NAD C-325-BEE Schematic

NAD

1

downloaded from http://receiverfaq.ru/

SERVICE MANUAL

C 325BEE

STEREO

AMPLIFIER

C 325BEE

STEREO

AMPLIFIER

WIRING DIAGRAM

8

AC POWER PLUG

AC OUTLET

T401(TRANSFORMER)

POWER SWITCH

CB45

CB47

Q215

P1-L

-46V WHITE
+46V RED

P2-L

Q214

P5-GND

Q114

P4-R

+46V RED

-46V WHITE

P3-R

Q115

MAIN BOARD

CB21

CB11

CB32

CB33

CB35

CB31

CB34

AMP-SMD-R BOARD

CZ11

AMP-SMD-L BOARD

CZ21

IN MODULE BOARD

01-32560-01

CB61

OUT MODULE BOARD

01-32560-02

CB61

CB51

CB55

POWER BOARD

CB58

CB52

CB53

CB54

CZ45

HEADPHONE BOARD

Ipod SOCKET BOARD

CZ75

CZ74

CZ72

IR BOARD

CZ73

STANDBY BOARD

CB73

CB74

S75

S74

KEY BOARD

S76

S71

S72

S73

S77

CZ72_1

CZ71

CB72

CB56

CB59

CB57

DISC L

9

DISC R

VIDEO L

VIDEO R

AUX L

AUX R

TUNER L

TUNER R

TAPE1 IN L

TAPE1 IN R

TAPE1 OUT L

TAPE1 OUT R

TAPE2 IN L

TAPE2 IN R

TAPE2 OUT L

TAPE2 OUT R

11,12,13,14)

RT31

RT32

RT34

SW31

SCR

CONTROL

CIRCUIT

TRIG I-V

ISC CIRCUIT

(IC43,TL082D)

(4,5,6,7

IC74
CD4094

BASS

TREBLE

BALANCE

TONE DEFEAT

MIRROR
CURRENT
SOURCE

CIRCUIT

R467

POSISTOR

(80 DEGREE C)

01-32560-02

(IC44,UPC1237HA)

R439

POSISTOR

(90 DEGREE C)

INPUT SELECTION

CIRCUIT (BY RELAY)

MP L

MP R

CD L

CD R

01-32560-01

IN

˄˅

AMP CIRCUIT

PREAPM MODULE

Relay Switchs

RL12/2

Speaker R

Speaker L

F1AA012V

92

IC 75
CD4094

OUT

˄˅

AMP CIRCUIT

PREAPM MODULE

MUTE

CONTROL

CIRUIT

PROTECTION

CIRCUIT

VOL+

5

4

VOL-

VOLUME CONTROL

CIRCUIT (REMOTE)

Q31

MUTE

Q32

MUTE

POWER AMP

CIRCUIT L

PRE-OUT L

PRE-OUT R

S41

SOFT CLIPPING

CONTROL CIRCUIT

RT33

VOLUME

CONTROL

BLOCK DIAGRAM

MAIN IN R

MCU

MCU

(1,2,3)

(1,3)

HEADPHONE

JK41

POWER AMP

CIRCUIT R

MAIN IN L

4

10

3

Vss

SDA5SCL6NC7Vcc

CIRCUIT

IR OUT

+5V

3

2

27pF

IC72

1

IS1U60L

C79

C710

27pF

IC71

24C01

NC1NC2NC

8

+5V

Y71

11.0592M

IR Flash

Mute Flash

Remote Mute Flash

IP
C
TA1
DI
TU
TA2
AU
VI

TO RELAY CONTROL CIRCUITTO VOL CONTROL CIRCUIT

CIRCUIT

IR IN

IC75

10

9

11
12
13
14

7
6
5
4

10

9

11
12
13
14

7
6
5
4

4094

IC74

4094

8

QS

VEE

QS

Q8
Q7
Q6

16

Q5

VCC

15

Q4

OE

+5V

3

Q3

CLK

2

Q2

D

1

Q1

STR

10

5

6

7

9

P3.48P3.5

GND

P3.3(INT1)

P3.2(INTO)

