NAD M3 C/AH Service Manual Download Page 33

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PRINTED CIRCUIT DIAGRAMS

1. Preamp Main board(PREM)

oplayer

Bottomlayer

3-19

R20

C20

C237

Q231 1R551R56 Q230

C235

RRCA7

2C49

R289

RRCA8

2C60

RRCA6

RRCA10

RRCA1 RRCA2

C220

RRCA3

1Q17

1Q18

Q103

RL211

2D11

2C21

2R21

2D04

2C07

2R07

U209

1D21

R201

C201

RL201

R204

C221

R203

RL202

C2
0

RL203

R206

C222

R205

2D01

2C01

2R01

2Q01

2C02

2R02

2Q02

2D02

2C03

2R03

2D03

2C04

2C05

2R05

2R04

U201

2Q03

2C06

2R06

R277

C2
3

2R84

C231

1D20

J203

2R95

C230

R27

2R94

R27

2R105

J210

1Q2

RL204

C223

R208

RL205

R207

C20

RL206

R210

C224

R21

R209

U208

C225

R22

2C51

R211

1D19

R1
1

1R69

U213

RL207

RL212

R1
3

1R70

R133

2D07

2C13

2R13

2Q07

R132

2C14

R131

2D16

2R14

R130

1C23

2Q12

1R23

2C23

2R23

R116

R117

1C24

U105

1C25

2Q04

2C08

J204

2R08

R232

2R87

R282

2D05

2C09

2R09

R231

2C24

R212

2R89

C207

2R88

R284

2C10
2Q05

2R10

R230

2D06

2C11

R216

2Q06

2C12

R217

1R71

R218

U205

2R
78

2Q17

2Q13

2R
81

2R79

2R82

RIG

NAD

ELEC

OIN

U212

1R10

1Q13 1R

1R81

2R86

Q203

2R80

2C27

2D12

C242

R233

R236

R237

R234

R235

R238

2R83

2C28

R241

R242

R239

R240

R243

R244

R220

R221

R222

R223

R224

R225

R226

R227

R228

R229

2R75

2C26

R135

R136

R118

R137

R119

R138

R139

R141

R144

R140

R142

R143

1C54

1C26

J201

1R
76

1R
77

1R75

R120

R121

R128

R122

R123

R124

R125

R126

R127

R129

C1
4

1R83

1C28

1D12

1Q14

1Q28

1R101

2C48

1C4

2Q18

2Q14

U21

R2
1

R270

2C42

R285

2D17

J207

R279

2D
18

R281

R296

R299

2R97

U203

1R50

R298

2C45

2R9

2C55

2R93

C218

C226

C229

2Q22

2R44

R283

R276

Q201

2D13

C22

C21

U202

2C34

2R85

R24

R23

C214

R275

2Q21

R278

Q202 R26

2R90

2D14

2R43

VR2

2C33

R29

R27

C236

C239

R28

2R91

R25

2Q
1

2C37
2C36

2R45

2C35

2C39

2C40

2R42

2C38

J106

2C47

1R47

2C
4

2Q
1

R17

1R86

2D15

2C53

1R59

R18

R17

1R60

1R94

1R105

R17

RL208

U101

2Q08

2C16

2R16

R295

1R63

C232

R293

C233

U206

C215 C216

RL210

C217

1R68

R29

RL209

R290

1R64

U211

J108

PCB1

2Q24

2Q23

1R108

J209

J103

2D21

1R95

U1
0

J104

2Q11

2C22

2R22

R182

1R87

2D10

2C19

R177

2R19

R112

1R89

R184

C13

1R
84

2Q10

2C20

2R20

2D09

2C17

2R17

2C18

2Q09

2R18

2D08

2C15

2R15

HS4-

-B008

PREM

_0.

