Sony MZ-E90 service manual Servo, System Control Block Diagram, MAIN BOARD2/2, MZ-E60

6-2-2. SERVO, SYSTEM CONTROL BLOCK DIAGRAM

MZ-E60

MAIN BOARD (2/2)

SERVO, SYSTEM CONTROL SECTION

MD

2

AOUTL

B+

• Signal path

(UNREG)

HEADPHONE

SECTION

AOUTR

B+

1

B+

AMP

: MD

(Page 18)

B+

EEPROM

B+

(Q907)

IC301

(Q907)

IC802

(Q907)

20

VCC

PW A

8

VCC

CS

1

76

NV CS1

DVDD MON

5

SK

2

75

NV CLK

22

2

DO

3

74

NV DI

B+

PW B

Q802

7

PE

DI

4

73

NV DO

SYSTEM

21

(D901)

CONTROL

21

4

•

VREF

4

VREF

IC801

VDD

40

MCLK

25

XCLK

•

79

B+

PW

SINT

28

DSP SINT

12

18

(D903)

SW

XRST

37

XRST

AVDD 10

REFERENCE

VREF

MD

4

S MON

1

S MON

VOLTAGE

13

MUTE

17

SECTION

PD

43

APC REF

SWITCHING

Q301

(Page 18)

SSB CLK

35

SBUS CLK

HP MUTE

70

SSB DATA

36

SBUS DATA

HP STB 71

S0

64

S0

KEY EN 26

S1

65

S1

RMC KEY

7

SLED

Q801

VOLTAGE MONITOR

IC552

XWAKE RMC 33

5

+

7

39

SLD 2 MON

RMC DTCLK 63

6

–

3

+

1

38

SLD 1 MON

2

–

S806

S807

S808

FOCUS/TRACKING COIL DRIVE,

17 XIN

DIGITAL MEGABASS

AVLS

HOLD

X601

0

1

2

NORM

LIMIT

SPINDLE/SERVO MOTOR DRIVE

IC551

16.9344MHz

16 XOUT

B+

VCC1

B+

(UNREG)

45

(Q907)

42

DBB0 29

TRK+

43

64

TF1

DBB1 30

40

PREDRIVE

AVLS SW 27

41

1

TR1

HOLD SW 23

TRK–

38

MD

MD

1

39

3

SET KEY

8

SECTION

SECTION

10

XWAKE SET

34

(Page 18)

(Page 17)

FCS+

11

FF1

OPEN CLS SW 32

2

MINIDISC

8

ADJUST 77

PREDRIVE

9

OPR LED 31

S809

MECHANISM

3

FR1

D802

BLOCK

FCS–

6

TAP801

OPEN/

TAP803

OPERATE

M902

7

CLOSE

CN551

S805

S804

S803

S802

SLED1+

(SLED)

5

62

57

53 SLD 1R CON

–

+

. >N

SLED1–

61

PREDRIVE

58

54 SLD 1F CON

RESET

7

60

56

68 SLD VCON

B+

VOL

IC803

(D901)

SLED2+

51

VDD

4

6

52

PREDRIVE

54

55 SLD 2R CON

MRST

9

3 OUT

SLED2–

Q908

8

50

VCC2

55

56 SLD2F CON

XREBOOT 78

VSS

5

D903

B+

B+

CLVN

1

33

+

46

(Q907)

B+

PWM/PFM CONTROL

32

47 CLV W MON

(UNREG)

34

–

IC903

Q905

+

UNREG MON

2

2

VDD

31

46 CLV V MON

POWER SUPPLY

35

–

EXT

5

M901

RM VCOM

44

VOLTAGE CONTROL

1

VOUT

+

30

45 CLV W MON

SWITCH

(SPINDLE)

36

–

Q906

Q907

CLVU

2

23

B+

16

48 CLV U CON

24

B+

CLVV

15

49 CLV V CON

Q904

VG

3

26

PREDRIVE

DECODER

(UNREG)

14

50 CLV W CON

(2/2)

B+

D901

29

CLVW

13

42 CLV V CON

Q904(1/2)

4

28

Q903

VG

2

VDD

4

VCC1

1

FB

EXT

5

2

VDD

TO EACH

OE

STANDBY

17

51 DRV VCON

VG CON 24

3

CE

VOUT

1

BLOCK

VCC2

Q901

5

EXT

TO BEMF

PWM/PFM CONTROL

BIAS

VG

COMPARATOR

IC902

PWM/PFM CONTROL

IC901

04

– 19 –

– 20 –

B+

(D903)

S801

B+ SWITCH

Q902

J301

i

GND

KEY

DATA

VDD

DRY BATTERY

SIZE "AA"

(IEC DESIGNATION R6)

1PC, 1.5V