8

QS

VEE

QS

Q8
Q7
Q6

16

Q5

VCC

15

Q4

OE

+5V

3

Q3

CLK

2

Q2

D

1

Q1

STR

P3.711(AIN0)P1.012(AIN1)P1.113P1.214P1.215P1.416P1.517P1.618P1.719VCC

3

XTAL24XTAL1

Input selection

Keys

P3.0(RXD)2P3.1(TXD)

1

RST/VPP

20

IC73
AT89C4051

+5V

2

MICROPROCESSOR CONNECTION DIAGRAM

13

IC76
TCM810MEND

+5V

PHONE71
Ipod IN

Circuit

18V Power Supply

Sandby control line

10k

10k

10K

2K2

Q717

+5V

SCHEMATICS DIAGRAM

16

PREAMP CIRCUIT Vm1.2
PCB-1:MAIN BOARD Vm2.0

RCA31A

RCA31C

CD

RCA32A

RCA32C

RCA33A

RCA33C

RCA33E

RCA34A

RCA34C

RCA31B

RCA31D

CD

RCA32B

RCA32D

RCA33B

RCA33D

RCA33F

RCA34B

RCA34D

CB35

CON3

R31

470
R349

1M
R33

470
R351

1M
R35

470
R353

1M
R37

470
R355

1M
R39

470
R357

1M
R311

470
R337

1M
R313

470
R338

1M
R315

470
R339

1M
R317

470

R393

470
R394

1M

3
2
1

R396

470
R395

1M
R32

470
R350

1M
R34

470
R352

1M
R36

470
R354

1M
R38

470
R356

1M
R310

470
R358

1M
R312

470
R341

1M
R314

470
R342

1M
R316

470
R343

1M
R318

470

DISC

VIDEO

AUX

TUNER

TAPE2

REC2

TAPE1

REC1

Ipod-L

Ipod-R

DISC

VIDEO

AUX

TUNER

TAPE2

REC2

TAPE1

REC1

C314
100p

C31
100p

C33
100p

C35
100p

C37
100p

C39
100p

C311
100p

C313
100p

C315
100p

C317
100p

C304
100P

C305
100P

C32
100p

C34
100p

C36
100p

C38
100p

C310
100p

C312
100p

C316
100p

C318
100p

RL31B

RL32B

RL33B

RL34B

RL35B

RL36B

RL37B

RL38B

RL39B

RL39A

RL31A

RL32A

RL33A

RL34A

RL35A

RL36A

RL37A

RL38A

R345
220K

MF

LOW NOISE AMP

IN MODULE

R346
220K

MF

L-CH INPUTS

C319

0.1u 10%

1
2
3

CB32

4
5
6
7
8
9

R-CH INPUTS

C320

0.1u 10%

C324
47u/25

+18V

-18V

C323
47u/25

C325BEE RELAY CONTROL CIR.

D37

D38

D39

D310

D311

1N4148

1N4148

1N4148

1N4148

RL31C RL32C RL33C RL34C RL35C RL36C RL37C RL38C

DISC

CD

VIDEO

AUX

R391 560 1%

R392 560 1%

TONE DEFEAT SW

C301

10uF/50V

C325

47u/25

C321

0.1U

R319

N.I.

TONE DEFEAT SW

C326
47u/25

C322

0.1U

R320

N.I.

C325BEE TONE CONTROL CIR.

R325
390 MF

R321
3K3 MF

C327

63V

22n 5%

R363

51K

RT31A

TREBLE POTTREBLE POT

10KA

R323

750 MF

3K3 MF

R322

R324

750 MF

R402
10K

Q401

A1015

R403
1K

Q402

C1815

C329

0.1u 5%
63V

R327

180 MF

C328
22n 5%

C330

0.1u 5%
63V

R328

180 MF

OFF
ON

4u7/25V

SW31A

1

OFF

2
3

ON

R326
390 MF

R364
51K

RT31B

10KA

SW31B

4
5
6

+5V

VOLUME CONROL

RT33C

20KB

- +

M

C417

R406
1K

C303
220p

VR303

VR304

C418

4u7/25V

R407
1K

C302
220p

1N4148

R361

N.I.

30K

R362

N.I.

30K

Q403
A1015

Q404
C1815

TUNER

C335
N.I.

C336
N.I.

