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NAD C 725BEE, Service Manual

The NAD C 725BEE audio receiver is a powerful and versatile product designed to enhance your music listening experience. Discover the full potential of this exceptional device with the comprehensive Owner's Manual available for free download from manualshive.com, providing you with all the necessary instructions and guidance.

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R1

2

2

Q

117

R1

6

3

R1

6

5

R1

6

2

D1

0

1

J5

0

J2

0

6

R3

6

6

R3

6

1

IC3

RL

3

1

0

D3

2

3

J196

Q315

R1

6

4

C341

C3

2

8

C338

(G

ND

)

RT34

C340

Q402

C303

C417

R407

Q401

R402

C3

6

1

R3

6

3

R4

0

3

J123

J207

C302

Q404

R406

C418

C301

R404

Q403

R4

0

5

C327

R3

4

2

R3

4

3

R3

2

6

CZ

3

4

J2

0

8

J2

0

9

J3

0

3

C339

J1

9

7

C348

J1

9

3

C337

J1

6

5

R362

Q310

CB46

R3

3

2

C3

3

4

C3

3

3

R323

RT31

C332

C331

R3

3

1

J15

RT

3

2

R3

2

9

VR303

J2

1

7

J2

2

0

(P

R

E

 IN

 R

)

(P

R

E

 I

N

 L)

J1

6

3

C3

3

0

R3

2

8

C329

R3

2

7

C366

(GND

)

(G

ND)

C345

VR301

R3

2

5

C335

D3

2

2

C336

R321

R319

R320

R1

5

6

R1

6

0

R324

R322

R1

5

7

RL

3

9

J1

0

R3

3

0

J2

1

1

VR304

J212

J325

J324

R336

R334

R1

3

3

Q316

C16

R1

6

8

R1

3

1

J

2

88_1

Q

118

C1

2

3

C376

R344

C1

2

8

R316

J2

7

4

D1

0

3

D1

0

2

R17

R18

J8

7

IC

1

1

C371

CB38

R1

6

6

J42

R1

6

7

R1

4

2

R1

0

7

R1

2

7

J

8

6_1

R4

3

9

J3

1

8

Q412

Q115

R4

3

8

C121

(+46V)

(-46V)

NAD C725BEE MAIN BOARD Vc3.0

COPYRIGHT  C  2008  NAD  ELECTRONIC

C725BEE MAPHONEJACK

C1

1

C2

1

J7

4

(S

U

B

 OUT)

J1

8

0

R148

(-

46V

)

D17

C220

D27

R248

Q11

Q21

R2

4

3

R2

2

6

R2

2

4

R2

3

2

R2

3

0

R4

2

5

D4

1

1

R4

2

1

R4

1

6

C4

1

6

R4

1

7

C1

1

5

R498

C1

1

4

J3

1

7

J3

3

2

J2

51

TP4

(R-OUT) R145

R144

Q114

Q119

Q219

J2

5

3

J3

3

7

J2

5

2

(+

4

6

V

)

J2

5

4

(-

46V

)

TP3

R1

4

7

R1

7

0

R2

7

0

C120

VR13

C1

1

2

C110

J2

4

8

J3

42

J3

0

4

(+46V)

J2

9

C1

1

3

J2

4

9

J3

45

Q113

R1

7

2

Q116

Q112

Q111

D1

2

R1

2

5

J1

9

1

R1

3

7

J

2

6

1

R1

3

9

J2

3

7

J2

67

R1

2

9

R1

3

8

J3

2

6

C111

C1

2

4

R1

6

9

J302

J2

1

9

D1

4

R1

2

0

J298

D1

6

Q19

C1

9

Q1

7

J195

C1

4

R1

5

5

R1

7

1

R1

1

9

VR12

Q18

J299

C1

8

R1

2

1

R1

2

3

D1

3

R1

2

6

R1

3

0

C15

D4

1

0

R4

2

0

Q1

6

D1

5

C1

3

R1

5

4

Q48 Q47

C4

1

5

R4

1

9

R4

1

8

J321

J340

J115

J339

R4

2

4

R4

2

2

R1

4

6

J2

5

0

J3

36

J3

38

J2

6

9

Q110

R152

J295

R252

H5

R1

3

6

D1

1

R1

0

8

R1

4

3

R1

2

8

R1

2

4

R1

3

2

R2

7

2

VR23

R2

3

3

J85

C229

J2

5

6

J2

5

9

(+46V)

J2

6

6

H4

Q210

C2

1

2

R2
4

6

Q212

Q216

R2

3

6

R2

0

8

R2

2

8

R2

3

9

D2

1

C25

VR22

C210

R2

7

1

R2

1

9

R2

2

1

Q28

R2

2

3

J272

J290

D2

5

D2

3

R4

2

3

C2

8

Q2

6

Q46

C2

3

Q45

R2

5

4

J271

J288

R2

2

0

C211

R2

6

9

C2

2

4

R2

3

1

D2

0

3

D2

0

2

J2

7

7

D2

4

R2

2

2

D2

6

Q29

Q21

7

R2

6

8

Q

218

C2

2

3

J255

C2

9

R2

6

3

Q2

7

R2

6

2

C2

4

D2

0

1

R2

6

5

R2

5

5

R2

6

1

C221

C2

2

8

J2

74

J8

7

IC

2

1

R2

6

6

R2

6

7

R2

6

4

J2

7

3

J2

8

5

C2

1

3

Q213

J2

7

9

R2

3

7

Q211

R2

2

5

J8

9

J2

81

R2

2

9

R2

3

8

D2

2

R2

4

2

J8

6

R2

0

7

R2

2

7

Q214

J2

1

6

J2

5

7

J2

9

4

C2

1

4

C2

1

5

R499

R2

4

7

TP2

J2

5

8

R244

R

J401

JK41

Q215

R4

6

7

R245

TP1

J2

76

(-46V

)

J1

(+

4

6

V

)

J280

J2

7

8

J3

1

4

CZ46

R459

R458

CZ45

L

(R-OUTPUT)

D413

RL12/2

CB

4

9

+37V

-46V

GND
+46V

J315

DGND

-37V

AC DET.

