NAD D 3020 Service Manual Download Page 2

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TABLE OF CONTENTS

DESCRIPTION

AGE

SERVICE CAUTION…………………………………………………………..3-4

SPECIFICATIONS…………………………………………………………...5

WIRING DIAGRAM……………………………………………………………....6

BLOCK DIAGRAM……………………………………………………. ….....7-10

……………………………………………………...12-21

PCB LAYOUT……………………………………………………………….22-29

ELECTRICAL PARTS LIST…………………………………………….30-50

EXPLODED VIEW

………………………………………………………51

-52

EXPLODED VIEW PARTS LIST

………………………………………

-52

CIRCUIT DIAGRAMS

TROUBLE SHOOTING GUIDE…………………..........................................11

Summary of Contents for D 3020

Page 1: ...NAD SERVICE MANUAL D3020 Hybrid Digital Amplifierr...

Page 2: ...ON PAGE SERVICE CAUTION 3 4 SPECIFICATIONS 5 WIRING DIAGRAM 6 BLOCK DIAGRAM 7 10 12 21 PCB LAYOUT 22 29 ELECTRICAL PARTS LIST 30 50 EXPLODED VIEWS 51 52 EXPLODED VIEW PARTS LISTS 51 52 CIRCUIT DIAGRAM...

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: ...Power at 8 ohms 2 x 30 Watts IHF Dynamic Power 8 ohms 2 x 65 Watts 4 ohms 2 x 105 Watts 2 ohms 2 x 150 Watts Signal Noise Ratio A weighted 90dB Channel Separation 1kHz 10kHz 75dB 65dB Channel Balance...

Page 6: ...6...

Page 7: ...SPI LDO AMS1117 3V3S LDO 7805 5VA 3V3D 3V3S 3V3D 3V3D 3V3D 3V3D L CH OP 2X35W 8ohm Gain 13 5dB Clipping control NE5532 LP RP HP OUT NE5532 HP OUT 12V Analog in RCA Bluetooth Module UART NAD design SPI...

Page 8: ...RCK CX_SDIN4 CX_SDIN3 CX_SDIN2 CX_SDIN1 VLS SAI_LRCK SAI_SCLK SAI_SDOUT DGND VD OMCK RMCK LPFLT TXP INT Rx Clock Data Recovery S PDIF Decoder DEM Serial Audio Interface Port C U Bit Data Buffer Contro...

Page 9: ...1 In A2 In A3 In A4 In B1 In B2 In B3 In B4 Bias TONE TONE Bch Tone Filter V GND VOut Ach Tone Filter V ADR0 ADR1 DAT A CLO CK H C T A L Control Logic Zero Cross Detection OutB OutA NJW1194 PREAMP BOA...

Page 10: ...K ROM 6016 Byte RAM USB Serial OSC PLL ACG Suspend Resume Logic I2C Bus C Port Port 3 Port 1 USB SOF 6 MHz Interface Engine CODEC Interface 1520 Byte SRAM UBM DMA Global Control Status Registers TAS10...

Page 11: ...SIGNAL OUTPUT YES YES NO CHECK UcD102 MODULE IS UcD102 MODULE INPUT S E Y O N NORMAL CHECK THE MUTE CONTROL IS THE MUTE SIGNAL OFF YES CHECH NJW1194 AND PREAMP IS NJW1194 OUTPUT NORMAL YES CHECK CS42...

Page 12: ...R367 4K7 R366 4K7 R427 1K AGND 1 2 3 4 5 J113 TO HP AGND 6 5 7 U310B NE5532 2 3 1 U310A NE5532 8 4 U310C NE5532 R380 3K32 R382 3K32 12V 12V C464 100N C465 100N R385 56k R377 56k R374 100R R386 100R A...

Page 13: ...RP26 PMA4 CN9 RG7 5 C2IND RP19 PMA3 CN10 RG8 6 MCLR 7 RP27 PMA2 C2INC CN11 RG9 8 VSS 9 VDD 10 PGEC3 AN5 C1INA Vbuson RP18 CN7 RB5 11 PGED3 AN4 C1INB USBOEN RP28 CN6 RB4 12 AN3 C2INA VPIO CN5 RB3 13 AN...

Page 14: ...504 22U 6V3 AGND R501 33R AGND AGND R522 4K7 USBS_RST AGND R509 NC AGND 3V3A1 USBS_RST USB SLAVE IO USBS IIS TO MCU AGND 3V3D USB_RDY USBS_RDY 1 2 3 4 6 5 J111 USB TYPE B R515 0R R516 0R USBID_P USBID...

