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2014A33-1

© 

2014.01

Note:
Be sure to keep your PC used for service and 
checking of this unit always updated with the 
latest version of your anti-virus software.
In case a virus affected unit was found during 
service, contact your Service Headquarters. 

Photo: ICD-UX543F

Capacity (User available capacity: when the built-in 
memory is formatted with the IC recorder)
ICD-UX543/UX543F
4 GB (approx. 3.60 GB = 3,865,470,566 Byte)
ICD-UX544F
8 GB (approx. 7.20 GB = 7,730,941,132 Byte)
A small amount of the built-in memory is used for file 
management and therefore not available for user storage. 
Maximum number of folders (for a drive)
400 folders

Maximum number of files (for a folder)
199 files
Maximum number of files (for a drive)
4,074 files (When 21 folders are contained in a drive.)

Frequency range
LPCM 44.1kHz/16bit: 50 Hz - 20,000 Hz
MP3 192kbps: 50 Hz - 20,000 Hz
MP3 128kbps: 50 Hz - 16,000 Hz
MP3 48kbps(MONO): 50 Hz - 14,000 Hz
MP3 8kbps(MONO): 50 Hz - 3,400 Hz

Compatible file formats
MP3 (*1)
Bit rate: 32 kbps - 320 kbps (Supports variable bit rate (VBR))
Sampling frequencies: 16/22.05/24/32/44.1/48 kHz
File extension: .mp3
WMA (*2)
Bit rate: 32 kbps - 192 kbps (Supports variable bit rate (VBR))
Sampling frequencies: 44.1 kHz
File extension: .wma
AAC-LC (*3)
Bit rate: 16 kbps - 320 kbps (Supports variable bit rate (VBR))
Sampling frequencies: 11.025/12/16/22.05/24/32/44.1/48 kHz
File extension: .m4a
LPCM
Sampling frequencies: 44.1 kHz
Quantization bit rate: 16 bit
File extension: .wav

radio reception (*4)
For Korea
87.5 MHz - 108.0 MHz
IF 128 kHz
For other countries and regions
87.50 MHz - 108.00 MHz
IF 128 kHz
FM antenna (*4)
Stereo headphone cord antenna

Speaker
Approx. 16 mm (13/16 in.) dia.
Input/Output
Microphone jack (minijack, stereo)
input for plug in power, minimum input 

level 1.0 mV
Headphone jack (minijack, stereo)
output for 16 ƻ impedance headphones
USB connector (Type-A)
High-Speed USB compatible
Card slot
Memory Stick Micro™ (M2™)/

microSD memory card slot

Playback speed control (DPC)
2.00 times - 0.50 times
MP3/WMA/AAC-LC
1.00 time - 0.50 times
LPCM
Power output
150 mW

Power requirements
Built-in rechargeable lithium-ion battery: 3.7 V DC

Operating temperature
5 °C - 35 °C (41 °F to 95 °F)
Dimensions (w/h/d) (not incl. projecting parts and controls) 
(JEITA) (*5)
Approx. 36.6 mm × 101.5 mm × 10.5 mm (1 1/2 in. × 4 in. × 7/16 in.)
Mass (JEITA) (*5)
Approx. 49 g (1 3/4 oz)

Design and specifications are subject to change without notice.

*1

 The playback of MP3 files recorded using the IC recorder is also supported. Not all 

encoders are supported. 

*2

 WMA Ver. 9 is compatible, however, MBR (Multi Bit Rate), Lossless, Professional, and 

Voice are not supported. Copyright-protected file cannot be played back. Not all encoders 
are supported.

*3

 Copyright-protected file cannot be played back. Not all AAC encoders are supported.

*4

 ICD-UX543F/UX544F only

*5

 Measured value by the standard of JEITA (Japan Electronics and Information 

Technology Industries Association)

USB connection support cable (1) 
Carrying pouch (1) (Except Canadian and Latin American models)
Quick Start Guide
Application Software, Sound Organizer (Installer file stored in the built-in 

memory so that you can install it to your computer.) (Except Chinese 

model)
Help Guide (HTML file stored in the built-in memory so it can easily 

be copied to your computer.) 