GND

ISC TRIG

BU

AB

A

R

-R

 O

U

T

L21

J296

+18V

I-V

CB47

CB

4

5

R4

5

2

PL

PGND

J6

PR

D412

C4

3

5

BU

SB

A

R

-L

 O

U

T

C26

J8

4

J8

3

(G

N

D

)

J8

2

J8

1

J8

0

(GND

)

(MAIN

 IN

 L)

J7

9

J7

8

J7

7

J7

5

(G

ND)

(MA

IN

 IN

 R

)

(P

R

E

OU

T L)

J7

6

(G

ND

)

(P

R

E

OU

T R

)

R483

R487

R490

J1

8

J1

9

J2

0

J2

1

J16

J17

C4

3

6

J5

6

J8

J1

0

*

R4

5

3

L11

J1

1

J1

2

J1

3

J1

4

R1

5

0

R1

5

1

S41

C119

J5

ROUT

C118

D419

R445

R491

R488

R446

D420

J3

6

RCA35

RCA34

*

L OUT

R2

5

0

J2

R2

5

1

C219

J3

J3

0

1

RL12/1

J4

C218

Binding Posts

(-

3

7

V

)

(+37V)

(GND

)

(+

1

8

V

)

(-

18V

)

J1

3

8

(DGN

D)

C342

C414

C413

(-

3

7

V

)

(+37V)

R346

C3

2

0

R345

C3

1

9

J213

J170

J194

(-18V)

C410

R1

5

8

R1

6

1

J343

J329

C1

2

2

J3

2

7

R1

0

6

Q1

04

(G

N

D

)

J3

2

8

(+

1

8

V

)

R333

J52

R335

R1

0

5

R1

0

4

R1

0

1

Q

103

R1

0

3

R1

0

2

C1

0

4

Q10

2

R1

9

Q1

5

R1

1

0

R1

1

2

Q1

3

R1

1

5

R1

1

6

L12

R1

5

9

C1

0

3

Q101

J

2

93

_1

J333

Q1

4

Q12

R1

1

1

R1

4

C1

2

R1

4

9

R3

9

7

OU

T MOD

U

L

E

C3

6

8

(+18V)

(-18V)

R3

8

3

R3

8

4

J214

J162

J1

88

CB33

J218

J2

05

C365

(G

ND

)

C412

VR302

C346

C48

J160

R42

J169

R41

J1

6

7

J1

66

C49

C44

C43

C411

C47

R1

1

C1

7

J3

2

2

R1

2

J348

J347

J346

J341

R1

5

R449

R493

R359

R360

R3

8

5

R3

8

7

C3

4

9

R3

8

6

R3

6

4

R3

8

8

C3

5

0

IC34

R3

6

5

J1

72

R4

1

2

R4

1

4

R4

8

J215

C347

C3

6

0

Q416

Q42

R3

9

3

R450

R3

4

0

R494

Q417

D315

J201

J200

J202

R454

R455

J174(DGND)

CZ38

R4

4

R4

6

R4

3

R4

9

Q44

R4

1

0

R4

0

1

R4

1

3

D4

9

R4

1

1

R4

7

Q4

3

C4

6

H2

H1

C4

5

Q41

R4

5

C431

R4

5

1

R4

8

2

J1

8

2

J1

47

C4

2

1

C4

3

2

(+18V)

C4

2

2

J146

IC44

C12/1

D4

2

3

R1

2

/1

J1

3

9

R1

2

/2

R4

3

5

Q1

2/

1

R4

3

6

D4

2

8

R4

8

9

R4

5

7

Q39

R4

4

0

J1

4

2

Q4

11

VR3

R4

7

1

R4

7

0

Q421

R4

9

7

R4

7

8

R3

8

2

R3

8

1

R4

4

8

J1

43

J133

C4

3

4 J35

(DGND)

J144

J145

J1

4

1

R4

9

6

J112(DGND)

J131

J198

J130

(+12V)

C4

3

0

R4

6

8

C4

2

6

R4

7

2

J137

R4

6

9

R

4

7

4

J136

C4

2

9

J9

6

R4

7

7

J1

0

5

J9

7

J134

R4

7

3

J9

8

D4

1

8

D4

1

7

C425

R4

7

9

C428

R4

8

0

R4

7

6

J9

9

IC43

J1

0

0

R2

0

5

Q204 R2

0

6

R2

0

4

C2

0

4

Q202 R2

1

0

Q25 R2

1

2

Q23

R2

1

6

L2

2

R2

1

5

R2

5

9

J149

J150

J151

J152

J153

J154

J155

(+18V)