1N4148

5%,63V

C331 0.22u C333

63V

C332

0.22u 5%

C334

1u,63V,5%

D312

R329
1K5 MF

RT32A

1u,63V,5%

R331
390 MF

R330
1K5 MF

RT32B

BASS POT

10KA

R332
390 MF

R404
10K

R405
1K

BASS POT

10KA

LOW NOISE AMP

OUT MODULE

D313

1N4148

TAP2

RT33A

RT34A

CB33

RT34B

RT33B
20KB
VOLUME POT

VOLUME POT

20KB

20K MN

BALANCE POT BALANCE POT

20K MN

R448

100K

C434
22n/63V

D316

1N4148

TAP1

BY MOTOR

1
2
3
4
5
6
7
8
9

BY MOTOR

+18V

Q411

+18V

-18V

R451
330K

C337

0.1U

C339
1u/16

C338

0.1u

C340
1u/16

+12V

R489

100K

A1015

R435
390k

RL39C

-46V

CB31

TAP1

10

DISC

9

TAP2

8

TUNER

7

AUX

6

VIDEO

5

CD

4

+12V
IROUT
IRIN

220p

12V TRIG

Q31
K363

R389
10M

D315
1N4148

D314
N.I.

R390
10M

Q32
K363

+12V+12V

-46V-46V
+5V
+18V

-18V
Protection
Standby
Soft Cliping

Ipod

3
2
1

TO CZ72

PHONE1B

IR IN

PHONE1A

IR OUT

PHONE2

+12V Trigger

R347

C363

100K

100pF

R348

C364

100K

100pF

CB34

1
2
3
4
5
6
7
8
9

TO CZ71

RCA35A

L PRE-OUT

RCA35B

R PRE-OUT

+12V

+5V

RI510K

RI1 10K

RI6

VR301

100

R385

1.8

R386

1.8

VR302

100

D423

1N4148

10K

RI7

C362

330,5%

10n

RI3
33

R2
10

C3 0.1uF

R335

68

C343

220p

R333

4.7K

C344

R336

68

R334

4.7K

+5V

+18V

-18V

Soft Cliping
REMOTE MUTE
Standby
Protection

+5V

VOL­VOL+

QI1

2SC1815

Ipod

+5V

RI2

RI4

1K

4.7K

QI2

2SA1015

C345

0.1uF

C341

47u/25

C349 N.I.

R387

20K

R383

560 1%

R384

560 1%

R388

20k

C350 N.I.

C346 0.1uF

C342

47u/25

R436

56K

R457

220K

PREAMP IN/OUT MODULE BOARD Vm1.2
PCB-6/7:OUT/IN MODULE BOARD Vm1.0

CZ61

+18V

1

LOUT

2

LIN-

3

LIN+

4

GND

5

RIN+

6

RIN-

7

ROUT

8

-18V

9

CON9

C68

0.1u 20%

R621 30K

C611

Note:C611 is 43pF ON "IN MODULE"

75pF ON "OUT MODULE"

R62

220
R64
1M

C62
220p

C610
100p

R68
1K

Q62

2SK170

C67

0.1u 20%

R610
430 2%

C64
22p

D63

1N4148

D64

1N4148

R614
10K

Q65
A970

R612
1K

R617

C63
22p

D61

1N4148

D62

1N4148

R613
10K

Q63
A970

R611
1K

Q67
D667

R615

33

R61810R619

Q64
B647

10

C66

Q68

0.1u 20%

D667

R616

R620

33

10

10

Q66
B647

R61

220
R63
1M

C61
220p

C69
100p

R67
1K

Q61
2SK170

C65

0.1u 20%

R69
430 2%

SCHEMATICS DIAGRAM(1/4)

17

AMP CIRCUIT Vm1.4
PCB-1:MAIN BAORD Vm2.0

+46V

-46V

RCA35D

1
2
3

S41A

RCA35C

MAIN-IN R-CH

D410

20V

OFF

S41B

ON

D411

20V

MAIN-IN L-CH

22n 10% 63V

C219

47uF/25V

C119

R158

2.2k

R258

2.2k

C12/1

+46V

+37V

Q12/1
A1015

+12V

ISC Circuit:
It switch the power
supply to lower voltage
when the load
impedance is low, or the
temperature on the
heatsink is over 80C
degree

Over Heat Protection:
It shuts down the unit
when the temperature on
the heatsink is over 90C
degrees.
It also shuts down the unit
when the unit enters the
standby mode.

