Onkyo TXSR-756 Schematic

TX-SR576

http://receiverfaq.ru/

A

BLOCK DIAGRAMS-1

AUDIO SECTION

1

SETUP MIC

AUX IN

(FRONT IN)

CD IN

2

TAPE OUT

TAPE IN

CABLE/SAT IN

VCR/DVR OUT

3

DVD

(MULTI IN)

4

DIGITAL IN

5

HDMI

VCR/DVR IN

FRONT

CENTER

SUBWOOFER

SURROUND

SURROUND BACK

1

COAXIAL

OPTICAL

(DVD)

2

(CBL/SAT)

1

(VCR/DVR)

2

(CD)

Refer to

BLOCK DIAGRAMS-2

IN1

IN2

IN3

OUT

BCDEFGH

AUDIO ANALOG

NC

138

135

137

FRONT L

FRONT R

AUDIO DIGITAL

M12L64164A-7TG

Q201

DSP

120

TC74VHCT157FT

MULTIPLEXER

PREOUT

SUBWOOFER

L

ZONE 2

LINE OUT

R

Q281

SDRAM

141

139

Q202

POWER AMPLIFIER

+29dB

Z2MUT

AMUT

FRL

SBMUT

INTERFACE

Z2RL

SBRL

CSRL

RI

MPD70F3746

MAIN MICROPROCESSOR

Q6601

Q6602

Q6603

Q6604

Q701

RL6602

RL6603

RL6604

RL6607

RL6600

L

SPEAKERS

R

L

SURROUND

SPEAKERS

R

L

SURROUND BACK

R

L

SPEAKERS

R

RI

PHONES

FRONT

CENTER

SPEAKER

SPEAKERS

ZONE 2

TUNER UNIT

MIC AMP

MICDET

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

R

L

NC

R

SPDIF

I2S(DVD-AUDIO)/DSD

40

57

MAIN L

58

63

64

65

66

61

62

59

60

55

56

53

54

51

52

49

50

47

48

45

46

71

72

69

70

67

68

MAIN R

SUB R

SUB L

36

37

74

INVERTING

25k25k

35

73

25k25k

34

75

25k

30

25k25k

78

33

25k25k25k

77

32

76

25k

31

25k25k25k25k25k

80

NC

29

C

37

36

CS42518

79

28

Q402

NJM45800-D

Q301

LPF

SW

34

35

REC R

REC L

38

39

LPF

Q401

NJM45800-D

FL

32

33

FR

16 15 14

13

-

49 43 42 44 46 45 48 47

50

2ch ADC

DIR

31

30

SELECTOR / TONE / VOLUME

SL

28

29

8ch DAC

R2S15211FP

LPF

Q403

NJM45800-D

Q5501

SR

27

26

TONE

22

SBL

23

LPF

Q404

NJM45800-D

21

SBR

FL

19

20

+

FR

17

18

C

7

6

+++++

SL

14

15

SR

12

11

SW

9

10

SBL

4

5

+

SBR

2

1

+

20

62 63 64

1

61 60 54

MUTING

Q5606 NC

NC

Q5605

NC

Q5607

NC

Q5609 Q5608NC

ES29LV160ET-70TG

117 116 115 113

I2S(DIR_CLK)

I2S(DVD-AUDIO_CLK)

Q5610

FLASH MEMORY

(DSP ROM)