Stereo headphones (1)

– Continued on next page –

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

CAUTION
Risk of explosion if battery is replaced by an incorrect type.
Dispose of used batteries according to the instructions of batter-
ies.

MP3 48kbps(MONO)
Built-in memory
ICD-UX543/UX543F: 178 h.
ICD-UX544F: 357 h.
Memory card
2 GB: 89 h. 25 m.
4 GB: 178 h.
8 GB: 357 h.
16 GB: 715 h.
32 GB: 1,431 h.
MP3 8kbps(MONO)
Built-in memory
ICD-UX543/UX543F: 1,073 h.
ICD-UX544F: 2,147 h.
Memory card
2 GB: 536 h.
4 GB: 1,073 h.
8 GB: 2,147 h.
16 GB: 4,294 h.
32 GB: 8,589 h.
(h.: hours/m.: minutes)

*

 Default settings for the recording scenes

When you are going to record continuously for a long 
time, you may need a USB AC adaptor (not supplied). 
For details on the battery life, see “Battery life.”

‡

The maximum recording time in this topic for your 
reference only, and may differ depending on the card 

specifications.

‡

Maximum recording time

The maximum recording time of all the folders is as follows.

LPCM 44.1kHz/16bit
Built-in memory
ICD-UX543/UX543F: 6 h.
ICD-UX544F: 12 h. 5 m.
Memory card
2 GB: 3 h.
4 GB: 6 h.
8 GB: 12 h. 5 m.
16 GB: 24 h. 15 m.
32 GB: 48 h. 40 m.

Built-in memory
ICD-UX543/UX543F: 44 h. 40 m.
ICD-UX544F: 89 h. 25 m.
Memory card
2 GB: 22 h. 20 m.
4 GB: 44 h. 40 m.
8 GB: 89 h. 25 m.
16 GB: 178 h.
32 GB: 357 h.
MP3 128kbps (

Built-in memory
ICD-UX543/UX543F: 67 h. 5 m.
ICD-UX544F: 134 h.
Memory card
2 GB: 33 h. 30 m.
4 GB: 67 h. 5 m.
8 GB: 134 h.
16 GB: 268 h.
32 GB: 536 h.

Maximum playback time of a music 

file/number of files

48 kbps (*)
ICD-UX543/UX543F
Playback time: 178 h.
Number of files: 2,670 files
ICD-UX544F
Playback time: 357 h.
Number of files: 5,355 files
128 kbps (*)
ICD-UX543/UX543F
Playback time: 67 h. 5 m.
Number of files: 1,006 files
ICD-UX544F
Playback time: 134 h.
Number of files: 2,010 files

256 kbps (*)
ICD-UX543/UX543F
Playback time: 33 h. 30 m.
Number of files: 502 files
ICD-UX544F
Playback time: 67 h. 5 m.
Number of files: 1,006 files
(h.: hours/m.: minutes)

*

 In the case where MP3 files of 4 minutes each are transferred to the 

 IC recorder.

Battery life

LPCM 44.1kHz/16bit
Recording: Approx. 22 h.
Playback through speaker (*3): Approx. 5 h.
Playback using the headphones: Approx. 30 h.
FM recording (*4): —

MP3 192kbps
Recording: Approx. 26 h.
Playback through speaker (*3): Approx. 5 h.
Playback using the headphones: Approx. 45 h.
FM recording (*4) : Approx. 8 h.

