Sony MDX-61 service manual Servo section

•IC Block Diagrams

– SERVO section –

IC200

CXD2535CR-1

AVSS

ADRB

ADRT

AVDD

BIA2

ADIO

VC AUX FE ABCD BOTM

PEAK

FILO FILI PCO CLTV

AVSS

RFI

BIAS

ASYI

ASYO

DVDD

DIFO

DIFI

DICV

75

74

73

72

71

70

69 68 67 66 65 64

63 62 61 60

59

58

57

56

55

54

53

52

51

50

DVSS

DIN PLL

49

DIPO

SE

76

ANALOG MUX

34 MHz

COMP

(22 MHz)

48

TEST2

PLL

TE

77

OP AMP

ECC

47

MVC1

TENV

78

A/D

ENCODER/

46

RAOF

CONVERTER

DECODER

MID

79

REGISTER

EFM

APC

80

MODULATOR

45

EFMO

TEST1

81

32K RAM

ADFG

82

TIMING GENERATOR

EFM

44

XPLCK

DIGITAL PLL

TS25

83

REGISTER

SERVO DSP

EFM

43

GFS

LDDR

84

DEMODULATOR

EFM SYNC

DETECTOR/

42

GTOP

TRDR

85

TRACKING PWM

TRACKING SERVO

PROTECTOR

41

WFCK

TFDR

86

FOCUS PWM

FOCUS SERVO

FFDR

87

SLED PWM

SLED SERVO

40

RFCK

DVDD

88

– MAIN section –

IC501		HM51W4400TT6-8
D1	1			CLOCK OSC			26	GND
D2	2						25	D4
XWE	3						24	D3
XRAS	4				(4) INPUT		23	XCAS
NC	5		A0–A9	COLUMN DECODER		BUFFER	22	XOE
NC	6						21	NC
NC	7			SENSE REFRESH AMP			20	NC
A9	8						19	NC
				INPUT/OUTPUT CONTROL SWITCH
A0	9	ADDRESS BUFFER			(4) OUTPUT		18	A8
A1	10		A0–A9				17	A7
				MEMORY CELL
A2	11		DECODERROW			BUFFER	16	A6
				(4194204 BIT)
A3	12						15	A5
VDD	13						14	A4

		PWM GENERATOR						39	WDCK
FRDR	89				SUBCODE Q	GENERATOR			DVDD
								38
					READER/
FS4	90
					GENERATOR			37	XBCK
SRDR	91		ADIP	ADIP				36	MCLK
SFDR	92					TIMING
			DEMODULATOR	DECODER			CLOCK	35	XTAI
SPRD	93						GENERATOR	34	XTAO
SPFD	94	DIGITAL						33	LRCK
DCLO	95	CLV	APC COMP./	APC PWM				32	BCK
		PROCESSOR			SUBCODE
DCLI	96		FILTER	GENERATOR	P~W			31 C2PO
					PROCESSOR
XDCL	97					AUDIO		30 DTO
						DATA
			SERVO AUTO	SENS		CONTROL		29	DTI
			SEQUENCER	CONTROL
							DIGITAL	28	DIDT
								27	DODT
							AUDIO
OFTRK	98	OFTRK/DFCT/					IN/OUT	26	DOVF
		FOK/C OUT/

IC550 CS4330-KSR-H
SDATAI	1	SERIAL INPUT	VOLTAGE REFERENCE
EM/SCLK	2		INTERPOLATOR			8	AOUT L
		INTERFACE			ANALOG
LRCK	3					7	VA+
					LOW-PASS
			DELTA-SIGMA	DAC		6	AGND
					FILTER
		DE-EMPHASIS	MODULATOR			5	AOUT R
MCLK	4

IC700, 701		LB1638M
GND	1		10	N.C.
IN1	2	LOGIC	9	OUT1
		CONTROL	8	VS
VCC	3		7	OUT2
IN2	4
GND	5		6	N.C.

COUT	99	SHCK/TEOK	SERVO	CPU I/F	PEAK
		PROCESSOR	CONTROL
DVSS	100				DETECT

– POWER section –

IC900 MM1284XFFE

IC950 TL1451ACDB-E20

	1	2	3	4	5	6			7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25
	TEOK	FOK	DFCT	SHCK	SSTOP	WRPWR			DIRC	SWDT	SCLK	XLAT	SRDT	SENS	ADSY	SQSY	DQSY	XRST	SBOCK	SBODT	SBIOT	DOUT	DIN	FMCK	ADER	REC	DVSS
IC300	MPC17A38ZVMEL										RO1	PGND	PGND				RO2	PGND						RO3	PGND	PGND		RO4	PGND
			VG				VD	VD	VD	FO1				FO2					VD	VD	VD	FO3					FO4
			36				7	12	16	8	11	9	10	15			13	14	21	25	30	29		26	27	28	22	24	23
G	1								DRIVER						DRIVER						DRIVER						DRIVER
			DC/DC
		CONVERTER
									PRE-DRIVER						PRE-DRIVER						PRE-DRIVER						PRE-DRIVER
	VC						VC						VC						VC							VC
		CLOCK
			CLK						CONTROL						CONTROL						CONTROL						CONTROL
		DETECTOR
							VC						VC						VC							VC
	VC
		2	3			34			6	5	33					17	18					31		32			20	19	4	35
		VC	CLK			PS			FI1	RI1	OE					FI2	RI2					FI3		RI3			F/R4	PI4	GND	GND
																– 31 –

BUS ON OUT

BUS ON INPUT

GND

BUS CLK

VREF

BUS DATA

BUS RESET

1	SW	14	VCC
2	SW	13	BUS ON
3		12	LINK OFF
4		11	CLK OUT
5
6		10	DATA OUT
		9	DATA IN
7	RESET	8	RESET
	SW

REF OUT	S.C.P	NON-INV- INPUT2	INV-	INPUT2	FEED BACK2	DEAD TIME	CONTROL2	OUT2	VCC
16	15	14	13		12	11		10	9
VERF.
+2.5V	VCC			–
REFERENCE				+
VOLTAGE				ERROR			PWM
				AMP2			COMPA-
+2.5V					VERF		RATOR2		OUTPUT2
SHORT
CIRCUIT		VERF		VERF
PROTECTION
COMPARATOR
+									OUTPUT1
+		S	R	R
–
VREF/2		LATCH		U.V.L.O			PWM
							COMPA-
							RATOR1
TRIANGLE				+
				–
OSCILLATOR
				ERROR					GND
1	2	3		AMP1		6		7	8
				4	5
CT	RT	NON-INV- INPUT1		INV- INPUT1	FEED BACK1	DEAD TIME	CONTROL1	OUT1	GND
– 32 –