(-18V)

C2

7

R2

1

R2

2

J344

R2

5

J268

R2

0

1

Q203

R2

9

Q24 R2

1

1

Q22 R2

4

C2

2

C2

0

3

R2

0

3

R2

0

2

Q20

1

J2

9

3

R2

4

9

(-37V)

(+37V)

(+46V)

(-46V)

(-18V)

J1

4

8

R4

4

1

IN MODULE

J157

J158

C325

C4

2

0

C321

C323

C3

6

7

J1

14

C324

J90

J1

1

6

J3

3

0

CB32

R398

R3

9

6

R399

C326

C322

R2

5

8

R2

5

6

R2

5

7

J3

2

3

C2

2

2

(G

ND)

J349

R2

6

0

J156

IC4

J334

J1

8

1

J1

9

2

Q34

J5

8

D3

1

3

R3

6

7

J1

2

4

R3

1

J2

2

3

R3

7

8

J6

6

(G

ND)

J3

1

6

J331

J5

4

G

N

D

 BU

SB

A

R

J9

5

J9

2

(P

R

E

 IN

 R

)

(PR

E

 IN

 L)

J9

3

J9

4

C3

5

5

R3

7

7

J7

2

R3

7

6

C3

5

4

R3

7

5

Q36

J3

4

D310

(G

N

D

)

RL

3

4

R3

7

4

J7

1

C3

5

3

R3

7

3

J6

8

J7

0

Q35

RL

3

3

D39

J6

9

RL

3

2

J2

2

J2

4

J2

3

J2

5

J2

8

J2

6

IC31

J30

J2

7

J3

1

9

(+12V)

R4

9

2

RL

3

5

Q37

D311

J5

5

J1

0

4

R3

9

5

C3

6

9

J1

1

1

(+

1

2

V

)

R3

6

8

R484

J1

2

5

D3

1

4

IC32

J1

0

8

Q42

7

J1

0

6

R4

8

5

Q42

6

J101

J102

J103

J126

C358

Q317

J129

J128

J127

J57

J107

C3

7

7

R3

5

4

(+5V)

J320

D324

CZ

3

5

J1

3

2

R3

J5

9

(D

GND)

J6

4

(+

1

2

V

)

CZ36

D320

RL38

(DGND)

C4

1

9

R4

1

5

J120

C3

5

2

J63

R3

7

1

J6

7

R3

7

2

R3

7

0

C3

5

1

Q33

D38

R3

6

9

R3

8

0

C3

5

6

J6

2

R3

7

9

R4

J6

0

Q38

D37

Q313

D312

Q424

PH

O

N

E

1

C3

1

C3

2

RL31

C3

7

C3

6

J1

7

3

R3

4

9

R3

5

0

R3

2

R3

7

J65

J4

8

J53

J3

7

RL36

J4

9

CB

3

5

CB311

RL37

RCA31

J2
0

3

R36

R432

R355

R394R431

R430

C444

D3

2

1

C3

7

0

R460

R461

PH

O

N

E

2 R2

R3

1

5

CZ37

J51

J119

(+5V)

R1

3

Q314

C3

J121

R433

C362

R434

Q425

J3

2

J3

1

J3

3

5

RL311

J6

1

R3

9

RCA33

J3

8

C3

9

C3

1

0

R3

5

8

R3

5

7

R3

1

0

C3

8

C3

5

R3

5

R3

5

3

R3

5

6

J3

9

J4

0

(GND

)

J4

1

C3

3

R3

8

C3

4

R3

5

1

R3

5

2

J4

3

J4

5

J4

4

R3

3

(G

ND

)

R3

4

J4

6

RC

A

3

2

J4

7

Summary of Contents for C 725BEE

Page 1: ...NAD SERVICE MANUAL C 725BEE STEREO RECEIVER C 725BEE STEREO RECEIVER ...

Page 2: ...RONT PANEL VIEW 5 SPECIFICATIONS 6 7 WIRING DIAGRAM 8 BLOCK DIAGRAM 9 18 ALIGNMENT PROCEDURE 19 SCHEMATICS 20 23 PCB LAYOUT 24 28 TROUBLE SHOOTING GUIDE 29 ELECTRICAL PARTS LIST 30 46 EXPLODED VIEW 47 EXPLODED VIEW PARTS LIST 48 C725BEE PACKING ACCESSORY AND PARTS LIST 49 ...

Page 3: ...APACITOR 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 REVERSE THE AC PLUG AND REPEAT AC VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R M S THIS CORRESPONDS TO 0 5 MILLIAMP AC ANY VALUE EXCEEDING THIS LIMIT C...

Page 4: ...including 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 commonly are called Electrostatically Sensitive ES Devices Examples of typical Es devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniqu...

Page 5: ...C out 9 PRE out 10 Main in 11 Sub out 12 Speaker out 13 Soft Clipping 14 ON OFF power AC switch 15 Switched AC outlet 16 RS232 input 17 MP Dock data port 18 Antenna FM 19 Antenna AM 20 DAB input 230V version only 7 Preset 8 Tune 9 VFD 10 IR Receiver 11 Record out Zone 2 selector 12 Volume 13 Headphone 14 Speaker A B 15 MP input 16 Input selector 17 Tone defeat 18 Tone controls 19 Balance 3 3 1 ...

