Sony MDX-CA680 service manual Block Diagram Servo Section, Efm/Acirc Encoder/Decoder

MDX-CA680/CA680X

4-1. BLOCK DIAGRAM – SERVO Section –

DIGITAL SIGNAL PROCESSOR,

EFM/ACIRC ENCODER/DECODER,

SHOCK PROOF MEMORY CONTROLLER,

ATRAC ENCODER/DECODER

IC301 (1/2)

FILTER

OPTICAL PICK-UP BLOCK		48	47			RF AMP,
		MORFO	MORFI		FOCUS/TRACKING ERROR AMP
(KMS-241C)						IC302
I	I			RFO	AGCI	RF AGC	RF
1		RF AMP
J	J			46	40	& EQ	38
2

		WBL	EQ
	B.P.F.		AUX
			33
F	3T	PEAK &	PEAK
	TEMP		37
	B	BOTTOM	BOTM
			36
	WBL

100	EFMO
60	FILI
59	PCO	PLL
62	CLTV

61FILO

53	ASYO
54	ASYI	COMPA-
	RFI
57		RATOR

EFM/ACIRC ENCODER/DECODER

15

TX

SHOCK PROOF MEMORY CONTROLLER ATRAC ENCODER/DECODER

	ADDT	25
SAMPLING	DATAI	22
RATE	XBCKI
CONVERTER		24
	LRCKI
		23
DIGITAL	DIN0 19
AUDIO	DIN1	20
INTERFACE	DOUT	21

DADT		DATA
26		BCK
		LRCK
		256FS
28 27 29
XBCK	LRCK FS256	OSCI
	CLOCK		16
		OSCO
GENERATOR			17

•SIGNAL PATH

: MD PLAY

DATA, BCK,

LRCK, 256FS

A

(Page 25)

1024FS OSC	X301
IC304	45MHz

C	B
I	J		AT	B.P.F. ADFM 29	30 ADIN	ADFG 32
D	A
	A	A	AMP
	4	B		ABCD		ABCD 35
	5		I-V
		C
E	6		AMP	AMP

ADFG	ADIP
78	DEMODULATOR/
	DECODER

SUBCODE

PROCESSOR

INTERNAL BUS

D0 – D3 49, 48, 50, 51 1, 2, 24, 25 D0 – D3

DETECTOR	7	D		FOCUS		FE
				ERROR AMP		34
C
D
E	8	E				TE
			I-V	TRACKING		26
F		F				SE
			AMP	ERROR AMP
	9					28
				COMMAND	EQ	3T WBL

79 F0CNT	SPINDLE
	SERVO

SPFD	SPRD	DQSY	SQSY
94	93	12	11

+3.3V

			CPU
		INTERFACE
XINT	SENS SRDT		SWDT	SCLK	XLAT
14	9	8	5	6	7

MONITOR

CONTROL

MNT0 MNT1 MNT2 MNT3

1 2 3 4

– A09	45	5
A00	36 – 40,	14 – 18,	– A09
	31,	12,	A00
	34 –	9 –

D-RAM

IC307

	ILCC	AUTOMATIC	APC	LD/PD
		POWER CONTROL
			11	AMP	SERIAL/PARALLEL
		Q302				V-I	F0CNT
PD	LD				CONVERTER,	CONVERTER	20
					DECODER
LASER DIODE
	RM		PD	APCREF	SWDT SCLK XLAT
			10
				12	16 17 18

713

11 15 17

LEVEL SHIFT

IC502 (1/2)

9 5 3

	XOE	43	22	OE
2 4 6 8	XWE
		47	3	WE
	XRAS
LEVEL SHIFT		46	4	RAS
	XCAS
		44	23	CAS
IC502 (2/2)
18 16 14 12				MD-RST,
	MD-RST			DEEMP	B
	DEEMP

FOCUS/TRACKING COIL DRIVE,								PEAK HOLD	ABCD
SPINDLE/SLED MOTOR DRIVE
								Q301
		IC303
				16
				PSB
		6	OUT4F	IN4R	SPFD
M901	M				3	83	10	13	67 65 66 75 74 63 64
					4 SPRD
(SPINDLE)		8	OUT4R	IN4F
						APCREF	XRST	RECP	AUX1 ABCD FE TE SE PEAK BOTM
								AUTOMATIC
								POWER
		27	OUT2F	IN2F	29	SFDR		CONTROL
M902	M					92			ANALOG MUX
(SLED)		25	OUT2R	IN2R	30	SRDR
						91
							GENERATOR		A/D CONVERTER
2-AXIS								DIGITAL SERVO
								SIGNAL
DEVICE FCS+						FFDR			FROM CPU
		21	OUT1F	IN1F	19			PROCESS
						88			INTERFACE
		23	OUT1R	IN1R	18	FRDR	PWM
						89			XLRF

			TH501
		X501
		10MHz
59	31	32	39	62
MD-RST	EXTAL	XTAL	TEMP	SQSY
		EJECT	LOAD
		7	6
		5	4
		RIN	FIN
		LOADING
		MOTOR DRIVE
		IC305

		SWDT SCLK	XLAT
55	54 52	45 51 64
CC-XINT	SENS MD-SI	MD-SO	MD-CKOMD-LAT
	LIMIT-IN		E-SW
	56		11

(LIMIT)

REFERENCE VOLTAGE

SLOCK

XBUSY

SHOCK

FOK

26 27 28 29	66
MNT0 MNT1 MNT2 MNT3	DEEMP	EJT-OK	57
MD MECHANISM CONTROLLER
IC501 (1/2)
SW		A-MUTE	67
C-
63
CHUCKING	LOADING
DETECT	DETECT
ON : When completion	ON : When a disc loading start
of a disc loading	and a disc eject completion

(Page 25)

EJKT

C

(Page 25)

ATT

D

(Page 25)

(TRACKING)	(FOCUS)					AUTO	80
							CKRF
						SEQUENCER	81
							DTRF
	FCS–				TFDR		82
	TRK+	OUT3F	IN3F	14
	12				86	DIGITAL SERVO
	TRK–	OUT3R	IN3R	15	TRDR
	10				85	SIGNAL PROCESSOR
						IC301 (2/2)

OUT1	OUT2	VREF 6
1	7

M

M903

(LOADING)

REGULATOR

Q303

LOAD+6V

23 23