NAD D 7050 Service Manual Download

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NAD

SER

VICE MANUAL

D i r e c t D i g i t a l

N e t w o r k A m p l i f i e r

Direct Digital

Network Amplifier

Summary of Contents for D 7050

Page 1: ...NAD SERVICE MANUAL D7050 Direct Digital Network Amplifier D7050 Direct Digital Network Amplifier...

Page 2: ...RIPTION P A G E SERVICE CAUTION 3 4 SPECIFICATIONS 5 WIRING DIAGRAM 6 9 PCB LAYOUT 26 32 EXPLODED VIEW PARTS LIST 11a b CIRCUIT DIAGRAMS TROUBLE SHOOTING GUIDE 10 EXPLODED VIEW 11a b 12 25 ELECTRICAL...

Page 3: ...ACITOR BETWEEN A KNOWN GOOD EARTH GROUND WATER PIPE CONDUIT ETC AND THE EXPOSED METALLIC PARTS ONE AT A TIME MEASURE THE AC VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND 15 MFD CAPACITOR REV...

Page 4: ...cluding Metal panels Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components common...

Page 5: ...to 24 192 via Digital Audio input up to 24 96 via Computer Type B USB input Unit dimensions W x H x D Gross 70 x 235 x 275 mm 2 x 9 x 10 inches Shipping weight 3 3 kg 7 3 lbs NAD SHALL NOT BE HELD LIA...

Page 6: ...IV E R 3 2 192K B ridge Module Board CX870 A ppleCeriticiateIC M FI341S2500 I2C HOS T _IR E Q WIFI Id evice E th ern et SP DIF SP DIF IIS 844K H z L DO 3V 3 L DO 1V 8 1V 8 3V 3 DC DC 5V 2A 5V 2A 5V S...

Page 7: ...nterface mix Digital input Serial interface mix Digital audio Digital audio Digital audio Digital input Serial interface mix DSP Programmable filtering delay Amplifier DSP volume PWM Digital audio PWM...

Page 8: ...tages and feedback controllers Output stages and feedback controllers Digital audio inputs Control I O GPIO BIST Supplies Master clock input Feedback control clocks Feedback control clocks 4 h C 3 h C...

Page 9: ...ut Digital feedback processor ZXCZA200 Analogue feedback processor Channel amplifier Channel DSP DDFATM chip set H bridge Filter Digital audio input Gate driver ZXCZM800 Digital modulator Bridge suppl...

Page 10: ...TOUCH BOARD OR SOFTWARE ER ROR YES NO CHECK THE 5V SUPPLY CIRCUIT NO NO IS ALL POWER SUPPLIES OK NO YES IS MOSFET BROKEN CHECK THE OVC VOV CIRCUIT NO IS IR NORMA L IS BLUETOOTH NORMAL IS AIR PLAY NORM...

Page 11: ...LATE 1 4 70 325001 4 INNER PLATE 1 5 70 325002 3 HEAT SINK A 1 6 75 325003 0 ANTENNA BRACKET 1 7 66 325004 0 VENT PLATE 2 8 75 325002 0 ROUND COVER 6 9 77 325002 1 BOTTOM COVER 1 10 J71 325002 0 KNOB_...

Page 12: ...5 29 04601 02 6 14 233006 00 7 14 23304 11 8 A07 70022 18 9 14 23310 00 10 01 23308 00 PSU BOARD 11 01 23307 00 HEAD PHONE BOARD 12 01 23302 00 FPP BOARD 13 01 23304 00 SOURCE BOARD 14 01 23303 00 VOL...

Page 13: ...167 C23P3V 3 168 CH2_FB1 169 CH2_FB0 170 CH2_REF2 171 CH2_REF1 172 C2GND 173 C2P3V 3 174 CH2_REF0 175 C2P1V 8 176 U3 ZXC ZM800 R 3V3 R 1V8 1V8 3V3 S 1V8 S 3V3 C 1V8 C 3V3 C 1V8 C 3V3 150R R 103 150R R...

