Sony HCD-M70 Schematic

Tape player section

Recording system 4-track 2-channel stereo Frequency response 50 - 13,000 Hz (±3 dB),

using a Sony TYPE I cassette

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range North American model: 87.5 - 108.0 MHz

(100-kHz step)

Other models: 87.5 - 108.0 MHz

(50-kHz step) Antenna FM wire antenna Antenna terminals 75 ohms unbalanced Intermediate frequency 10.7 MHz

AM tuner section

Tuning range Pan-American model: 530 - 1,710 kHz

(with the tuning interval

set at 10 kHz)

531 - 1,710 kHz

(with the tuning interval

set at 9 kHz) European model: 531 - 1,602 kHz

(with the tuning interval

set at 9 kHz)

Amplifier section For the U.S. model AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

With 6-ohm loads, both channels driven, from 70 - 20,000 Hz; rated 18 watts per channel minimum RMS power, with no more than 0.9% total harmonic distortion from 250 milliwatts to rated output.

North American model:

Continuous RMS power output (reference):

20 + 20 W (6 ohms at 1 kHz, 10%

THD) Total harmonic distortion less than 0.07% (6 ohms at 1 kHz, 12 W)

European model:

DIN power output (rated): 15 + 15 W

(6 ohms at 1 kHz, DIN) Continuous RMS power output (reference):

20 + 20 W

(6 ohms at 1 kHz, 10%

THD) Music power output (reference):

40 + 40 W

DIN power output (rated): 15 + 15 W

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

18 + 18 W (6 ohms at 1 kHz, 10%

THD) The following measured at 220 V AC, 60 Hz DIN power output (rated): 12 + 12 W

(6 ohms at 1 kHz, DIN) Continuous RMS power output (reference):

15 + 15 W

(6 ohms at 1 kHz, 10%

THD) Inputs

AUDIO IN MD (VIDEO) (phono jacks):

Sensitivity 500/250 mV,

impedance 47 kilohms Outputs

OPTICAL DIGITAL OUT (CD):

Optical PHONES: Accepts headphones with

an impedance of 8 ohms

or more SPEAKER: 6 ohms

Other models:

The following measured at 230 V AC, 60 Hz

CD player section

System Compact disc and digital

audio system Laser Semiconductor laser

(λ = 780 nm)

Emission

duration: continuous Wavelength 780 - 790 nm Frequency response 2 Hz - 20 kHz (±0.5 dB)

HCD-M70

SERVICE MANUAL

Ver. 1.3 2005.03

HCD-M70 is the Amplifier, CD player, Tape Deck and Tuner section in CMT-M70/M70K.

CD Section

TAPE Section

US Model

Canadian Model

AEP Model

UK Model

E Model

Austr alian Model

Model Name Using Similar Mechanism HCD-CP100 CD Mechanism Type CDM55F-K6BD41A Optical Pick-up Name KSS-213DCP

Model Name Using Similar Mechanism NEW

9-873-633-04 Sony Corporation

SPECIFICATIONS

MICRO Hi-Fi COMPONENT SYSTEM

– Continued on next page –

HCD-M70

6-1. BLOCK DIAGRAM – CD SERVO Section –

SECTION 6

DIAGRAMS

PICK-UP BLOCK

(KSS-213DCP)

DETECTOR

LASER DIODE

OPTICAL

I-V AMP

VCC

7 D+5V

4

2

1

5

10

6

LD

LDPD

PD

AUTOMATIC

POWER

CONTROL

Q101

FOCUS/TRACKING ERROR AMP

A

5

B

6

C

7

D

8

F

10

FI-V AMP

E

11

EI-V AMP

LD

3

APC LD

AMP

APC PD

AMP

PD

4

RF AMP

IC103

RF

SUMMING

AMP

ERROR AMP

FOCUS

TRACKING

ERROR AMP

RF EQ

AMP

RFO

LD ON

HOLD SW

FILTER

54 56 53 55

ERROR

FILI

PCO

FILO

CLTV

CORRECTOR

16k

RAM

RFAC

16

FE

14

TE

13

22

21

ASYMMETRY

51

CORRECTION

ASYI

49

ASYO

48

XLON

SUBCODE

PROCESSOR

CPU INTERFACE

SQSO

DIGITAL

PLL

SENS

DEMODULATOR

SERVO AUTO

SEQUENCER

XLAT

SCOR

CLOK

EFM

DATA

SQCK

2576208114

DIGITAL SIGNAL PROCESSOR,

DIGITAL FILTER, D/A CONVERTER

IC101 (1/2)

D/A

INTERFACE

INTERNAL BUS

SERVO

INTERFACE

MIRR/DFCT/FOK DETECTOR

SSTP

IC101 (2/2)

SCLK

9 27

TO

S101

(LIMIT)