Q5600

Q5604

Q5603

Q5602

Q5601

I2S(DVD-AUDIO_DATA)/DSD

Q282

D788E001BRFP266

TX-SR576

A

BLOCK DIAGRAMS-2

VIDEO / HDMI SECTION

1

2

HDMI

IN 3

IN 2

IN 1

TMDS

CEC DDC

+5V

HP DET

TMDS

CEC DDC

+5V

HP DET

TMDS

CEC DDC

+5V

HP DET

TMDS3 CEC DDC3 RPWR3 HPD3

TMDS2 CEC

DDC2 RPWR2 HPD2

TMDS1

CEC DDC1 RPWR1 HPD1

Y

BCD

NAHDM-9565

HDMI

CEC

I2S

I2C

Digital Video

S/PDIF

Q8401

SII9034CTU

HDMI

TRANSMITTER

TMDS

TMDS CEC DDC +5V HP DET

OUT

PWR5V

HPD

DDC

I2C

Q8162

SII9185

HDMI SW

I2C CEC

TMDS DDC

RPWR

Q8501

SII9013

HDMI

RECEIVER

NAVD-9467

3

4

5

IN 1

CB

CR

VIDEO INPUT

COMPONENT

IN 2

CB

CR

DVD

VCR/DVR

CBL/SAT

COMPOSITE

VIDEO INPUT

NC

AUX

(FRONT)

DVD

VCR/DVR

INPUT

S VIDEO

CBL/SAT

NC

Y

Q3001

AN15880A-VT

VIDEO SWITCH

PY

6dB

PB

6dB

PR

6dB

DRV

Y

CB

CV

4/6dB

C

Y

SY

YC

C

Y

S3S4S5

S6

S2

S1

4/6dB

6dB

SC

4/6dB

S7

S8

MUTE

DRV

COMPONENT

CR

VIDEO OUTPUT

MONITOR

VCR/DVR

C

Y

COMPOSITE

VIDEO OUTPUT

MONITOR

S VIDEO

Y

C

VCR/DVR

OUTPUT

TX-SR576

A

SCHEMATIC DIAGRAMS-1 (SD-1)

AUDIO INPUT SECTION

1

RI

P7900

NC

P7901

R

TUNER

L

P7902

R

CD IN

L

2

R

OUT

L

TAPE

R

IN

L

3

P7904

OUT

FRONT

CENTER

LIST

BACK

R

L

R

L

R

IN

L

P7905

R

L

R

L

P7906

R

L

CBL/SAT IN

VCR/DVR

4

SURROUND

DVD

(MULTI IN)

5

SUBWOOFER

D

SURROUND

P5505

R5519

R5520

R5521

R5522

R5523

R5524

R5525

R5526

R5501

R5502

R5503

R5504

R5505

R5506

R5507

R5508

R5513

330

R5514

330

R5515

2.2K

R5516

2.2K

R5517

330

R5518

330

R5500

330

2.2K

330

R5541

220K

R5542

220K

R5543 220K

R5544

220K

R5545

220K

R5546

220K

R5547

220K

R5548

220K

R5553

220K

R5554

220K

R5555

220K

R5556

220K

R5557

220K

R5558

220K

R5559

220K

R5560

220K

R5561

220K

R5562

220K

R5563

220K

R5564

220K

R5565

220K

R5566

220K

MICROPROCESSOR PCB

To NADG-9462

SD-3 : H4

P304

C5501

221J

C5502

221J

C5503

221K

C5504

221K

C5505

NC

C5506

NC

C5507

221J

C5508

221J

C5513

221J

C5514

221J

C5515

NC

C5516

NC

C5517

221J

C5518

221J

D5704

221J

C5704

D5714

C5519

221K

C5520

221K

C5521

221J

C5522

221J

D5705 C5705 221J

D5715

C5523

221J

C5524

221K

C5525

221J

C5526

221J

D5706

C5706 221J

D5716

BCDEFGH

NC

JL5502A

1

2345678

XM_L

XM_R

iPOD_R

iPOD_L

220K

R5580

R5581

220K

R5582

R5549

R5550

GND_A

SIRIUS_L

220K

R5583

SIRIUS_R

220K

+15V

9

-15V

P303

R5575

220K

R5576

220K

R5577

47K

R5578

47K

R5579

220K

R5587 10K

R5588 10K

MICROPROCESSOR PCB

To NADG-9462

SD-3 : H3

1

456

2

3

7

TU_R

GND_TU

V3_L

GND_A

64 63

62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41

R5589

8

V3_R

MIC OUT

65

INRB/RECR2

INL8 INR8 INL7 INR7 INL6 INR6 INL5 INR5 INL4 INR4 INL3 INR3 INL2 INR2 INL1 INR1 AVEE CLOCK DATA

MONO39SUBL

40

1K

RI

TU_L

NOTE

THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY REPLACE ONLY WITH PART NUMBER SPECIFIED. VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL). ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED. ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED. ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED. ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV. ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED. EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS. EX) PRINTING SIDE CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.