Page 14: ...7 V cc 8 U 6 N C7N Z17K 8X IP1 1 O P3 2 IP2 3 G N D 4 O P2 5 IP3 6 O P1 7 V cc 8 U 7 N C7N Z17K 8X IP1 1 O P3 2 IP2 3 G N D 4 O P2 5 IP3 6 O P1 7 V cc 8 U 8 N C7N Z17K 8X G G D D S S Q 7 ZX M N 7A 11K...

Page 15: ...ro m C1V 8 fo rRefere nces A 8V 8V suppl y fo rderi vi ng anal ogue suppl i es N 8V 8 V suppl y fo rderi vi ng anal ogue suppl i es A 5V 5V A nal ogue suppl y N 5V 5 V A nal ogue suppl y R3V 3 3 3V l...

Page 16: ...4u7F C26 S2O_A 1M R23 GND 1k2 R5 3k3 R7 270pF C14 GND 1k2 R6 3k3 R8 270pF C15 GND 4u7F C5 4u7F C2 4u7F C3 4u7F C4 4u7F C1 N5V A5V GND 1uF C12 1uF C13 PW M CK C108_A C108_B FB 0_A FB 1_A FB 1_B FB 0_B...

Page 17: ...8 22U 6V3 C 10 5 6 100N C 10 5 5 100N C 10 5 4 100N U SBS_BCK U SBS_D A C 10 0 5 1N G N D C 10 16 1N C 10 0 2 22U 6 3V TR 1 G N D 2 O U T 3 V D D 4 U 1001 24 576M G N D C 10 15 22U 6 3V TR 1 G N D 2...

Page 18: ...1025 FB C1133 2 2U G N D PD ETa D 1018 PESD 3V 3 G N D 3V 3S PD ET 3 0 V _ O N 3 0 V _ O N A V 3CTRL0 A V 3CTRL1 BG _CS B R _L R C L K B R _SD B R _SC K A M PO V C A M PO V C D 10 2 1 4v7 G N D A 0 1...

Page 19: ...6 A D 3 1S S 3 5 2 R 8 7 8 2 0 R J Q 17 2 S C 3 3 2 6 A R 9 4 8 2 0 R J D 14 1S S 3 5 2 RA _REF0 RA _REF1 RA _REF2 3k32 R111 3k32 R119 53k6 R120 1nF C92 G N D 100uF C79 15R R135 1nF C95 G N D 47R R136...

Page 20: ...G D D S S Q 5 2N 7002 G G D D S S Q 3 2N 7002 G N D G N D G N D G N D A 5V A 5V N 5V PSU _F RailDetecti on resi stor V al ue T BD G N D DEBUG SOCKET C1490 10N R1130 10R D 1010 1SS352 G N D X M 1001 H...

Page 21: ...AUDIO A8 AU_REF C2 VDD_ANA_RADIO E9 PIO6 K1 LED1 E10 UART_RTS K7 VBAT B2 VDD_AUX A4 SPK_LP B5 VDD_AUDIO_DRV F9 UART_RX G9 UART_CTS H10 USB_P G10 PIO7 D10 PIO21 C9 PIO19 B6 SPK_RN G1 PIO13 H1 PCM_IN K2...

Page 22: ...00R R 5 2 0 A 100R C505 10N R529 10R D 502 1SS352 G N D X M 500 H O LE D 500 1SS352 C506 10N R530 10R D 503 1SS352 G N D X M 501 H O LE D 501 1SS352 V IN 6 CTRL 5 CO M P 2 G N D 3 FB 1 SW 4 U 501 TPS6...

Page 23: ...E 1 2 3 4 J 504 4PIN 7 8 egnd C5 1 3 10u 10v S O U R C E ENC O D E R R 5 2 8 10 K R 5 2 7 10 K C 5 11 10 0 n C 5 10 10 0 n A 1 C 3 B 2 S500 EN CO D E 1 2 3 4 J 502 4PIN 7 8 fg nd C509 1 0u 1 0 v V O...

