SERVICE MANUAL - Nexo

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NXAMP4x4REF NO. PART NO. DESCRIPTION REMARKS QTY RANK-012 -- RESISTOR ARRAY (CHIP) 150x4 J (WG89190)SW001 -- TACT SWITCH SKRGAED010 VOL-A (WE95200) 01SW002 -- TACT SWITCH SKRGAED010 VOL-B (WE95200) 01SW003 -- PUSH SWITCH LS22BB-2UR/UR-T MUTE-CH1 (WK74000)SW004 -- PUSH SWITCH LS22BB-2UR/UR-T MUTE-CH2 (WK74000)SW005 -- PUSH SWITCH LS22BB-2UR/UR-T MUTE-CH3 (WK74000)SW006 -- PUSH SWITCH LS22BB-2UR/UR-T MUTE-CH4 (WK74000)SW007 -- TACT SWITCH SKRGAED010 SELECT-CH1 (WE95200) 01SW008 -- TACT SWITCH SKRGAED010 SELECT-CH2 (WE95200) 01SW009 -- TACT SWITCH SKRGAED010 SELECT-CH3 (WE95200) 01SW010 -- TACT SWITCH SKRGAED010 SELECT-CH4 (WE95200) 01* WR777200 CIRCUIT BOARD PAANH (I1209)(X8712G0)C401 -- MYLAR CAPACITOR 1500pF 50V J (UA65315) 01C401 -- MYLAR CAPACITOR 1500pF 50V J (UA35315)C402 -- ELECTROLYTIC CAP. 2.2uF 250V (WJ45880) 01C403 -- ELECTROLYTIC CAP. 2.2uF 250V (WJ45880) 01C404 -- CERAMIC CAPACITOR-B (CHIP) 1000pF 50V K (US06310) 01C405 -- ELECTROLYTIC CAP. 470uF 10V (UU22847) 01C406 -- CERAMIC CAPACITOR-CH (DISC) 22pF 500V C (WG21170)C407 -- MYLAR CAPACITOR 4700pF 50V J (UA35347) 01C407 -- MYLAR CAPACITOR 4700pF 50V J (UA65347) 01C408 -- CERAMIC CAPACITOR-B(CHIP) 0.1uF 50V K (WD96920) 01C409 -- MONOLITHIC CERAMIC CAP. 22pF 630V J (WJ59260) 01C410 -- ELECTROLYTIC CAP. 10uF 50V (UR86710) 01C411 -- MONOLITHIC CERAMIC CAP. 22pF 630V J (WJ59260) 01C412 -- ELECTROLYTIC CAP. 1.0uF 50V (UR86610) 01C413 -- ELECTROLYTIC CAP. 10uF 50V (UR86710) 01C414 -- ELECTROLYTIC CAP. 4.7uF 160V (UR80647) 01C415 -- ELECTROLYTIC CAP. 4.7uF 160V (UR80647) 01C416 -- MONOLITHIC MYLAR CAPACITOR 0.1uF 50V (VR16830) 01C417 -- MONOLITHIC MYLAR CAPACITOR 0.1uF 50V (VR16830) 01C418 -- MONOLITHIC CERAMIC CAP. 22pF 630V J (WJ59260) 01C419 -- MONOLITHIC CERAMIC CAP. 22pF 630V J (WJ59260) 01C420 -- MYLAR CAPACITOR 0.01uF 50V J (UA65410) 01C420 -- MYLAR CAPACITOR 0.01uF 50V J (UA35410) 01C421 -- MYLAR CAPACITOR 0.01uF 50V J (UA65410) 01C421 -- MYLAR CAPACITOR 0.01uF 50V J (UA35410) 01C422 -- ELECTROLYTIC CAP. 2.2uF 250V (WJ45880) 01C423 -- ELECTROLYTIC CAP. 2.2uF 250V (WJ45880) 01C424 -- MONOLITHIC CERAMIC CAP. 100pF 250V J (WJ59270) 01C425 -- MONOLITHIC CERAMIC CAP. 100pF 250V J (WJ59270) 01C426 -- POLYPROPYLENE CAPACITOR 3.3uF 250V J (WJ45970) 06C427 -- POLYPROPYLENE CAPACITOR 3.3uF 250V J (WJ45970) 06C428 -- CERAMIC CAPACITOR (CHIP) 2200pF 250V K (WH15840) 01C429 -- CERAMIC CAPACITOR (CHIP) 2200pF 250V K (WH15840) 01C430 -- ELECTROLYTIC CAP. 220uF 25V (WF20450) 01C431 -- ELECTROLYTIC CAP. 47uF 35V (UR85747) 