NAD C 326BEE, Service Manual

16

SCHEMATIC DIAGRAM 

MAIN BOARD (1)

ipod-L

ipod-R

DISC

CD

VIDEO

AUX

TUNER

TAPE

TAPE OUT

MP

TONE DEFEAT SW

OFF

ON

ON

OFF

TONE DEFEAT SW

IN MODULE

OUT MODULE

TONE CONTROL L/CH

L PRE-OUT

R PRE-OUT

IR IN

IR OUT

TONE CONTROL R/CH

80 degree: 330 ohm max.
90 degree: 470 ohm min.

IN MODULE

OUT MODULE

L

R

R

L

R

L

R

L

R

L

R

L

R

L

R

L

SUBWOOFER OUT

VOLUME BOARD

R101

470

R102

1M

R104

1M

R103

470

R107

470

R108

1M

R106

1M

R105

470

R116

1M

R115

470

R111

470

R112

1M

R114

1M

R113

470

R109

470

R110

1M

R310

1M

R309

470

R313

470

R314

1M

R312

1M

R311

470

R315

470

R316

1M

R305

470

R306

1M

R308

1M

R307

470

R303

470

R304

1M

R302

1M

R301

470

1

2

3

J505B

TO KEYBOARD J505A

R117

470

R118

1M

R318

470

R317

1M

C101
100P

C102
100P

C104
100P

C103

100P

C107
100P

C108
100P

C106
100P

C105

100P

C109

100P

C309
100P

C305
100P

C306
100P

C308
100P

C307
100P

C303
100P

C304

100P

C302
100P

C301

100P

R119
120K
MF

R319
120K

MF

C111

47U
25V

C311

47U
25V

R120

560

1%

R320
560
1%

D101

1N4148

D102

1N4148

D103

1N4148

D104

1N4148

D105

1N4148

D106

1N4148

D107

1N4148

D108

1N4148

C112

47U 25V

C113

0.1U

R121

3K3

MF

R123

750

MF

R122
N.I

R124

390

MF

C114

22N
63V
5%

R126

51K

C115

0.1U
63V
5%

R125
180

MF

R127

N.I

12

3

VR101

30K

C116

0.22U

63V

5%

C117

1U

63V

5%

R128
1K5

MF

R129
390

MF

C118

0.1U

C119
1U16V

C319

1U16V

C318

0.1U

R329
390
MF

R328
1K5

MF

C317

1U

63V

5%

C316

0.22U

63V

5%

1

2

3

VR301

30K

R327

N.I

R325
180
MF

C315
0.1U

63V
5%

R326

51K

C314

22N
63V

5%

R324

390
MF

R322
N.I

R323

750

MF

R321

3K3

MF

C313

0.1U

C312

47U 25V

Q103

MMBT5551

E

C

B

Q102

MMBT5401

R170

10K

R171

10K

R169

10K

C138
0.01u

R168
330
5%

R173
4.7K

R172
1K

R174
33

C139
0.1U

R175

47

C121

47U 25V

C120

0.1U

C122

N.I

R130

20K

R131

560 1%

R331

560 1%

R330

20K

C322

N.I

C123
N.I

C323
N.I

R134

68

1

2

3

VR102
100

R132

1.8

R332

1.8

1

2

3

VR302

100

C320

0.1U

C321

47U 25V

R133

4.7K

C124
N.I.

Q101

MMBF5434

R136
10M

R135

100K

C125

100P

C325

100P

R335

100K

R336
10M

Q301

MMBF5434

C324

N.I.

R333
4.7K

R334

68

E

C

B

Q322
3906

Q321

3904

C343

10U
50V

R368
10K

R369
1K

C342

4U7 25V

C341

4U7 25V

R370

1K

R371
1K

Q319
3904

E

C

B

Q320

3906

C340

220P

C339

220P

R372

10K

R373

1K

E

C

B

Q318

MMBT5401

R374

100K

C338

22n
50V

R375

330K

R376
390K

R377

100K

R378

220K

Q311
2SK932

R365

10

Q313

MMBT5087

Q317

MMBT5401

Q314

MMBT5551

R366

10

R367

10

R364

4K7

R361 1K

C334 33P

R356 1K5

C333 220P

C335

0.1U

20%

R355
220

C3370.1U

4

5

6

RT102-B

10KA

BASS POT

1

2

3

RT102-A

10KA

BASS POT

4

5

6

RT101-B

10KA

TREBLE POT

1

2

3

RT101-A

10KA

TREBLE POT

4

5

6

RT103-B

20KMN

BALANCE POT

1

2

3

RT103-A
20KMN

BALANCE POT

4

6

8

RL101-A

13

11

9

RL101-B

1

16

RL101-C

4

6

8

RL102-A

13

11

9

RL102-B

1

16

RL102-C

4

6

8

RL103-A

13

11

9

RL103-B

1

16

RL103-C

4

6

8

RL104-A

13

11

9

RL104-B

1

16

RL104-C

4

6

8

RL105-A

13

11

9

RL105-B

1

16

RL105-C

4

6

8

RL106-A

13

11

9

RL106-B

1

16

RL106-C

4

6

8

RL107-A

13

11

9

RL107-B

1

16

RL107-C

4

6

8

RL108-A

13

11

9

RL108-B

1

16

RL108-C

Q316

MMBT5551

R358

430 1%

R363

1K

R362

1K

E

C

B

Q315 MMBT5551

Q312

MMBT5087

R359

470

R360

470

C336 1N

C136 1N

R160

470

R159

470

Q112

MMBT5087

E

C

B

Q115

MMBT5551

R162 1K

R163

1K

R158

430 1%

Q116

MMBT5551

C137

0.1U

R155
220

C135

0.1U

20%

C133

220P

R156 1K5

C134 33P

R1611K

R164

4K7

R167

10

R166 10

Q114

MMBT5551

Q117

MMBT5401

Q113

MMBT5087

R165

10

Q111
2SK932

3

2

4

RL109-A

12VDC

8

9

7

RL109-B

12VDC

1

10

RL109-C

12VDC

R137

10K

R337

10K

R140

10K

3

+

2

-

1

U101-A
NJM4560

5

+

6

-

7

U101-B
NJM4560

8

4

U101-C

NJM4560

R139

11K

C326
0.068u

C126

0.33u

R339

100

Q302

N.I.