R17

R10

1Q16

2R40

1Q22

1R85

R14

R13

1C34

C1
2

VR1

1R80

1C27

C136

C139

R1
8

R1
7

R1
1

R1
9

1C33

1R91

1Q15

R11

R15

1R90

R178

R16

1D14

C119
U102

1R93 1C

92 C1

2R39

1Q21

R175

C114

Q102

1D13

R183

Q101

R176

1C44 1R97

C126

C129

U103

R11

R14

1C45

R197

R185

1R49
R198

R179

R181

1C
42

1D
18

1C
4

1D
17

J107

R196

R199

R18

1C46

1R48

1C47

J206

1R
79

1R
78

2R38

1C38

1C40

1C39

2R41

1C35

1C36

1C37

J101

All manuals and user guides at all-guides.com

Summary of Contents for M3 C/AH

Page 1: ...M3 C AH MODE L M3 SE R VICE MANUAL NAD 2006 NAD ELECTRONICS INTERNATIONAL TORONTO M3 C AH Integrated Amplifier M3 C AH Integrated Amplifier Integrated Amplifier All manuals and user guides at all guid...

Page 2: ...CONTENTS SECTION 1 SUMMARY SECTION 2 CABINET MAIN CHASSIS SECTION 3 ELECTRICAL SECTION 4 REPLACEMENT PARTS LIST All manuals and user guides at all guides com...

Page 3: ...S 1 2 SERVICING PRECAUTIONS 1 3 General Servicing Precautions Insulation Checking Prodedure Electrostatically Sensitive Devices SPECIFICATIONS 1 6 7 1 1 ALIGNMENT PROCEDURE 1 4 5 POWER DRIVEN VOLTAGE...

Page 4: ...DAMAGED INSULATION INCLUDING A C CORD AND REPLACE IF NECES 5 NO LEAD OR COMPONENT SHOULD TOUCH A RECIVING TUBE OR A RESISTOR RATED AT 1 WATT OR MORE LEAD TENSION AROUND PROTRUNING METAL SURFACES MUST...

Page 5: ...nels Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called El...

Page 6: ...RENT AMP BOARD 1 Connect a DC Millivoltmeter betweenTP301 2 pins then adjust VR301 200ohms for 7 8mV reading on meter 2 Connect a DC Millivoltmeter between TP401 2 pins then adjust VR401 200ohms for 7...

Page 7: ...nput Connect a AC Millivoltmeter to preout1L then adjust R565 for lowest output level 2 Volum set 0dB Input 2V 10KHZ common mode sinwave signal at R channel Balance input Connect a AC Millivoltmeter t...

Page 8: ...l 4ohms 480W 2ohms 785W Damping factor 150 Signal to noise ratio refer 1W A weighted 100dB Slew rate 20V sec T H D and SMPTE I M 0 01 Distortion from 250mW to rated output IHF I M CCIF IM and T I M di...

Page 9: ...dance Zone2 output impedance Controls Treble 5dB at 10kHz Bass 5dB at 100Hz Pre in Power AMP out input 2V Signal to Noise ratio A weighted 107dB ref 1 W out 500mV CD in SPK out 8 A weighted Rated dist...

Page 10: ...ECTION 2 CABINET MAIN CHASSIS CONTENTS EXPLODED VIEWS 2 2 1 Cabinet and main frame section 2 2 2 Packing accessory section 2 3 3 Exploded view parts list 2 4 5 All manuals and user guides at all guide...

Page 11: ...020 A001 A002 C022 C026 C009 C025 C008 PR01 PR02 PR03 PR04 PR06 T001 C027 PR05 C023 C024 C028 R009 A003 A004 A005 A006 S001 S001 S001 S002 S019 S002 S003 S004 S019 S005 S007 S006 S009 S008 S010 S004 S...

Page 12: ...P006 P005 P001 P002 P003 P004 P008 P007 P011 P009 P013 P016 P015 P014 P012 P010 2 Packing accessory section 2 3 All manuals and user guides at all guides com...

Page 13: ...4 y s s A t o o F 0 0 1 0 8 4 0 3 8 A06 66 018005 0 Tem SW Clamper 2 C022 75 048022 0 Bus Bar Washer 4 C023 1 r e v o C C P 0 2 1 0 8 4 0 6 7 PR01 69 048032 0 Copper Spacer 2 C024 85 008001 1 Spacer...

