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2008E05-1

© 

2008.05

Photo: NWD-E025F

•  “WALKMAN” and “WALKMAN” logo are registered trademarks of Sony Corporation.
•  Microsoft, Windows, Windows Vista and Windows Media are trademarks or registered 

trademarks of Microsoft Corporation in the United States and/or other countries.

•  Adobe and Adobe Reader are trademarks or registered trademarks of Adobe Systems 

Incorporated in the United States and/or other countries.

•  MPEG Layer-3 audio coding technology and patents licensed from Fraunhofer IIS and 

Thomson.

•  IBM and PC/AT are registered trademarks of International Business Machines Corporation.
•  Macintosh is a trademark of Apple Inc.
•  Pentium is a trademark or a registered trademark of Intel Corporation.
•  “Style-Up” is a trademark or a registered trademark of Sony Ericsson Mobile Communications 

AB.

•  US and foreign patents licensed from Dolby Laboratories.
•  All other trademarks and registered trademarks are trademarks or registered trademarks of their 

respective holders. In this manual, 

TM

 and 

®

 marks are not specifi ed.

This product is protected by certain intellectual property rights of Microsoft Corporation. Use or 
distribution of such technology outside of this product is prohibited without a license from Microsoft 
or an authorized Microsoft subsidiary.

Program ©2008 Sony Corporation
Documentation ©2008 Sony Corporation

Music
File format

MP3(MPEG-1 Layer3) fi le format, ASF fi le format, MP4 fi le 
format, Wave-Riff fi le format

File extension MP3

*1

 (.mp3), WMA

*1, *2

 (.wma), AAC-LC

*1, *2

 (.mp4

*3

, .m4a, 

.3gp), Linear-PCM

*1

 (.wav)

Codec

MP3

*1

Bit rate: 32 to 320 kbps (Supports variable bit rate 
(VBR))
Sampling frequency: 32, 44.1, 48 kHz

WMA

*1, *2

Bit rate: 32 to 192 kbps (Supports variable bit rate 
(VBR))
Sampling frequency: 44.1 kHz

AAC-LC

*1, *2

Bit rate: 16 to 320 kbps (Supports variable bit rate 
(VBR))

*4

Sampling frequency: 11.025, 12, 16, 22.05, 24, 
32, 44.1, 48 kHz

Linear-PCM

*1

Bit rate: 1,411 kbps
Sampling frequency: 44.1 kHz

*1

  File may not correspond to all encoders.

*2

 Copyright protected fi les cannot be played back.

*3

 MP4 fi les with video are not playable.

*4

  Non-standard bit rates or non-guaranteed bit rates are included 

depending on the sampling frequency.

Maximum recordable number of songs and time (Approx.)
The approximate times are based on a transferred 4-minute MP3 or 
Linear-PCM format song.
Other playable audio fi le format song numbers and times may differ from 
MP3 or Linear-PCM format.

Bit rate

Songs

Time

Songs

Time

48 kbps

685

45 hr. 40 min.

1,350

90 hr. 00 min.

64 kbps

510

34 hr. 00 min.

1,000

66 hr. 40 min.

128 kbps

255

17 hr. 00 min.

515

34 hr. 20 min.

256 kbps

125

8 hr. 20 min.

255

17 hr. 00 min.

320 kbps

100

6 hr. 40 min.

205

13 hr. 40 min.

1,411 kbps 
(Linear-PCM)

23

1 hr. 30 min.

47

3 hr. 00 min.

Maximum recodable number of fi les and folders
Maximum number of fi les: 2,048 fi les
Maximum number of folders: 1,024 folders
Total maximum number of fi les and folders directly under one folder: 
Approx. 300

*1

NWD-E023F: 1 GB (Approx. 968 MB = 1,015,726,080 bytes)
NWD-E025F: 2 GB (Approx. 1.89 GB = 2,035,974,144 bytes)

*1

  Available storage capacity of the player may vary.