MP3 128kbps
Recording: Approx. 26 h.
Playback through speaker (*3): Approx. 5 h.
Playback using the headphones: Approx. 45 h.
FM recording (*4): Approx. 8 h.
MP3 48kbps(MONO)
Recording: Approx. 26 h.
Playback through speaker (*3): Approx. 5 h.
Playback using the headphones: Approx. 45 h.
FM recording (*4): Approx. 8 h.
MP3 8kbps(MONO)
Recording: Approx. 30 h.
Playback through speaker (*3): Approx. 5 h.
Playback using the headphones: Approx. 45 h.
FM recording (*4): Approx. 8 h.
Music file (128 kbps/44.1kHz)
Recording: —
Playback through speaker (*3): Approx. 5 h.
Playback using the headphones: Approx. 45 h.
FM recording (*4): —
FM reception (*4)
Playback using the headphones: Approx. 8 h.
(h.: hours/m.: minutes)

*1

 Measured value by the standard of JEITA (Japan Electronics and 

Information Technology Industries Association). The battery life may 
shorten depending on how you operate the IC recorder.

*2

 When setting “Screen Off Ti

*4

 ICD-UX543F/UX544F only

mer” to “Auto Screen Off” 

*3

 When playing back music through the internal speaker with the 

 volume level set to 27

About compatible memory card

You can use the following memory cards with the IC recorder.

microSD cards of up to 2 GB: supported

‡

microSDHC cards from 4 GB to 32 GB: supported

‡

microSDXC cards of 64 GB or more: not supported

‡

M2™ cards of up to 16 GB: supported

‡

Due to the file system specifications of the IC recorder, you can record 
and play back an LPCM file smaller than 2 GB, and an MP3/WMA/AAC-LC 
file smaller than 1 GB using a memory card.

In this Help Guide, M2™ and microSD cards are generally referred to as 
a “memory card.” The M2™/microSD card slot is referred to as the 
“memory card slot.”

‡

Operations of all types of compatible memory cards are not guaranteed.

‡

System requirements 

When you use the IC recorder connected to a computer or as a USB mass 
storage device, your computer must meet the operating system 
requirements and port environment described below. 

Windows 8 

‡

Windows 8 Pro 

‡

Windows 8.1 (Canadian, AEP and Latin American models)

‡

Windows 8.1 Pro (Canadian, AEP and Latin American models)

‡

Windows 7 Ultimate Service Pack 1 or higher

‡

Windows 7 Professional Service Pack 1 or higher

‡

Windows 7 Home Premium Service Pack 1 or higher

‡

Windows 7 Home Basic Service Pack 1 or higher

‡

Windows 7 Starter Service Pack 1 or higher

‡

Windows Vista Ultimate Service Pack 2 or higher

‡

Windows Vista Business Service Pack 2 or higher

‡

Windows Vista Home Premium Service Pack 2 or higher

‡

Windows Vista Home Basic Service Pack 2 or higher

‡

Windows XP Media Center Edition 2005 Service Pack 3 or higher

‡

Windows XP Media Center Edition 2004 Service Pack 3 or higher (*) 

‡

Windows XP Professional Service Pack 3 or higher

‡

Windows XP Home Edition Service Pack 3 or higher

‡

Mac OS X (v10.5-v10.8) (E, Korean and Chinese models)

‡

Mac OS X (v10.5-v10.9) (Canadian, AEP and Latin American models)

‡

Pre-installed

*

 Excluding China 

One of the above operating systems should be by default pre-installed. 
Any operating system other than those indicated above (Windows 98, 
Windows 2000 or Linux, etc.), upgraded operating systems or multi-
boot environment are not supported. 

‡

64 bit versions of Windows XP are not supported. 

‡

For the latest version information and compatibility with your operating 
system, please access the support home page for the IC recorder (see 
“Customer support websites”). 

‡

Sound board: Sound boards compatible with any of the supported 
operating systems 

‡

Port: USB port 

‡

Disk drive: To create a music CD, you need a CD-R/RW drive. 

‡

The following systems are not supported: 

Operating systems other than the ones indicated in this topic 

‡

Personally constructed computers or operating systems 

‡

Upgraded operating systems 

‡

Multi-boot environment 

‡

Multi-monitor environment 

‡

System requirements for using Sound Organizer

The following shows the system requirements for using Sound Organizer. 

