Sony NWS-23 Service manual

NW-S21/S23

SERVICE MANUAL

Ver 1.0 2004.10

Photo: NW-S23

US and Foreign patents licensed from Dolby
Laboratories.

OpenMG and its logo are trademarks of Sony Corporation.
SonicStage and SonicStage logo are trademarks or registered
trademarks of Sony Corporation.
ATRAC, ATRAC3, ATRAC3plus and their logos are trademarks of
Sony Corporation.
Microsoft, Windows and Windo ws Media are trademarks or registered
trademarks of Microsoft Corporation in the United States and/or other
countries.
All other trademarks and registered trademarks are trademarks or
registered trademarks of their respective holders.
In this manual, TM and ® marks are not specified.

Maximum recording time (Approx.)

NW-S21

ATRAC3*
2 hr. 00 min. (132 kbps)

2 hr. 30 min. (105 kbps)
4 hr. 10 min. (66 kbps)

MP3
1 hr. 00 min. (256 kbps)

2 hr. 00 min. (128 kbps)

SPECIFICATIONS

ATRAC3plus*
1 hr. 00 min. (256 kbps)

4 hr. 10 min. (64 kbps)
5 hr. 50 min. (48 kbps)

US Model

Canadian Model

E Model

NW-S23

AEP Model

NW-S21

Frequency response

20 to 20,000 Hz (single signal measurement)

Output

Headphone: Stereo mini-jack

Signal-to-noise ratio (S/N)

80 dB or more (excluding ATRAC3 66 kbps)

Dynamic range

85 dB or more (excluding ATRAC3 66 kbps)

NW-S23

ATRAC3*
4 hr. 10 min. (132 kbps)

5 hr. 10 min. (105 kbps)
8 hr. 20 min. (66 kbps)

MP3
2 hr. 00 min. (256 kbps)

4 hr. 00 min. (128 kbps)

* The values for ATRAC3, ATRAC3plus apply if

the MP3 File Manager software has been erased
from the built-in flash memory.

Sampling frequency

ATRAC3, ATRAC3plus, MP3: 44.1 kHz

Audio compression technology

Adaptive Transform Acoustic Coding3 (ATRAC3)
Adaptive Transform Acoustic Coding3plus
(ATRAC3plus)
MPEG1 Audio Layer-3 (MP3): 8 to 320 kbps,
variable bit rate-compliant

ATRAC3plus*
2 hr. 00 min. (256 kbps)

8 hr. 30 min. (64 kbps)
11 hr. 40 min. (48 kbps)

PORTABLE IC AUDIO PLAYER

Operating temperature

5˚C to 35˚C (67˚F to 95˚F)

Power source

Size AAA (LR03) alkaline battery

Battery life (continuous
playback)

ATRAC3 format: Approximately 70 hours
(Playback at 105 kbps)
ATRAC3plus format: Approximately 60 hours
(Playback at 48 kbps)
MP3 format: Approximately 50 hours
(Playback at 128 kbps)

Dimension

78.5 × 48.2 × 20 mm (3 1/8 × 1 15/16 × 13/16 inches)
(w/h/d, projecting parts not included)

Mass

Approx. 40 g (2 oz) (battery not included)

– Continued on next page –

9-879-197-01

2004J05-1
© 2004.10

Sony Corporation

Personal Audio Company
Published by Sony Engineering Corporation

NW-S21/S23

Supplied accessories

Headphones (1)
Dedicated USB cable (1)
Arm band (1)
CD-ROM for the SonicStage software (1)
Operating Instructions (1)
SonicStage Operating Instructions (1)
CD-ROM for the Operating Instructions and
SonicStage Operating Instructions (1) (European
model only)

Pour les utilisateurs en France

En cas de remplacement des écouteurs,
référez-vous au modèle d’écouteurs adaptés à
votre appareil et indiqué ci-dessous.
MDR-J011LP

Design and specifications are subject to
change without notice.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C
during repairing.

• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering
or unsoldering.