DIGITAL

SERIAL

IN

INTERFACE

DIGITAL

CLV

MDP

26

OUT

NOISE SHAPER

XRST

3

DIGITAL

FILTER

INTEGRATOR

CLOCK

GENERATOR

TIMING

LOGIC

XTAL

X101

16.9344MHz

Q800

Q800, 801

CD ON SWITCH

PWM

&

XTAO

6766

Q801

D OUT

AOUT1

AOUT2

60

70

77

AIN1

515171

AIN2

76

BUFFER

CLK

SQSO

LOUT1

LOUT2

72

75

OPTICAL

TRANSCEIVER

IC321

R-CH

DIGITAL OUT (CD)

CD-L

CLK, SQSO

OPTICAL

A

B

(Page 16)

(Page 15)

2-AXIS DEVICE

(TRACKING)

(FOCUS)

M102

(SLED)

M101

(SPINDLE)

10

CD-DATA

11

C-SQCK C-LATCH

19

C-SENSE

18

C-SCOR

100

C-RST

86

13

HOLD

41 39 4340

FE

TE

SE

RFDC

SPINDLE/SLED MOTOR DRIVE, FOCUS/TRACKING COIL DRIVE

IC102

CH2OUTF

12

CH2OUTR

11

CH1OUTF

14

CH1OUTR

13

CH3OUTF

17

MM

18

15 16

CH3OUTR

CH4OUTF CH4OUTR

MOTOR

COIL

DRIVE

COIL

DRIVE

MOTOR

DRIVE

MOTOR

DRIVE

CH2 FIN CH2RIN

CH1FIN

CH1RIN

CH3FIN

CH3RIN

CH4SIN

5 6

2 3

24 23

25

TRDR

31

TFDR

30

FRDR

33

FFDR

32

SFDR

28

SRDR

29

A/D

CONVERTER

PWM GENERATOR

FOCUS/TRACKING/SLED

SERVO DSP

FOCUS/TRACKING/SLED

TO

SERVO INTERFACE IC101 (1/2)

MIRR/DFCT/FOK

DFCT

FOK

23 2224

DETECTOR

MIRR

DIGITAL SERVO

PROCESSOR

IC101 (2/2)

R-CH : R-ch is omitted due to same as L-ch.

SIGNAL PATH

: CD PLAY (ANALOG)

: CD PLAY (DIGITAL OUT)

SYSTEM CONTROLLER

IC801 (1/3)

CD-ON

C

(Page 16)

MUTE

20

1414

6-2. BLOCK DIAGRAM – TUNER/TAPE DECK Section –

TU1

TUNER UNIT

FM ANT

ANT GND

AM ANT

4

L-CH

3

R-CH R-CH

5

TUNED

9

DI

8

CK

10

CE

7

DO

TUNER ON SWITCH

Q804

(Page 16)

(AEP, UK)

FM75Ω

(EXCEPT AEP, UK)

AM

TU-ON

D

ANENNA

17

TUNED

5

TU-DATA

8

C-CLK/TU-CLK

31

TU-CE

23

TU-COUNT

SYSTEM CONTROLLER

IC801 (2/3)

MOT-CON

SOL-CON

SENSOR

T-MODE

TC-SW

HCD-M70

TU-L

(TAPE DECK BLOCK)

30

29

1

6

32

CAPSTAN/REEL

MOTOR DRIVE

Q341, 343

TRIGGER

PLUNGER DRIVE

Q342, 344

MM

(CAPSTAN/REEL)

E

(Page 16)

(Page 14)

CLK, SQSO

B

L-CH

R-CH

HRPE901

(RECORD/PLAYBACK/ERASE)

ERASE

RV201

REC BIAS

(R)

MUTING

Q100, 101

REC BIAS

BIAS OSC

T401

DET AMP

Q302

RV101

(L)

1

FM DET MUX

(AEP, UK)

R-CH

4

X301

4.332MHz

R-CH

REC BIAS

SWITCH

Q402, 403

X1 X0

13 14

MUTING

CONTROL SWITCH

Q404, 405

RDATA

COM +8V

2

16

RCLK

RDS DECODER

IC326

D321

T101

BIAS

TRAP

34

16

BIN (L)

REC-OUT (L)

CLK

SQSO

REC/PB EQ AMP, ALC

IC401

EQ

R-CH

ALC

R-CH

EQ-OUT (L)

REC-IN

12

C-SQSO/RDS-DATA

2

RDS-IN

28

(L)

24

ALC

(L)

23

D401

27

TAI (L)

14

11

A/B

ALC21REC/PB

REC-MUTE20L-MUTE

16

1513 14

ALC

REC MUTE

MUTE

TRAY-OPEN

TRAY-CLOSE

TRAY-SW

PB-OUT

LOADING

MOTOR DRIVE

IC320

95

6 5

INPUT2 INPUT1

OPEN

CLOSE

94

33

10

OUT2

2

OUT1

DISC TRAY

OPEN/CLOSE DETECT

M901

MM

(LOADING)

S1

R-CH : R-ch is omitted due to same as L-ch.