9

101112

131415

LATD

RATD

DAC_SL

DAC_SR

DAC_SBL

DAC_SBR

C5573

C5572

C5575

47/50

69

67

71

70

68

66

RECR3

INLB/RECL2

INL11/RECL5

INL10/RECL4

INR11/RECR5

INR10/RECR4

64 : INL9 63 : INR9 62 : INLA/RECL1 61 : INRA/RECR1

Q5501

R2S15211FP

SELECTOR / TONE /

VOLUME

(Botom view)

41 : DGND

ADCR

SUBR

ADCL35FRIN234FLIN2

37

38

36

47/25

C5566

C5565

R5689

R5690

SBZ2_MUTE

C557447/50

C557147/50

C557047/50

C557647/50

74

72

73

75

FLIN1

FRIN1

RECL3

1-OUT : 2 AGND : 3

BASS_L1 : 21 BASS_L2 : 22

TRE_L : 23

AVCC : 24

SLIN2

SRIN2

SWIN2

31

33

32

30

Q5503A

C5709

47/25

R5590

220K

C5590 330J

R5594

R5595

C5591 330J

220K

R5598

C5710

47/25

Q5503B

DOWN MIX.

MICROPROCESSOR PCB

To NADG-9462

P302

1

23456

DAC_FL

DAC_FR

DAC_SW

C5569

47/50

76

79

78

77

80

CIN1

SLIN1

SRIN1

SWIN1

SBLIN1

SBRIN1

2-OUT

2-C

1-C : 1

3-C 3-OUT AGND 4-OUT

4-C

5-C 5-OUT AGND 6-OUT

6-C

FLC

FLOUT

AGND

FROUT

FRC

CIN2

SBRIN2

TRE_R

SBLIN2

BASS_R225BASS_R1

27

26

29

28

C5564 223J

C5563 823J

Q5503 : NJM4580

4

1

10K

7

8

SD-3 : H2

-15VA

DAC_C

GND_A

220K

R5691

220K

R5692

220K

R5693

220K

R5694

220K

R5695

C5551 47/25

1 2 3 4

C5552

5

C5553

6 7 8 9

10

C5554 C5555

11 12 13 14

C5556

15 16

C5557 17 18 19

C5558

20 21

C5559

C5560 823J

22

23

C5561

24

474J

C5562

C5674

1.8K

R5586

C5675

-6.8V

3

R5591

2

10K

R5592

470

R5596

470

5

R5599

6

10K

789

+15VA

+6.8V

R5593

1.2K

R5597

1.2K

GND_D

47/25 47/25

47/25

474J

223J

470/16

!

10

111213

VOL_CLK

PROTECT

VOL_DATA

R5585

1.8K

D5671

UDZ6.2C

D5673

D5672

UDZ6.2C

D5674

-14.8V

DAC_FR

DAC_FL

+14.8V

VOLH

SEC1H

SBR_OUT

SBL_OUT

C_OUT

SW_OUT1

SR_OUT

SL_OUT

R_OUT

L_OUT

R5674

(1W)

68

1SS133

R5675 68

(1W)

1SS133

14

AMUT

15

Z2_MUT

R5684 68

R5683

68

22

R5667

C5667

C5666

R5666

22

(1W)