Page 15: ...7VA AGND SUB IN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 J702 To output board J305 5VS 5VS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24...

Page 16: ...C373 100N AGND Clipping control 15VA 15VA C410 100nZ C425 100nZ C409 100nZ C426 100nZ 12V 12V AGND C408 100U 25V C422 100U 25V C421 100U 25V C407 100U 25V AGND 7VA 7VA AGND Clip IN U316 LM317M IN 2 A...

Page 17: ...26 AGND R605 100 J601 5 SUB OUT BOARD 6 POT BOARD 7 TRIGGER BOARD R931 10K R930 10K C916 100n C915 100n A 1 C 3 B 2 S900 ENCODE 1 2 3 4 5 6 J906 FFC6 fgnd C914 10u 10v 1 1 2 2 S100 BASS trig in 1 1 2...

Page 18: ...y1 6 U907 NC7WZ17 5VD 5VD 5VD 5VD R922 2K2 C910 100P GND R936 100R D911 AUX1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 J904 TO Preamp J100 LED_D1a LED_D2a LED_D3a GND GND C907 100N a1 1 gnd 2 a2 3 y2 4 vcc 5 y...

Page 19: ...914 RED R927 220 R928 220 R929 680 R926 330 5VS C913 10U 10V GNDB 1 2 3 4 5 6 J909 Header 3X2 1 2 3 4 5 6 J913 Header 3X2 1 2 3 4 5 6 J910 Header 3X2 1 2 3 4 5 6 J914 Header 3X2 1 2 3 4 5 6 J911 Heade...

Page 20: ...1A EE18 6 7 TR101C EE18 R121 4 7k R122 4 7k L103 Comment 65R7A L104 Comment 65R7A 1 2 3 AC INET 101 CON3 3 96 XM101 HOLE D105 SS36 60V 3A GNDP C123 200V 330UF C124 200V 330UF R107 220K R108 220K R109...

Page 21: ...6 4 4 U103 MOC3043 1206 1206 2 3 1 IC103 TL431 D121 BAT54J R148 390K R149 390K R153 1K 3 2 1 8 4 U101A LM393 5 6 7 U101B LM393 C117 100nF 50V R160 2 7K R126 4 7K R157 20K R141 100k C131 1nF 50V 12VD...

Page 22: ...C483 C460 C486 R458 CM06 CM04 3V3S PGDATA AGND C428 5VS XM300 PGCLK Standby 7VA C342 12V C492 IN1 VCL DM01 7VA VCL RM08 DM02 PSUF IN2 C493 C491 C420 C490 AGND HP DET R CH L CH AGND C405 C404 C429 NAD...

Page 23: ...R437 R414 R423 C431 C435 C455 R435 R436 C450 R416 C451 R422 C444 R426 R406 C423 C424 R373 C426 C385 C396 R376 C380 C425 L306 C434 R342 R343 C352 C365 C373 R321 U308 C369 R440 R351 D301 R449 R393 R415...

Page 24: ...R602 Q602 J603 C601 D601 R601 Q603 Q601 3 SUB OUT BOARD Top Layer Bottom Layer D3020 Pot Vm1 0 S900 CON301 J302 4 POT BOARD Bottom Layer D3020 HEADPHONE Vm1 0 Top Layer 5 HEADPHONE BOARD Top Layer Bo...

Page 25: ...J603 C497 J603 NAD D3020 Trigger Vm1 0 S100 J103 J101 S100 NAD D3020 Trigger Vm1 0 C495 C498 C495 C498 J103 J101 NAD D3020 Trigger Vm1 0 C495 C498 C495 C498 J103 J101 S100 J101 J103 S100 NAD D3020 Tri...

Page 26: ...ARD 5 NAD D3020 FPP BOARD Vm1 0 6 5 6 D912 D902 D927 D903 D928 D911 D922 D908 D919 D904 D929 D905 D930 D907 D918 D910 D921 D900 D925 U900 D924 D901 D926 D913 D923 D906 D931 D909 D920 Top Layer Bottom...

Page 27: ...A BOARD Top Layer Top Layer Bottom Layer Bottom Layer NAD D3020 KEY BOARD A Vm1 0 9 TOUCH B BOARD 5 6 5 6 J912 1 2 2 1 J909 1 2 D918 6 5 J911 1 2 D915 D917 D914 D916 J910 6 5 NAD D3020 KEY BOARD B Vm...