SIGNAL PATH

: TUNER (FM/AM)

: TAPE PLAY

: REC

(L)

26

TC-L

REC-L

F

G

(Page 16)

BIAS OSC

Q401

1515

HCD-M70

6-3. BLOCK DIAGRAM – MAIN Section –

REC-L

(Page 15)

(Page 14)

(Page 15)

G

A

F

E

AUDIO IN

MD (VIDEO)

X800

32.768KHz

X801

4.19MHz

CD-L

TC-L

TU-L

SJ302

L

R

TX

92

93

TEX

XTAL1

40

EXTAL1

39

R-CH

54 – 85

SEG0 – SEG31

R-CH : R-ch is omitted due to same as L-ch.

SIGNAL PATH

: TUNER (FM/AM)

: TAPE PLAY

: REC

: CD PLAY

: MD (VIDEO)

(Page 15)

(Page 14)

TU-ON

D

CD-ON

C

LIQUID CRYSTAL

DISPLAY

LCD801

COM0 – COM3

D814

(STANDBY)

D812

TAPE

50 – 53

L4

11

L3

12

L2

13

L1

14

S801 – 820

LED DRIVE

Q810, 811

LED DRIVE

Q808

INPUT

LSELO

SELECT SWITCH

REMOTE CONTROL

RECEIVER

IC802

3

SIRCS

10

98

36 – 34

STAND-BY LED

TC-ON96

LIN

VOLUME

9

CONTROL

CPU

INTERFACE

DI

CL2CE

301

88

28

87

SCK

SDA

AU-CE

SYSTEM CONTROLLER

IC801 (3/3)

KEY1 – KEY3

TONE

CONTROL

INPUT SELECT SWITCH,

ELECTRICAL VOLUME,

TONE CONTROL

IC323

97AU-MUTE

22AMP-MUTE

24H/P CHK

9SPK PROTECT

99

WP

RST

38

26

DSG

CD-SYNC

27

25TU-ON

15CD-ON

7

REG-CON

LOUT

5

LED DRIVE

Q807

LED DRIVE

Q809

MUTING

CONTROL SWITCH

Q312, 313

WAKE UP

SWITCH

Q802, 803

RESET SIGNAL

GENERATOR

IC803

D811

DSG

D813

CD SYNC

LED DRIVE

Q806

LED DRIVE

Q805

SW +5V

U-COM +5V

D804, 805,

D807, 808

(LCD BACK LIGHT)

D811

TUNER

D809

CD

MUTING

Q100

POWER ON

MUTING

Q330

TC +5V

CD +5V

D309

R-CH

D801

D802

COM +12V

REGULATOR

HEADPHONE AMP

IC324

IN+

3

4

IN+ MUT

MUTE STBY

R-CH

BACKUP +5V

COM +8V

+5V

Q309

CD +8V

TU +9.5V

TUNER ON

SWITCH

Q303, 304

+5V

REGULATOR

Q306

CD ON

SWITCH

Q307, 308

STANDBY/MUTE

10

9

REGULATOR

+8V

REGULATOR

IC304

+8V

REGULATOR

IC306

+9.5V

REGULATOR

Q301

+9.5V

REGULATOR

Q305

R-CH

MOS GAIN & LEVEL SHIFT

ING STAGE

R-CH

+5V

Q901, 903

COM +12V

MUTING

Q408, 409

OUTPUT

D917

+12V

REGULATOR

Q355

MOS

STAGE

AMP +16V

AMP – 16V

SHORT

CIRCUIT

PROTECTION

POWER AMP

IC101

RECT

D910 – 913

OUT

14

RECT

D906 – 909

RECT

D902 – 905

POWER ON/OFF

RELAY DRIVE

Q902 Q902

R-CH

DC DETECT

Q310, 311

T901

SUB POWER

TRANSFORMER

T902

MAIN POWER

TRANSFORMER

RY901

R-CH

J301

PHONES

+

L

–

R

+

(EXCEPT Singapore)

SJ301

SPEAKER

IMPEDANCE

USE 6 – 16Ω

VOLTAGE

SELECTOR

S901

(Singapore)

(AC IN)

1616

6-6. SCHEMATIC DIAGRAM – CD Board – • See page 25 for Waveforms. • See page 32 for IC Block Diagrams.

HCD-M70

(Page 27)

•Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY

: Impossible to measure

∗

1919

The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.

Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une pièce portant le numéro spécifié.