220/25

+15V

C5630

47/50

Subwoofer

+15V

D5709

D5719

-15V

-14.8V

R5630

220

+14.8V

3

RL1N4003

3O2

Q5630 : NJM4580

C5631

47K

R5631

15K

R5632

Q5670 78M15

1

I

O

G

2

C5670

C5672

220/25

C5671

C5673

220/25

1

G

I

Q5671 79M15

LIST

J5246

R5677

3

2

221J

5

6

-23.5V

4

R5633

8

10/50

Q5630A

R5634

C5632

103J

1.2K

Q5630B

LIST

R5678

+22V

R5688

NC

R5686

NC

R5672

10

R5670

10

R5673 27

R5671

27

R5685

R5687

NC

10K

7

J5247

2W

NC

AUDIO ANALOG SIGNAL

MICROPROCESSOR PCB

To NADG-9462

FRONT L

FRONT R

SD-3 : H2

P301

Z2_MUTE

SB_MUTE

NC

U01

AMPLIFIER PC BOARD

+15V

R5680

LIST

R5681

220K

R5682

LIST

MUTING

1

LIST

D

SBR_OUT

SBL_OUT

SR_OUT

SL_OUT

R_OUT

L_OUT

C_OUT

Z2_R

Z2_L

100/25

LIST

C5601

47/50

C5602 47/50

C5603

C5604 47/50

C5605

C5606

C5607

47/50

C5608

C5609

R5601

R5602

47/50

C5600

SW_OUT

+22V

C9003

C9004

-22V

2W

D9001 -6004 : RL1N4003

R5600

220K

R5603

R5604

R5605

R5606

R5607

R5608

R5609

1000/35

R5813

R5610

220K

R5611

LIST

R5612

LIST

220K

R5613

2.2K

R5614

220K

2.2K

R5615

R5616

220K

2.2K

R5617

2.2K

R5618

220K

2.2K

R5619

D9002

LIST

270

2.2K

A

Q5600

Q5601

D9001

D9003D9004

+3.7V

R5814

Q5602

Q5603

Q5604

Q5605

Q5606

Q5607

Q5608

Q5609

LIST

C9001

R5621

LIST

R5622

LIST

R5623

R5624

R5625

R5626

R5660

2.2

334J

R5661

2.2

R5620

0

R5627

1W

Q5600 - 5610 : RN1441

100

Q5610

Q5611

NC

Q5612

NC

Q5613

NC

0

Q5614

NC

Q5615

NC

Q5616

0

NC

Q5617

NC

0

GND_S1

SD-2 : B3

+22V

S1L+

GND

SD-2 : B5

S1L-

To NAAF-9419(2/2)

NAAF-9419(1/2)

<Note>

1. NC = No mount of parts.

2. SD-x : XY is short for Schematic Diagrams-x and each sockets location, X = A to H, Y = 1 to 5.

VOLH

SEC1H

PROTECT

Refer to following table about the parts displayed by mark " LIST ".

TA20 : Jumper wire L=20 mm

MODEL No.

A B C

Yes

D

R5680, 5682 220K None

R5813

R5814

R5611, 5612

R5621, 5622

R5677, 5678

J5246, 5247

Q5700

R5668

RL5700

D5700

C5700

2.2K

TA20

NC

0

AMPLIFIER PCB

To NAAF-9419(2/2)

SD-2 : B3

HT-R518 HT-R560 TX-SR576TX-SR506

None

None Yes YesYesYes Yes

None

2.2K 2.2K2.2K2.2K

None

15 (2W) 15 (2W) 15 (2W)None None

P6991

SP TERMINAL PCB

To NATRM-9468

R5567

C5527

221J

C5528

R5568

221J

C5529

R5569

R5570

C5530

D5717

D5707

1SS352

C5531

R5571

221J

C5532

R5572

R5573

C5533

C5534

R5574

D5708

D5718

1SS352

Yes

0None None None

00NoneNone None

TA20NoneNone None

5 4

C6086

3 2 1

SD-5 : H3

JL6604A

R5527

330

2.2K

R5528

2.2K

330

R5529

R5530

C5707

103K

R5531

100

NC

R5532

R5533

R5534

C5708

103K

HT-R667

None

Yes

None

0

15 (2W)

None

GND_E

102J

103J

C6076

103J

102J

C6077

C6087

P7907

R

L

P7908

SUBWOOFER

SBR

SBL

SR

SL

To NAAF-9419(2/2)

R

L

C

HT-R960

None

YesYes

None

None220K

000 0

P6602

(Lever type)

R

ZONE 2

LINE OUT

NC

PRE OUT

NC

SD-2 : E4

SPEAKERS B

L

LIST

C

B

FRONT

LIST