  A portion of the memory is used for data management functions.

Output (headphones)
• Output
  5 mW + 5 mW (16 Ω)
• Frequency 

response

  20 to 20,000 Hz (when playing data fi le, single signal measurement)

– Continued on next page –

FM radio
• Preset
 30 

presets

•  FM Frequency range
  87.5 to 108.0 MHz

IF (FM)
375 kHz

Antenna
Headphone cord antenna

Interface
Headphone: Stereo mini
Hi-Speed USB (USB 2.0 compliant)

Operating temperature
5 °C to 35 °C (41 °F to 95 °F)

Power source
•  Built-in rechargeable lithium-ion battery
•  USB power (from a computer through a USB connector of the player)

Charging time
USB-based charging
Approx. 60 minutes

Battery life (continuous playback)
By setting as follows, a longer battery life can be expected.
The times below are approximated when “Power Save Mode” is set to
“Save ON Super,” and “Sound”, “Clear Stereo”  and “Dynamic  
Normalizer” are deactivated.

The time below may differ depending on ambient temperature or the 
status of use.

Status of the player
Playback at MP3 128 kbps

Approximately 28 hours

Playback at WMA 128 kbps

Approximately 24 hours

Playback at AAC-LC 128 kbps

Approximately 28 hours

Playback at Linear-PCM 1,411 kbps

Approximately 25 hours

At receiving FM broadcasting

Approximately 10 hours

Display
3-line Color LCD

Dimension (w/h/d, projecting parts not included)
81.9 × 22.1 × 13.8 mm (3 

1

/

4

 × 

7

/

8

 × 

9

/

16

 inches)

Dimension (w/h/d)
83.7 × 22.3 × 16.2 mm (3 

3

/

8

 × 

29

/

32

 × 

21

/

32

 inches)

Mass
Approx. 28 g (Approx. 0.99 oz)

Supplied Accessories
Headphones (1)
Style-Up

®

 Panel (1)

USB cap for Style-Up

®

 Panel (1)

Quick Start Guide (1)
Operation Guide (PDF fi le)

*1

 (1)

“Auto Transfer” software

*2

 (1)

*1

  Operation Guide (PDF fi le) is stored in the built-in fl ash memory of the 

player.

*2

  The “Auto Transfer” software is stored in the built-in fl ash memory 

of the player. For details about this software, see “Transferring music 
automatically using the “Auto Transfer” software”.

Design and specifi cations are subject to change without notice.

  .............................................   3

  ..................................................................   5

3-1.   Disassembly Flow ...........................................................   6
3-2.   USB Cover Assy, Style Up (R) Panel Assy ....................   6
3-3.   Cabinet Upper Assy ........................................................   7
3-4.   Cabinet Lower Assy ........................................................   7
3-5.   LCD Unit (LCD401) .......................................................   8
3-6.   Sheet Key (KEY501) ......................................................   8
3-7.   Battery Assy (BT901), MAIN Board ..............................   9

TEST  MODE 

 ............................................................   10

5-1.  Printed Wiring Board  .....................................................   13
5-2.  Schematic Diagram - MAIN Board (1/3) - .....................   14
5-3.  Schematic Diagram - MAIN Board (2/3) - .....................   15
5-4.  Schematic Diagram - MAIN Board (3/3) - .....................   16

6-1.  USB Cover , Style Up (R) Panel Section ........................   25
6-2. Cabinet 

Section 

...............................................................  26

6-3.  MAIN Board Section ......................................................   27

  ..............................   28

Accessories are given in the last of the electrical parts list.

CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.

NOTES  ON  CHIP  COMPONENT  REPLACEMENT
•  Never reuse a disconnected chip component.
•  Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

FLEXIBLE  CIRCUIT  BOARD  REPAIRING
•  Keep the temperature of 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.

UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free 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)

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 viscous (sticky, less prone to fl ow) 
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.

