SONY STR DE925 Service Manual

STR-DE925/V919

SERVICE MANUAL

Ver 1.1 2003. 06

Photo : STR-DE925

Dolby Laboratories Licensing Corporation. “DOLBY” the double-D symbol a “AC-3” and “PRO LOGIC” are trademarks of Dolby Laboratories Licensing Corporation.

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION: With 8 ohm loads, both channels driven, from 20 - 20,000 Hz; rated 110 watts per channel minimum RMS power, with no more than

0.09% total harmonic distortion from 250 milliwatts to rated output (USA model only).

Amplifier section

POWER OUTPUT Stereo mode

Surround mode

a)Depending on the sound field settings and the source, there may be no

sound output.

Dynamic power output

Harmonic distortion at rated output

Frequency response

(8 ohms 20 Hz - 20 kHz, THD 0.09%) 110 W + 110 W (8 ohms at 1 kHz, THD 0.8%) Front: 110 W/ch Centera): 110 W Reara): 110 W/ch

165 W + 165 W, 8 ohms 230 W + 230 W, 4 ohms

Less than 0.09% (with sound field, tone, and bass booster bypassed)

PHONO: RIAA

equalization curve ±0.5 dB

CD, TAPE, MD/DAT, TAPE/MD, DVD/LD, TV/DBS, VIDEO 1, 2, and VIDEO 3 :

10 Hz - 50 kHz +0.5/-2 dB (with sound field, tone, and bass booster bypassed)

Inputs (Analog)

b)78’ IHF c)Weighted network, input level

Inputs (Digital)

Outputs

US Model

Canadian Model

E Model

PX Model

STR-DE925

Chinese Model

STR-V919

PHONO:

Sensitivity: 2.5 mV Impedance: 50 kilohms

S/Nb): 75 dB (A, 2.5 mVc)) CD, DVD/LD, TAPE, MD/DAT, TAPE/MD, TV/DBS, VIDEO 1, 2, and VIDEO 3 :

Sensitivity: 150 mV

Impedance: 50 kilohms

S/Nb): 82 dB (A, 150 mVc))

DVD/LD (coaxial):

Sensitivity: -

Impedance: 75 ohms

S/N: 100 dB (A, 20 kHz LPF) DVD/LD, TV/DBS, MD/DAT (Optical):

Sensitivity: -

Impedance: -

S/N: 100 dB (A, 20 kHz LPF) TAPE, MD/DAT, TAPE/MD, (REC OUT); VIDEO 1, 2 (AUDIO OUT):

Voltage: 150 mV

Impedance: 10 kilohms WOOFER:

Voltage: 2 V

Impedance: 1 kilohms PHONES:

Accepts low - and high-impedance headphones

— Continued on next page —

FM STEREO FM-AM RECORDER

9-922-896-12

Sony Corporation

Home Audio Company Published by Sony Engineering Corporation

STR-DE925/V919

3-2. BLOCK DIAGRAM – MAIN SECTION –

DE925

MODEL TV/DBS

DVD/LD

MD/DAT

TAPE

VIDEO 3

MONITOR

MODEL

PHONO

INPUT

VIDEO

VIDEO 1

VIDEO 2

V919

TV/LD

DVD

CH, SP, MY MODEL

DVD/LD

TV/DBS

MD/DAT (INPUT)

MD/DAT

(OUTPUT)

