Sony MZ-R91 service manual Block Diagram A/D, D/A CONVERTER, Audio Section

6-2. BLOCK DIAGRAM – A/D, D/A CONVERTER, AUDIO Section –

MZ-R90/R91

6-3. BLOCK DIAGRAM – KEY CONTROL/DISPLAY/POWER SUPPLY Section –

(Page 24) B

OPTICAL

RECEIVER

VC B+	B+ SWITCH
	Q302

DIGITAL REC

J301

LINE IN

(OPTICAL)

G	OE				POWER CONTROL
(Page 24)		VC B+			IC901			OVER WRITE HEAD
								DRIVE CIRCUIT B+
		RF AMP (IC501), DSP (IC502),
								D905	L904
	RMC KEY	MOTOR/COIL DRIVE (IC601),		VC		VCIN
H					SWITCHING
		OVER WRITE HEAD DRIVE (IC603),	30		REGULATOR		31
(Page 26)		SYSTEM CONTROLLER (IC801),					29
		REMOTE CONTROL CIRCUIT B+

		SYSTEM CONTROLLER	VCON
		IC801 (3/3)	SWITCHING	L1
			REGULATOR	28
S807	ON	SYNC REC
	1		STEP-UP		SWITCHING
SYNCHRO REC				PWMVC
		RF1	PRE DRIVER		REGULATOR
				16

(LINE IN JACK)

+2.5V

B+ SWITCH

VR B+

REGULATOR

Q305, 306

IC304

J303

+2.5V

VC B+

MIC

REGULATOR

LINE AMP

(PLUG IN POWER)

IC305

IC302

A/D, D/A CONVERTER

35

38

VRDA

VRAD

IC301

LIN2

53

ADCL

PGAL

LIN1

(Page 24)

A

ANALOG REC

4

STDO

HIGH-PASS

A/D

47

48

SUB

RIN2

56

FILTER

CONVERTER

ADCR

PGAR

TRACTION

52

J304

43

42

RIN1

DADT, XBCK,

AUDIO

55

i/LINE OUT

(Page 24)

C

LRCK, FS256

DADT

STDI

INTERFACE

LOUT1

OPGAL

LOUT2

+

6

CONTROLLER

LINE OUT

XBCK

BCLK

DBB

D/A

33

34

LOW-PASS

37

LINE AMP

LRCK

3

LRCK

DPGA

CONVERTER

ROUT1

OPGAR

FILTER

ROUT2

36

IC303

ON/OFF SWITCH

+

2

Q101, 201

32

31

MUTING

VC B+

RVCC

FS256

MCLK

CLOCK

Q101, 201

BEEP TONE

1

DTCK

DIVIDER

BUFFER

CDWM 2V

SRDT, SWDT,

Q301, 303

CDWM DATA

F

SCLK

SWDT

CDTI

MUTING

LINE OUT ON/OFF

(Page 24)

18

CONTROL

KEY-R

SCLK

CCLK

CONTROL SWITCH

CONTROL SWITCH

16

REGISTER

RGND

SRDT

CDTO

Q308

Q307, 309

17

INTERFACE

(Page 24)

D

RESET

61

XRST

XCS

PD

15

62

110

111

117

RMC KEY

H

(Page 27)

ADAXCS

ADAXPD

MUTE

BEEP

18

XHP STBY

23

XOPT CONT

116

OPT DET

113

SYSTEM CONTROLLER

XJACK DET

114

XMIC DET

115

IC801 (2/3)