Page 24: ...C 10 8 6 100n 5 1 4 2 3 J 10 0 9 A S T 3 2 3 B 0 4 C K K 3 5 0 2 3 P Q 10 0 3 D T C 114 232 gnd J 10 0 6 B J 10 0 6 A R 10 5 5 0 R J C 10 7 2 2 2 0 pF R 10 6 1 0 R J C 10 8 2 2 2 0 pF C 10 7 3 N I C 1...

Page 25: ...Q411 2SC3326 R503 4K7 R502 4K7 Q413 2SC3326 R504 4K7 1 2 3 4 5 6 CO N 1002 Touch c on TO U CH _PA D 5 1 4 2 3 6 7 J 1 C K X 3 5 0 2 K 1 2 3 4 5 6 7 8 H eader8 w hi t e red amb er R D 401 W D 402 O D 4...

Page 26: ...22R C 219 150P 200V V V Q 202 FQ PF630 Q 207 BC807 25 D 205 BA S321 R 225 22R D 211 BA S321 Q 206 FQ PF630 Q 212 BC807 25 D 213 BA S321 R 231 22R D 215 BA S321 C 222 150P 200V R 252 22R C 220 150P 200...

Page 27: ...Top Layer 1 AMP BOARD VM1 2 PCB LAYOUT 26...

Page 28: ...1 AMP BOARD VM1 2 Bottom Layer 27...

Page 29: ...Top Layer Bottom Layer 2 BLUETOOTH BOARD VM1 2 3 TOUCH BOARD VM1 2 Top Layer Bottom Layer 28...

Page 30: ...4 FPP BOARD VM1 2 5 VOLUME ENCODE BOARD VM1 2 Top Layer Bottom layer Top Layer Bottom Layer 29...

Page 31: ...6 SOURCE ENCODE BOARD VM1 2 Top Layer Bottom Layer 7 HEADPHONE BOARD VM1 2 Top Layer Bottom Layer 30...

Page 32: ...8 INT BOARD VM1 2 Top Layer Bottom Layer 31...

Page 33: ...9 PSU BOARD VM1 2 Top Layer Bottom Layer 32...

Page 34: ...Digital transistor DTC114EKA A K E 4 1 1 A T D r o t s i s n a r t l a t i g i D 1 0 4 1 1 0 0 1 3 2 2 0 1 Q 1 0 0 1 Q 3 2 T O S 5 1 0 1 A r o t s i s n a r t l 3 0 5 1 0 1 0 1 3 4 1 0 1 Q 3 1 0 1 Q 0...

Page 35: ...R 4 4 R 1 10W 1 R48 R64 R66 R99 R137 R1083 R1118 R1119 R1121 R1015 R1090 R1091 R1158 R141 R145 R149 R150 R151 R147 R148 R118 R1031 R152 R1125 R1126 07 91000 00 Chip Resistor 100 1 10W 1 0 0 1 r o t s...

Page 36: ...R p i h C 1 0 0 0 0 1 9 7 0 1 9 R 0805 1 8W 1 0 2 8 r o t s i s e R p i h C 1 0 0 0 2 8 9 7 0 4 9 R 9 8 R 7 8 R 0805 1 8W 1 r o t s i s e R p i h C 1 0 1 0 5 1 9 7 0 3 3 0 1 R 1 5K 0805 1 8W 1 RC0805...

Page 37: ...C41_Ch1 C48 C49 C52 C83 C84 C85 C86 C87 C88 C89 C90 C91 C93 C94 C98 C99 C101 C102 C103 C104 C105 C106 C107 C108 C109 C111 C112 C113 C118 C121 C139 C147 C156 C903_Ch0 C903_Ch1 C922_Ch0 C922_Ch1 C1045...

Page 38: ...9 0 6 4 0 8 0 1 2 0 1 L 4 1 0 1 L 9 0 0 1 L 2 0 0 1 L 1 0 0 1 L L1020 L1022 L1025 08 04102 16 BEAD 1000 25 100MHz 0603 742792664 L1016 L1017 L1023 08 04100 06 Inductor SMD 10uH 2A GPSR0520 100M 5 2 4...

