21
Device does not power on.
Push the button for 3 seconds.
If device does not power on, connect the recommended charger cable.
Check that the device is charging by the flashing LED light.
If charging takes place, charge fully until the LED is yellow.
If it does not work after charging, it is because battery expired or a battery failure.
Do not attempt to exchange the battery, please contact customer service center.
Even though it is fully charged, its usage time is short.
Check that the rated voltage and current capacity of the charger is 5V, DC and
more than 1A.
If charger current is less than 1A, the charging time of the battery takes longer.
If device can not be operated for more than 10 minutes after charging for more
than 2 hours by recommended charger, the battery is expired.
And then, do not attempt to disassemble the device or exchange the battery.
Please contact customer service center.
During charging, the device emits smoke or makes noise.
Unplug the charger cable from device and contact customer service center.
During operation, there is no sound from the device.
This is a failure of built-in speaker or device. Do not attempt to disassemble the
device and contact customer service center.
The device is not working properly.
Use the device in appropriate places where the temperature or humidity is neither
too high nor low.
If the problem is not solved, do not attempt to disassemble or change the device
and contact customer service center.
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Troubleshooting