R427
22/1W FP

Q413
KSC2690

C419
10uF

R495
510

12V TRIG

+18V

Q414
C1815

Q423
C2240

+18V

STANDBY

R438
22K

R439
T0=90 degree C
POSISTOR

R483

270K

RL12/1
F1AA012V
O/P RELAY

5 6

3 4

1 2

D412

1N4148

R437
47K

D43
1N4148

D42
1N4148

+18V

C443

0.1uF
Q422
D667

R494
12

C446
10uF

C429

10u/25V

R477

47K

R473
43K

C426

10u/25V

D431

3.6V

R428
2K2

C49

47u/25V

C411

0.1uF

R429
5K1

C410

47u/25V

C412

0.1u

-18V

+18V

R474 1K

C430
10u/25V

R472
470K

8

6

5

IC43B
TL082D

4

R476
1K

-18V

ISC CIRCUIT

R446

R445

56K

56K

R12/2
22K

1

Q412

0V

C1815

2

0V

0V

0V

C422

330u/16V

PROTECTION CIR.

SUPPLY CIR.

D49
18V

R414
2K2
MF

STANDBY

R413
680

R412
2K

MF

7

D418
1N4148

C431
10u/25V

R490

100K

R491

100K

1N4148

+3.25V

+2.16V

8

345

R471
10K

D420

+46V

C432

0.22u

R411

680

C41

0.1uF

R410

680

C48
10u/25V

R441

4.7K

R442
56K

7

IC44
UPC1237HA

R401

4K7

D417
1N4148

C420
100u/16V

+2.0V

Q41

R45

2SC2690

C46

22p

C428
10u/25V

+18V

C45
22p

Q43
C1815

Q44
A1015

Q42
2SA1220

C425
10u/25V

2

3

220/2W FPR452

220/2W FP

R440
2K2

R443
150 1/2W FS

33/0.5W FS

C413

220u/35V

R47
680

R48

680

C414
220u/35V

R46

33 / 0.5W FS

R482
4K7

R478

100K
R479

100K

R480
3K9

R OUT

L OUT

C47
47u/25V

R49

680

D403

1N4148

R470

TP10

10K

1

IC43A
TL082D

TP11

R487

18K

R488

18K

D419
1N4148

R453

6

C421
4u7/50V

+37V

R41
680

R43

680

C43

220u/63V

C44

220u/63V

R44

680

R42
680

R493
180k

VR3
10K

+18V

CB45

CZ45

1

1

2

2

3

3

4

4

5

5

R454

100,2W

+18V

C445

100uF

C444

4700uF/16V

D430

-37V

I-V
AC DET.
ISC TRIG

+18V

D428

R469

R468

1N4148

10K

22K

Q421

C1815

R467
T0=80 degree C

BINDING POSTS

4

3

2

1

N8C320D03

JK41

PHONES SOCKET

R455
100,2W

C325BEE HEADPHONE BOARD Vm1.2
PCB-10:HEADPHONE Vm1.0

STANDBY

Protection

Soft Cliping

+5V
+18V

-18V+5V
+12V

-18V

-46V

+12V

-46V

Standby

DB104

SPKOUT

+5V

2

IC45

1

AMS1117-5.0

3

*

CB47

1
2
3
4
5
6
7

7PIN

R130

82/1W FS

R169
1M2

+18V

R154
10

C13
10u/35V

C12

1nF

10u/35V

R155
10

R149
68,1/4 1% MF

R254
10

C22

1nF

10u/35V

R255
10

R249
68,1/4 1% MF

39k,MF,5%

39k,MF,5%

C14

-18V

+18V

C23
10u/35V

39k,MF,5%

39k,MF,5%

C24

-18V

R110

R210

C11

R11

470

R12
220K

A1015

R420

36K

4
5
6

R421

36K

C1815

R21

470

R22
220K

10u/16V

C17

0.1uF/63V

Q47

Q48
C1815

10u/25V

10u/25V

R419
100

C415

C416

R417
100

Q45

A1015

C27

0.1uF/63V

C21
10u/16V

R25
22K

R418
100

R422

1.3K

R424

1.3K

R425

1.3K

R423

1.3K

R416
100

Q46

+18V

R14

100

-18V

R15
22K

SOFT CLIPING CIR.