Page 39: ...r o t i c a p a C p i h C c i m a r e C 0 2 1 1 5 2 2 6 2 2 C C3 C6 C7 C8 C16 C21 C20 26 47560 08 Ceramic Chip Capacitor 4 7uM 6 3V 0402 X5R C13 C17 C18 26 10351 08 Ceramic Chip Capacitor 10nF 50V 04...

Page 40: ...2001 0 Plastic Spacer Screw Nylon66 H 11 TP 11 3 M 6 6 n o l y N T U N c i t s a l P 0 2 0 3 0 1 1 2 6 61 023506 0 Machine Screw MB3 6 zinc black 61 373506 0 Machine Screw M3 6 61 023510 0 Machine Scr...

Page 41: ...5 0 8 0 R 5 X 0 1 V 3 6 U 2 2 r o t i c a p a C p i h C c i m a r e C 1 1 0 6 6 2 2 6 2 6 2 5 C 0 2 5 C R 7 X V 6 1 0 1 F u 1 r o t i c a p a C p i h C c i m a r e C 0 2 1 1 5 0 1 6 2 2 2 5 C R 5 X 3...

Page 42: ...0 1 C 0 1 R 7 X 3 0 6 0 V 6 1 F n 0 0 1 r o t i c a p a C p i h C c i m a r e C 0 0 1 1 4 0 1 6 2 6 8 0 1 C 5 8 0 1 C CONNECTORS 3 1 0 A 6 Y 9 0 0 0 1 F B P 6 9 0 1 D M S r o t c e n n o C C P F 5 0...

Page 43: ...0 0 6 8 0 2 3 3 1 2 2 D TRANSISTORS Q207 Q208 Q209 Q210 Q211 Q212 A m 0 0 5 V 5 4 5 2 7 0 8 C B r o t s i s n a r t 0 0 5 2 7 0 8 1 3 A m 0 0 1 V 5 6 W B 6 4 8 C B s r o t s i s n a r T 2 0 6 4 8 0 0...

Page 44: ...805 1 8W 5 RC0805JR 07330KL r o t s i s e R p i h C 1 0 4 3 4 0 9 7 0 7 1 2 R 430K 0805 1 8W 5 RC0805JR 07430KL r o t s i s e R p i h C 1 0 3 0 1 5 9 7 0 6 1 2 R 1 1 2 R 510K 0805 1 8W 1 RC0805FR 0751...

Page 45: ...2 9 0 2 C 0 2 V 0 5 F u 0 1 X 3 6 2 D C r o t i c a p a C c i t y l o r t c e l E u l A 2 0 1 5 0 0 1 6 0 1 1 2 C 5 2 F 0 2 V 5 3 F u 7 4 3 6 2 D C r o t i c a p a C c i t y l o r t c e l E u l A 0 0...

Page 46: ...i s t a e h 1 4 0 0 5 2 3 0 7 0 5 0 1 L A D _ k n i s t a e h 0 5 0 0 5 2 3 0 7 0 1 T 5 N C C E S r e v o c d l e i h s 2 2 0 0 5 2 3 6 6 90 325005 0 Non woven Cloth 7 50mm m m 4 0 6 1 6 8 1 7 1 K G...

Page 47: ...egg_tray 90 325001 2 non clothes bag 430 320 88 325005 0B sleeve box 88 325006 0A accesory box m m 0 0 3 0 5 3 A d r a o b p a l c 0 7 0 0 5 2 3 8 8 m m 1 3 3 9 0 5 B d r a o b p a l c 1 8 0 0 5 2 3 8...

Page 48: ...5mm2 3C Black L 1800mm or JA15 16250 00 AC Cord 3PINS 16A 250V LF L 6 7 LP 34 H05VV F 3C LS 60 Outside the carton 2 94 325014 0 Version Label 115 85mm R 1mm m m 5 2 6 4 l e b a L n o i s r e V 1 6 0 0...

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