COAXIAL

DVD/LD

OUTPUT

INPUT

OUTPUT

INPUT

OUTPUT

INPUT

TV/LD

J253

DVD

J252

VIDEO 1

INPUT

FM

75Ω

AM

L

LCD

LINPUT

LOUTPUT

L

LOUTPUT

LAUDIO

TM301

ANTENNA

J301

J302

J303

IC001

IR LINK

DET

IC002

IR LINK

DET

IC003

IR LINK

DET

IC004

IR LINK

DET J001

J299

J201

J202

J203

Y

C

Y

C

Y

C

TUNER UNIT

FM

AM

DO

4 14 15 13 2 3 1

DO

TUNED

IC007

7 1

13

15

9

11

3

5

S-VIDEO

3

5

13

5

13

16

TUNED

TMUTE

STEREO

TMUTE

STEREO

VIDEO SELECT

IC201

V3 IN M OUT

V1 IN

V1 OUT

V2 IN

V2 OUT

TV

LD

Y SWITCH

IC252

V1 O

TV

V1 I

C SWITCH

IC251

V1 O3

TV LD

V1 I

M O

S DATA

VCC

SW1

SW2

SW3

SW4

L OUT

R OUT

DATA

CLK

CE

S CLK

S LAT

16

VEE

8

14

10

4

6

15

14SW1 10SW2

4SW3 6SW4

1LDM O

15

14SW1 10SW2

4SW3 6SW4

1

10

12

R CHR CH

EQ AMP

IC302

31

15 14

SELECT

13

SWITCH

12

IC1005

4 3 2 1

IC202

-5V

3 2

REG

AUDIO SELECT

IC301

3

2

1

7 6 5

10

9

CONTROL

14

S DATA

5

11

A

10

B

9

C

IC1006

A B C

+5V

-15V

DO

TUNED

STEREO

60

61

62

DATA

V-A

81

AUTO STOP

V-B82

V-E

83

V INH

80

Y

J252

VIDEO 1

OUTPUT

C

Y

J251

MONITOR

OUTPUT

C

CE

CLK15DI

13

S LAT

S CLK

TMUTE

97

STEREO

TUNER MUTE

4

DVD/LD

VIDEO2

8

11

A

S LAT

S CLK

S DATA

57

58

56

111A110B109

DATA

LATCH

CLOCK

OUTPUT

VIDEO1

X1101

24.576MHz

B

C

76

78

C

SCLK

SWDT

INPUT

77

J305

LTV/DBS

L

LOUTPUT

J304

LINPUT

L

LINPUT

DIGITAL AUDIO

I/F RECEIVER

IC1101

47

D IN

27

XO

26

XI

40

SWDT

42

SCLK

41

XLAT

11

RESET

2

XLAT

RESET

D OUT

LRCK

ERROR

SRDT

CLK

BCK

SELECTOR

1

2

6

7

9

10

CONTROL

35

29

34

36

30

38

75

SRDT

IC303

CE13CLK15DI

14

S LAT

S CLK

S DATA

X1301

49.152MHz

IC1305 IC1305

D1201

67

ERROR

4

8

11

IC1305

Q1203

14

ANALOG/DIG

IC1108

IC1102

IC1403 CLOCK

13 10

DIVIDE

MEMORY

D0-7

IC1302

IC1305

IC1102

A0-7

A8-15

SYSTEM

CONTROL

IC1201

LATCH IC1303 IC1304

DOLBY

DIGITAL AUDIO DECODER

IC1301

22

SDATA 1

27

SDATA 2

44

MCLK

43

SCK

25

SCLK1

28

SCLK2

42

RCLK

26

LRCLK1

29

LRCLK2

30

CLK

D0-7

5

EMRD

21

EXTMEM

SCCLK

SCD IN

7

6CS18

IC1202

16

15

SCCLK

SCDOUT

AUDATA0 AUDATA1 AUDATA2

SCDOUT

INTREQ

17CS20

36

41 40 39

19 20

RESET

Q1204

19

18

INTREQ

SCDIN

SRAM IC1402

Q1205

25 32

AD0 AD7

D0-7

A0-7

D0-7

35

HA0

IC304 IC1104 IC1104

AUDIO DSP

IC1401

SOA

113

BCK0

SOB

115

LRCK

SOC

99

CLK1

117

SIA

118

SIB

119

SIC

74

XWE

70

XOE

16 20

HD0

.