Windows 8 

‡

Windows 8 Pro

‡

Windows 8.1 (Canadian, AEP and Latin American models)

‡

Windows 8.1 Pro (Canadian, AEP and Latin American models)

‡

Windows 7 Ultimate 

‡

Windows 7 Professional 

‡

Windows 7 Home Premium 

‡

Windows 7 Home Basic 

‡

Windows 7 Starter 

‡

Windows Vista Ultimate Service Pack 2 or higher

‡

Windows Vista Business Service Pack 2 or higher

‡

Windows Vista Home Premium Service Pack 2 or higher

‡

Windows Vista Home Basic Service Pack 2 or higher

‡

Windows XP Media Center Edition 2005 Service Pack 3 or higher

‡

Windows XP Media Center Edition 2004 Service Pack 3 or higher (*) 

‡

Windows XP Professional Service Pack 3 or higher

‡

Windows XP Home Edition Service Pack 3 or higher

‡

Pre-installed

*

 Excluding China 

One of the above operating systems should be by default pre-installed. 
Upgraded operating systems or multi-boot environment are not 
supported. 

‡

64 bit versions of Windows XP are not supported. 

‡

CPU

‡

Windows XP: Pentium III processor of 500 MHz or faster 
Windows Vista: Pentium III processor of 800 MHz or faster 
Windows 7: Pentium III processor of 1 GHz or faster 

Windows 8.1: Pentium III processor of 1 GHz or faster

Windows 8: Pentium III processor of 1 GHz or faster

Memory

‡

Windows XP: At least 256 MB 
Windows Vista: At least 512 MB (In the case of Windows Vista 
Ultimate/Business/Home Premium, at least 1 GB is recommended.) 
Windows 7: At least 1 GB (32 bit version)/At least 2 GB (64 bit version) 

Windows 8.1: At least 1 GB (32 bit version)/At least 2 GB (64 bit version)

Windows 8: At least 1 GB (32 bit version)/At least 2 GB (64 bit version)

Free hard disk space

‡

At least 400 MB is required.
Depending on the version of Windows, more than 400 MB may be used.
Also, free space for handling music data is required.
Display settings

‡

Screen resolution: 800 × 600 pixels or higher (1,024 × 768 pixels is 
recommended.)
Screen color: High Color (16 bit) or higher 

Sound card

‡

A SoundBlaster compatible card is recommended.
USB port

‡

A compatible USB port is required to use devices and media.
Operation via a USB hub is not guaranteed except for models for which 
operation has been specifically guaranteed.
Disk drive

‡

To create a music CD, you need a CD-R/RW drive.

Trademarks

Microsoft, Windows, Windows Vista and Windows Media are registered 
trademarks or trademarks of Microsoft Corporation in the United States 
and/or other countries. 

‡

Mac OS is a trademark of Apple Inc., registered in the USA and other 
countries.

‡

Pentium is a registered trademark of Intel Corporation. 

‡

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

‡

microSD and microSDHC logos are trademarks of SD-3C, LLC. 

‡

“Memory Stick Micro,” “M2” and 

 are trademarks or registered 

trademarks of Sony Corporation. 

‡

“MagicGate” is a trademark of Sony Corporation. 

‡

Nuance, the Nuance logo, Dragon, Dragon NaturallySpeaking, and 
RealSpeak are trademarks and/or registered trademarks of Nuance 
Communications Inc., and/or its affiliates in the United States and/or 
other countries. 

‡

All other trademarks and registered trademarks are trademarks or 
registered trademarks of their respective holders. Furthermore, “™” and 
“®” are not mentioned in each case in this Help Guide. 

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.

The “Sound Organizer” uses software modules as shown below: 
Windows Media Format Runtime

ABOUT  THE  BOARDS  REPLACING
When the boards installed in this unit are defective, exchange the 
complete mounted board.
However the microphone jack (J301) and headphone jack (J302)  
on the MAIN board are exchangeable. Refer to “4. EXPLODED 
VIEWS” (page 22).