Page 28: ...16 C138 CY104 T102 GND1 35v 35v C111 L104 C110 STBGND2 5VD L102 J103 JM101 PIN12 PIN10 OUT Q118 Q121 Q120 Q119 C109 OUT C102 L106 L105 VM1 1 PCB D102 Q101 3 2 1 C 4 2 1 C GNDP Q108 VDP 12VD FG CY103 C...

Page 29: ...D3020 Power Supply Board HS40 D3020 PSU 2 VM1 0 PCB C125 C122 TH102 U103 11 PSU 2 BOARD Top Layer Bottom Layer 29...

Page 30: ...ors BC846S T1 T23 T27 T31 T34 31 00856 03 Transistors BC856BW SOT323 T1 T23 T27 T31 T34 or N31 00856 06 Transistors BC856BW 7 F T11 T16 T41 T44 31 00856 05 Transistors BC856AS 7 100mA 65V T11 T16 T41...

Page 31: ...8K 0603 1 10W 1 RC0603FR 076K8L R12 R25 R59 R72 07 97501 00 Chip Resistor 7 5K 0603 1 10W 1 RC0603FR 077K5L R11 R21 R26 R39 R58 R68 R73 R85 R97 R106 R115 R117 R147 R148 07 91002 00 Chip Resistor 10K...

Page 32: ...RESISTOR S 0 2 0 2 A 1 5 2 0 1 V L 0 1 T P 0 5 2 m t o P r e t e m o i t n e t o P 0 0 1 5 2 1 0 9 0 J 4 4 1 R 5 9 R MOSFET T5 T12 T25 T32 31 04019 00 N ch MOSFET IRFB4019PbF 9 3 1 D B s r o t s i s n...

Page 33: ...T P I T 6 0 1 B G 8 2 1 J F 4 2 C I P r e l l o r t n o c r o c i m 1 0 8 2 1 4 2 3 0 3 0 1 U B F P B 0 2 0 1 S A T r e l l o r t n o C g n i m a e r t S B S U 1 0 0 2 0 1 0 3 0 5 0 5 U 1 0 8 2 5 2 4...

Page 34: ...W 1 RC0603FR 07330RL R300 R303 R312 R317 R329 R338 R352 R358 07 94990 00 Chip Resistor 499 0603 1 10W 1 RC0603FR 07499RL r o t s i s e R p i h C 0 0 0 4 3 6 9 7 0 3 3 4 R 2 3 4 R 634 0603 1 10W 1 RC06...

Page 35: ...1ML r o t s i s e r p i h C 0 0 5 0 0 1 9 7 0 8 0 4 R 0 0 4 R 10M 0603 1 10W 1 RC0603FR 0710ML 3 3 k r o w t e N r o t s i s e R p i h C 0 1 0 3 3 0 9 7 0 3 2 5 R 6 0 5 R 5 R0603X4 R103 R104 R112 R113...

Page 36: ...1206 20 EMK316 BJ226ML T V 3 6 F u 7 4 r o t i c a p a C c i t y l o r t c e l E n a T p i h C 1 0 0 6 0 7 4 7 2 5 2 5 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 p i h C 0 2 1 1 0 0 1 6 0 0 4...

Page 37: ...1 4 5 0 0 2 3 3 2 D ICS B M H X D 4 6 C 4 2 T A S M O R P E E 1 1 4 6 4 2 0 3 0 3 U 2 E G W T V F 4 6 T 4 2 R B S M O R P E E 5 0 4 6 4 2 0 3 0 3 U B M H X D 4 6 C 4 2 T A S M O R P E E 4 0 4 6 4 2 0...

Page 38: ...1 M F K D M S r o t c e n n o C F R 4 1 1 0 0 5 0 7 1 1 J TRANSFORMERS L N 2 1 6 5 6 E P r e m r o f s n a r T 0 0 3 3 1 2 2 2 2 0 0 3 T CONNECTORS M 5 2 0 8 1 2 R L D e v i e c e R l a c i t p O 7 0...

Page 39: ...50 P t e k c o S r o t c e n n o C 0 0 2 3 2 1 2 3 1 2 0 7 J 1 27mm 2 16Pin CNT F127 2 16 GM 430 4 8 P TR PCB 5 OUTPUT BOARD CIRCUIT NO N O I T P I R C S E D O N T R A P PCB INFO A16 32304 24 Output B...

Page 40: ...3 0 1 6 2 0 8 3 C 0 0 1 5 3 2 2 6 2 2 7 4 C 22nK 50V 0603 X7R C365 C369 C373 C385 C409 C410 C416 C418 C425 C426 C438 C444 C450 C455 26 10451 10 Ceramic Chip Capacitor 100nK 50V 0603 X7R 3 0 6 0 V 5 Y...

