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21

• Follow the (Step 1) - (Step 4) of item 8.1.

• Follow the (Step 1) - (Step 4) of item 8.1.

• Follow the (Step 1) - (Step 4) of item 8.1.
• Follow the (Step 1) - (Step 3) of item 8.2.
• Follow the (Step 1), (Step 2) of item 8.3.

S-1

S1. About Indication of The Schematic Diagram ............................ S-1
S1.1. Important Safety Notice......................................................... S-1

S2. Voltage Chart ........................................................................... S-2
S2.1. Main P.C.B. ........................................................................... S-2
S2.2. Sub P.C.B. ............................................................................. S-2

S3. Block Diagram .......................................................................... S-3
S3.1. Overall Block Diagram .......................................................... S-3

S4. Schematic Diagram .................................................................. S-4
S4.1. Interconnection Diagram ....................................................... S-4
S4.2. Main Schematic Diagram ...................................................... S-6
S4.3. Sub Schematic Diagram ..................................................... S-10

S5. Print Circuit Board .................................................................. S-11
S5.1. Main P.C.B. ......................................................................... S-11
S5.1.1. Main P.C.B. (Component Side) ........................................ S-11
S5.1.2. Main P.C.B. (Foil Side) ..................................................... S-12
S5.2. Sub P.C.B. ........................................................................... S-13
S5.2.1. Sub P.C.B. (Component Side) .......................................... S-13

S5.2.2. Sub P.C.B. (Foil Side) ...................................................... S-14

S6. Replacement Parts List .......................................................... S-15

S7. Exploded View ....................................................................... S-20
S7.1. Frame and Casing Section.................................................. S-20
S7.2. Packing Parts and Accessories Section .............................. S-21

Table of contents

SD Audio Player

AD0511067CE

Colour
(S) ...........Silver Type (SD350GH/GK/SD300GC/SG only)
(W)...........White Type (Except SD300GC/SG)
(A) ...........Blue Type (SD350GC/GH/GK/SG only)

SV-SD350VGC
SV-SD350VGH
SV-SD350VGK
SV-SD350VGT
SV-SD350VSG

SV-SD300EB
SV-SD300EG
SV-SD300GC
SV-SD300GN
SV-SD300SG

1.Although reference number of the parts is indicated on the P.C.B. drawing and/or

schematic diagrams, it is NOT mounted on the P.C.B. when it is displayed with "$" mark.

2.It is only the "Test Round" and no terminal (Pin) is available on the P.C.B.

when the TP (Test Point) indicated as "    " mark.

3.The voltage being indicated on the schematic diagram is measured in

"Standard-Playback" mode when there is no specify mode is mentioned.

4.Although the voltage and waveform available on here is measured with standard frame,

it may be differ from actual measurement due to modification of circuit and so on.

5.The voltage being indicated here may be include observational-error (deviation) due to

internal-resistance and/or reactance of equipment. Therefore, handle the value 
indicated on here as reference.

6.Use the parts number indicated on the Replacement Parts List .

COMPONENTS IDENTIFIED WITH THE MARK       HAVE THE SPECIAL CHARACTERISTICS
FOR SAFETY. WHEN REPLACING ANY OF THESE COMPONENTS USE ONLY THE SAME TYPE.

7.Indication on Schematic diagrams:

OFTR

FEP

Circuit name being connected.

Name of Signal

This signal is connected
to the FEP schematic diagram

S-2

Note) Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with the chassis taken as standard. 

          Therefore, there may exist some errors in the voltage values, depending on the internal impedance of the DC circuit tester. 

REF No.

PIN No.

STOP

IC6

1

0

IC6

2

2.2

IC6

3

0

IC6

4

0

IC6

5

0

IC7

1

2.1

IC7

2

2.2

IC7

3

0

IC7

4

0

IC204

1

1.2

IC204

2

0

IC204

3

1.1

IC204

4

0

IC204

5

1

IC205

1

1.3

IC205

2

1.1

IC205

3

1.2

IC205

4

0

IC205

5

1.2

IC205

6

1.2

IC205

7

1.3

IC205

8

1.3

Q2

S

2.2

Q2

D

0

Q2

G

1.5

Q4

S

1.3

Q4

D

0

Q4

G

0

Q5

S

2

Q5

D

0

Q5

G

1.6

Q6

S

0

Q6

D

2.2

Q6

G

0

Q7

S

0

Q7

D

1.6

Q7

G

0

Q202

1

0

Q202

2

0

Q202

3

0

Q202

4

1.3

Q202

5

0.9

Q202

6

1.2

Q203

E

0

Q203

C

1.6

Q203

B

0

Q204

S

1.3

Q204

D

1.3

Q204

G

0.9

Q205

S

0

Q205

D

0.5

Q205

G

0

QR5

E

0

QR5

C

0

QR5

B

0

QR202

E

0

REF No.

PIN No.

STOP

QR202

C

1.1

QR202

B

0

QR203

E

0

QR203

C

1.5

QR203

B

0

QR204

E

1

QR204

C

0

QR204

B

1.2

REF No.

PIN No.

