DOWNLOAD Sony SCD-1 / SCD-777ES (serv.man3) Service Manual ↓ Size: 8.91 MB | Pages: 78 in PDF or view online for FREE

41

1

2

3
4

5

6

7

8

9

10

11

12
13
14

28

27

26
25

24

23

22

21

20

19

18

17

16
15

SWITCHING

CIRCUIT

CONSTANT

CURRENT

CIRCUIT

REFERENCE

VOLTAGE

CIRCUIT

CONTROL

CIRCUIT

I01+

IN2–

IN2+

NC

IN1+
IN1–

NC
C4

C3
GND2

VEE2

VEE1

C6

C5

CIREF

I02–

NC

I01–

I02+

NC

VCC2

C2
C1

VCC1

VREF

VCNT

GND1

RIREF

CLOCK

BUFFER

SYNC

NC

52

IFSEL 53

NC 54

DVSS 55

64

51

MUTE

50

DVDD

43

DVDD

42

VSS2

63

VSS2

62

L1(+)

61

VSS

60

L1(-)

59

VDD

58

VDD2

57

SUB(C)

56

SUB(D)

1024Fs CLOCK BUFFER

XVDD

XOUT

XIN

XVSS

XVSS

10

9

8

11 12

7

VSUB(A)L

6

VDD2

5

VDD

4

L2(-)

3

VSS

2

L2(+)

1

NC

20 VSS2

21 VSS2

22 R1(+)

23 VSS

24 R1(-)

25 VDD

26 VDD2

27 SUB(C)

28 SUB(D)

29 DVSS

30 NC

31 DRPOL

32 LVCKO2

13

VSUB(A)R

14

VDD2

15

VDD

16

R2(-)

17

VSS

8

R2(+)

19

NC

PLM-R2

PLM-R1

CLOCK

GENERATOR

LVCKO1

33

CKVDD

34

256FSO

35

NSDIR4

36

NSDIR3

37

NSDIR2

38

NSDIR1

39

NSDIL1

46

NSDIL2

47

NSDIL3

48

NSDIL4

49

64FSO

40

CKSEL1

41

BUFFER

CKSEL2

44

CKSEL3

45

PLM-L2

PLM-L1

REGISTER

NSDA

TA(L/Rch)

MUTE

SYNC

42

+

–

+

–

+

–

+

–

+ 
–

+

–

+
–

+

–

GND

MUTE1

REF1

POW VCC1

OUT1–

OUT1+

GND

OUT2+

OUT2–

POW VCC2

PRE VCC

REF2

MUTE2

OP2-IN+

OP2-IN–

OP2-OUT

IN1

IN1’

BIAS

GND

OP1-IN+

OP1-IN–

OP1-OUT

IN2’

IN2

1

25 24

23

22 21

20

19

18 17

16

15 14

2

REF1

SWITCH

LEVEL SHIFT

VREF2

VREF1

LEVEL SHIFT

CH2

MUTE

REF2

SWITCH

CH1

MUTE

3

4

5

6

7

8

9

10 11

12

13

1

2

3

4

5

6

7

14

13

12

11

10

9

8

PFD

1/2 DIVIDER

VCO

LOGIC

VDD

SELECT

VCO
OUT

FIN-A

FIN-B

PFD

OUT

LOGIC

GND

VCO
VDD

R BIAS

VCO

IN

VCO

GND

VCO

INHIBIT

PFD

INHIBIT

NC

1

2

3

4

5

6

7

8

B1

B0

C.COM

CO

INH

VEE

VSS

VDD

B.COM

A.COM

A1

A0

A

B

C

C1

9

10

11

12

13

14

15

16

OPEN

OPEN

OPEN

43

•

Pin No.

Pin Name

I/O

Description

1

VCC

—

Power supply terminal (+5V)

2

SSSD

I/O

Two-way data bus with the SACD/CD RF AMP (IC001)

3

SSI CLK

O

Serial data transfer clock signal output to the SACD/CD RF AMP (IC001)

4

PWM

O

PWM signal output to the loading motor drive (IC515)

5

JIG CTR

I/O

Two-way data bus with the RS-232C (for check)

6

DF LT

O

Latch signal output to the digital filter (IC301)

7

DCMF LT

O

Not used (open)

8

DATA

O

Serial data output to the digital filter (IC301)

9

SHIFT

O

SHIFT signal output to the digital filter (IC301)

10

X RES0

O

Not used (open)

11

VSS

—

Ground terminal

12

SOUT0

O

Serial data output to the RS-232C (for check)