23

HD7

25

SOD

15

HA0

HRDY

XHDRD10XHDCS14XRST

XHDWR

9

26

IC1202

21

22

24

36

XRST

XHDCS

XHDRD

XHDWR

BALANCE

RV402

79

106

PROTETOR

VOLUME

RV401

IC408

IC410

IC409

101

102

103

105

104

RY HP

RY FRONT A

RY FRONT B

RY CENTER

RY WOOFER

RY REAR

DISP DATA

DISP CLK

RY POWER

DATA CLK LAT

DISP MR

STOP

SOTO

SINO

MD2 MD0

• RCH is omitted

• Signal Path

107

52 55 51

53SREQ 90RESET

64 10

9 87 89

VOL CONT

IC414

14

IN

9

DATA

8

CLK

10

LAT

VOL CONT

IC416

3

IN

14

IN

9

DATA

8

CLK

10

LAT

VOL CONT

IC415

14

IN

9

DATA

8

CLK

10

LAT

M

: FM

: PHONO

OUT

Q120

LED

DRIVE

L

15

C

2

A

W

15

SL

15

UP

DOWN

B

LED VOL

AC MUTE PROTECTOR

RY HP RY FRONT A RY FRONT B

RY CENTER RY WOOFER RY REAR

U DATA U CLOCK U MREQ

U SREQ U REST RY POWER STOP

SOTO SINO MD2 MD0

C

D

AUDIO CODEC

IC1103

30

LIN+

29

LIN-

9

SDTO

39

MCLK1

4

BCLK

5

LRCK

6

2 3 4

5

13

Q1206

23

37

HRDY

SOD

7 8

Q1207

SDTI 1 SDTI 2 SDTI 3

CDTO

44

6

CDTO

CDTI43CCLK42CS41PD

5

CDTI

L OUT1

L OUT3

R OUT3

L OUT2

4

CCLK

17

3CS7PD108

IC1104

27

IC1105

23

IC1105

24

IC1106

25

Q301

RELAY DRIVE

85

RY DIRECT PASS

Q1201

MUTE CONT

Q1202

FUN MUTE

XI

X1201

4MHz

RY301

92XO93

IC405

MUTE Q302

IC407

MUTE Q304

IC407

MUTE Q354

IC406

MUTE Q303

LAT

CLK

DATA

48

50

49

84

EV STB

EV CLK

EV DATA

AC MUTE

: CD

: DIGITAL

• Abbreviation CND :Canadian EA :Saudi Arabia MY :Malaysia SP :Singapore CH :Chinese

— 9 — — 10 —

3-3. BLOCK DIAGRAM – POWER SECTION –

STR-DE925/V919

US,CND MODEL

J258

TV/DBS

J257

MONITOR

J255

VIDEO 1

J256

VIDEO 2

16

A

B

D

B

Q255,256

LEVEL

CONTROL

Q257,258

LEVEL

CONTROL

Q254

LEVEL

CONTROL

SL

PROTECTOR

RY FRONT A

RY CENTER

RY WOOFER

RY POWER

S-LINK

L

C

W

AC MUTE

RY HP

FRONT B

RY REAR

STOP

URESET

USREQ

UMREQ

UCLOCK

UDATA

SOTO

SINO

MD2 MD0

DOWN

LED VOL

Q251,252 SWITCH 3

2

IC254 IC254

IC254

5 6

UP

Q253

BUFFER

1

7

8

7

11

IC106

MOTOR

DRIVE

ST-I/O IC251

IC251

MUTE

Q501,503

3

2

POWER AMP(L)

IC501

13 VCC

+B

VCC

+VE

14 15

-B

6

1

POWER AMP(C/W)

13 VCC

+B

14 VCC 15

-B

8

1 MUT

6

POWER AMP(SL)