TABLE OF CONTENTS

1. SERVICING NOTES ............................................... 3

2. GENERAL ................................................................... 4

3. DISASSEMBLY

3-1. Disassembly Flo w ........................................................... 5

3-2. Case (Rear) Sub Assy ...................................................... 5

3-3. Chassis (Battery Case Lid).............................................. 6

3-4. MAIN Board.................................................................... 6

3-5. DISPLAY Board.............................................................. 7

4. TEST MODE.............................................................. 8

5. DIAGRAMS

5-1. Block Diagram ................................................................ 9

5-2. Printed Wiring Board – MAIN Board – ......................... 11

5-3. Schematic Diagram – MAIN Board (1/2) – ................... 12

5-4. Schematic Diagram – MAIN Baord (2/2) – ................... 13

5-5. Printed Wiring Board – DISPLAY Board – ................... 14

5-6. Schematic Diagram – DISPLAY Board – ...................... 15

6. EXPLODED VIEW

6-1. Case (Front) Block .......................................................... 20

6-2. Battery Case Block .......................................................... 21

6-3. Board Block ..................................................................... 22

7. ELECTRICAL PARTS LIST................................ 23

2

SECTION 1

SERVICING NOTES

NW-S21/S23

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead­free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40 ˚C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 ˚C.
Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

• Replacement of CXR704060-201GA (IC400) and
SST32HF802-70-4C-L3KE (IC450) used in this set requires
a special tool.

Providing the required system environment

System requirements

The following system environme nt is required in order to us e the SonicStage Ver. 2.1 for
the Network Walkman.

Computer IBM PC/AT or Compatible

Operating
System

Display High Color (16bit) or higher, 800 ⋅ 600 dots or better (1024⋅ 768 dots

Others

This software is not supported by the following environments:

• OSs other than the indicated above

• Personally co nstr uc t ed P Cs or opera ting systems

• An environment that is an upgrade of the original manufacturer-installed operating system

• Multi-boot environment

• Multi-monitor environment

• Macintosh

Notes

• We do not ensure trouble-free opera tion on all computers that satisfy the system requirements.

• The NTFS format of Windows XP/Windows 2000 Professional can be used only with the standard

(factory) settings.

• We do not ensure trouble-free operation of th e sys te m suspend, sleep, or hibernation function on all

computers.

• For Windows 2000 Professional users, install Serv ic e Pack 3 or later version befo re using the

software.

•

CPU: Pentium II 400 MHz or higher (Pentium III 450 MHz or higher
is recommended.)

•

Hard disk drive space: 200 MB or more (1.5 GB or more is
recommended) (The am ount space will vary accord in g to Windows
version and the number of music files st ored on the hard disk.)

•

RAM: 64 MB or more (128 MB or more is recommended)

Others

•

CD drive (capable of digital playback by WDM)

•

Sound Board

•

USB port (supports USB (previously USB 1.1))

Factory in st alled:
Windows XP Media Center Edition 20 04 /Windows XP Media Cent er
Edition/Windows XP Professional/Windows XP Home Edition/
Windows 2000 Professional/Windows Millennium Edi ti o n/ Windows
98 Second Edition

or better is recommended)

•

Internet access: for Web registration, EMD services and CDDB

•

Wind ows M edia Player (version 7.0 or higher) installed for pl aying
WMA files

3

NW-S21/S23

Locating controls

For details about each part, refer to the pages in parentheses.

SECTION 2

GENERAL

This section is extracted from
instruction manual.

1

2

3

1 .–/+> button
2 Nx button
3 VOLUME –/+ button
4 Headphone jack
5 GROUP button
6 Display
7 SOUND/REPEAT button
8 MENU button

You can switch to the Time display by
pressing the MENU button for a while.

4

5

6

7

Rear sideFront side

8
9
q;

qa

9 HOLD (Locking controls) switch
0 Arm band attachment hole
qa Case cover button
qs USB jack
qd ACCESS lamp
qf Battery compartment
qg Case cover
qh Strap hole for attaching the strap

qs

qd
qf

qg

qh

Display

1

Text/graphic information display
Displays track number, track name,

current date and time,MESSAGE
and menu.Press the MENU button
to switch thedisplay mode.

2 Repeat mode indication

The current repeat mode is displayed.

3 AVLS indication

The indication appears while the AVLS
function is activated.

4 Digital sound preset indication

The current sound setting is displayed.

5 Remaining battery indication

The remaining battery power is
displayed.