Page 14: ...6 0 Screws BTB2 6 8 P001 88 048001 0 Shipping Box 1 P002 1 x o B t f i G 0 2 0 0 8 4 0 8 8 P003 89 048001 0 Polyfoam Bottom 1 P004 89 048002 0 Polyfoam Cap 1 P005 87 048004 0 Non woven cloth Bag 1 P00...

Page 15: ...CONNECT BOARD Circuit DIAGRAM 5 FRONT PANEL BOARD Circuit DIAGRAM 6 BALANCE INPUT BOARD Circuit DIAGRAM 7 POWER BOARD Circuit DIAGRAM PRINTED CIRCUIT DIAGRAMS 1 Preamp Main board PREM 2 Preamp LCH inp...

Page 16: ...standby button A ELECTRICAL TROUBLESHOOTING GUIDE 5V is Right NO YES Check the MCU on the keyboard Check U84 and Q82 Check the D81 Check F902 and F903 Check the main transformer Check B603 B604 B703 B...

Page 17: ...Check D990 D991 YES A 72V power supply is correct Check R646 R647 R746 R747 R622 Check B606 B706 Check Q609 Q610 Q611 Check the PCB track THE END YES 72V power supply is correct NO Check R623 Check Q...

Page 18: ...NO YES Wate for 10 second Press listen mode biamp key to change input and out put mode Input 2V RMS 1K sinewave turn volume to 0dB measure preoutput level and THD Level 2V 0 1V B Check U105 U205 U104...

Page 19: ...EL_CLK signal THE END Press Tone Key to change tone setting measure preout response YES Level 2V 0 1V THD 0 03 NO Check U109 U209 U111 U211 Check OPSEL_STB signal Press Z 2 record key to current input...

Page 20: ...DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1 SYSTEM 11MHz CLOCK 2 AT89C51 reset is high active 3 6 All manuals and user guides at all guides com...

Page 21: ...3 volume control DATA and CLOCK 4 REC ZONE select DATA and CLOCK 3 7 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 22: ...5 Input select DATA and CLOCK 3 8 All manuals and user guides at all guides com...

Page 23: ...03 B604 72V REGULATOR B606 ON PSU ISC CIRCUIT ON PSU D602 D603 L CHANNEL ON L AMP AMPLIFIER B605 20V REGULATOR B606 ON PSU PRE AMP ON PRE AMP BALANCE AMP ON BAL OUTPUT RELAYS L CHANNEL ON L AMP L CHAN...

Page 24: ...BY PASS 40 60 80 100Hz PRE OUT1 PRE OUT2 INPUT SELECTOR BALANCE AMP DISC CD TUNER INPUT4 INPUT5 INPUT6 BALANCE 0 6 5dB SELECTABLE GAIN AMP STAGE 54dB ATTENUATOR 2dB STEP 5dB TONE CONTROL 1dB STEP BIAM...

Page 25: ...U84 U85 7400 FPP D81 Tri color LED FPP P4 0 P4 1 P4 2 P4 3 P4 4 P4 5 P4 6 P4 7 P5 0 P5 1 P5 2 P5 3 P5 4 P5 5 P5 6 P5 7 U108 U113 U208 U213 CD4094 PRE RL101 RL112 RL201 RL212 For Input Select and Biam...

Page 26: ...GND AGND AGND AGND GND GND C303 10uF 50V C304 10uF 50V C311 100UF 25V C312 100u 25V R335 10K R343 10K C316 0 1uF C317 0 1uF C309 0 1uF C310 0 1u 80V AGND AGND Q326 2SA970 Q325 C2240 R364 6K8 C321 4u7...

Page 27: ...X4621 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 COM1 COM2 NO2 IN2 V VL GND V IN1 NO1 U107 MAX4621 R1001 27 4 R1002 28 0 6 5 7 U102B AD8512ARZ 1D13 1N4148 1D14 1N4148 1R90 1M 1R91 10K C128 1U 1R93 1M 4 3...