ABOUT  THE  HANDLING  OF  THE  BATTERY  SUB  
ASSY (BAT301)
When the BATTERY SUB ASSY (BAT301) is removed, insulate 
the end of wire by a tape etc. to prevent short-circuited of the wire 
part of BATTERY SUB ASSY (BAT301).

 .............................................  

3

2-1. Disassembly 

Flow 

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

2-2. Case 

(Rear) 

Assy 

.............................................................   6

2-3. Ornament 

(MIC) 

.............................................................   7

2-4. MAIN 

Board 

...................................................................   8

2-5.  Electret Cap Microphone  (L/R-ch) 

(MIC301, MIC302) .........................................................   9

2-6.  Battery Sub Assy (BAT301) ...........................................   9
2-7.  Spring Link (USB) ..........................................................   10
2-8.  Window (EL) Sub Assy ..................................................   10
2-9.  Case (Front) Block ..........................................................   11
2-10.  Speaker Sub Assy (SP1) .................................................   12

ICD-UX543

Canadian

–

z

–

–

–

AEP

z

z

–

–

z

ICD-UX543F

E

z

z

z

z

z

Chinese

z

z

z

–

z

Latin American

z

z

–

–

–

Korean

z

z

z

–

–

ICD-UX544F

Chinese

z

z

–

–

–

2-11.  USB Slide Block .............................................................   12
2-12.  Base Knob USB Assy .....................................................   13
2-13.  USB Slide Assy (USB1) .................................................   14
2-14.  Organic EL Indicator Element (EL1) ..............................   14

 ............................................................   15

4-1.  Case (Rear) Section ........................................................   22
4-2.  MAIN Board Section ......................................................   23
4-3. Chassis 

Section 

...............................................................  24

4-4.  Case (Front) Section .......................................................   25

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

3. Confi rmation and initialize method
Procedure:
1.  Slide the [POWER•HOLD] switch in the direction of “POW-

ER” until the window display appears.

2.  While pressing the [STOP/

x

] and [VOL –] keys, slide the 

[POWER•HOLD] switch in the direction of “HOLD”.

STOP / x

3.  The test mode menu is displayed, and enter the test mode. Re-

lease the [STOP/

x

] and [VOL –] keys.

4. Confi rm that the destination has been changed.
 

(Displayed characters/values in the following fi gure are ex-
ample)

<SERVICE MENU>

ICD-UX544F/CN
1.00.00

5.  Press the [

>

] or [

.

] keys to select the “MENU INIT”, and 

press the [

N

] key.

6.  Initialization is performed.

<MENU INIT>

Formatting...

7.  “Success” is displayed, and this unit reboots.

Success

ABOUT  THE  DESTINATION  SETTING  WHEN  REPLAC-
ING  THE  MAIN  BOARD
When the MAIN board of this unit is replaced, perform processing 
according to the following procedure.

Precaution
The contents which are not opened to customers are included 
in the following procedure. After you are cautious of handling of 
information, execute work under the suffi cient administration.

1.  About the preparing of tools
Confi rm the method of obtaining the tools to the service headquar-
ters.

Note: The destination setting is impossible when battery voltage is not 

enough.

 

  Do work using the battery with suffi cient battery level.

Procedure:
1.  Equip this unit with battery.
2.  Connect this unit to the PC.

3.  On PC, unzip the model setting fi le to get folder on PC.
4.  On PC, open the unzipped folder, and select the folder corre-

sponding to the model name and destination of this unit.

01.ICD-UX543_U
02.ICD-UX543_CE7
03.ICD-UX544F_CE7
04.ICD-UX543F_LA
05.ICD-UX543_CA
06.ICD-UX543F_J
07.ICD-UX544F_J

08.ICD-UX543F_CN
09.ICD-UX544F_CN
10.ICD-UX543F_KR3
11.ICD-UX543F_E

5.  On PC, copy the “DEVINFO.UPG” fi le included in the folder 

selected at step 4 to root folder of this unit.

6.  Remove this unit from the PC.

7.  “Updating” is displayed on the screen of this unit, and this unit 

is rebooted automatically.

          Updating...

8.  The destination setting is completed.