Page 41: ...A A C R 1 4 5 1 0 0 1 0 7 1 0 1 3 J 1 M 3 2 R L D k c a J e n o h P m m 5 3 3 8 1 0 0 2 0 7 1 8 0 3 J J301 To Connector J601 13 22536 01 Connector 2 54mm 2 18Pin CNT F254 2 18 GS 850 3 0 N n i p 4 m...

Page 42: ...1 0 0 2 0 7 1 1 0 1 J SWITCHS 0 6 1 1 D L V 2 0 1 1 T I h c t i w S t c a T 3 1 1 0 1 4 0 1 1 0 0 1 S PCB 8 POT BOARD N O I T P I R C S E D O N T R A P O N T I U C R I C PCB INFO A16 32313 22 POT PCB...

Page 43: ...0mm TG130 113 5 126 2mm DIODES D900 D901 D902 D903 D904 D905 D906 D907 D908 D909 D910 D911 D912 D913 D918 D919 D920 D921 D922 D923 D924 D925 D926 D927 D928 D929 D930 D931 33 50603 91 white ChipLED WR...

Page 44: ...m 61 063512 0 Machine Screw MF3 12 85 320001 0 Nylon Spacer 3 5mm 86 108020 0 IR Receiver Foam EVA Black 6 5 7 5 2 5 PCB 12 Touch B BOARD N O I T P I R C S E D O N T R A P O N T I U C R I C PCB INFO A...

Page 45: ...1 D D106 D107 D108 D109 D110 D111 D112 D113 D114 D115 D116 D117 33 40321 00 Switch Diode BAS321 G 3 T 0 2 1 S R U M 0 2 1 S R U M D M S E D O I D 1 0 0 2 1 0 2 3 3 3 0 1 D G 3 T 0 2 2 A R U M r e i f...

Page 46: ...9 3 1 C 1 2nF 200V 5 NPO C1206N122J201T MA1206CG 122J 201ERG C113 C116 C129 C130 26 10362 12 Chip capacitor 10nK 630V X7R 1206 1206CC103KA Z1A 0 1 2 X C A V 5 7 2 F n 0 5 1 2 6 P K M p a C n o i s s...

Page 47: ...WIRES UL1569 22AWG L 165mm m m 0 8 L G W A 6 2 9 6 5 1 L U S E R I W N I P 3 1 0 3 0 3 2 3 4 1 3 0 1 J C A V 0 5 2 A 5 2 S E 0 9 1 F R t e l n I C A 0 2 3 0 1 7 0 7 1 A 1 0 1 T E N I C A A78 000040 1...

Page 48: ...J p 0 8 1 r o t i c a p a C p i h C c i m a r e C 0 0 1 5 1 8 1 6 2 3 3 1 C R 7 X 0 1 3 0 6 0 V 0 5 F p 0 2 2 r o t i c a p a C p i h C c i m a r e C 0 1 1 5 1 2 2 6 2 8 2 1 C C131 C132 C145 26 10251...

Page 49: ...01 0 S N Label 46 8mm 86 000167 0 Copper plate Label 46 8mm 94 359002 0 S N Label 53 12mm 86 000065 0 Copper plate Label 53 12mm 94 359004 0 Shipping Box S N Label 53 12mm 86 000065 0 Copperplate Labe...

Page 50: ...art paper 420X297mm 210X297mm BLACK ACCESSORIES m m 6 0 T 5 N C C E S e t a l p r a e r A 0 1 1 0 9 5 3 7 6 M m m 6 0 T 5 N C C E S e t a l p r a e r 0 1 0 0 9 5 3 0 8 m m 6 0 T 5 N C C E S e t a l p...

Page 51: ...9001 0B REAR PLATE 1 4 70 359001 0 INNER PLATE 1 5 70 359003 0 HEAT SINK E 1 6 66 359001 0 U TYPE BRAKCET 1 7 66 351002 0 VENT PLATE 2 8 75 351002 0 ROUND COVER 4 9 77 351002 1 BOTTOM COVER 1 10 J71 3...

Page 52: ...02 9 A07 70022 10 10 14 32303 01 11 01 32315 00 HEADPHONE BOARD 12 01 32309 00 PSU BOARD 13 01 32306 00 FPP BOARD 14 01 32313 00 POT BOARD 15 01 32307 00 TOUCH B BORAD 16 01 32308 00 TOUCH A BOARD 17...

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