Page 28: ...02 120V 5A 250V 1 2 3 4 CZ902 CON4 1 2 JP906 120V 1 2 JP907 230V 1 2 JP908 120V 1 2 3 4 CZ908 CON4 1 2 JP900 120V 1 2 3 4 1 2 7 8 5 6 3 4 Standby R Core 10VA Transformer To two main transformers to HS...

Page 29: ...VOLA HDATA VOLL_STB OPSEL_CLK 24VL 24VL 24VR 24VR RXD TXD 5V IR IN IR OUT TRIG TRIG OPSEL_CLK HCLK HDATA FUNC VOLR_STB VOLR_DATA VOLR_CLK VOLL_CLK VOLL_DATA VOLL_STB VOLA TONE OPSEL_DATA OPSEL_STB ZER...

Page 30: ...GND 5V P1 5 CEX2 27 P1 4 CEX1 25 P1 3 CEX0 23 P1 2 ECI 22 P1 1 T2EX 21 P1 0 T2 19 P0 7 AD7 3 P0 6 AD6 5 P0 5 AD5 6 P0 4 AD4 9 P0 3 AD3 11 P0 2 AD2 12 P0 1 AD1 14 P0 0 AD0 15 VCC 17 P2 0 A8 54 P2 1 A9...

Page 31: ...7 2SA1312 Q527 2SC2983 Q532 2SC2983 Q518 2SA1312 Q519 2SA1312 L52 100uH Q521 2SA1312 Q520 2SA1312 Q533 2SC3324 Q534 2SC3324 D5121N4148 D5131N4148 D5141N4148 Q522 2SA1312 D515 1N4148 Q535 2SC3324 Q531...

Page 32: ...C621 22n 100V R646 0 22 1W FS R647 0 22 1W FS R648 0 22 1 2W FS R649 0 22 1 2W FS C632 22n 100V C633 22n 100V C634 1000u 100V C635 1000u 100V R616 1K R617 1K R622 3R3 1 2W FS R619 1K R618 1K R620 1K R...

Page 33: ...3 1C54 1C26 J201 1R76 1R77 1R75 R120 R121 R128 R122 R123 R124 R125 R126 R127 R129 C140 1R83 1C28 C142 1D12 1Q14 1Q28 1R101 2C48 1C48 2Q18 2Q14 U210 Q205 R214 R270 2C41 2C43 2C42 L2 R285 2D17 J207 R279...

Page 34: ...04 1C04 C131 C130 C102 R103 RL101 R105 C121 R104 LRCA2 C103 C120 LRCA1 J208L R102 C101 R101 Top layer 1R52 R164 R264 2R106 1R32 1R27 R159 Q118 C113 R146 C109 1R28 Q119 R160 1R29 Q120 R161 2R37 1R38 Q2...

Page 35: ...04 C666 C627 J602 HEATSINK B604 C621 C620 C622 D603 R648 R649 R647 R646 C618 C617 D601 R601 D604 R610 P601 P602 P603 B603 C623 J603 C601 R667 D617 B606 Q606 Q605 C632 Q601 TP601 R651 C634 VR601 R654 D...

Page 36: ...C517 R532 R540 R558 C552 Q528 C546 C534 R564 Q54 R528D52 R531D55 C518 C540 CZ504 C520 C543 R550 C530 C525 R559 C556 C557 C555 C554 Q515 Q530 R562 R548 R570 R534 C526 R552 R563 C548 R561 Q535 R539 C529...

Page 37: ...991 C993 HS4 M3 B008 ENC VM1 0_pcb ER1 EC4 EC1 ER2 EC2 ECZ1 ER4 EC5 ES1 ER3 EC3 HS4 M3 B007 LSPK VM1 0_pcb C COYPRIGHT NAD ELECTRONICS HS4 M3 B007 RSPK VM1 0_pcb C COYPRIGHT NAD ELECTRONICS CZS1 CZS2...