R341

10M

C127

100p

R138

100

R338

100

R340

11K

D109

1N4148

Location 58

90 degree

1

2

3

4

R296-A

VOLUME POT
20KB

5

6

7

8

R296-B
VOLUME POT
20KB

9

10

R296-C

VOLUME POT

20KB

Q104
2SK932

R152

10

Q106

MMBT5087

Q110

MMBT5401

Q107

MMBT5551

R15310

R154

10

R151

4K7

R148 1K

C129 33P

R143 1K5

C128 220P

C130

0.1U

R142
220

C132

0.1U

Q109

MMBT5551

R145

430 1%

R150

1K

R149 1K

E

C

B

Q108

MMBT5551

Q105

MMBT5087

R146

470

R147

470

C131 1N

C331 1N

R347

470

R346

470

Q305

MMBT5087

E

C

B

Q308

MMBT5551

R349

1K

R350

1K

R345

430 1%

Q309

MMBT5551

C3320.1U

R342
220

C330

0.1U

20%

C328

220P

R343 1K5

C329 33P

R348 1K

R351

4K7

R354

10

R353

10

Q307

MMBT5551

Q310

MMBT5401

Q306
MMBT5087

R352

10

Q304
2SK932

R141

11K

21

25

M103-A

1

5

4

M103-B

C195 22p

R298

68

C395 22p

R498

68

C196 22p

R300

68

C396 22p

R500

68

1

2

3

M105-A

4

5

6

M105-B

7

8

9

M105-C

1

2

3

M106-A

4

5

6

M106-B

7

8

9

M106-C

1

2

3

M107-A

4

5

6

M107-B

4

5

6

M109-B

1

2

3

M108

1

2

3

M104

+12V TRIGGER

C398 33p

C198 33p

C399 33p

C199 33p

1

2

3

4

5

6

J507B

TO KEYBOARD J507A

1

2

3

4

5

6

7

J506B

TO KEYBOARD J506A

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

J201B

TO VOLUME BOARD J201A

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

J201A

TO MAIN BOARD J201B

R709

2.2M

R809

2.2M

R710

2.2M

R810

2.2M

C110

0.1u 63V

C310

0.1u 63V

R176

4.7K

C211 47P

C212

10P

R177

4.7K

C213
470P

Q158

MMBT5551

R714

82K

R713 100K

C215

1u

Q358

MMBT5551

R813100K

R814 82K

C415

1u

R715100K

Q159

MMBT5551

R716 82K

C216

1u

R815100K

Q359
MMBT5551

R816 82K

C416

1u

Q101A
N.I.

Q301A
N.I.

Q302A
2SK364

C221 47P

R820

220K

R720

100K

R722
390K

R819

330K

C327

22n
50V

R719

100K

E

C

B

Q161

MMBT5401

R821

10K

Q361

MMBT5551

R721

4K7

1

2

J508B

TO HP BOARD J508A

Q162

MMBT5551

R723

4K7

R823

10K

1

2

3

4

5

6

7

8

9

10

J501B

TO KEYBOARD J501A

R379

AH - 90 deg thermal SW
CE - N.I.

1

2

J106A

1

2

J106B

1

2

J306A

1

2

J306B

D307

1N4148

D306

1N4148

D308

1N4148

+18V

-18V

+12V

RELAY-CONTROL

+12V

MPF

+5V

12V_TRIG

+5V

+18V

-18V

+5V

-46V

+18V

MPF

+18V

-18V

VI

AU

TA

TU

DI

C

MPR

MPR

+12V

+5V

PROTECTION

STANDBY

SOFT_CLIPPING

DI

C

VI

AU

TU

TA

TONE_DEFEAT

RELAY

+22V

TONE_DEFEAT

ROUT-I

RIN-I

RIN+I

LIN+I

LIN-I

LOUT-I

+18V

-18V

+18V

LOUT-O

LIN-O

LIN+O

RIN+O

RIN-O

ROUT-O

-18V

LOUT-O

LIN-O

LIN+O

RIN+O

RIN-O

ROUT-O

-18V

+18V

LOUT-I

LIN-I

LIN+I

RIN+I

RIN-I

ROUT-I

-18V

+18V

R_PRE-OUT

R_PRE-OUT

DGND

DGND

DGND

DGND

DGND

DGND

DGND

DGND

DGND

MUTE

DGND

+5V

VOL-

VOL+

THRM_SEN

+12V

TONE_DEFEAT

J201-4

J201-6

J201-6

J201-8

J201-8

J201-10

J201-10

VOL+

DGND

VOL-

+5V

J201-4

J201-4

+12V

TONE_DEFEAT

J201-6

J201-8

J201-10

VOL+

DGND

VOL-

+5V

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

+18V

-46V

DGND

DGND

DGND

DGND

MUTE

DGND

DGND

IR_OUT

IR_IN

Exploded View -B

Note:  SMD parts

Note:  SMD parts

Bottom Side PCB

Bottom Side PCB

Bottom Side PCB

Bottom Side PCB