Page 6: ...wer per channel 8 ohms 160 W 20 4 dBW 4 ohms 220 W 22 0 dBW 2 ohms 270 W 23 2 dBW Damping factor 100 ref 8 ohms 1 kHz Input Impedance R 20 kohms C 1 nF Input sensitivity for rated output into 8 ohms 780 mV Voltage gain 29 dB Frequency response 20 Hz 20 kH 0 1 dB Signal Noise ratio A weighted 100 dB ref 1 W 119 dB ref 50 W THD Noise 0 03 Total Harmonic Distortion 20 Hz 20 kHz from 250 mW to rated o...

Page 7: ...requency response 20 Hz 20 kHz 0 1 dB tone defeat on 0 2 dB tone defeat off THD Noise SMPTE IM 0 01 at 5 V out LINE LEVEL OUTPUTS Pre amp output impedance 80 ohms Tape output impedance Source Z 1kohms Maximum output level pre amp out 11 V Tape out 10 V CONTROLS Treble 5 dB at 10 kHz Bass 8 dB at 100 Hz IR IN and OUT Input Resistance 10 kohms Input Voltage Min 5 V Output Resistance 30 ohms TRIGGER ...

Page 8: ... UL2468 26AWG UL2468 26AWG UL1015 14AWG black UL1015 16AWG red white CB59 3266 18AWG 3266 22AWG CB52 CB51 1672 22AWG CB49 CB47 CB45 18AWG UL1672 C725 BEE POWERBOARD COPYRIGHT C 2008 NAD ELECTRONICS CB54 CB53 UL1672 18AWG To AC Outlet CB57 CB58 CB56 To Power Swicth To AC Cord CB55 CZ58 NAD ELECTRONIC C725BEE AC OUTPUT BOARD COPYRIGHT C 2008 FPC 1 25 20P 600MM UL2468 26AWG OUT MODULE CB33 CZ38 CB46 ...

Page 9: ... MAINBOARD SECTION KEYBOARD SECTION UNIT PRO VFD IP SEL DEFEAT MODULE PREAMP BALANCE CB32 RT34 CONTROL RT32 RT31 RL39 TONE ISC CIRCUIT RT33 CONTROL VOLUME TONE MCU IC703 TONE DEFEAT STANDBY SPEAKER A SPEAKER B REC OUT RECOUT SELECT SWITCH IC31 TC9164 MAIN IN PREOUT RELAY RL310 SUBOUT 2SK303 Q301 INPUT SELECTOR DISC TUNE MP AUX TAPE CD IC32 HCF4094 BLOCK DIAGRAM ...

Page 10: ...ND STR 1 D 2 CLK 3 OE 15 VCC 16 Q1 4 Q2 5 Q3 6 Q4 7 Q5 14 Q6 13 Q7 12 Q8 11 QS 9 QS 10 GND 8 IC707 CD4094 R710 R713 A 1 C 2 B 3 IC706 EC12E1220801 F20 IR OUT IR IN OP SEL DATA OP SEL CLK OP SEL STB2 Unit Protect IP SEL STB IP SEL DATA IP SEL CLK 5 8V 5 8V DGND F1 1 F2 69 16G 52 Q16 53 TSB 54 TSA 55 DA 56 CP 57 CS 58 RESET 59 OSC 60 VDD 61 VH 62 PGND 63 LGND 64 IC701 16 BT 130GINK OP SEL CLK OP SEL...

Page 11: ...R0L R0H R1L R1H R2 R3 A0 A1 FR R0L R0H R1L R1H R2 R3 A0 A1 FB Registers SB PC ISP USP Program Counter Stack Pointers INTB Vector Table FLG Flag Register Memory Multiplier Flash ROM RAM 3 phase PWM Port P0 4 Port P1 3 Port P2 8 Port P3 4 Port P6 8 Port P7 8 Port P8 8 Port P9 4 Port P10 8 Timer S Input Capture 8 channels Output Compare 8 channels Flash ROM Data Flash U S ART SIO channel 0 Serial Por...

Page 12: ...CD4094 KEYBOARD IC707 IC711 MAINBOARD IC32 ...

Page 13: ...IC709 s m h o K 5 s m h o K 5 s m h o K 0 0 4 s m h o K 0 0 4 F u 1 0 F u 1 0 f u 1 0 F u 1 0 F u 0 1 T U P N I V 5 C C V N I 1 T N I 2 T T U O 1 R T U O 2 R N I 2 R N I 1 R T U O 1 T T U O 2 T 2 T 1 T 1 R 2 R 5 1 D N G 1 2 3 4 5 6 7 8 9 0 1 1 1 2 1 3 1 4 1 6 1 V V 1 C 1 C 2 C 2 C V 0 1 o t V 5 r e l b u o D e g a t l o V r e t r e v n I e g a t l o V V 0 1 o t V 0 1 ...

Page 14: ...24C16 KEY BOARD IC705 PIN CONFIGURATION FUNCTIONAL BLOCK DIAGRAM WP 8 Pin PDIP 1 2 3 4 8 7 6 5 A0 A1 A2 GND VCC WP SCL SDA ...

Page 15: ...PROCESSOR SUPERVISORY CIRCUIT TPS3825 KEY BOARD IC704 BLOCK DIAGRAM Vdd _ Watchdog Timer Logic Reset Logic Reset Reset MR WDI Transition Detector ...

