Owner's Manual

21
Troubleshooting
Problem Solution
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, take the
headphones out again.
When switching to a new Bluetooth device, you may not be able to pair
because the previously connected Bluetooth device cannot be disconnected.
In such cases, place the headphones into the charging case (with battery level
remaining for the case) and press and hold (about 6 seconds) the multifunction
buttons on both the R (right) and L (left) sides. The indicator lamp lights in red.
After lighting in red, the product will switch to the “searching for devices” state
and you will be able to pair with your desired Bluetooth device.
While searching, this product may be displayed as "ATH-CKS5TW", "BLE_ATH-
CKS5TW", or both on your Bluetooth device. If both are displayed, select "ATH-
CKS5TW". If only one is displayed, select that one.
If you pair again after pairing once, “ATH-CKS5TW” or “L_ATH-CKS5TW” may
be displayed. Select either one to pair.
There may be a problem with the Bluetooth device. In such case, turn off and
on the Bluetooth device. The problem may be solved.
No sound is heard / Sound is
faint.
Turn on the power of the product and the Bluetooth device.
Turn up the volume.
Make sure that this product and Bluetooth device are connected by the A2DP
(or audio connection).
Disable pairing for this 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 this product.
L (left) and R (right) are not
connected (sound does not come
out from the L (left) side).
Check if there is no battery level remaining.
Place the headphones in the charging case and close the cover. Then, take the
headphones out again.
If they are not connecting even after trying the above, the L (left) and R (right)
may be disconnected. Use the following procedure to pair the product again
and connect them.
- Place the headphones into the charging case (with battery level remaining
for the case) and press and hold (about 6 seconds) the multifunction buttons
on both the R (right) and L (left) sides. The indicator lamp lights in red. After
lighting in red, the product will switch to the “searching for devices” state
and you will be able to pair with your desired Bluetooth device. L (left) and R
(right) are connected and pair the product again.