Page 38: ...VOLRSTB HDATA VOLLDATA OPSEL DATA OPSEL STB C824 U87 C814 R828 R829 R830 C821 R848 C835 C812 R846 Q87 Q85 R825R824 U84 R844 Q86 U85 R849 IRIN RXD PRO VOLA TONE R847 IROUT TXD STBY C825 X81 C826 R834 R...

Page 39: ...ard bottom STBB CZ902 C904 CZ908 C903 CON4 NAD M3 STBB BOARD VM1 0 C COYPRIGHT NAD ELECTRONICS C908 IC1 C907 C906 B902 C902 C905 B901 C901 Top layer Bottom layer 3 25 All manuals and user guides at al...

Page 40: ...STBT BOARD VM1 0 C COYPRIGHT NAD ELECTRONICS put the jumper on those designator marked as 230V put the jumper on those designator marked as 120V Version select C version Version select AH version 120...

Page 41: ...30 IC301 R332 R333 R395 C311 R334 D302 Q354 R344 R396 VR301 C312 B301 D321 R321 R301 R326 D305 D306 R323 R327 C323 D320 C318 IC304 R376 R377 R37 R387 R313 Q302 P304 D316 R3B8 Q320 R3B3 R382 Q323 C322...

Page 42: ...C411 Q417 Q413 R430 IC401 R433 R432 R435 Q456 R4A6 R4A3 D407 D408 Q426 D409 R463 C420 R464 R467 R4A5 D340 R4A2 R4A1 R462 C421 Q454 R461 R498 R466 R497 R495 R434 B401 2005 C COPYRIGHT NAD ELECTRONIC M...

Page 43: ...10 MC107 MR109 MR117 MC106 MQ103 MQ101 MQ111 MC109 MR118 MQ115 MQ110 MQ112 MQ103 MC112 MR110 MR118 MC109 MQ115 MD109 MD110 MC107 MP101 MR109 MR117 MC106 MD109 MD110 MC111 MD107 M3 PreAmpModule VM1 0 M...

Page 44: ...0031 02 Chip Alu Electrolytic Capacitor 2 4 5 5 5 3 5 C 4 3 5 C 0 2 V 5 3 F u 0 1 2 06 33011 04 Chip Alu Electrolytic Capacitor 2 4 5 3 6 7 5 5 C 6 5 5 C 0 2 V 6 1 U 3 3 RESISTORS 2 07 90000 01 Chip R...

Page 45: ...hip Capacitor 1nF 50V 5 C810 C833 C834 C835 C836 C837 0805 6 2 26 10351 01 Ceramic Chip Capacitor 10nF 50V 5 C812 0805 1 2 26 10451 01 Ceramic Chip Capacitor 0 1uF 50V 80 20 C811 C815 C816 C817 C821 C...

Page 46: ...STANDBY PCB FR 4 1 6mm 165mm 48mm 1 2 94 048005 0 Warning Label 10 YELLOW PCB 2 2 1 P N 01 50307 02 STANDBY BOARD BOTTOM DIODE 2 33 30112 00 Diode Bridge DF1501S B901 B902 BRIDGEDF 2 ICS 2 03 01117 0...

Page 47: ...25 22361 05 Metallized Polyester Film Capacitor 22nF 63V 5 C340 Pitch 5mm 1 2 25 10412 10 Metallized Polyester Film Capacitor 0 1uF 100V 10 C316 C317 C322 C323 Pitch 7 5mm 4 2 25 10412 11 Metallized P...

Page 48: ...R350 R376 Pitch 10mm 2 2 07 20105 10 Metal Film Resistor 1M 1 4W 5 R352 R354 Pitch 10mm 2 2 07 30108 10 Oxidized Film Resistor 0 1 1W 5 R3B1 R3B2 R3B3 R3B4 R3B5 R3B6 R3B7 R3B8 Pitch 15mm 8 2 07 30229...