Page 16: ...te PIN DESCRIPTION PIN NO SYMBOL NAME AND FUNCTION 1 4 9 12 1A to 4A data inputs 2 5 10 13 1B to 4B data inputs 3 6 8 11 1Y to 4Y data outputs 7 GND ground 0 V 14 VCC positive supply voltage Fig 1 Pin configuration Fig 2 Logic symbol Fig 3 IEC logic symbol ...

Page 17: ...TC9164 MAINBOARD IC31 PIN CONNECTION BLOCK DIAGRAM ...

Page 18: ...TNY274 POWERBOARD IC51 PIN CONNECTION BLOCK DIAGRAM ...

Page 19: ...ecome to the Repeat procedure A B and C for the lowest volume level idling current alignment Adjust the pot VR3 to make the DC voltage of the point of TP5 to the same as TP6 VR303 VR301 VR302 VR304 VR13 TP4 II FINAL ADJUSTMENT and ISC original level respectively B IDLING CURRENT A LOWEST VOLUME ADJUSTMENT C ISC CIRCUIT ORIGINAL ADJUSTING 2 Running 5 minutes with no signal 1 Power on 3 Connect a os...

Page 20: ...W D58 FR107 UF4006 T51 EE16 D59 SR540 C536 0 1uF C533 330uF 10V IC53 PC817 PGND C530 0 1uF 16V R570 100 R571 510 DGND RL51 Relay SPST D533 1N4148 Standby C539 4N7 400V R574 4K7 Q522 C1815 R575 4K7 DGND 5 5V Standby DGND C544 10nF 5 5V L52 10uH C545 330uF 10V R576 0 33 1 4W C546 2 2nF 250V Y1 46V 46V 39V 37V 37V Q518 C1815 Q520 C1815 D53 39V D57 4V7 D532 TIC116D AC POWER CORD 1 2 3 4 5 6 7 8 9 10 C...

Page 21: ...REO TUNER PLL CLK1 PLL D1 PLL D0 PLL CE RDS CLK RDS DATA 12V L OUT R OUT 1 2 3 4 5 6 7 8 CZ37 CON8 STEREO TUNER PLL CLK1 PLL D1 PLL D0 PLL CE RDS CLK RDS DATA R311 470 C311 1n2 4 6 5 RL36B R337 22K TUNER L R346 220K R312 470 C312 1n2 1 3 2 RL36A R341 22K TUNER R RCA33B TAPE RCA33A TAPE 7 8 RL36C Q33 C1815 Q34 C1815 Q35 C1815 Q36 C1815 Q37 C1815 R369 4K7 R371 4K7 R373 4K7 R375 4K7 R377 4K7 C351 10n...

Page 22: ... C429 10u 25V R488 18K R487 18K R474 1K C430 10u 25V R476 1K C431 10u 25V R490 100K R491 100K 4 5 6 7 8 IC43B TL082D 18V 18V ISC CIRCUIT VR12 200 1 2 3 4 5 6 7 CB47 To Power board I V AC DET ISC TRIG RL12 2 RL12 1 C435 1nF C436 1nF R494 10k R493 10k R OUT L OUT HEADPHONE OUT L HEADPHONE OUT R C119 22n 10 63V C21 10u 16V R25 22K R24 100 Q22 A970 Q23 C2240 C22 1nF NPO R29 39k MF 5 R211 82 MF 5 R212 ...

Page 23: ... CLK RDS DATA VFD DA VFD CP VFD CS VFD RESET VFD RESET VFD CP VFD CS VFD DA IR OUT IR IN OP SEL DATA OP SEL CLK OP SEL STB2 Unit Protect 5 8V 12V DGND 39V VFD POWER1 VFD POWER2 MAIN MUTE BAND 5 8V IP SEL STB IP SEL DATA IP SEL CLK 5 8V 5 8V DGND Power On Blue Flash Power Standby Amber Power Standby Amber Power On Blue Flash F1 1 F2 69 16G 52 Q16 53 TSB 54 TSA 55 DA 56 CP 57 CS 58 RESET 59 OSC 60 V...

Page 24: ...ROUT C118 D419 R445 R491 R488 R446 D420 J36 RCA35 RCA34 L OUT R250 J2 R251 C219 J3 J301 RL12 1 J4 C218 Binding Posts 37V 37V GND 18V 18V J138 DGND C342 C414 C413 37V 37V R346 C320 R345 C319 J213 J170 J194 18V C410 R158 R161 J343 J329 C122 J327 R106 Q104 GND J328 18V R333 J52 R335 R105 R104 R101 Q103 R103 R102 C104 Q102 R19 Q15 R110 R112 Q13 R115 R116 L12 R159 C103 Q101 J293_1 J333 Q14 Q12 R111 R14...

Page 25: ...C555 CB59 To KEY Board VFD 1 39V DGND VFD 2 5 8V Standby Q510 R532 R569 C523 Tran Pro R533 R544 R534 To Main board CB54 46V D54 R558 CB51 To Transformer Q517 R561 D55 BLUE C524 C51 J509 D56 Q59 J507 D51 Q522 NAD C725BEE POWER BOARD Vm1 0 GND C517 H501 R531 CB53 GND 46V GND D513 12V 37V 37V DGND F51 R575 C544 R574 R570 R571 IC53 To Thansformer 230V D533 J512 D57 CB57 C539 RL51 S715 C725BEE STANDBY ...

