Iriver AK-Jr User Guide
AK Jr
INSTRUCTION BOOK
User Guide
CONTENTS
_01
Start
Components
Names of parts
Power supply management
Connecting
Upgrading the firmware
02
03
04
05
10
Using the Device
Basic operations
Listening to the music
USB DAC Functionality
Using Bluetooth
Settings
Miscellaneous
Safety cautions
Problem-solving
Copyright
Certification
Registered trademark
Escape clause
Specifications
_03
_02
11
11
14
17
19
21
22
24
25
25
25
26
User Guide
Components
Components may be changed without prior notice to
improve the performance or quality of the product.
AK Jr
2 sheets of
protective film
Micro USB cable
Protective film: It protects the appearance of the product.
Micro USB cable: You can connect the product to the
computer and charge it.
Quick start guide: It describes the basic method of
using the product.
Warranty Card: Please keep the product warranty card in a
safe place for use in the event your product needs service.
Micro SD Card Slot Cover: When there is no micro SD
card, this cover protects the slot.
It is installed in the product by default.
User guide: Download the user guide from [Support >
download in http://www.astellnkern. com/].
Quick Start Guide
& Warranty Card
Micro SD Card
Slot Cover
Start
02
User Guide
Names of
parts
The appearance of the product, printed and engraved
information may vary depending on the model.
Earphone Power Micro USB terminal
Previous/
Rewind
Play/
Pause
Next/
Fast
forward
Earphone terminal: Connect the earphone and output
sound through the earphone.
Power: short press- Turns the screen on or off.
Long press- Turns the product on and off.
Micro USB terminal: Connect to a computer or charge the device.
Previous/Rewind: Play the previous song or restart the song.
Long press- Rewind.
Play/Pause: Play or Pause a song.
Long press- Display the playback screen.
Next/Fast Forward: Skip to the next song.
Long press - Fast forward.
Touch LCD: Display the screen, and touch the screen to start.
Micro SD card slot: Insert the micro SD card to view saved files.
Volume: Control the volume by turning the wheel.
Micro SD
card slot
Volume
Touch LCD
Start
03
User Guide
Power
supply
management
Turn on/off
1. Long press the [ ] button to turn on the device.
2. When the device is turned on, press and hold the
[ ] key to turn it off.
This device has an automatic shutdown feature to
reduce battery consumption. The device will turn off after
a defined period when there is no user input according to
the [ - Power settings - Auto power off]. (See page 20.)
Turn on/off the screen
1. When the screen is turned off, press the [ ] key
to turn it on.
2. If you press the [ ] key again, the screen will be
turned on.
This device has an automatic timeout feature to reduce
battery consumption. The screen will turn off after a
certain period when there is no user input according to
the [ - Power settings - Screen Timeout]. (See page 20.)
Using the reset function
1. If the product malfunctions or stops while in use, press
the [ ] key for more than 10 seconds to turn it off.
Then you can turn it back on and use it.
When you use the reset function, the current time and
memory data will not be deleted.
Do not use the reset function while the product is in
use. It may seriously damage the memory.
Start
04
User Guide
Charging
1. Turn on the computer.
2. If you use a Micro USB cable to connect the product
to the computer, the built-in battery will be charged
automatically.
If you connect it to the PC for charging, the charging
time may vary depending on whether it is turned On or Off.
If you use a separate 5V 2A output adapter to charge
it, it will take up to 4 hours. (Assuming full discharge
and power OFF)
If the device is On and/or being used while charging, the
charge time may be longer or the battery may not fully
charge. Charging with the device turned Off is recommended.
The device may not be charged if the PC or USB
connection goes into standby/sleep mode.
The device may charge slowly or not charge at all in
extreme temperatures. Charging in a room-temperature
setting is recommended.
The built-in battery will gradually lose capacity over
time according to the number of charges/discharges.
Check if it is connected to the high-power USB 2.0 port.
A low-powered USB port (i.e. keyboard or USB hub
without a dedicated power supply) will increase the
charge time.
Do not use any Micro USB cable other than the one
provided with the product.
It may cause malfunction.
Connecting
Connecting the earphone
1. Connect the earphone to the earphone terminal of
the product.
Start
05
User Guide
Connecting to a computer
1. Turn on the product and computer.
2. When you use a Micro USB cable to connect the
product and the computer, the connection mode
selection window will be displayed on the screen.
Charging and playback: You can play back while
charging the product.
Connect removable disk: It can transmit data while
connected to a computer.
Using it as USB DAC: You can listen to music from
a PC on the device.
Connect the computer and the product when all
functions are stopped.
Do not use any Micro USB cable other than the one
provided with the product. It may cause malfunction.
Please connect it to the high-power USB 2.0 port. If
you connect the product to a keyboard or a USB hub
without its own power supply, it may not be connected
to the computer.
Only the FAT 32 file system is supported, and if you
format the product, please use the format function of
the device (See [System information] on page 20 ).
MAC users must use the format function of the device to
format it. The device may fail to recognize files at times.
Start
06
User Guide
Disconnecting it from the computer
1. Click the icon displayed in the task bar of the
computer screen to safely remove it.
2. Click [OK] to confirm that the device has stopped.
An icon may be hidden in the task bar depending on
the operating system like Windows XP. When you
click the hidden icon, it will be displayed.
If application programs like Windows Explorer or
Windows Media Player are working, you may not be
able to safely remove it.
Safely remove it after exiting all application programs.
If the hardware is not safely removed, safely remove it
again a little later. If it is not safely removed, the
information in the memory may be lost.
Copy files (folder) to the product
1. If you select the file/folder to copy from the computer,
and drag&drop it to the drive added by the product,
the selected file/folder will be copied.
Start
07
User Guide
Make sure that the Micro-USB cable is securely
connected.
If the computer or product is turned off or the Micro
USB cable is removed while the file/folder is being
copied or removed, the memory can be seriously
damaged. So please use caution.
The transmission speed may slow down depending
on the computer and OS environment of the user.
If you saved the file using a removable disk, re-generate
the DB in [ - Re-generate DB].
Delete the files (folders) of the product
1. Select the file/folder to delete, right-click the mouse,
and select [Delete].
2. Select [Yes] in the [Confirm File/Folder Deletion]
window to delete the selected files/folders.
Start
08
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