Page 49: ...412 10 Metallized Polyester Film Capacitor 0 1uF 100V 10 C422 C423 C416 C417 Pitch 7 5mm 4 2 25 10561 02 Metallized Polyester Film Capacitor 1uF 63V 5 C427 C429 Pitch 5mm 2 2 06 22951 05 Alu Electroly...

Page 50: ...07 30820 00 Oxidized Film Resistor 82 1 2W 5 R409 R423 Pitch 10mm 2 2 07 30331 11 Oxidized Film Resistor 330 1 2W 5 R432 R441 Pitch 10mm 2 2 07 30339 11 Oxidized Film Resistor 3 3 1W 5 R499 Pitch 12 5...

Page 51: ...Electrolytic Capacitor 10uF 100V 20 C642 C742 C643 C743 Pitch 5mm 4 2 06 22051 00 Alu Electrolytic Capacitor 22uF 50V 20 C654 C655 C754 C755 Pitch 5mm 4 2 06 22012 00 Alu Electrolytic Capacitor 22uF...

Page 52: ...CZ603 CZ703 CB10 2 2 17 07102 00 AC INLET GSP1 9500 1 R 30190 2PIN AC INLET 1 SWITCHES 2 11 01101 03 Power Switch RF 1003 BB2 S1 POWER2 1 AC FILTER 2 22 00010 00 EMI FILTER 250V 10A 50 60HZ EMI FILTER...

Page 53: ...Ceramic Chip Capacitor 10nF 50V 10 1C23 2C01 2C03 2C05 2C07 2C09 2C11 2C13 2C15 2C17 2C19 2C21 0805 12 2 26 10451 01 Ceramic Chip Capacitor 100nF 50V 80 20 1C24 1C25 1C33 1C34 1C35 1C36 1C37 1C38 1C3...

Page 54: ...01 Chip Resistor 4K7 5 1R23 2R01 2R02 2R03 2R04 2R05 2R06 2R07 2R08 2R09 2R10 2R11 2R12 2R13 2R14 2R15 2R16 2R17 2R18 2R19 2R20 2R21 2R22 2R23 0805 24 2 07 95101 01 Chip Resistor 5K1 1 1R47 1R48 1R55...

Page 55: ...p Resistor 220 5 MR109 MR114 MR118 0805 3 4 4 07 90223 01 Chip Resistor 22K 5 MR117 0805 1 4 4 07 90333 01 Chip Resistor 33K 5 MR101 0805 1 4 4 07 90100 05 Chip Resistor 10 1 2W 5 MR115 MR116 2010 2 4...

Page 56: ...6 1R27 1R28 1R29 1R30 1R31 1R32 1R33 1R34 1R35 1R36 1R37 1R38 1R39 1R40 1R41 1R42 1R43 1R44 1R45 1R46 2R24 2R25 2R26 2R27 2R28 2R29 2R30 2R31 2R32 2R33 2R34 2R35 2R36 2R37 2R68 2R69 2R70 2R71 2R72 2R7...

Page 57: ...tch 7 5mm 2 1 A07 10229 10 Carbon Film Resistor 2 2 1 4W 5 Taping 2 1 32 28042 00 Ground tap GND 8 4 TRANSFORMER AC CORD 1 18 53231 01 MAIN TRANSFORMER TORIOD TI 043813 AU ISS 7 ONE 70mm THE OTHER 90m...

Page 58: ...1 76 048012 0 PC COVER PC T 0 30 Clear Standby Board TOP 1 FASTENERS 1 61 023106 0 Self Taping Screws STB3 6 Back board 2 2 1 61 023206 0 Self Taping Screws BTB3 6 critesistor 2 front bracket 4 Back...

Page 59: ...53 10mm 6 1 94 048003 0 Barcode Label C version 117 155mm C 2 1 94 048004 0 Barcode Label AH version 117 155mm AH 2 1 94 048006 0 Barcode Label CH version 117 155mm BC 2 1 94 048013 0 Barcode Label C...

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