Sony MZ-R91 service manual MZ-R90/R91 SECTION DIAGRAMS

MZ-R90/R91

SECTION 6

DIAGRAMS

OVER WRITE HEAD DRIVE

IC603

6-1. BLOCK DIAGRAM – SERVO Section –

HR601	OVER WRITE
	HEAD DRIVE
OVER WRITE HEAD
	Q601, 602

OPTICAL PICK-UP BLOCK
	(LCX-2R)
						RF AMP, FOCUS/TRACKING ERROR AMP
						IC501
DETECTOR
			JX	10	JX		RF
			JY	11	JY	RF		33
				8	IY	AMP	PEAK
JX	JY				IX			29
				9		PEAK/	BOTM
			B			BOTM		28
C	B					ABCD	ABCD
D	A				B			41
		I-V		14		AMP
			A				ADFG
					A
		AMP		12		ADIP		21
					D
				6
IX	IY				C	FOCUS	FE
				5				42
						ERROR AMP
			IY			TRACKING	TE	1
			IX				OFTRK
						ERROR AMP		26
			D
			C			TON
LASER DIODE						S-MONITOR	S-MON	43

HB

10

HA

11

COSC

18

SAW.

GEN.

EFM	EFM	14
LOGIC
	CK	19

OSC

VIN	24	B+ SWITCH
		Q603, 604

	C1L	21
PUMP	C1H		MODE3
		23
CHARGE	VGH	22

CONTROL	MODE1	17	MODE1
	MODE2		MODE2
LOGIC		16

				ADDT	41	ANALOG REC	A
	123	EFMO				DIGITAL REC	(Page 25)
				DIN1	33		B
	113	FS4				DADT, XBCK,	(Page 25)
			DIGITAL SIGNAL PROCESSOR,			LRCK, FS256	C
	78	RFI		DADT	42
OVER WRITE			EFM/ACIRC ENCODER/DECODER,
	74	ASYO	SHOCK PROOF MEMORY CONTROLLER,	XBCK	45		(Page 25)
HEAD B+				LRCK
			ATRAC ENCODER/DECODER,		43
	75	ASYI	16M BIT D-RAM	FS256	46
			IC502 (1/2)

		81	FILI									OSCO	20
	FILTER	80	PCO									OSCI	19
		83	CLTV										X501
													22.5792MHz
		82	FILO	MNT2	MNT1	MNT3	DQSY SQSY XINT SENS	XLAT	TX DIN0	SRDT	SWDT	SCLK
				4	3	5	14 13 16 11	8	17 32	10	6	7
													RESET	D
	68													(Page 25)
79	XIC RST	OFTRK		2
	S MON	XSHOCK		51

	LD-A	AUTOMATIC		PD-O	TPP/WPP			WPPLPF
			20					3
		POWER CONTROL		APC
		Q1001
PD	LD				SERIAL
					INTERFACE
	MON		18	PD-NI
				PD-I	SBUS	SCK	XRST
	PD S0
	PD S1			19	23	24	25
					DATA	CLK

LOW-PASS FILTER SWITCH

Q501

57	REC WBL SW	FOK	52
		DQSY	54
		SQSY	53
		XINT	55	SWDT
	MODE1	SENSE	6
27				SCLK	SWDT, SCLK	E
		XLAT	8
28	MODE2
29	MODE3	TX	5			(Page 27)
		XCS DSP	9
				SRDT
		SI0	11
				SWDT	SRDT, SWDT,
		SO0	12
				SCLK	SCLK	F
102	SSB DATA	SCK0	13
103	SSB CLK					(Page 25)
36	PD S0			OVER WRITE HEAD
38	PD S1			UP/DOWM MOTOR DRIVE
				IC602

	2-AXIS
	DEVICE
(FOCUS)	(TRACKING)

M602 (SLED) M

M601

(SPINDLE)

U

W V

TRK+

TRK–

FCS+

FCS–

SLED VOLTAGE

MONITOR

IC604

FO3		FI3
30	TRACKING	21
RO3		RI3
	COIL DRIVE
32		22
FO1		FI1
7	FOCUS	16
RO1	COIL DRIVE	RI1
5		15
FO2		FI2
11		14
RO2		RI2
9	SLED	13
		PWM24
	MOTOR
		25
FO4	DRIVE	FI4
26		23
RO4		RI4
28		24

FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC601	PWMI
	3
UO	UI
46	2
CPUI
40

44	VO	SPINDLE	VI
	CPVI	MOTOR	1
39		DRIVE
	WO		WI
42
	CPWI		48
38

SPINDLE VOLTAGE	BIAS
MONITOR

CPWO CPVO CPUO OE

34 35 36 17

SPINDLE SERVO DRIVE

SWITCH

IC504, 505

IC504

2	1
	7

			5	6
				3
				IC505
SPDL PWM			2	1
	CLV U	CLV V	CLV W	7
				6
			5
				3

			12
106	APCREF		XRST
110	TFDR			PEAK	84
				BOTM	85
109	TRDR	DIGITAL SERVO		ABCD	86
				ADFG	99
111	FFDR		SIGNAL	FE	87
			PROCESSOR
				TE	96
112	FRDR IC502 (2/2)
133	SLDU			RECP	15
134	SLDV
141	SLVS			SLCU	138
135	SLDW			SLCV	139
140	SLCW

124	SPVS
127	SPDU	SPCU	130
128	SPDV	SPCV	131
129	SPDW	SPCW	132

	SYSTEM CONTROLLER		DC/DC	D603	VMC
	IC801 (1/3)	BATT B+	CONVERTER
					2
			IC605, Q607		VMAB
					13
								C2H	5
								C2L
			B+ SWITCH	VC			CHARGE		6
		VC B+			LVDET			C1H
			Q605	1			PUMP		12
								C1L
									11
35	SLD MON 1			IN2			OUTB
	HD CON 2	31			CONTROL	MOTOR		14
				8
7	WRPWR	30		IN1	LOGIC	DRIVE	OUTA	3	M
	HD CON 1			7
									M603
								OVER WRITE
								HEAD UP/DOWM

49 SPDL START SW

67 SPDL PWM

24 CLV U

25 CLV V

26 CLV W

• SIGNAL PATH

: PLAY (ANALOG OUT) : REC (ANALOG IN)

: REC (DIGITAL IN)

SLCU SLCV SPCW SPCV SPCU

05

OE

G

(Page 27)

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