9
Before requesting service, make the following checks. If you are in doubt about
some of the check points, or if the remedies indicated do not solve the problem,
consult your dealer for instructions.
General
The unit does not respond
• Push button for 10 seconds. The unit will be reset.
(The pairing device information will not be deleted.)
Power supply and charging
Cannot charge the unit
• Make sure the computer is turned on and is not on standby or sleep mode.
• Is the USB port you are currently using working properly? If your computer has
other USB ports, unplug the connector from its current port and plug it into one of
the other ports.
• If the measures mentioned above are not applicable, unplug the USB charging
cord and plug it in again.
• If the charge time and operating time become shortened, the battery may have
run down. (Number of charging times of the installed battery: Approximately
300.)
Charging takes longer
• Charge in a room temperature of between 10 °C and 35 °C.
LED does not light during charging
• Is the USB charging cord (supplied) connected firmly to the USB terminal of the
computer? (→ P. 4)
The power does not turn on
• Is the unit being charged? The power cannot be turned on during charging.
(→ P. 4)
Bluetooth
®
device connection
The device cannot be connected
• Delete the pairing information for this unit from the Bluetooth
®
device, then pair
them again. (→ P. 5)
Troubleshooting guide
Sound and audio volume
No sound
• Make sure that the unit and the Bluetooth
®
device are connected correctly.
(→ P. 5)
• Check if music is playing on the Bluetooth
®
device.
• Make sure that the unit is turned on and the volume is not set too low.
• Pair and connect the Bluetooth
®
device and the unit again. (→ P. 5)
Low volume
• Increase the volume of the unit. (→ P. 6)
• Increase the volume on the Bluetooth
®
device.
Sound from the device is cut off / Sound quality is bad
• Sound may be disrupted if signals are blocked. Do not fully cover this unit with
the palm of your hand, etc.
• The device may be out of the 10 m communication range. Move the device
closer to this unit.
• Remove any obstacle between this unit and the device.
• Switch off any wireless LAN device when not in use.
• A communication problem may arise if the battery is not fully charged. Charge
the unit. (→ P. 4)
Phone calls
You cannot hear the other person
• Make sure that the unit and the Bluetooth
®
enabled phone are turned on.
• Check if the unit and the Bluetooth
®
enabled phone are connected. (→ P. 5)
• Check the audio settings of the Bluetooth
®
enabled phone. Switch the calling
device to the unit if it is set to the Bluetooth
®
enabled phone. (→ P. 5)
• If the volume of the other person’s voice is too low, increase the volume of both
the unit and the Bluetooth
®
enabled phone.