01C432 -- ELECTROLYTIC CAP. 10uF 50V (UR86710) 01C433 -- ELECTROLYTIC CAP. 100uF 35V (UR85810) 01C434 -- MYLAR CAPACITOR 0.01uF 50V J (UA35410) 01C434 -- MYLAR CAPACITOR 0.01uF 50V J (UA65410) 01C435 -- CERAMIC CAPACITOR-B(CHIP) 0.1uF 50V K (WD96920) 01C436 -- MONOLITHIC CERAMIC CAP. 100pF 250V J (WJ59270) 01C437 -- MONOLITHIC CERAMIC CAP. 100pF 250V J (WJ59270) 01C438 -- ELECTROLYTIC CAP. 100uF 250V (WK58440) 05C439 -- ELECTROLYTIC CAP. 100uF 250V (WK58440) 05C440 -- ELECTROLYTIC CAP. 2.2uF 250V (WJ45880) 01C441 -- ELECTROLYTIC CAP. 2.2uF 250V (WJ45880) 01C442 -- CERAMIC CAPACITOR-B (CHIP) 0.01uF 50V K (US06410) 01C443 -- CERAMIC CAPACITOR-B (CHIP) 0.01uF 50V K (US06410) 01C444 -- CERAMIC CAPACITOR-B (CHIP) 1000pF 50V K (US06310) 01C445 -- CERAMIC CAPACITOR-B (CHIP) 1000pF 50V K (US06310) 01C446 -- CERAMIC CAPACITOR-SL(CHIP) 470pF 50V J (US06247) 01CN401 -- CONNECTOR, BASE POST PH 5P TE (VB39010) 01CN403 -- CONNECTOR, BASE POST PH 2P TE (VB38980) 01D401 -- DIODE 1SS355 TE-17 (VT33290) 01-403 -- DIODE 1SS355 TE-17 (VT33290) 01D404 -- ZENER DIODE UDZS3.9B 3.9V (VU17160) 01D405 -- DIODE (CHIP) HSU83 TRF -E (WD84430)✽ : New PartsOPT-AN, PN-AN, RS232-GPI and PAANHRANK: Japan only29
NXAMP4x4REF NO. PART NO. DESCRIPTION REMARKS QTY RANK-408 -- DIODE (CHIP) HSU83 TRF -E (WD84430)D409 -- DIODE 1SS355 TE-17 (VT33290) 01-411 -- DIODE 1SS355 TE-17 (VT33290) 01D412 -- ZENER DIODE UDZS3.9B 3.9V (VU17160) 01D413 -- ZENER DIODE UDZS6.8BTE-17 6.8V (VU17220) 01D414 -- ZENER DIODE UDZS6.8BTE-17 6.8V (VU17220) 01D415 -- ZENER DIODE UDZS3.9B 3.9V (VU17160) 01D416 -- DIODE D1FK60-5063 (WJ45930) 01D417 -- DIODE D1FK60-5063 (WJ45930) 01D418 -- DIODE (CHIP) HSU83 TRF -E (WD84430)-423 -- DIODE (CHIP) HSU83 TRF -E (WD84430)D424 -- DIODE 1SS355 TE-17 (VT33290) 01D425 -- DIODE 1SS355 TE-17 (VT33290) 01D426 -- DIODE (CHIP) D1F60 1A 600V (VS20110) 01-429 -- DIODE (CHIP) D1F60 1A 600V (VS20110) 01D430 -- ZENER DIODE UDZS15B 15V (VU17300) 01D431 -- DIODE 1SS355 TE-17 (VT33290) 01-434 -- DIODE 1SS355 TE-17 (VT33290) 01D435 -- ZENER DIODE UDZS15B 15V (VU17300) 01D436 -- ZENER DIODE UDZS15B 15V (VU17300) 01D437 -- ZENER DIODE UDZS5.6B 5.6V (VU17200) 01D438 -- DIODE AG01A WS (V862980) 01D439 -- ZENER DIODE UDZS6.8BTE-17 6.8V (VU17220) 01H401 -- HEAT SINK UNIT 10x20 (WK74640)H402 -- HEAT SINK UNIT 10x20 (WK74650)H403 -- HEAT SINK UNIT 10x20 (WK74650)H404 -- HEAT SINK UNIT 10x20 (WK74640)IC401 -- IC NJM431U(TE1) VARIABLE SHUNT REGULATOR 01(X6770A0)IC502 -- IC NJM1431AU(TE1) ADJ SHUNT REGULATOR (YA677A0) 03IC503 -- IC NJM1431AU(TE1) ADJ SHUNT REGULATOR (YA677A0) 03L401 -- CHOKE COIL 