13

SOUT1

O

Serial data output to the DSD decoder (IC703)

14

SIN0

I

Serial data input from the RS-232C (for check)

15

SIN1

I

Serial data input from the DSD decoder (IC703)

16

SCK0

O

Serial data output to the RS-232C (for check)

17

SCK1

O

Serial data output to the DSD decoder (IC703)

18

D0

I/O

19

D1

I/O

20

D2

I/O

21

D3

I/O

22

VSS

—

Ground terminal

23

D4

I/O

24

D5

I/O

25

D6

I/O

26

D7

I/O

27

D8

I/O

28

D9

I/O

29

D10

I/O

30

D11

I/O

Two-way data bus with the servo digital signal processor (IC512), ARP (IC702), expander

31

D12

I/O

(IC711), flash memory (IC716) and S-RAM (IC717)

32

D13

I/O

33

D14

I/O

34

D15

I/O

35

VCC

—

Power supply terminal (+5V)

36

A0

O

Address signal output to the ARP (IC702)

37

A1

O

Address signal output to the servo digital signal processor (IC512), ARP (IC702), expander
(IC711, 712), flash memory (IC716) and S-RAM (IC717, 718)

38

A2

O

Address signal output to the ARP (IC702), expander  (IC711, 712), flash memory (IC716) and

39

A3

O

S-RAM (IC717, 718)

40

A4

O

41

A5

O

42

A6

O

43

A7

O

44

VSS

—

Ground terminal

Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)

Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)

Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)

Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)

Address signal output to the ARP (IC702), flash memory (IC716) and S-RAM (IC717, 718)

44

Pin No.

Pin Name

I/O

Description

45

A8

O

46

A9

O

47

A10

O

48

A11

O

49

A12

O

50

A13

O

51

A14

O

52

A15

O

53

A16

O

54

A17

O

55

A18

O

Address signal output to the flash memory (IC716)

56

A19

O

Address signal output terminal     Not used (open)

57

VSS

—

Ground terminal

58

WAIT

I

Wait signal input from the ARP (IC702)

59

EEP SIO

I/O

Two-way data bus with the EEPROM (IC735)

60

EEP SCL

O

clock signal output to the EEPROM (IC735)

61

CLK

O

System clock output terminal    Not used (open)

62

STBY

I

Hardware standby signal input terminal (fixed at “H”)

63

RES

I

System reset signal input from the ARP (IC702) and reset signal generator (IC734)   “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

64

NMI

I

NMI signal input terminal    Not used (pull up)

65

VSS

—

Ground terminal

66

EXTAL

I

System clock input terminal (16 MHz)

67

XTAL

I

System clock input terminal (16 MHz)

68

VCC

—

Power supply terminal (+5V)

69

AS

O

Address strobe signal output terminal    Not used (open)

70

RD

O

Strobe signal output for data reading to the servo digital signal processor (IC512), ARP  (IC702),
expander (IC711, 712), flash memory (IC716) and S-RAM (IC717, 718)

71

HWR

O

Strobe signal output for data writing to the servo digital signal processor (IC512), ARP  (IC702),
expander (IC712), flash memory (IC716) and upper byte data writing strobe signal output to the
S-RAM (IC717)

72

LWR

O

Strobe signal output for data writing to the expander (IC711) and lower byte data writing strobe
signal output to the S-RAM (IC716)

73

MD0

I

Input terminal for setting microcomputer operation mode (fixed at “L”)

74

MD1

I

Input terminal for setting microcomputer operation mode (fixed at “L”)

75

MD2

I

Input terminal for setting microcomputer operation mode (fixed at “H”)

76

AVCC

—

Power supply terminal (+5V)

77

VREF

I

Reference voltage input terminal (+5V)

78

AN0

I

Serial data input from the RS-232C (for check)

79

BUSY2

I

BUSY signal input from the servo digital signal processor (IC512)

80

ADS RDY

I

Ready signal input terminal (fixed at “H”)

81

IFBSY

I

BUSY signal input from the FL controller (IC1001)

82

PLIN

I

PL signal input from the servo digital signal processor (IC512)

83

AK0

I

Monitor signal input from the expander (IC711)

84

AK1

O

85

AK2

O

86

AVSS

—

Ground terminal

Address signal output to the flash memory (IC716) and S-RAM (IC717, 718)

Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)

Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)

Two-way data bus with the expander (IC712) , flash memory (IC716) and S-RAM (IC718)

Monitor signal output terminal (fixed at “L”)