Sony MZ-S1 service manual Page

6-8. SCHEMATIC DIAGRAM – MAIN Board (2/4) – • See page 42 for Waveform. • See page 43 for IC Block Diagrams.

(2/4)

MZ-S1

D1

A1

A2

A3

A4

A5

SCW SCV

3C 2C 1C -KR T +KR T

C522

0.1

VCPVLP

D904	R906
MA111-TX	0
R914
100
	5%	5%.

D2

D3

D4

D5

D6

M602

(SLED)

U

A6

(Page 38)

A7

A8

A9

A10

A11

A12

N

CN502

10P

1

SLEDN

	SCU
	SP
	SMU
	SMV
	SMW
	XMD
	C561
	0.1
1.0	CMW
	CMV
C551	CMU

CP

CCU

R560	2.2k
R561	2.2k
R562	2.2k
	C557	C558
	0.047	0.047

UI2	I2V	I2W	2W DGN	2OW
			P
PWM2
CPUO2
CPVO2
CPWO2
OE
GND1
VC
VG
CPWO1
CPVO1
CPUO1
PWM1
UI1			1
			WDN PG
	I1V	I1W		O1W

4C

VCC WCC

D1

D2

D3

C559

0.047 D4

0	0
L552	L551

2VW VM	2OV	2UV DPGN	2O U	2UM V	R2VM	2O R	2DN PG	2FO	F2MW
									FI2
									RI2
									COM2
									CPUI2
									CPVI2
									CPWI2
									NC
FOCUS/TRACKING COIL DRIVE,									GND2
SPINDLE/SLED MOTOR DRIVE
									CPWI1
		IC551
	SC111258FCR2								CPVI1
									CPUI1
									COM1
		1V							RI1
									FI1
1W VVM		UND PG					1DGN P
	1OV		1O U	1UM V	1RVM	1O R		1FO	F1M V

5C	6C	L554	L553
		0	0
			C512	C521
			0.1	0.1
		FCS-	FCS+

C927	C916
0.1	1

DGN	CN	VOLTAGE
UT	DD
		DETECTOR

TF1

TR1

D4

D3

D2

D1

D5

D6

D7

D8

FR1

FF1

XRST

		CSEL
		FF
		SL
	Q904	C924
R927	2SA1745-6.7TL	1000p
1M
	Q903,904
	B+ SWITCH
	R928
	100k
R925	Q903

.0

0

22k

7k.4

R946

R948

R936

R917

C901

100k

10

10k

0.5%

6.3V

0.5%

C919

C902

10

10

6.3V

6.3V

R947

R915

1k

2.2k

0.5%

0.5%

C920

10

6.3V

R909

10k

D901

L901

100∝

H

MA2YD1500LS0

AP912

∝H

R941

22k

(VCO)

10

L906

C926

10

6.3V

C911

IFV

AV

AFBV

IFFBV

VC

VC

R902

10

FBVD

NDG

VCO

TVCOU

L1

CN

ND1PG

GND1P

470k

6.3V

R903

C905

NC

L1

2.2k

0.1

R911

VD

RF1

470

VC2

INM1

XRST

DTC1

C908

0.1

C917

0.1

CRST

DTC2

C921

0.1

C915

RSTREF

RF2

0.1

C906

0.01

R905

VREF

INM2

2.2k

VB

POWER CONTROL

VDRF

GND

IC901

VGFB

C928

CLKSEL

XPC18A32FCR2

VG

0.1

VAIFON

LG

FFCLR

PGND2

SLEEP

L2

C907

D903 TX- MA729

2.2

CLK

D2PGN

D2PGN

NC

NLO V

1KXW

K2XW

3KW X

K4W X

STBV

CM RV

NDG

VL

LOV

VL

L2

R922

22k

C914

R907

1M

0.1

R910

10k

C922

1000p

L905 100∝ H

D7

(Page 40)

W

M603

OVER WRITE HEAD UP/DOWN

U

W

M601

(SPINDLE)

V	C1
SLEDU	C2
SLEDV
	C3
SLEDW
HD DRV-
HD DRV+	R551 10k
CLVW	C4
	R552 10k
CLVV	C5
	R553 10k
CLVU	C6
N
CLVN
10	022.	01.0	022.
	0	C565	0
V	C562		C563

D5

D6

D7

D8

01.0	022.	01.0
C566	0	C567
	C564

O	V	IC902
		XC61CN0802NR

R919

47k

0.5%

R918

10k

0.5%

220k	2SD2216J-R
	(TX).SO
R924
220k
	Q902
R923	2SD2216J-R
220k	(TX).SO
	Q901
	2SD2216J-R
	(TX).SO

Q901,902

SWITCHING

R921	470k
R916	220k					L904
						10∝ H		L902
							D902
R908	100k					R920		22∝ H
							MA2YD1500LS0
						10k
			TED W
		NOL V		KCE R	FLA H	0.5%
						C904
						22
						6.3V
							C903
C910		C909			C912	C913	100
1000p		1000p					6.3V
					1000p	4700p
	ZZ3	ZZ2		ZZ1
							AP913
							(VLO)

C918

2.2

D8

D9

D10

D11

39 39