Sony MDS-JB920 Block Diagram Main Section, ∙ Signal Path Play Analog OUT, Play Digital OUT

Page 41

MDS-JB920

6-3. BLOCK DIAGRAM – MAIN Section –

BUFFER	∙ SIGNAL PATH
BUFFER	: PLAY (ANALOG OUT)
IC101	: PLAY (DIGITAL OUT)
	: 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	OPTICAL IN 1
	VREFL	16		IC300
		16			OPTICAL
				OPT1 6	OPTICAL
AOUTL–	+		RV760-1	OPT1 6	RECEIVER
13	–		ANALOG		IC303
AOUTL+	–		ANALOG

(Page 42)

BCK	11	BCK1	OUTPUT INTERFACE	FILTER				55
				FILTER

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

D/A CONVERTER		OVFLAG
IC200

12	AINL+		REC LEVEL	J100		DIGITAL
+		19		J100						OPTICAL
+		19								OPTICAL
	AINL–				B	IN	7 OUT	OPT2	5	RECEIVER
–			LINE AMP		B		7 OUT	OPT2	5	RECEIVER
–		18	LINE AMP	L					WAVE	IC302
			IC103	LINE IN	(Page 42)				SHAPER
			R-CH	(ANALOG)					IC301	DIGITAL
			R-CH	R						OPTICAL IN2
										OPTICAL IN2
			RV760-3
			DIGITAL	L				COAX	3
			REC LEVEL	L				COAX	3
			REC LEVEL	LINE OUT
			R-CH	(ANALOG)				COAX	4
			R-CH	R						J300
CURRENT PULSE							SEL0	SEL1		J300
CURRENT PULSE										DIGITAL
IC204										DIGITAL
							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+	20
L2+	24
L2–	25
R1+	36
R1–	37
R2+	37	R-CH
R2–	33
	32
INIT	5
	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
ATT				BUFFER	XOUT 28
6	7	8	48 40		X200
					45MHz
SWDT	SCLK

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

F

SWDT, SCLK

(Page 42)				87
				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		DA CP CS	FL/LED DRIVER
	65	OSCI

	OSC	P1	P3		IC771		COM23	COM24
	66	P1	P3	SEG01 – SEG35	AD1 – AD3	COM01 – COM22	COM23	COM24
	66	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				FLUORESCENT
MEGA	Q758				INDICATOR TUBE
CONTROL					INDICATOR TUBE
CONTROL					FL781
					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 –

Image 41

Contents MDM-5A SpecificationsMDS-JE520 General SELF-DIAGNOSIS FunctionItems of Error History Mode Items and Contents Section Servicing Notes Table of ContentsDiagrams Varoitus Flexible Circuit Board RepairingVarning IOP JIG for Checking BD Board WaveformRecord Precedure REC/PLAY Checks Prior to Parts Replacement and AdjustmentsForced Reset Precedure Retry Cause Display ModeHexadecimal nBinary Conversion Table Front view Rear view Section GeneralLocation of Controls Page Page Case Section DisassemblyMain Board Front Panel SecitonSlider CAM Mechanism Section MDM-5ASW BOARD, Loading Motor M103 Base Unit MBU-5A, BD BoardPrecautions for USE of Test Mode Section Test ModeSetting the Test Mode Exiting the Test ModeDisplay Contents Mark Group Selecting the Test ModeMID Operating the Continuous Playback ModeNon-Volatile Memory Mode EEP Mode Functions of Other Buttons Test Mode DisplaysAuto gain display Not used in servicing Detrack check display Not used in servicingMeanings of Other Displays Display Contents When Lit When OffParts Replacement and Adjustment Section Electrical AdjustmentsPrecautions for USE of Optical PICK-UP KMS-260A Precautions for Checking Laser Diode EmissinonPrecautions for Adjustments Laser power meterLaser Power Check Temperature Compensation Offset CheckCheck Prior to Repairs Traverse CheckCD Error Rate Check Play Checking MO Error Rate CheckFocus Bias Check Self-Recording/playback CheckTemperature Compensation Offset Adjutment Initial Setting of Adjustment ValueLaser Power Adjustment Recording and Displaying the IOP InformationTraverse Adjustment Focus Bias Adjustment Auto Gain Control Output Level Adjustment Error Rate CheckCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points IC PIN Function Description Section DiagramsBD Board IC101 CXA2523AR RF AMP, FOCUS/TRACKING Error AMP Sens SrdtXrst SqsyXWE XrasMvci AsyoSfdr SrdrSprd SpfdMain Board IC100 CXD8607N A/D Converter VDD1 AvddlTEST2 LvddMain Board IC800 M30610MCA-264FP System Controller MDS-JB920 ∙ Signal Path Block Diagram Servo SectionREC Analog REC DigitalPlay Digital OUT Block Diagram Main Section∙ Signal Path Play Analog OUT Circuit Boards Location Printed Wiring Boards BD Section MDS-JB920 53 for Waveforms. See page 70 and 71 for IC Block Diagrams Schematic Diagram BD /2 SeeWaveforms BD board Main board Disp board MDS-JB920 MDS-JB920 MDS-JB920 MDS-JB920 Other layers pattern Side a US, CND Schematic Diagram Panel Section See page 54 for Waveforms Printed Wiring Board BD Switch Section Schematic Diagram BD Switch SectionIC Block Diagrams BD Board IC101 CXA2523ARIC152 BH6511FS-E2 IC121 CXD2654RIC101 CXA8054M Main Board IC100 CXD8607NIC203 CXA8042ASIC200 CXD8767N SN74HCU04ANS-E20 SN74HC153ANSChassis Section Section Exploded ViewsSupplied with RV760 Front Panel Section209 4-988-466-21 Spring ELECTROSTATIC, Leaf 206 201204 205 Base Unit Section MBU-5A Section Electrical Parts List Diode TANTAL. ChipDiode F1J6TP CXA2523ARDisp Main C252 Mylar HZ7.5CP-TK HZS6C1LCXA8042AS SN74HC153ANS390 Coil with Core Vibrator Main PSWLED SEL6210S-TH10 Standby LED SEL6810A-TH10 Mega Control TransistorSW VOL Sony Corporation