Adjusting the
current time
setting
(DATE-TIME)

You can set and display the current time.
You can also adjust the time setting of your

Network Walkman to a computer’s built-in
clock by connecting your Network Walkman
to the computer

.–/+>

Nx button

MENU
button

1

Press the MENU button.

The menu screen is displayed.

REPEATMODE

2

Press the .–/+> button to
select “DATE-TIME” and press the
Nx button to confirm.

The “year” digit blinks.

button

>

3

Press the .–/+> button to
adjust the “year” setting and
press the Nx button to confirm.

The “month” digit blinks.

2004y 1m 1d

4

As you did in step 3, adjust the
settings for “month” and “date.”

After pressing the .–/+> button
to adjust the “date” setting and pressing
the Nx button to confirm, the display
switches to the time setting screen.

0:00

5

Press the .–/+> button to
adjust the “hour” setting and
press the Nx button to confirm.

The “minute” digit blinks.

0:00

6

As you did in step 5, adjust the
settings for “minute.”

After pressing the .–/+> button
to adjust the “minute” setting and
pressing the Nx button to confirm, the
display switches to the time setting
screen.

DATE-TIME

Adjusting the current time setting
(DATE-TIME)

To cancel the Menu mode

Select [RETURN] in the menu screen or press the
MENU button.

To display the current time

Press the MENU button and hold it.
You can display the current time while pressing the
button.

Notes

• If the unit is not used for a long time, your
settings of the date and time may be reset.

• If the current time is not set, the display for the
date and time will be “-- --.”

• If PC CLK is set to “ON”, the time If PC CLK is
set to “ON”, the timesetting of your Network
Walkman isautomatically adjusted to a computer’s
built-inclock when your Network Walkman is
connectedto the computer.

• Depending on the shipping area, the time display
format of the unit is set to a 12-hour display or a
24-hour display.
You cannot switch between a 12-hour display and
a 24-hour display in the unit.
A 24-hour display is shown in this manual.

2004y 1m 1d

7

Press the MENU button.

The display returns to the normal screen.

4

• This set can be disassembled in the order shown below.

y

3-1. DISASSEMBLY FLOW

SET

NW-S21/S23

SECTION 3

DISASSEMBLY

3-2. CASE (REAR) SUB ASSY

(Page 5)

3-4. MAIN BOARD

(Page 6)

3-5. DISPLAY BOARD

(Page 7)

Note: Follow the disassembly procedure in the numerical order given.

3-3. CHASSIS (BATTERY CASE LID)

3-2. CASE (REAR) SUB ASSY

(Page 6)

1

cover (play/stop) assy

adhesive sheet (cover P/S)

2

three screws (1.6 × 8)

3

five claws

4

case (rear) sub ass

5

NW-S21/S23

)

d

3-3. CHASSIS (BATTERY CASE LID)

2

Open the case cover assy.

6

case cover assy

4

two claws

5

chassis (battery case lid

3-4. MAIN BOARD

1

Push the button (open).

1

connector (CN401)

3

two screws (B1.4)

2

main boar

6

3-5. DISPLAY BOARD

d

1

display boar

NW-S21/S23

7

NW-S21/S23

SECTION 4

TEST MODE

KEY CHECK MODE

Procedure:

1. Put a dry battery into the set and keep a battery lid open.

2. Turn on the [HOLD] switch, then while pressing
the Nx button and the [GROUP] button, close a battery lid
and power supply is turned on.

3. “256M 4.05.08 G07” is displayed on the liquid crystal display.

4. Turn off the [HOLD] switch.

5. Press the Nx button.

6. “Check all keys” is displayed on the liquid crystal display and
key check mode is activated. Then, when each button is
pressed, it is displayed on liquid crystal display as follows.

• [MENU] button:

“EL0: ON” or “EL0: OFF” (Liquid crystal display back light
(EL0 (blue)) turns on/off)

• [GROUP] button:

“EL1: ON” or “EL1: OFF” (Liquid crystal display back light
(EL1 (green)) turns on/off)

• + > button:

“Parts: ON” (ACCESS LED turns on)

• . – button:

“Parts: OFF” (ACCESS LED turns off)

• VOLUME + button:

“Beep: ON” (BEEP turns on)

• VOLUME – button:

“Beep: OFF” (BEEP turns off)

• [REPEAT SOUND] button:

“Initialized” (Time, volume setting etc. turn to the factory
preset state. But the music data, files etc. in the memory are
not changed)

Note: The following check is performed at the end.