13 VCC

+B

14 15

-B

6

1

55

UP

56

DOWN

88

LED VOL

M BUS96TV

VIDEO 2

VIDEO 1

94

93

95

6

4

VEE

IN

NF

MUT

-VE

IC601

+VE

VEE

IN

NF

-VE

IN

IC701

VCC

+VE

VEE

IN

NF

MUT

-VE

49

51

20

19

MD0

MD2

SINO

38

FUNCTION

KEY

S106,110,114,118 S122,126,128,130

2

5

3

12

9

11

2+VE 3-VE

2

5

3

SOTO

AD KEY1

61

62

60

UDATA

UCLOCK

S105,109,113,117 S121,125,127,129

LIMITER

Q504

LIMITER

Q505

LIMITER

Q604

LIMITER

Q605

LIMITER

Q704

LIMITER

Q705

UMREQ

39

FUNCTION

KEY

59

USEQ

AD KEY2

BOOSTER

Q506

BOOSTER

Q507

BOOSTER

Q606

BOOSTER

Q607

BOOSTER

Q706

BOOSTER

Q707

AD KEY3

40

FUNCTION

KEY

S104,108,112 S116,120,124

CUR DET

Q508

CUR DET

Q608

CUR DET

Q708

AD KEY4

41

FUNCTION

KEY

S103,107,111 S115,119,122

PROTECTOR

Q547-549

D109,110

LED

DRIVE

Q109,110

2

1

LED V2

LED V1

MODE CONTROL

IC102

S102

MUTING

PROTECTOR

Q509,510

PROTECTOR

Q609,610

7

AD KEY5

43

LED MD/DAT

D111-113 D116-118

DRIVE Q111-113 Q118-116

4

3

LED V3

LED DVD/LD

44

FUNCTION

KEY

S135-139,146

D114,115

LED

DRIVE

Q114,115

6

LED TAPE

FUNCTION

KEY

S140-145,147 S132,133

LED

5

9

10

LED TV/DBS

LED PHONO

AD KEY6

Q511

Q611

8

LED CD

LED TUNER

72

SPEAKER

SWITCH

S134

D101

LED

DRIVE

Q102

90

SP B73SP A

LED MUTE

POWER KEY

74

S131

POWER

D104-106

LED

DRIVE

Q103,104

Q106

16

LED INDEX

F2

15

FL DRIVE FL DRIVE

RELAY DRIVE

Q601

14

LED EQ

LED SUR

FL CLK21FL LAT24FL CLEAR

25

26

34

24

LAT

CLK

DIN

FLOURESCENT

INDICATOR TUBE

RY602

D1202

D1203

D100,108 D119,122

LED

DRIVE Q107,108 Q119,122

87

89

92

LED SOUND FIELD

LED DOLBY DIGITAL

CLR

29

FL101

91

LED BASS B

LED ON/OFF

4LS29

CLK

3

DOUT

IC105IC104

5CL30

RELAY DRIVE

Q546

RELAY DRIVE

Q596

24

F1

RY501

RY502

RY601

RELAY DRIVE

Q645

RY503

RELAY DRIVE

Q544

RY701

RELAY DRIVE

Q749

X101

82XO83

XI

ABUS OUT

67

Q180

I/O

DIN FL DAT

BUFFER

SIRCS

URESET

RESET

STOP

ABUS A1 IN

LAT

98

63

R CH

S501

IMPEDANCE

SELECTOR

26

58

77

47

R CH

+B

R CH

J701

PHONES

• RCH is omitted

L

R

TM501 FRONT

SPEAKER

• Signal Path

:FM

:CD

• Abbreviation CND :Canadian

C

S(L)

S(R)

-B

SWITCH

Q612,615

8

4

Q101

Q182

I/O

BUFFER

SURROUND

J501

WOOFER

CNJ701

WIRELESS

REAR

SPEAKER

5

11

12

TM701

SPEAKER

SWITCH Q613,616

REMOTO CONTROL RECEIVER

RESET

Q105

I/R

CONT

IC181

15 16

X102

7.28MHz

IC101

IC404

+5V

3

+15V

-15V

+32V

+24V

-24V

D5V

D3.3V

DELAY +B SW

Q902

POWER

CONT IC901

1

3

6

D184-186

58

J204

S-LINK

1

IC403 +12V

3

IC401 +15V

1

IC402

3

SWITCH Q747,748

Q801 +32V

REG

3

REG

-15V REG

IC801

5V

REG IC802 +3.3V

REG IC803 +3.3V

REG

D901-904

1

3

2

F801

D801

F802

F803

D802-805

F804

D808

1

RELAY

DRIVE

Q901

F805

F2

F1

RY901

T902

TU +5V

TU +12V

IC702

+18V

3

REG

SWITCH

Q614,618

INV SW

Q617

IC809

+5V

3

1

REG

+5.6V

RESET

14

Q181

Q183,184

33

IC180

I/R

LED

DET

2

DRIVE

EA :Saudi Arabia MY :Malaysia SP :Singapore CH :Chinese

T901

EXCEPT E, EA, PX MODEL

F901

US,CND MODEL

JW925

E, EA, PX MODEL

VOLTAGE

SELECTOR

F904

JW903

MY, SP, CH MODEL

F903

US, CND, E, EA, CH, PX MODEL

VS901

MY, SP MODEL

CNJ901

CNP901

AC IN

— 11 — — 12 —

3-5. SCHEMATIC DIAGRAM — AMP SECTION —

STR-DE925/V919

, PX

— 15 — — 16 —

STR-DE925/V919

3-7. SCHEMATIC DIAGRAM — VIDEO SECTION —

• See pages 61 for IC Block Diagrams.

(Page31)

(Page27)

— 19 — — 20 —