Page 26: ...68 R616 R620 R624 Q611 Q68 C610 R62 Q69 CZ61 PREAMP MODULE SMD Vm1 0 R64 R69 R67 C64Q62 R612 R614 Q65 R68 R610 R617 TOPLAYER Q66 C67 C65 Q64 R63 C61 R61 C69 R619 R615 R623 C613 R625 Q61 C63 R618 Q63 R611 Q610 R613 C66 Q612 Q67 BOTTOMLAYER ...

Page 27: ...32 R767 R1 C731 C730 CZ703 S716 D719 S713 C781 C780 C779 C782 C783 C778 C777 R763 R764 C724 C775 IC711 R775 R776 D705 D704 PHONE71 S711 S712 CZ703 IC705 R777 R778 C720 S718 D701 S717 Q724 R722 R748 R766 R765 D716 C719 R755 R754 R752 R753 R758 R757 R702 R759 R760 Q704 R740 S IC703 R774 C704 R773 Y701 C723 C722 R704 IC704 C703 C721 CZ707 CZ706 CZ708 R701 IC701 C733 Q731 S703 S709 R749 R723 R720 C770...

Page 28: ...BOTTOMLAYER POWER FOR DAB GND CZ704 CZ705 CZ702 CZ701 CZ711 TRANS PRO DET 5V5 STANDBY 39V GND GND CB710 ...

Page 29: ...CIRCUIT IS THE S N BAD YES NO CHECK THE CABLE AMP SECTION IS THE MUTE SIGNAL HIGH LEVEL IS THE PREAMP MODULE NORMAL IS THE TONE DEFEAT CIRCUIT IS THE VOLUME CONTROL CIRCUIT NO NORMAL YES YES NO NO NO NORMAL YES YES YES CHECK THE AMP CIRCUIT SECTION CHECK THE DC SERVO CIRCUIT CHECK THE MAIN TRANSFORMER CHECK THE PREAMP CIRCUIT SECTION CHECK THE PROTECTION CIRCUIT CHECK ALL POWER SUPPLIES CHECK THE ...

Page 30: ...00 18V 0 5W D410 D411 33 11800 00 18V 0 5W D325 33 15609 00 5 6V 0 5W TRANSISTORS Q310 J31 00363 00 2SK363 Q12 1 Q16 Q26 Q44 Q45 Q47 Q401 Q403 Q411 Q424 31 01015 00 2SA1015 Q11 Q17 Q21 Q27 Q33 Q34 Q35 Q36 Q37 Q38 Q39 Q43 Q46 Q48 Q314 Q315 Q316 Q317 Q402 Q404 Q412 Q416 Q417 Q421 Q425 Q426 Q427 31 01815 00 2SC1815 Q313 31 01815 00 2SC1815 Q12 Q15 Q22 Q25 Q102 Q104 Q117 Q202 Q204 Q217 J31 00970 00 2S...

Page 31: ...11 C21 06 10051 08 10uF 50V 20 C12 1 C13 C14 C23 C24 C48 C128 C228 C301 C415 C416 C425 C426 C428 C429 C430 C431 06 10051 00 10uF 50V 20 C325 C326 C341 C342 06 47021 06 47uF 25V 20 C110 C111 C210 C211 C323 C324 C365 C366 C49 C410 06 47031 05 47uF 35V 20 C47 06 47051 02 47uF 50V 20 C103 C104 C203 C204 C420 06 10111 00 100uF 16V 20 C15 C16 C25 C26 C413 C414 C43 C44 06 22161 00 220u 63V 20 C422 06 331...

Page 32: ...5 1KΩ 5 1 4W R166 R266 07 10562 50 5K6 1 6W 5 R12 1 07 10682 50 6K8 1 6W 5 R484 07 10822 51 8K2 1 4W 5 R164 R165 R264 R265 R364 R365 R366 R402 R404 R433 R434 R449 R450 R460 R469 R470 R471 R493 R494 07 10103 50 10K 1 6W 5 R401 07 10103 51 10K 1 4W 5 R487 R488 07 10183 51 18K 5 1 4W R387 R388 07 10203 50 20K 1 6W 5 R12 2 R15 R25 R152 R252 R382 R355 R394 R438 R468 07 10223 50 22K 1 6W 5 R349 R350 R35...

Page 33: ... R205 R210 07 20393 50 39K MF 5 1 6W R121 R122 R221 R222 07 20104 50 100KΩ 5 1 6W R497 07 21803 50 180k 1 6W 1 R102 R104 R202 R204 07 20224 50 220KΩ 5 1 6W LINKS J10 J11 J13 J14 J15 J19 J20 J29 J30 J33 J42 J52 J53 J56 J59 J60 J62 J64 J67 J71 J72 J87 J114 J118 J119 J122 J130 J136 J141 J142 J143 J147 J148 J157 J160 J162 J173 J191 J200 J201 J202 J212 J219 J221 J224 J225 J226 J227 J233 J243 J247 J258 ...

Page 34: ...IC4 IC43 03 00082 00 TL082CP D IC34 03 05532 00 NE5532N IC44 02 01237 00 IC31 J03 09164 00 TC9164CNG IC32 03 04094 00 CD4094 HEF4094 CAPACITORS C31 C32 C33 C34 C35 C36 C37 C38 C39 C310 05 10113 05 100pF 1KV 10 C118 C218 25 10461 04 0 1u 63V 5 RESISTORS R150 R250 07 30109 01 1Ω 1W 5 R124 R125 R224 R225 07 30339 00 3 3Ω 1 2W 5 R496 07 30750 02 75Ω 2W 5 R452 R453 07 30221 03 220Ω 2W 5 R128 R129 R228 ...

