■ CIRCUI
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Page 146 and 147:
QPONMLKJIHGFEDCBANXAMP4x4■ CIRCUI
Page 148 and 149:
NXAMP4x4LKJIHGFEDCBA■ CIRCUIT DIA
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Page 152 and 153:
LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
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SERVICE MANUAL - Nexo

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