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Troubleshooting
Power is not supplied
Charge the product.
Unable to pair
Confirm that the Bluetooth device communicates using Ver. 2.1+EDR or higher.
Place the product and the Bluetooth device within 1 m (3.3') of each other.
Set the profiles for the Bluetooth device. For procedures on how to set profiles, refer to the Bluetooth
device’s user manual.
Remove the pairing information for the Bluetooth device then pair the product with this device again.
Place the headphones in the charging case and close the cover, then remove the headphones and perform
the operation again.
“R_ATH-CKR70TW”, “BLE_R_ATH-CKR70TW”, or both may be displayed when pairing. If both are
displayed, select “R_ATH-CKR70TW”. If only one is displayed, select that one.
Make sure you are not connected to any other previously connected Bluetooth device. If so, disconnect the
product using the previously connected Bluetooth device, and then select the product on the Bluetooth
device being connected to. Use forced pairing mode if you are unable to disconnect from a previously
connected Bluetooth device. For details, refer to "If the product does not connect to a device (forced pairing
mode)" (p. 32).
Reset the product if it cannot be unpaired, connected, or does not operate as expected even after trying all
other solutions. For details, refer to "If the product operates abnormally (reset)" (p. 32).
No sound is heard / Sound is faint
Turn on the power of the product and the Bluetooth device.
Turn up the volume on the product and the Bluetooth device.
Make sure that the product and Bluetooth device are connected by the A2DP (or audio connection).
Disable pairing for the product and the Bluetooth device, then pair the product with this device again.
Move away from obstacles between the product and the Bluetooth device, such as people, metal, or walls,
and place the product and device closer together.
Switch the sound output of the Bluetooth device to the product.
Check whether the quick hear-through function is turned on/off. If the quick hear-through function is on, the
volume of music being played back will decrease automatically. Touch the touch sensor on the R (right) side
headphone twice in a row to turn the quick hear-through function on or off.
Sound only comes out of one headphone
Make sure there is battery level remaining.