Page 35: ...UL2468 26AWG SCN 2 5A 8D plug XHB 2 5A 8Y connector white L 470mm to upc1237 module 13 12508 02 2 54 8pin plug TP1 TP2 TP3 TP4 TP5 TP6 13 10001 00 Test 1 R CB46 13 22502 00 XHB2 5A 2A CB45 CB38 CZ38 13 22503 00 XHB2 5A 3A CB47 13 22507 00 XHB2 5A 7A CB49 13 23904 00 VH 3 96A 4A CZ36 13 21217 00 FPC1 25 17PIN CZ35 13 21220 00 FPC1 25 20PIN RCA31 RCA32 RCA33 RCA34 17 01004 05 4 holes RCA35 17 01001 ...

Page 36: ...TAL PARTS GND BUABAR 69 123001 0 T2Y2 T 1 0mm BUABAR R OUT 69 047001 0 BUABAR R OUT BUABAR L OUT 69 047005 0 BUABAR L OUT H1 H2 70 091005 0 ALU 6063 BLACK H4 H5 70 019003 1 aluminum 30mm 76 1 1 2 61 022510 5 MB2 5 10 76 1 61 022208 6 BTB2 6 8 76 1 62 010202 5 M2 5 PREAMP MODULE PCB 01 35504 00 TRANSISTORS Q61 Q62 J31 00209 00 2SK209 GR Q63 Q65 J31 01312 00 2SA1312 GR Q69 Q610 Q611 Q612 J31 03324 0...

Page 37: ...M SW Clamper 66 018005 0 65Mn HRC48 52 Main Heat Sink 70 123004 0 6063 T5 L 80 POWERBOARD 01 72502 10 AH 01 72502 20 C DIODES D533 33 44148 00 1N4148 D59 33 20540 00 SR540 D58 33 20107 00 FR107 D58 or 33 24006 00 UF4006 D513 D536 D538 33 24004 02 1N4004 D513 33 24004 00 1N4004 D57 33 14709 04 4 7V 0 5W 2 D52 33 16209 00 6 2V 0 5W 5 D53 33 13900 10 39V D54 D56 33 30142 00 DB104 D510 33 30162 00 DB1...

Page 38: ... 4700u 25V 20 C517 C518 06 15351 01 15000u 50V 20 RESISTORS R531 07 40507 03 0 05 3W 5 CE R570 07 10101 50 100R 5 1 6w R561 R565 07 10101 51 100R 5 1 4w R532 07 10221 50 220Ω 5 1 6W R571 07 10511 50 510R 5 1 6w R558 R562 R574 R575 07 10102 50 1KΩ 5 1 6W R559 R560 07 10102 51 1KΩ 5 1 4W R534 07 10222 51 2 2KΩ 5 1 4W R568 07 10332 50 3 3KΩ 5 1 6w R566 07 10472 51 4 7KΩ 5 1 4W R567 07 10153 50 15K 5 ...

Page 39: ...5 BLACK H501 H502 70 042001 0 L 30 H501 H502 H504 61 023204 0 BTB3X4 H503 61 023508 0 MB3 8 H503 62 010302 2 M3 H503 63 020308 1 Φ3 KEYBOARD 01 72503 10 AH 01 72503 20 C TRANSISTORS Q724 Q733 31 00114 05 DTC114EKA ICS IC703 03 30281 11 M30281FAHP programmed IC703 J03 30281 01 M30281FAHP IC704 J03 03825 50 TPS3825 50DBVT CAPACITORS C777 C778 C779 C780 C781 C782 C783 26 47051 00 47pJ 50V 0603 NPO C7...

Page 40: ...5 0805 R775 R782 07 90104 01 100K 5 0805 R774 07 90105 01 1M 5 0805 DIODES D701 D702 D703 D704 D705 D716 D718 D722 D723 D724 33 44148 00 1N4148 D721 33 13309 00 3 3V D710 D711 D712 D713 D714 D715 D719 33 50360 03 LED Φ3 TRANSISTORS Q704 31 02690 00 KSC2690AYSTU Q701 Q702 Q706 Q707 Q708 Q709 Q710 Q711 Q731 Q732 Q734 31 01815 00 2SC1815 GR Q703 Q723 31 01815 00 2SC1815 GR ICS IC701 J23 16157 00 16 B...

Page 41: ...3 21220 00 FPC1 25 20PIN METAL PARTS 75 123001 0 ABS Black OP PN 25 024 0352 90 61 023208 0 BTB3X8 POT BOARD 01 72504 00 POTS RT33 J09 01203 05 20KB CONNECTORS CB31 13 22509 00 9PIN RS232 BOARD 01 72505 10 AH 01 72505 20 C RESISTORS R389 07 90750 01 75R 5 0805 R1 R313 07 10100 50 10R 1 6W 5 R314 07 10100 51 10R 1 4W 5 LINKS R390 21 06500 00 L 5mm CONNECTORS CZ704 CZ310 14 72508 00 UL2547 26AWG SCN...