XCSNV

RTCCS

EXTAL

XTAL

TSBCLKCTL

TSBEDGE

SCK1

SI1

TSBSLV CTL

SO1

RMC DTCK

19

Q801

TSB SLV ON

34

CD TEXT COPY

DEETCT

119

10

46

45

101

41

72

70

48

71

X801

LEVEL SHIFT

SRDT

SWDT

SCLK

SRDT

SWDT

SCLK

16.9344MHz

Q802, 803

OFF

& PWM

Q904

S804

OFF

VSTB

VB

73

XHOLD SW

VBAKN

78

38

HOLD

VC

HOLD

XWK3

RMC KEY

85

33

FFCLR

XRST

VG B+

D901

L902

FFCLR

39

37

S803

SLEEP

SLEEP

40

36

MOTOR/COIL DRIVE

T MARK

CLK

SYSTEM

(IC601) B+

56

T.MARK

REG CTL PWM

64

43

VG

XWK2

CONTROL

STEP-UP

19

BATT B+

34

XWK1

DC/DC

SWVG

MOTOR/COIL DRIVE (IC601),

S806

WK DET

83

35

17

3

PROTECT

XWK4

CONVERTER

OVER WRITE HEAD UP/DOWN

(PROTECT DETECT)

HALF LOCK SW

84

32

MOTOR DRIVE (IC602) B+

S901

14

XGUN ON

VLD B+

VLD

VR B+

D906

L905

(BATTERY CASE)

11

VR

(BATTERY IN DETECT)

LASER APC CIRCUIT B+

VREG

REGULATOR

10

12

DRY BATTERY

S801

50

OPEN CLOSW SW

S802

VREG B+

SIZE “AA”

(OPEN/CLOSE DETECT)

25

(IEC DESIGNATION R6)

BP801

OPEN .

DSP (IC502) B+

VROUT

1PC. 1.5V

(FOR INTERNAL LOGIC)

(TEST)

XTEST

VC

SWITCHING

L2

60

RF1

+

CHARGE

VC PWM

66

24

REGULATOR

26

–

RECHARGEABLE

STEP-UP

RF2

BATTERY

PRE DRIVER

D907

SWDT, SCLK

(NICKEL-METAL)

E

& PWM

RF2

+

VR

NH-14WM 1.2V

VRM PWM

65

23

(Page 24)

–

SWITCH & LCD MODULE UNIT

SERON

58

15 SERON

VB

+

RF5

CHARGE ON

+

4

XRST

–

SWITCH

XRST

43

40

RESET SIGNAL

INM5

Q901 (1/2), 905

SDO

SWDT

GENEARTOR

3

CHARGE

POWER OFF

BATT B+

SCK

SCLK

CONTROL

RESET SWITCH

Q906

VC B+

CHARGE

LCD

RST

LCD RST

Q808

RS

LCD

22

CONTROL

DRIVER

2

STB

Q901 (2/2)

21

LCD STB

CS

20

XCS LCD

CHGB

CHGSW

XCHG

59

47

48

CHG

VB

INP3

MON

REC LED

RF3

+

44

69

REC LED

CHG MON

81

8

7

46

BATM

REC

–

5

COMPARATOR

VR B+

& BUFFER

PAUSE

PAUSE

4

89

DCIN 1

+2.5V

LINE FILTER

J901

PAUSE KEY

VRM MON

REGULATOR

LF901

DC IN 3V

IC902

!

REC

REC

88

REC KEY

GND SW

42

GROUND LINE

SWITCHING

Q902

SET KEY 1

86

SET KEY 1

4	3	2	1
DO	DI	SK	XCS

EEPROM

IC802

05

			REAL TIME CLOCK
3	4	2	7	IC804
SDO	SDI	SCK2	CS-RTC	VDD	2
			OSCOUT
		OSCIN
		9	8
			X802

32.768kHz

D804 D801

+

DC/DC

CONVERTER BATT B+

IC803, Q809

BACK-UP BATT B+

LEVEL SHIFT

Q804

LEVEL SHIFT

Q805

LEVEL SHIFT

Q806

TSB CLOCK

SWITCHING

Q807

•SIGNAL PATH

:PLAY (ANALOG OUT)

: REC (ANALOG IN)

: REC (DIGITAL IN)

	SET KEY 2	SET KEY 2
	87
	XWK1
BAT1	B UP BATT
	BACK UP BATT B+
LITHIUM
BATTERY
(FOR BACK UP)
05

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