TECHNICS SL-EH570 Service Manual

OPTICAL PICKUP

+B2

SEMICONDUCTOR

LASER

PHOTODETECTOR

EE

D

C

A

B

D

C

F F

Q701

LASER

POWER

DRIVE

+B2

AN8885SBE1V

IC701

SERVOAMP

LPD

6

TJ701

89

RF RF IN CSBRT CEA

18

DEFLVL

+B2

10

OFTR

RFEQ1

7

LD

RFEQ2

PDA

4

AMP GCA BCA

NRF
DET.

SUBTRA-

CTOR

BDO

+B2

11

3TENV

ENV

OFTR

BDO

/RFDET

FEN

FE OUT

19
17
12
15
25

24

RFENV

OFT

BDO

/RFDET

FE

VREF

PDB

5

PDE

1

PDF

2

BAND

GAP

LDON

13

16

LDON

AMP GCA BCA

AMP GCA

AMP GCA BCA

PDOWN

21

EQSW

BCA

GCTL

20 27

FCLK

TBAL

TBAL

TEN

22

SUBTRA-

CTOR

TE OUT

23

TE

VREF

Vcc

VCC

FBAL

28

GND

3

14

+B2

FBAL

VREF

VREF

26

VREF

FOCUS COIL

TRACKING COIL

M701

TRAVERSE

MOTOR

M702

SPINDLE

MOTOR

F+

F-

T+

T-

M

M

22

D4-

17

D4+

18

D3-

15

D3+

14

D1+

12

D1-

11

D2+

14

D2-

13

9

PGND1

20

PGND2

FOCUS

COIL

DRIVE

TRACKING

COIL

DRIVE

TRAVERSE

MOTOR

DRIVE

SPINDLE

MOTOR

DRIVE

RESET

SIGNAL

GENERATOR

/RST

VREF

IN4

IN3

IN1

IN2

PC2

PVcc1

PVcc2

25

26

6

3

4

8

+B1

21

AN8739SBE2

FOCUS COIL / TRACKING

COIL / TRAVERSE MOTOR /

SPINDLE MOTOR DRIVE

IC703

FOD

TRD

TVD

ECS

ECM

PC

1

70

+B2

66
67
13

BLKCK

62
56

55

68

+B2

SQCK

SUBQ

80
14
15
53
48
52
41

DSLF2

47

46
44

+B2

76
78

MLD

MCLK MCLK

MDATA

+B2

STAT

9
7
8

45

17

79

54
49
61

IOSEL

CLVS

CRC

BLKCK

/CLDCK

SBCK

SUBC

DEMPH

SSEL

SQCK

SUBQ

PCK

PLLF

EFM

PLLF2

DSLF

DRF

ARF

RSEL

PSEL

MLD

MDATA

IREF

STAT

MSEL

VCOF2

VCOF

BYTCK

BUFFER

SUBCODE

DSL / PLL VCO

DSL / PLL VCO

MICRO COMPUTER

VCO

69

BUFFER

CD-TEXT

EFM DEMODULATION/

SYNC INTERPOLATION

SUBCODE DEMODULATION

INTERFACE

TIMING

GENERATOR

PITCH

CONTROL

RESY

MN662790RSCAQ-P

SERVO PROCESSOR / DIGITAL SIGNAL PROCESSOR

DIGITALFILTER/ D/A CONVERTER

IC702

+B2

72

450 60

DVDD1

DIGITAL DEEMPHASIS

16k

SRAM

CIRC ERROR

CORRECTION/

DEINTERLEAVE

AVDD2

VDD

AVDD1

DIGITAL FILTER

8 TIMES OVERSAMPLING/

DIGITAL AUDIO

INTERFACE

DIGITAL AUDIO

INTERFACE

INTERPORATION/

SOFT MUTING/
ATTENUATION

SERVOCPU

77 71

VCC5V

DIGITAL

5745157

DVss1

AVss1

/TEST

PWM

1 BIT DAC

PWM LOGIC

PWM

Vss

AVss2

(R)

(L)

D/A

CONVERTER

OUTPUT

PORT

75

OUTR

OUTL

FLAG

IPFLAG

TX

ECM ECM

ECS ECS

PC

LRCK

SRDATA

BCLK

DMUTE

DSLF2 DSLF2

KICK

TRV

VREF VREF

TVD TVD

TRD TRD

FOD FOD

TBAL TBAL

FBAL FBAL

/TLOCK

/FLOCK

Rch

73

65
64

6

24
25
23

2
3

1
16
42
26
21
29
22
27
28
31
30
12
11

PC

A/D

CONVERTER

CSEL

FCLK

FCLK

20

X2 OUT

59 58

X701

(16.9344MHZ)

X1 IN

FE

32 33 34

FE

TE

TE

SMCK

19

63

RFENV

RFENV

INPUT PORT

TRCRS

VDET

37 35 39

BDO

BDO

SERVOTIMING

GENERATOR

OFT

/RFDET

38 36

/RFDET

OFT

WVEL

SENSE

10 43 40

LDONLDON

/RST

18

/RST