Page 42: ...Switch A11 01101 03 RF 1003 BB2 CZ38 CB38 14 72503 03 UL2468 26AWG XHB 2 5A 3Y connector white L 300mm CB56 POWER SWITCH A14 72502 02 UL1672 18AWG VH 3Y connector red L 100mm CB49 CB54 14 72504 00 UL1015 14AWG black UL1015 16AWG red ǃwhite VH 3 96A 4Y connector L 130mm CZ36 TUNER 14 72017 10 FPC 180mm 17PIN CZ35 CZ702 14 72520 00 20pin 1 25mm L 600mm TRANSFORMERS T51 A18 72516 00 EE16 TUNERS TUNER...

Page 43: ...5 008 0405 92 Foot ASSY 87 010004 0 Foot ASSY Foot 75 010004 1 HS40 T973 B009V1 P006 Foot Pad J78 001002 0 HS40 C320 B009V1 P010 Accessory Relief Bushing A84 001002 0 SB4F 4 Cable Tie 84 001003 0 YJ 100 Cable Tie 84 047001 0 YJ 123 Wire Holder 84 041001 0 WCLA 1 Power Switch 78 000220 0 Φ22 Phone Jack 1 86 014001 0 15x5x0 3mm Expanded Rubber 86 018002 1 110x25x0 5mm Nonwavens B 86 018001 0 24x14x0...

Page 44: ...C N5 T 1mm Rear Panel AH 80 123003 0 SECC N5 T 1mm Rear Panel AH 65 123003 0 SECC N5 T 1mm Top Cover 67 123001 1 SECC N5 T 1mm PPG PCSC90103S 5 Fascia J70 123001 1 6063 T5 End cap L J70 123002 0 6063 T5 End cap R J70 123003 0 6063 T5 6HOI 7DSLQJ 6FUHZ 61 023106 0 STB3X6 6HOI 7DSLQJ 6FUHZ 61 084108 0 STPW4X8 Volume Knob 73 014002 2 Tone Knob 73 014001 2 Volume Knob Bezel 77 091003 2 Selector Knob 7...

Page 45: ...02 0 HS40 C725BEE B12V1 P004 Selector Knob Bezel 77 123003 0 HS40 C725BEE B12V1 P005 Duo Buttons 74 123001 1 ABS 765B Power Button 74 123003 1 ABS 765B POWER BUTTON BEZEL 77 123004 1 Clear PC UL 94V 0 Barcode Label 94 123002 0 C VERSION FOR C VERSION ONLY TI MAIN TRANSFORMER A18 72515 20 TD 230 0150B MAIN TRANSFORMER or A18 72515 40 ETO08060 MAIN TRANSFORMER or A18 72515 60 HA100B 0538 CB58 CZ58 A...

Page 46: ...ORD AMERICAN JA15 10121 16 LP 5W SPT 2 18AWG VH3 96 3PIN AC CORD AMERICAN or A15 10121 17 2UTJ2 NISPT 2 18AWG 2C VH3 96 3PIN AC Outlet A17 07002 10 JY0647A Rear Panel AH 67 123003 0 SECC N5 T 1mm Rear Panel AH 80 123003 0 SECC N5 T 1mm Rear Panel AH 65 123003 0 SECC N5 T 1mm Top Cover 67 123011 1 SECC N5 T 1mm TI Fascia J70 123011 1 6063 T5 TI End cap L J70 123012 0 6063 T5 TI End cap R J70 123013...

Page 47: ...22 S002 S009 P003 S005 S007 S005 C002 C013 C009 C008 C003 C004 C005 C006 C007 S015 S014 S016 S011 S012 S013 T001 C015 C016 R001 R002 R007 R005 R006 M005 S001 S002 M006 S002 S002 S019 C012 C014 R003 C725BEE E P DED VIEWS F016 F017 F016 R004 P001 P002 M001 M002 M003 M004 C011 C010 S003 S004 RS01 001 S006 S007 S005 S008 S014 S015 S016 S017 S008 ...

Page 48: ...or nob 1 F007 76 123001 0 VFD ens 1 F008 77 123003 0 Selector nob Be el 1 S001 61 023108 0 Self Taping Scre STB3 8 4 F009 77 123002 0 MP Button Be el 1 S002 61 023106 0 Self Taping Scre STB3 6 44 F010 77 123004 1 Po er Button Be el 1 S003 61 023206 0 Self Taping Scre BTB3 6 21 F011 77 123001 1 Plastic Subfascia 1 S004 61 023205 0 Self Taping Scre BTB3 5 18 F012 77 091003 2 Volume nob Be el 1 S005 ...

Page 49: ...T 1 2 90 005002 3 Non Woven Cloth 1 3 90 005001 0 Polybag 1 4 89 005002 5 Polyfoam End Cap 2 1 5 89 005001 6 Polyfoam End Cap 1 1 6 JA15 10121 16 or A15 10121 17 AC Cord AH AHT 1 JA15 02251 24 or A15 02251 25 AC Cord C CT 1 7 90 001013 0 AC Cord Polybag 1 8 J30 17250 00 Remote Control 1 9 30 22100 10 Batteries 2 10 88 123001 0A Carton Box 1 11 30 47250 00 and 30 47251 00 Instruction Manual 1 12 90...

Page 50: ...SERVICE MANUAL NAD 2008 C 725BEE STEREO RECEIVER NAD ELECTRONICS LTD TORONTO ...

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