+18V

R24

100

-18V

CZ11

CZ11

8

8

7

7

6

6

5

5

4

4

3

3

2

2

1

1

CON8

CON9

CZ21

CZ21

8

8

7

7

6

6

5

5

4

4

3

3

2

2

1

1

CON8

CON9

39K,MF,5%

R101

Q103
C3324-GR

R119

220k,MF,5%

220k,MF,5%

220k,MF,5%

220k,MF,5%

R103

R106

Q104

A1312-GR

Q203
C3324-GR

R203

R206

Q204

A1312-GR

82,MF,5%

82,MF,5%

82,MF,5%

82,MF,5%

82,MF,5%

Q16

A1015

C18

39p

Q18

2SB647

Q19

C19

2SD667

39p

Q17
C1815

R120
82,MF,5%

P/N: 01-32520-02

AMP-SMD MODULE R CHANNEL Vm1.4

PCB-5:AMP-SMD-R Vm1.0

R219
82,MF,5%

Q26

A1015

C28

39p

Q28

2SB647

Q29

C29

2SD667

39p

Q27
C1815

R220
82,MF,5%

P/N: 01-32520-01

AMP-SMD MODULE L CHANNEL Vm1.4
PCB-4:AMP-SMD-L Vm1.0

R121

100K,MF

R123

D14

1N4148

C124

R169

R221

100K,MF

R223

D24

1N4148

C224

R269 330

D13
1N4148

47K

D23
1N4148

47K

D15
1N4148

D16

1N4148

R122

100K,MF,5%

1nF

330

D25
1N4148

D26

1N4148

R222

100K,MF,5%

1nF

C103

22uF/16V

R111
100,MF,5%

Q12

A1312-GR

Q13

C3324-GR

R112

100,MF,5%

22uF/16V

22uF/16V

R211
100,MF,5%

Q22

A1312-GR

Q23

C3324-GR

R212

100,MF,5%

22uF/16V

C104

R159 100,5%

L12 100uF

C203

C204

R259 100,5%

L22 100uF

Q101

C3324-GR

Q14
C3324-GR

R115
15

R116
15

Q15
A1312-GR

Q102

A1312-GR

R105

39k,MF,5%

39K,MF,5%

R201

Q201

C3324-GR

Q24
C3324-GR

R215
15

R216
15

Q25
A1312-GR

Q202

A1312-GR

R205

39k,MF,5%

R102

R104

R202

R204

R19

R29

C15
220uF/63V

D102
1N4148

D103
1N4148

C16
220uF/63V

R131

82/1W FS

R230

82/1W FS

R269
1M2

C25
220uF/63V

D202
1N4148

D203
1N4148

C26
220uF/63V

R231

82/1W FS

R162
1K

R262
1K

D101
1N4148

R163
1K

Q117
2SA970

Q118

2SC2240

C123

0.1uF

R168
1K

D201
1N4148

R263
1K

Q217
2SA970

Q218

2SC2240

C223

0.1uF

R268
1K

POWER AMP CIR. L

3K3/2W FP

330/0.5W FP

R164

R165

10K

10K

R166
5K6

IC11

AZ431

R167
1K

POWER AMP CIR. R

R264

R265

10K

10K

R266
5K6

IC21
AZ431

R267
1K

KSA1220

Q110

Q111

KSC2690

330/0.5W

R126

R132

3K3/2W FP

R128

R124

3.3/0.5W FP

D11

4.7V

C110
47u/25V

D12

4.7V

C111
47u/25V

R125

R137

3.3/0.5W

R129

R127

R133

3K3/2W FP

3K3/2W

R226

R232

3K3/2W

3K3/2W FP

R228

330/0.5W FP

R224

3.3/0.5W FP

Q210
KSA1220

C210

47u/25V

C211

47u/25V

Q211

KSC2690

R225

R229

3.3/0.5W

FP

330/0.5W

R233
3K3/2W FP

R227
3K3/2W

R237

10

470p,100V,20%

R138

430

FS

10

470p,100V,20%

470p,100V,20%

D21

4.7V

R238

430

D22

4.7V

FS

470p,100V,20%

R142
22,MF,5%

R107

39,MF,5%

C112

R136

Q112

10

FS

KSC2690

TP3

VR12

R144

200

0.068/3W CE

C127

N.I.

