Sony MZ-N505 service manual

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

MZ-N505

A1

A2

A3

A4

A5

(2/4)

SCW

SCV

3C	2C	1C	-KR T	+KR T
				C522
			0	0.1
				0
			L552	L551

D904

MA111-TX

R914

100

	5%.0	5%.	5%.0
R906	100k	0
			7k.4
0		22k
R946	R948	R936	R917
10k
0.5%
			C901	C902

	D1
	D2
VCP	VLP

D3

D4

D5

D6

D7

M602

(SLED)

U

W

M603

OVER WRITE

HEAD UP/DOWN

U

W

M601

(SPINDLE)

A6

(Page 38)

A7

A8

A9

A10

A11

A12

N

CN502

10P

1

SLEDN

V

SLEDU

SLEDV

SLEDW

HD DRV-

HD DRV+

CLVW

CLVV

CLVU

N

CLVN

10

V

C551

0.1

C1

C2

C3

C4

C5

C6

SCU

SP

SMU

SMV

SMW

XMD

C561

0.1

CMW

CMV

CMU

CP

CCU

R560 2.2k

R561 2.2k

R562 2.2k

R551 10k

R552 10k

R553 10k

UI2

I2W

2WDNPG

2OW

2VWMV

2VO

2VUDNGP

2OU

2UVM

R2VM

2OR

D2NPG

2FO

FI2

VI2

F2MW

PWM2

RI2

CPUO2

COM2

CPVO2

CPUI2

CPWO2

CPVI2

OE

CPWI2

GND1

NC

VC

FOCUS/TRACKING COIL DRIVE,

GND2

SPINDLE/SLED MOTOR DRIVE

VG

CPWI1

IC551

CPWO1

SC111258FCR2

CPVI1

CPVO1

CPUI1

CPUO1

COM1

PWM1

V1UD NGP

RI1

UI1

1W DPGN

1VW MV

D1NG P

FI1

VI1

I1W

1OW

1VO

1OU

1UM V

1RM V

1OR

1FO

F1VM

	4	5	6	L554	L553
	C	C	C
				0	0	C512	C521
						0.1	0.1
V	W			FCS-	FCS+
CC	CC

						D1
						D2	DNG	NC
						D3
						D4	TUO	DDV	VOLTAGE
	C557		C558		C559				DETECTOR
	0.047		0.047		0.047				IC902
									XC61CN0802NR
									C927
									0.1
						D5
						D6
						D7
						D8	R919
							47k
022.	01.0	022.	01.0	022.	01.0		0.5%
						R918			C916
C5620	C565	C5630	C566	C5640	C567
						10k			1
						0.5%

TF1

TR1

D4

D3

D2

D1

D5

D6

D7

D8

FR1

FF1

Q904

2SA1745

R927

1M

Q903,904

B+ SWITCH

R928

100k

R925

220k

Q903

2SD2216J-R

R924

220k

Q902

R9232SD2216J-R

220k

Q901

2SD2216J-R

Q901,902

SWITCHING

C919

10

10

10

6.3V

R915

6.3V

6.3V

2.2k

C920

R947

0.5%

1k

10

6.3V

0.5%

D901

MA2YD15

AP912

∝H

(VCO)

10

L906

C911

VIF

VA

FBVA

FBDV

VIFFB

DNG

VC

COV

VC

TUCO V

L1

NC

1GND P

1GND P

10

6.3V

NC

L1

R911

VD

RF1

470

VC2

INM1

XRST

XRST

DTC1

C917

CRST

DTC2

0.1

RSTREF

RF2

C915

VREF

INM2

0.1

POWER CONTROL

VB

VDRF

IC901

GND

VGFB

XPC18A32FCR2

C928

CLKSEL

VG

CSEL

0.1

VAIFON

LG

FF

FFCLR

PGND2

SL

SLEEP

L2

CLK

2ND PG

NC

NOVL

K1XW

K2XW

K3W X

K4XW

STBV

CVRM

DGN

LV

LOV

LV

L2

GND2P

C924

1000p

C914

R907

1M

0.1

R921

470k

L904

R916

220k

10∝

H

R908

100k

R920

D902

MA2YD15

10k

NOL V

TED W

KCE R

FLA H

0.5%

C904

22

6.3V

C910

C909

C903

C912

C913

100

1000p

1000p

6.3V

1000p

4700p

ZZ3

ZZ2

ZZ1

AP913

(VLO)

	R909		R910
	10k		10k
L901
100∝	H
R941
22k
C926
10
6.3V
R902
470k
R903	C905
2.2k	0.1
C908		0.1
C921		0.1

C906 0.01 R905 C922

2.2k 1000p

C907 D903 MA729

2.2

L905

100∝ H

R922

22k

L902

22∝ H

C918

2.2

(Page 40)

D8

D9

D10

D11

39 39