SERVICE MANUAL - Nexo

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NXAMP4x42. CONTROL Circuit Board, OPT angle and OPT-AN Circuit Board(Time required: about 10 minutes)2-1. Remove the top cover and the NX-DFLT card.(See procedure 1.)2-2. Disconnect the connector assemblies from theCONTROL circuit board. (Fig. 2)2-3. Remove the four (4) screws marked [580]. TheCONTROL circuit board can then be removed. (Fig. 2)2-4. Remove the two (2) screws marked [550], one (1)screw marked [555] and the two (2) screws marked[560]. The OPT angle can then be removed togetherwith the OPT-AN circuit board. (Fig. 2)2-5. Remove the two (2) screws marked [530]. The OPT-AN circuit board and the OPT angle can then beseparated. (Fig. 2) CAUTIONThe 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.OPT-AN[530][560]OPT angle OPT angle OPT-AN[580][555]CONTROL[550] [580] [550][530]: BIND HEAD TAPPING SCREW-S 3x6 MFZN2W3 (--) [550]: BIND HEAD TAPPING SCREW-S 3x6 MFZN2W3 (--) [555]: BIND HEAD TAPPING SCREW-S 3x6 MFZN2B3 (--) [560]: BIND HEAD TAPPING SCREW-S 3x6 MFZN2B3 (--) [580]: BIND HEAD TAPPING SCREW-S 3x6 MFZN2W3 (--) Fig. 2 26
NXAMP4x43. PSANHA Circuit Board(Time required: about 15 minutes)3-1. Remove the top cover and the NX-DFLT card.(See procedure 1.)3-2. Remove the CONTROL circuit board and the OPTangle. (See procedure 2.)3-3. Remove the two (2) screws marked [150A], and removethe upper ACPS connector assembly. (Fig. 3)3-4. Disconnect the connector assemblies from thePSANHA circuit board. (Fig. 3)3-5. Remove the nine (9) screws marked [450] and theone (1) hexagonal spacer marked [440]. The PSANHAcircuit board can then be removed. (Fig. 3) Upper ACPS connector assembly [150A][450][450][440][450]PSANHA[450][150A]: FLAT HEAD TAPPING SCREW-B 3x8 MFZN2B3 (--) [440]: HEXAGONAL SPACER H=50 B=5.5 (--) [450]: BIND HEAD TAPPING SCREW-S 3x6 MFZN2W3 (--) Fig. 3 27
Page 1 and 2: 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
Page 9 and 10: NXAMP4x43. Wiring of the FANConnect
Page 11 and 12: NXAMP4x4d, e) Fix the wires to the
Page 13 and 14: NXAMP4x4CN401YELLOW Fig. 20 NOTE:
Page 15 and 16: NXAMP4x4b-3) Then fasten these wire
Page 17 and 18: NXAMP4x4At the stage as shown in Fi
Page 19 and 20: NXAMP4x4o) Fasten the wires (WK0208
Page 21 and 22: NXAMP4x48. Color of the connectors
Page 23 and 24: NXAMP4x412. Confirmation of Switch
Page 25: NXAMP4x4■ DISASSEMBLY PROCEDURES
Page 29 and 30: NXAMP4x45. PSANHB Circuit Board(Tim
Page 31 and 32: NXAMP4x48. Upper left (CH1) PA unit
Page 33 and 34: NXAMP4x412. Front Panel Assembly(Ti
Page 35 and 36: NXAMP4x416. Lower left DC Fan(Time
Page 37 and 38: ■ LSI PIN DESCRIPTION NXAMP4x4
Page 39 and 40: 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
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NXAMP4x4
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NXAMP4x41-5. Other0 dBu is defined
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NXAMP4x44-7. Channel separation1) G
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NXAMP4x4■
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NXAMP4x4
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NXAMP4x4
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NXAMP4x45) Click the [Create] butto
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NXAMP4x4 91
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NXAMP4x4■ OVERALL ASSEMBLY 1/2 8
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NXAMP4x4■ OVERALL ASSEMBLY 2/2 2
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NXAMP4x4REF NO. PART NO. DESCRIPTIO
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NXAMP4x4■ LOCATIONS OF HEAT SINK
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NXAMP4x4■ HEAT SINK UNIT L100 PS
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NXAMP4x4■ HEAT SINK UNIT L60 PSA
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NXAMP4x4■ HEAT SINK UNIT L50 PSA
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NXAMP4x4■ HEAT SINK UNIT MP-5 PA
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NXAMP4x4■ ELECTRICAL PARTS REF NO
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NXAMP4x4CONTROLREF NO. PART NO. DES
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Page 121 and 122:
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NXAMP4x4PAANHREF NO. PART NO. DESCR
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Page 127 and 128:
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Page 131 and 132:
NXAMP4x4CIRCUIT DIAGRAM■ CONTENTS
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KJIHGFEDCBANXAMP4x4■ WIRING DIAGR
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HGFEDCBANXAMP4x4■ BLOCK DIAGRAM 2
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HGFEDCBANXAMP4x4■ BLOCK DIAGRAM 4
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QPONMLKJIHGFEDCBANXAMP4x4■ CIRCUI
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HGFEDCBANXAMP4x4■ CIRCUIT DIAGRAM
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LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
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LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
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SERVICE MANUAL - Nexo

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