R145

0.068/3W CE

Q116

KSC2690

TP4

R139
412

Q113
KSA1220

C113

R108
39,MF,5%

R143
22,MF,5%

R242
22,MF,5%

R207
39,MF,5%

C212

R236

Q212
KSC2690

FS

10

TP1

VR22

R244

200

0.068/3W CE

C227
N.I.

R245

0.068/3W CE

Q216
KSC2690

TP2

R239
412

Q213
KSA1220

C213

R208
39,MF,5%

R243
22,MF,5%

Q115

Q114
2SA1943

2SC5200

Q214
2SA1943

R148

15K

R147

1K

R146
1K8,1W,1%,MF

D27

1N4148

R248

15K

R247
1K

C220

22n 10%

63V

R246
1K8,1W,1%,MF

Q215

2SC5200

D17
1N4148

C120
22n 10%

-46V

+46V

-46V

C115

0.1u

C215

0.1u

C114

0.1u

R12/1
6K8

R152
22K

Q11
C1815

R156
470K

3

2

IC41A
TL082D

R157
470K

C214

0.1u 10% 63V

R252
22K

Q21
C1815

R256
470K

5

6

IC42B
TL082D

R257
470K

R151

10/1W FS

L11

0.5uH

R251
10/1W FS

0.5uH

R250
1/1W FP

R150
1/1W FP

L21

C118

0.1u 10% 63V

R160

48

1K,5%

R161

1K,5%

1uF,63V,5%

R260

48

1K,5%

R261

1K,5%

1uF,63V,5%

C121
1uF,63V,5%

1

C122

C218

0.1u 10% 63v

22n 10% 63V

C221
1uF,63V,5%

7

C222

-18V

+18V

-18V

+18V

P5-GND

-46V+46V

P3-RP4-R

-46V+46V

P1-LP2-L

SCHEMATICS DIAGRAM(4/4)

18

C325BEE IR BOARD Vm1.0
PCB-11:IR BOARD Vm1.0

P9

IC72

IS1U60L

SHIELDING

S78 STA NDBY

RED GREEN

CZ73

1

2

12345

CB73

R71
330

+5V

+12V

R701
2K2

R766

4.7K

3 4

VCC

3

2

R72
470

C1815

Q73

C1815

1

SIGNAL

5

Q74

GND

IR RECEIVER

C325BEE STANDBY BOARD Vm1.0
PCB-8:STANDBY BOARD Vm1.0

POWER/PROTECTION IND.

D717

513AW

Q72

C1815

CZ76

R730
15K

3

1 2

D715
1N4148

D718
1N4148

CB72

CON3

PROTECTION

IPOD BAORD Vm1.0
PCB-9:IPOD BOARD Vm1.0

Ipod GREEN

R759

D719

TP701

C760

C758
PHONE71
Ipod IN

TO MAIN BOARD CB35

+5V

R703

2K2

Q717
2SC1815

R764
10K

R725
2K2

2k2

D716
GREEN

C721

Q718

10nF

C1815
R760
4k7

+5V

+12V

SOFT CLIPING

+12V

+5V

G

R

123

100p

L

CZ75

TAPE1
DISC
TAPE2
TUNER
AUX
VIDEO
CD
+12V
IR OUT
IR IN

SOFT CLIPING
REMOTE MUTE

PROTECTION

+5V
VOL­VOL+

IPOD

C759

100p

0.1uF

CZ74

CB74

123

123

4

4

CZ76

TO CB31

CZ71

TO CB34

1
2
3
4
5
6
7
8
9
10

9
8
7
6
5
4
3
2
1

+5V

C78

0.1u

IC73

20

VCC

19

P1.7

18

P22

P1.6

17

P21

P1.5

16

P20

P1.4

15

P1.2

14

P02

P1.2

13

(AIN1)P1.1
(AIN0)P1.0

P01

12

P00

11

D73
VIDEO

VIDEO AUX TAPE2 TUNER DISC TAPE1CD

C714

Q79

10n

C1815
R741
4K7

R749

4K7

AU

C715
10n

R742
4K7

C724

C725

N.I.

C716
10n

R757
10K

R743
4K7

N.I.