• + > button: (Only the state where the liquid crystal display

back light (EL1 (green)) turns on)
All liquid crystal display light up.

• . –button:(Only the state where the liquid crystal display

back light (EL1 (green)) turns on)
All liquid crystal display go off.

7. All keys inputs are completed, then press the Nx button to
restart as usual.

8

5-1. BLOCK DIAGRAM

NW-S21/S23

SECTION 5

DIAGRAMS

DATA+

DATA–

CN400 (1/2)

3

2

NOR FLASH MEMORY,

S-RAM

IC450

NAND FLASH MEMORY

IC460

29 – 36,

DQ0 – DQ15

1 – 8,

A0 – A18

27
13
28
11
14
15

29 – 32,

I/O1 – I/O8

9
17
16

8
18

R/B

7

38 – 45

16 – 24

41 – 44

129 UDP

128 UDM

38 – 53

D0 – D15

2 – 9

197 – 207,

186 XCS0BEF
187 XCS1BES
182 X R EOE
185 X W EWE
184 X U BUBS
183 X L BLBS

15 – 22

FAD0 – FAD7

29 XFCE0CE
24 FALEALE
23 FCLECLE
27 XFRERE
26 XFWEWE
28 XFWPWP 19
30 FRB0

A1 – A19

AOUTL 134

PF3 84

BEEP

SO0 58
XSCK0
XSCS0

PR0

PI5

PI2

PR4

PI1 172

HEADPHONE AMP

IC301

3 IN1

8 IN2AOUTR 133 OUT2 9

85

57

60
156
176

EL DRIVER

IC801

173
160

LED DRIVE

Q702

11 ENA1
10 ENA2

CHV

20

D801

D702

ACCESS

1

OUT1

STB

7

OUT1
OUT2

OUTCM 16

VDDLDR

13

2

SDA
SCL

LIQUID

XCS1

CRYSTAL
DISPLAY

A0

XRES

18
15

+2.8V

UNIT

EL

BACK LIGHT

UNIT

J301

i

SIGNAL PATH

: PLAYBACK

: USB input from PC

: USB output to PC

S701

. –

S709

+ >

+

X700

32.768kHz

S702S703

–VOLUME

S705

MENU

S704

SOUND

REPEAT

REAL TIME CLOCK

9 OSCIN

8 OSCOUT

S708

GROUP

S707

Nx

S706

HOLD

IC700

HOLD

OFF

CE

104 I N T 8

102 A N 4

+2.3V

+2.3V

7

SYSTEM CONTROLLER,

D/A CONVERTER

105 I N T 9

103 A N 5

81 INT3

83 INT4

87 INT5

75 SI1SO 3
74 SO1SI 4
73 XSCK1SCLK 2
76 XSCS1

XTAL

137

138

IC400

EXTAL

XRST 106

141TX142

PI3 174

PC2 59

TEX

RESET SWITCH

Q502, 504

+2.8V

NAND FLASH MEMORY

B+

+2.3V +3.3V

VOLTAGE

DETECT

IC505

+2.8V

VOLTAGE

DETECT

IC502

+1.2V

VOLTAGE

DETECT

IC510

D703

C700

PAS SECONDARY

BATTERY

(BACK-UP)

SWITCHING

Q506, 507

+1.2V

REGULATOR

IC504

+2.8V

REGULATOR

IC461

+2.3V

REGULATOR

IC509

+2.8V

REGULATOR

IC508

SWITCHING

IC501

SWITCHING

Q501

D503

D504

D502

D501

DC/DC
CONVERTER
IC507, Q505

DC/DC
CONVERTER
IC503, Q500

SWITCHING

Q503

+3.3V

REGULATOR

IC506

BATTERY

DETECT

IC500

CN400 (2/2)

1

VBUS

DRY BATTERY

SIZE "AAA"

(IEC DESIGNATION LR03)

1PC. 1.5V

NW-S21/S23

X400

22.5792MHz

X401

16MHz

99