100uH 15A THP-065HZB (V893670)L402 -- CHOKE COIL 100uH 15A THP-065HZB (V893670)L403 -- COIL 1.7uH 10x21 (WD40880)L404 -- COIL 1.7uH 10x21 (WD40880)Q401 -- TRANSISTOR 2SA1371 D,E (VU41840) 01Q402 -- TRANSISTOR (CHIP) 2SC3324 GR,BL (V742170) 01Q404 -- TRANSISTOR 2SA1371 D,E (VU41840) 01Q405 -- TRANSISTOR 2SC3468 D,E (VU41860) 01Q406 -- TRANSISTOR 2SA1371 D,E (VU41840) 01Q407 -- TRANSISTOR (CHIP) 2SC3324 GR,BL (V742170) 01Q408 -- DIGITAL TRANSISTOR KRC102S-RTK/P (WC43500) 01Q409 -- TRANSISTOR 2SA1037AK Q,R,S (VV55650) 01Q412 -- TRANSISTOR (CHIP) 2SC3324 GR,BL (V742170) 01Q413 -- TRANSISTOR 2SC3468 D,E (VU41860) 01Q414 -- TRANSISTOR 2SC3468 D,E (VU41860) 01Q415 -- TRANSISTOR 2SA1371 D,E (VU41840) 01Q416 -- TRANSISTOR 2SA1371 D,E (VU41840) 01Q417 -- DIGITAL TRANSISTOR KRC102S-RTK/P (WC43500) 01Q418 -- TRANSISTOR 2SC5866TL Q,R TA (WJ46640) 01Q419 -- TRANSISTOR 2SA2094TL Q TA (WJ46630) 01Q422 -- TRANSISTOR 2SC3468 D,E (VU41860) 01Q423 -- TRANSISTOR 2SA1371 D,E (VU41840) 01Q424 -- TRANSISTOR (CHIP) 2SA1464 Y12,Y13,Y14 (WD83660) 01Q425 -- TRANSISTOR 2SA1371 D,E (VU41840) 01Q426 -- TRANSISTOR 2SC3468 D,E (VU41860) 01Q427 -- TRANSISTOR (CHIP) 2SC3739 B12,B13,B14 (WD83650) 02Q428 -- TRANSISTOR (CHIP) 2SC3739 B12,B13,B14 (WD83650) 02Q429 -- TRANSISTOR (CHIP) 2SA1464 Y12,Y13,Y14 (WD83660) 01Q430 -- TRANSISTOR (CHIP) 2SA1464 Y12,Y13,Y14 (WD83660) 01Q431 -- TRANSISTOR 2SC5866TL Q,R TA (WJ46640) 01Q432 -- TRANSISTOR 2SA2094TL Q TA (WJ46630) 01Q433 -- TRANSISTOR 2SC5866TL Q,R TA (WJ46640) 01Q434 -- TRANSISTOR 2SA2094TL Q TA (WJ46630) 01Q525 -- TRANSISTOR 2SC3468 D,E (VU41860) 01Q526 -- TRANSISTOR 2SA1037AK Q,R,S (VV55650) 01Q527 -- DIGITAL TRANSISTOR KRC102S-RTK/P (WC43500) 01Q528 -- TRANSISTOR 2SC3468 D,E (VU41860) 01R401 -- CARBON RESISTOR (CHIP) 12K 1/16W J (RD35712) 01R402 -- CARBON RESISTOR (CHIP) 12K 1/16W J (RD35712) 01✽ : New PartsPAANHRANK: Japan only30
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 and 26:
NXAMP4x4■ DISASSEMBLY PROCEDURES
Page 27 and 28:
NXAMP4x43. PSANHA Circuit Board(Tim
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 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 93 and 94: NXAMP4x4■ OVERALL ASSEMBLY 1/2 8
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 119: NXAMP4x4REF NO. PART NO. DESCRIPTIO
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 145 and 146: HGFEDCBANXAMP4x4■ CIRCUIT DIAGRAM
Page 149 and 150: LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
Page 151 and 152: LKJIHGFEDCBANXAMP4x4■ CIRCUIT DIA
Page 153: QPONMLKJIHGFEDCBANXAMP4x4■ CIRCUI
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