S76

TAPE2

C717
10n

R744
4K7

S75

DISC

S74

TAPE1

+12V

D714

1N4148

R727
2K2

D72

D74

TUNER

C718
10n

R745
4K7

TAPE1

GREEN

Q713
C1815

R753

4K7

C

GREENGREEN GREEN GREEN

Q712
C1815

R752

4K7

DI

S77

CD

R756
10K

D76
TAPE2

Q711
C1815

R751

4K7

TU

R763
10K

R758
10K

+5V

D71
AUX

Q710
C1815

R750

4K7

TA2

C719
10n

R746
4K7

TA1

S73

VIDEO

S72

TUNER

S71

AUX

R754

4K7

Q714
C1815

D77
CD
GREEN

R726

2K2

C720
10n

R747
4K7

R761

4K7

IP

C723

100uF/16V

R762

10K

R702

10K

D75
DISC

AMBER

Q715
C1815

C71

100u/16V

+5V

+5V

0.1u 20%

8

IC75
4094

10

IR BLINK

MUTING BLINK

Q716
C1815

+5V

C77
10n

IC71

1
2
3

+5V

C711

VEE

R733
5K1

NC
NC
NC
Vss4SDA

24C01

16

15

VCC

8

Vcc

7

NC

6

SCL

5

C722

N.I.

C79
27p

3

2

1

D

OE

STR

CLK

Q14Q25Q36Q47Q514Q613Q712Q811QS9QS

VOL+

VOL-

3
2
1

R73 10K

D710

1N4148
D711

1N4148

D712
1N4148

D713
1N4148

REMOTE MUTE

IR IN

IR OUT

C72

0.1uF

+5V

R708

10K

Y71

11.0592MHz

C710
27p

8

VEE

10

CVITU

IP

2

IC76

R765

TCM810MENB

N.I.

1 3

1

RST/VPP

2

P3.0(RXD)

3

P3.1(TXD)

4

XTAL2

5

XTAL1

6

P3.2(INTO)

7

P3.3(INT1)

8

P3.4

9

P3.5
GND10P3.7

AT89C4051

C712

0.1u 20%

16

3

2

15

1

IC74

D

OE

4094

STR

CLK

VCC

Q14Q25Q36Q47Q514Q613Q712Q811QS9QS

R748

4K7

TA2

TA1

DI

VI

AU

KEY BOARD Vm1.2
PCB-3:KEY BOARD Vm1.0

SCHEMATICS DIAGRAM (3/4)

19

POWER CIRCUIT Vm1.2
PCB-2:POWER BOARD Vm2.0

RED

WHITE

RED

WHITE

CB54

CB52

CB58

CB53

2
1

2
1

2
1

1
2
3
4
5
6
7

+46V

-46V

TRIG
AC DET.
I-V
+37V

-37V
~8V

0V

R531

0.05/3W 5% CE

A1015
Q510

R533

R567

1M

330K

+46V

-46V

R532
220

Q59
A1015

R534
2K2

R566

4K7

R562
1K

D531

TIC116D

R561

100

Q517
A1015

Q519
A1015

C1815
Q520

C517

C518

R565

100
R564

22K

D513

1N4004

15000uF/50V 10%

15000uF/50V 10%

Q518
C1815

R563
22K

R558
1K

D532
TIC116D

R544

22K

R560

1K
R559

1K

D55

KBU8D

NAD C325BEE POWER CIR.

!!

C52

D51
KBU8D

C523

3300u/50V

C524
2200u/50V

10n/250V

10%

C51

10n/250V

10%

+37v

D56
DB104

-37v

F51F52 F54 F53

F55

500mA/250V

6.3A/250V X4

C54

0.47uF

C53

4.7nF/400V

36.4V

36.4V

28.5V

28.5V

CB55

CZ55

3

3

2

2

1

1

CON3

CB56

1
2
3

CON3
CB59

1
2
3

CON3
CB57

3

1

CON3

CB51

1
2

0V

3
4
5

8V

6

0V

7

CON7

CZ56

1
2
3

CON3
CZ59

3
2
1

CON3
CZ57

1
2
3

CON3

CZ51

7
6
5
4
3
2
1

CON7

AC POWER CORD

POWER SWIT CH

SW52

1

2

AC outlet

T401

RED
VIO
BLK
ORG
GRY

!

1

(For AH version)

2

!

Transformer