Sony MDS-JB920 service manual 43, 44, BLOCK DIAGRAM – MAIN Section

MDS-JB920

6-3. BLOCK DIAGRAM – MAIN Section –

BUFFER	∙ SIGNAL PATH
	: PLAY (ANALOG OUT)
IC101	: PLAY (DIGITAL OUT)
VREF	: REC (ANALOG IN)	DIGITAL

A

ADDT

	A/D CONVERTER
	IC100
12	ADDT	DECIMATION/	ΔΣ	+	INLP	56
		LOW-CUT	MODULATOR	–	INLM

			: REC (DIGITAL IN)	DIGITAL INPUT SELECTOR	OPTICAL IN 1
	VREFL			IC300
		16
					OPTICAL
				OPT1 6
AOUTL–	+		RV760-1		RECEIVER
13	–		ANALOG		IC303
AOUTL+

(Page 42)

BCK	11	BCK1	OUTPUT INTERFACE	FILTER				55
LRCK	10	LRCK1		DECIMATION/			INRP 1		R-CH
					ΔΣ	+
				LOW-CUT	MODULATOR	–	INRM	2	R-CH
				FILTER
			MCKI	DPD
			15	16
				52

D/A CONVERTER	OVFLAG
IC200

12	AINL+		REC LEVEL	J100		DIGITAL
+		19								OPTICAL
	AINL–				B	IN	7 OUT	OPT2	5	RECEIVER
–			LINE AMP
		18		L					WAVE	IC302
			IC103	LINE IN	(Page 42)				SHAPER
			R-CH	(ANALOG)					IC301	DIGITAL
				R						OPTICAL IN2
			RV760-3
			DIGITAL	L				COAX	3
			REC LEVEL
				LINE OUT
			R-CH	(ANALOG)				COAX	4
				R						J300
CURRENT PULSE							SEL0	SEL1
										DIGITAL
IC204
							14			COAXIAL IN

DADT,

BCK,

LRCK

D

(Page 42)

OVERFLOW

DADT

3

DATA

DETECTOR

S/P

IIR&ATT

FIR

L.I.P.&ATT

NOISE

BCK

2

BCK

SHAPER &

LRCK

LRCK

REGISTER

4

47

MCLKI

TIMING

MODE

128FSO

54

CONTROL

CONTROL

PLM & BUFFER

L1+	21
L1–	20
L2+
	24
L2–	25
R1+	36
R1–	37
R2+		R-CH
R2–	33
	32
INIT	5

2

25

IN1+

I01+

1

SEL0

SEL1

24

IN1–

SWITCHING

I02–

2

BUFFER

MIX AMP

LOW-PASS

27

IN2+

CIRCUIT

I02+

5

IC241

IC243 (1/2)

FILTER

28

IN2–

I01–

4

IC243 (2/2)

DIGITAL

R-CH

OPTICAL OUT

MUTING

RV790

DIGITAL

OPTICAL

PHONE

C

OUT

CONTROL

Q200 – 203

TRANSCEIVER

CIRCUIT

LEVEL

(Page 42)

WAVE

IC304

MUTING

SHAPER

T301

IC305

CONTROL SWITCH

HEADPHONE

E

512FS

43	256FSO	CLOCK
	LVCKO		CLOCK
41		BUFFER
			GENERATOR	XIN

J800	Q702	J790
	AMP		J301
S-LINK	IC790	PHONES
			DIGITAL
CONTROL A1

(Page 42)

	SHIFT	LATCH	64FSI 64FSO	1024FS	29
ATT				CLOCK	XOUT 28
				BUFFER
6	7	8	48 40		X200
					45MHz
SWDT	SCLK

	EEPROM		R-CH			COAXIAL OUT
	IC171
	SDA	SCL	D703
SIRCS
		6
BUFFER	5			X801
Q800		D704	X800		SEL0	SEL1
			7MHz	32.768kHz

F

SWDT, SCLK

(Page 42)				87
REMOTE CONTROL				DALATCH
RECEIVER	6	RMC
IC761
				FLDATA FLCLK FLCS
				35 37 34
				70 69 68
	C772, R772			DA CP CS			RESET 67
	65	OSCI			FL/LED DRIVER
	OSC	P1	P3		IC771		COM23	COM24
	66			SEG01 – SEG35	AD1 – AD3	COM01 – COM22
		OSCO
		72 74		3 – 37	79, 80, 1	39 – 60	61	62
STANDBY	Q756			SEG35–	SEG38–	G22–	Q781, 782
D756	LED DRIVE						FL DRIVE
				SEG01	SEG36	G01	G23	G24
D758	LED DRIVE				FLUORESCENT
MEGA	Q758
					INDICATOR TUBE
CONTROL
					FL781

88

82

7

61

22 21

83

13

15

11

10

86 85

DARST

JOG0 A1OUT

KEY0A1IN

SDA

SCL

S.RST STB DVOL0 DVOL1

MUTE

XOUT

XIN

XT-OUT

XT-IN

OPT2/XOPT1 COAX/XOPT

MONO/ST

SOURCE

P.DOWN

SYSTEM CONTROLLER

JOG1

TIMER

IC800 (2/2)

– KEY3

2

1

97, 95 – 93

100

92

91

19

12 84

T701

+3.3V

POWER

+5V

TRANSFORMER

1

3

+5V

+7V

A

B

D/A CONVERTER (IC200) B+

REGULATOR

+7V

REGULATOR

RECT

(FOR ANALOG SECTION)

IC205

IC703

ROTARY

AUDIO

D715 – 718

ENCODER

S751

CIRCUIT

–7V

S746

TIMER

GND

SW

–7V

REGULATOR

AC

REC MODE

REC

+5V

+5V

IC702

4

5

(TO FL781)

A/D CONVERTER (IC100) B+

REGULATOR

STEREO

OFF

(FOR ANALOG SECTION)

IC102

–32V

–32V

RECT

MONO

(FL DRIVER (IC771) B–)

REGULATOR

D706

S713

PLAY

IC701

-AMS ±￿						LOADING MOTOR
						DRIVER (IC400) B+				AC IN
PUSH ENTER					+3.3V
							+3.3V	+5V	RECT
	S701 – 706, 711, 712,				MD MECHANISM DECK SECTION,		REGULATOR	REGULATOR
									D720, 721
	S714, 716, 722 – 726,			S741	DIGITAL IN/OUT CIRCUIT B+		IC192	IC705
		S731 – 734		INPUT	+5V
				ANALOG	MD MECHANISM DECK
					SECTION B+
			COAX (DIGITAL)

D700

D701

OPT1 (DIGITAL)

BACK UP +3.3V

6

BACK

3

RECT

BT701

VCC

OPT2 (DIGITAL)

D711, 712

05

LITHIUM

BATTERY

SYS +3.3V

5

SYS3.3

+5V

REGULATOR

D710

D709

IC700

A/D, D/A CONVERTER (IC100, 200) B+

4

ANA5

(FOR DIGITAL SECTION)

2

STBY

POWER DOWN

DETECT

12

S.RESET

IC704

– 43 – – 44 –