Sony hcd-sd1 service manual Main Section, Defb SW Mute Speaker

HCD-SD1

– MAIN SECTION –

	ANTENNA	TUNER
		UNIT
AM			L-OUT
			R-OUT	R-CH
		STEREO		ST
FM			TUNED	TUN
75Ω				MUT
		MUTING		DO
			DO
			CL	CL
			DI	DI
			CE	CE
		FM-DET-OUT
	J101			BUFFER
				Q450
	(1/2)
	L
MD	IN
	R	R-CH
	J102			SWITCH
				IC102
	(1/2)
	L	BS		12
					14
CS/BS	IN			13
		R-CH
	R					SIRCS
	L					IC602
TAPE	IN			2	15	R-CH
		R-CH	R-CH
	R			1
				9	10 11
				SWITCH
					Q103
			RDS DECODER
				IC451
		4	IN	INT	16
				DATA	2
			13	14
			X601
			4.3 MHz

SOUND PROCESSOR

IC101(1/2)

SOUND PROCESSOR

POWER AMP

TUNER

IC101(2/2)

IC801

SPEAKER RELAY

4

BS/CS

RY501

TMB11

5

15

16

18

10

+

MD

3

+

6

BASS/

DBFB

9

–

L

CD

8

DEFB SW

R-CH

27

25

R-CH

MUTE

R-CH

–

SPEAKER

TREBLE

AMP

7

Q121

Q141

8

INPEDANCE

AMP

–

• VOLUME

R-CH

R

6-16Ω

R-CH

+

28

39

RELAY SW

R-CH

MUTE

38

+8dB AMP

R-CH

35

R-CH

Q502,503

37

IC103

J101(2/2)

Q505

RELAY DRIVE

FAN-DRIVE

36

3

1

L

D881

Q504

R-CH

Q551–553

LAT

20

LATCH

MD

FAN

DAT

21

DATA

R-CH

5

7

R-CH

MUTE

R-CH

R OUT

CLK

22

CLOCK

Q111

RELAY SW

J102(2/2)

Q501

R-CH

L

J667

TAPE

PHONES

MUTE

OUT

MASTER CONTROL

R-CH

R

Q112

IC701

MUTE SW

CN781

TC-MUT

99

DAT

Q183

1

90

SIRCS

MD-MUT

98

MUTE SW

HLP

2

SYSTEM

DAT

Q182

65

SDATA

CLK

CONTROL

CLK

MUTE SW

5

66

SCLOCK

MUTE2

69

LAT

Q181

67

SLAT1

SP RELAY SW

76

ST

IC311

82

STEREO

SWITCH

TUN

MUTE1

68

DIGITAL

83

TUNED

Q753

DOUT

DO

HPSW

31

OPTICAL

84

ST.IDATA

DI

ON/XSRBY

81

85

ST.ODATA

CL

FLDISP SW

75

86

ST.CLOCK

T991

CE

SWITCH

HLP

87

ST.LATCH

HELP

51

MUT

Q793

MAIN

88

ST.MUTE

I2C.DAT

55

SWITCH

6

SY

LY

7

DAT

TRANSFORMAER

AC IN

100

V/T

I2C.CLOCK

56

SWITCH

Q792

3

SX

LX

2

CLK

RECT

±B

Q791

I2C BUS

D971

RY901

EXTENDER

A±7.5VREG

A±7.5VREG

RECT

STANDBY RELAY

38

FL.RST

S621-625,631-634

IC791

Q941, 946

D941-944

AC OUTLET

37

FL.LAT

KEY2

26

KEY BOARD

RECTIFIER

CN904

36

FL.SLK

D±5V

3

D+5VREG 1

SWITCH

D921,922

35

FL.DAT

IC921

20	RDS.CLK	KEY1	25
					M+7V	3	M+7VREG	1
21	RDS.DAT						IC922
		ENCODERB	19	2
		ENCODERA	18	1	CDD+5V		CDD+5V SW

VF1

VF0

–VG

FLUORESCENT INDICATOR TUBE

FL601

		5 – 50
56	VFL
BUFFER	G12	DAT	CLK	CS RST
Q601
	51	63	62	61 60

A

CD SECTION

(Page 18)

CD

XT1

14

X702

Q942

VOLUME

LOUT

XT2

13

32KHz

S691

SCOR 22

SCOR

X2

11

X701

t

ST 12V OUT

RECTIFIER

T991

ST12V

SQSO

43

SQSI

X1

10

5MHz

TIMER:RED

Q951,952

Q951,953

D605

SUB

SQCK 45

SQCK

TIMER LED

73

u

TRANSFORMER

FOCUS SW

52

FSW

ON LED

72

ON:GREEN

STBY+5.6V REG

RECT

SENS

STANDBY:RED

STBY+5.6V

3

1

53

SENS

STBY LED

70

D606

IC901

D901-904

CLK 57

CD-CLK

VG

DAT 58

CD-DATA

VG SW UG REG

RECT

DF-LAT 59

DF-LAT

SWITCH

D601-604

D601

D602

D603 D604

VG SWITCH

Q964

Q961

D961-964

XLAT

60

DSP-LAT

LIGHT

64

)/± 0/≠ π fl

Q752

Q966

VF1

XRST 63

BD.RESET

AC CUT

8

IN SW

DISPLAY DRIVER

IC601

49

IN SW

RESET

RESET

VF0

VF SW

OUT SW 50

OUT SW

RESET

15

3

1

STBY+5.6V

Q962,963

Q751

IC951

LOAD IN

61

LOAD IN

D752

D751

VF SWITCH

• R ch is same as L ch

LOAD OUT

2

62

LOAD OUT

PANEL SW

TO IC701 VDD

PANEL SW

Q965

• SIGNAL PATH

BD POWER

1

S699

SWITCH

+

: FM

Q943

BS

D OUT

C759 BACK UP

:BS/CS

: PB

: REC

: CD

: Digital out

: TAPE

– 19 – – 20 –