STOP

IC305

1

0

IC305

2

0

IC305

3

0

IC305

4

0

IC305

5

0.1

S-3

SDDAT0~3

D0~15

10,11,24,

40,47,54,

55,59~61,

63,102,105,

152,161,162

V

SS

CORE

16,71,

72,76,

77,86,

110

DACOL

SD CARD

V

SS

MND0~15

135
156

+B3

V

DD

IO

120,122,

14,15

MN677381HAZ

IC8

DECODER

(L-LGA TYPE)

C0JBAZ002327

IC6

SDCMD

SDCLK

SDCD

SDWP

36

125

100

106

MN102H930FLD

IC3

MICRO COMPUTER

A0~19

DQ0~15

OE

WE

LB

V

SS

V

CC

F

+B3

RS10026

IC4

FLASH/SRAM

41~56

1~20

MNA0~20

69~80,

82~89,

91

29,30

V

CC

S

31

32

24

25

UB

26

27

22

21

CETS

CEF

DACOR

HEADPHONES

USB

TERMINAL

C1AB00002453

IC301

FM TUNER

MODULE

11

L OUT

R OUT

12

11

LIN1

RIN1

14

LOUT

RO

U

T

23

18

M1

(MIC)

18

PREL

27

MPWR

7

SDTO

96

ADIN

BUFFER

AMP

17

PDN

46

XO

6

PDN

31

EXT.CLK

X3

(12MHz)

1

UXI

UXO

35

X2

(16.9344MHz)

153

AXI

AXO

134

136

USB DM

137

USB DP

C1ZBZ0002666

IC202

+B6

POWER

SUPPLY

Q2

POWER

SUPPLY

Q4

DC-DC

CONV.

Q7

+B4

RESET

C0EBD0000074

IC7

+B5

41

SYSRST

2

PWM/VFM

ON

OFF

S210

(HOLD)

39

FET

S

W

CONT

93

92

BATT

DC-DC

CONV.

C1ZBZ0002666

IC203

EL

CONT

36

DA

TA

CLK

NR

W

29

30

28

MDT

MCK

MLEN

3

2

1

BUEN

DA

CL

31

29

30

96

95

MNCS1

MNCS0

3

NHDK

NHRE

NHWEL

NHWEH

4

5

6

NEXTDK

NRD

NWT

NRAMLLB

+B3

38,

158

SDD

V

DD

+B3

97,

142

PLL

V

DD

+B2

7,21,31,

62,151,

154,159

V

DD

CORE

V

SS

IO

48,74,

66,79,

80,85,

107,109

SDD

V

SS

82,

111

V

DD

+B3

7,42,

47,68,

90

AV

DD

+B3

16

AV

SS

25

44,59,

81

4

5

24

13

19

22

C0CBCAC00319

IC305

+B1

+B1

23

V

CC

GND

1,6

L3

4

FM-ANT

C0FBAJ000010

IC9

A/D CONVERTER

SWITCH-

ING

QR5

+B3

100

USB CON

2,27,44,

49,50,69,

108,143,

150

+B3

146

USB

V

DD

PLL

V

SS

140

USBV

SS

139

LCD PANEL

(D0~7)

(/WR)

(A0)

(VLed)

A1~15

NRST

130

4,9,12,19,

23,26,41,

42,43,53,

56,103,

104,116,

147

NCS

20

98

NHCS

18

67

5

6

60~67,

51~58

99

NWR

CHARGE

CONT.

DC-DC

CONV.

REGULATOR

DV

DD

6

+B3

MV

SS

DV

SS

AV

SS

23

3

MV

DD

+B1

AV

DD

28

LIN

RIN

1

30

AV

SS

1

AV

SS

3

AV

SS

2

DV

SS

+B3

21,31,

10,20

AV

DD

1~3

DV

DD

2

+B3

32

DV

DD

1

MLEN

19

XI

X1

(32kHz)

45

24

AK

IN

C0DBAFE00015

IC204

D206

C0ABHA000051

IC205

POWER

SUPPLY

Q202~204

C0DBAZZ00074

IC201

DC-DC

CONV.

+B2

POWER

SUPPLY

CONT.

POWER

SUPPLY

CONT.

Q205,

QR203

94

USB VBUS

C1BB00000909

IC303

HEADPHONE AMP

+B1

27

V

DD

+B1

40

VIO

FM-ANT(GND)

5

MUTE-

ING

Q302

HPMUTE

11

POWER

SUPPLY

Q6

+B5

POWER

SUPPLY

QR204

+B3

+B6

POWER

SUPPLY

CONT.

QR202

D205

32

DRY BATT DD CE

8

CHG. CONT

KEY SW

35

PLA

Y

KEY

IN

KEY

IN

SWITCH-

ING

+B4

Q5

BATTERY

MOUNT:

SV-SD350V

MOUNT:

SV-SD350V

NOTE

: AUDIO(ANALOG) SIGNAL LINE
: AUDIO(DIGITAL) SIGNAL LINE
: FM SIGNAL LINE
: MIC SIGNAL LINE

SV-SD350V/SV-SD300  OVERALL BLOCK DIAGRAM