NOTE  THE  IC101,  IC201,  IC1301  and  J101  ON  THE  
MAIN  BOARD  REPLACING
IC101, IC201, IC1301 and J101 on the MAIN board cannot ex-
change with single. When IC101, IC201, IC1301 and J101 on the 
MAIN board are damaged, exchange the entire mounted board.

 Computer 

IBM PC/AT or compatible computer preinstalled with the following Windows operating 
systems:

– Windows XP Home Edition (Service Pack 2 or later)
– Windows XP Professional (Service Pack 2 or later)
– Windows XP Media Center Edition 2004 (Service Pack 2 or later)
– Windows XP Media Center Edition 2005 (Service Pack 2 or later)
– Windows Vista Home Basic
– Windows Vista Home Premium
– Windows Vista Business
– Windows Vista Ultimate 

Not supported by 64 bit version OS.
Not supported by OSs other than above.

 CPU: Pentium III 450 MHz or higher (For Windows Vista, Pentium III 800 MHz or 

higher)

 RAM: 128 MB or more (For Windows Vista, 512 MB or more)

 Hard Disk drive: 200 MB or more of available space (1.5 GB or more is recommended)

More space may be required, depending on the version of the operating system. 
Additional space is required for storing music data.

 Display: 

– Screen Resolution: 800 × 600 pixels (or higher) (recommended 1,024 × 768 or 

higher)

– Colors: High Color (16 bit) (or higher)

 CD-ROM drive (supporting Digital Music CD playback)

 Sound board

 USB port (Hi-Speed USB is recommended)

 Internet Explorer 6.0 or later needs to be installed.

We do not guarantee operation for all computers even if they meet the above System 
Requirements.

Not supported by the following environments:
– Personally constructed computers or operating systems
– An environment that is an upgrade of the original manufacturer-installed operating 

system

– Multi-boot environment
– Multi-monitor environment
– Macintosh

NOTE  OF  MAIN  BOARD  REPLACING
When the MAIN board is replaced, format it according to the fol-
lowing.

You can format the built-in flash memory of the player.
If the built-in flash memory is formatted, all audio data, the “Auto Transfer” 
software and Operation Guide (this manual) will be erased. Be sure to verify 
the data stored in the memory prior to formatting, and export any necessary 
data to the hard disk of your computer or other device.

/ button

 button

/HOME button

 This function is only available in pause mode.

 When the remaining battery is low, you cannot format the player. Charge the battery 

before formatting.

 This function is not available while/after using FM radio. If you want to use this function 

after FM radio, operate from the HOME menu to select 

 (All Songs) or 

 (Sports 

Shuffle) to confirm.

 If you format the built-in flash memory of the player, data in the “MUSIC” folder is 

erased, but the “MUSIC” folder is left on the player.





/ button to select 

 button to confirm.



/ button to select “Advanced Settings>,” and then 

 button to confirm.



/ button to select “Initialize>,” and then press the 

 button to confirm.



/ button to select “Format>,” and then press the 

 button to confirm.



/ button to select “OK,” and then press the 

button to confirm.
“FORMATTING...” appears and formatting starts.
When formatting is completed, “COMPLETE” appears.

Select “Cancel” in step 



, and press the 

 button to confirm.

Press the  /HOME button.

 Do not format the built-in flash memory of the player in Windows Explorer. When you 

formatted the player in Windows Explorer accidently, do it again on the player

.

NWD-E023F Urban Black

Shiny Silver

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–

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–

Pure White

Precious Gold

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–

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–

Luxury Pink

Jewel Pink

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–

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–

Ocean Blue

Forest Green

z

–

–

–

Blazing Red

Indigo Blue

z

–

z

–

Jewel Pink

Pure White

–

–

–

z

NWD-E025F Urban Black

Shiny Silver

z

–

z

–

Pure White

Precious Gold

z

–

–

–

Luxury Pink

Jewel Pink

z

–

–

–

Ocean Blue

Forest Green

z

–

–

–

Blazing Red

Indigo Blue

z

z

z

z