SERVICE MANUAL - Nexo

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NXAMP4x4PARTS LIST■ CONTENTS OVERALL ASSEMBLY 1/2 ............................................22/2 ............................................4PA UNIT ...................................................................................7LCD ASSEMBLY .........................................................................9LOCATIONS OF HEAT SINK UNITS .......................................................... 10HEAT SINK UNIT L100 .................................. 11HEAT SINK UNIT L100 .................................. 12HEAT SINK UNIT L60 ..................................... 13HEAT SINK UNIT L60 ..................................... 14HEAT SINK UNIT L50 ..................................... 15HEAT SINK UNIT L50 ..................................... 16HEAT SINK UNIT OSH .................................. 17HEAT SINK UNIT MP-5 ................................. 18HEAT SINK UNIT MP-5 ................................. 19ELECTRICAL PARTS ...................................................................20Notes: DESTINATION ABBREVIATIONSCHN : Chinese modelJ : Japanese modelU: U.S.A. model■ WARNING Components having special characteristics are markedhaving specification equal to those originally installed.and must be replaced with parts● The numbers “QTY” show quantities for each unit.● The parts with “--” in “PART NO.” are not available as spare parts.● This mark “ } ” in the REMARKS column means these parts are interchangeable.● The second letter of the shaded ( ) part number is O, not zero.● The second letter of the shaded ( ) part number is I, not one.● ● ● ● ● ●
NXAMP4x4■ OVERALL ASSEMBLY 1/2 800575540800580580520530790550570555800820810510760765770810800CAUTIONThe figure below shows the screwmarked [555] head shape.To avoid the unit malfunction, make surethe screw marked [555] head shape issame as shown below beforeassembling the OPT angle.820810755560810820 810605600650810820680690720690660700640655590650Bottom section (See page 4) LCD Assembly 620(See page 9) 740690695710730635636780660610750635110630110a7402
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SERVICE MANUAL■ CONTENTS PANEL LA
Page 3 and 4:
NXAMP4x4■ PANEL LAYOUT • Front
Page 5 and 6:
NXAMP4x4■ SERVICE PRECAUTIONS Saf
Page 7 and 8:
NXAMP4x4■ OVERALL ASSEMBLY WIRING
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NXAMP4x43. Wiring of the FANConnect
Page 11 and 12:
NXAMP4x4d, e) Fix the wires to the
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NXAMP4x4CN401YELLOW Fig. 20 NOTE:
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NXAMP4x4b-3) Then fasten these wire
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NXAMP4x4At the stage as shown in Fi
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NXAMP4x4o) Fasten the wires (WK0208
Page 21 and 22:
NXAMP4x48. Color of the connectors
Page 23 and 24:
NXAMP4x412. Confirmation of Switch
Page 25 and 26:
NXAMP4x4■ DISASSEMBLY PROCEDURES
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NXAMP4x43. PSANHA Circuit Board(Tim
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NXAMP4x45. PSANHB Circuit Board(Tim
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NXAMP4x48. Upper left (CH1) PA unit
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NXAMP4x412. Front Panel Assembly(Ti
Page 35 and 36:
NXAMP4x416. Lower left DC Fan(Time
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■ LSI PIN DESCRIPTION NXAMP4x4
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NXAMP4x4CS4272-CZZR (X8487A0)CODECC
Page 41 and 42: NXAMP4x4NJU7630-M (X8682A0)Regulato
Page 43 and 44: NXAMP4x4SN74LVC157APWR (X6786A0)Dat
Page 45 and 46: NXAMP4x4• INANH Circuit Boardto C
Page 47 and 48: NXAMP4x4• CONTROL Circuit BoardAA
Page 49 and 50: NXAMP4x4• CONTROL Circuit BoardBP
Page 51 and 52: NXAMP4x4• OUTANH Circuit BoardPat
Page 53 and 54: NXAMP4x4• PN-AN Circuit BoardAEnc
Page 55 and 56: NXAMP4x4• PN-AN Circuit BoardBPat
Page 57 and 58: NXAMP4x4• PAANH Circuit BoardAA't
Page 59 and 60: NXAMP4x4• PSANHA, PSANHB Circuit
Page 61 and 62: NXAMP4x4• PSANHA, PSANHB Circuit
Page 63 and 64: NXAMP4x4• NX-DFLT Circuit BoardEx
Page 65 and 66: NXAMP4x43. Operation3-1. Entry of t
Page 67 and 68: NXAMP4x4Switch the GPI jig to the G
Page 69 and 70: NXAMP4x44-15. ANALOG testPress the
Page 71 and 72: NXAMP4x4■ 71
Page 73 and 74: NXAMP4x4 73
Page 75 and 76: NXAMP4x4 7
Page 77 and 78: NXAMP4x4
Page 79 and 80: NXAMP4x41-5. Other0 dBu is defined
Page 81 and 82: NXAMP4x44-7. Channel separation1) G
Page 83 and 84: NXAMP4x4■
Page 89 and 90: NXAMP4x45) Click the [Create] butto
Page 91: NXAMP4x4 91
Page 95 and 96: NXAMP4x4■ OVERALL ASSEMBLY 2/2 2
Page 97 and 98: NXAMP4x4REF NO. PART NO. DESCRIPTIO
Page 101 and 102: NXAMP4x4■ LOCATIONS OF HEAT SINK
Page 103 and 104: NXAMP4x4■ HEAT SINK UNIT L100 PS
Page 105 and 106: NXAMP4x4■ HEAT SINK UNIT L60 PSA
Page 107 and 108: NXAMP4x4■ HEAT SINK UNIT L50 PSA
Page 109 and 110: NXAMP4x4■ HEAT SINK UNIT MP-5 PA
Page 111 and 112: NXAMP4x4■ ELECTRICAL PARTS REF NO
Page 115 and 116: NXAMP4x4CONTROLREF NO. PART NO. DES
Page 123 and 124: NXAMP4x4PAANHREF NO. PART NO. DESCR
Page 131 and 132: NXAMP4x4CIRCUIT DIAGRAM■ CONTENTS
Page 133 and 134: KJIHGFEDCBANXAMP4x4■ WIRING DIAGR
Page 135 and 136: HGFEDCBANXAMP4x4■ BLOCK DIAGRAM 2
Page 137 and 138: HGFEDCBANXAMP4x4■ BLOCK DIAGRAM 4
Page 139 and 140: QPONMLKJIHGFEDCBANXAMP4x4■ CIRCUI
Page 141 and 142: QPONMLKJIHGFEDCBANXAMP4x4■ CIRCUI
Page 143 and 144:
QPONMLKJIHGFEDCBANXAMP4x4■ CIRCUI
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HGFEDCBANXAMP4x4■ CIRCUIT DIAGRAM
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Page 149 and 150:
LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
Page 151 and 152:
LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
Page 153:
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SERVICE MANUAL - Nexo

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