27 GB/IE/NI
= No functions
= Battery drained.
= Recharge the battery as described in
“Charging the charging /storage box
battery“.
= No Bluetooth connection
= Error operating the headphones.
= Switch the headphones off and on again.
= Bluetooth device error.
= Separate the connection to the headphones.
Reconnect.
= Check if other devices using Bluetooth
standard 5.0 work with the Bluetooth device.
= Bluetooth connection error.
= Move closer to the devices connected via
Bluetooth.
= No sound
= The headphones volume is set to Minimum.
= During playback, press and hold the
MF button
1
of the right headphone to
increase the volume.
= Error operating the Bluetooth device.
= Increase the volume on the playback device.
= Bluetooth connection error.
= Move closer to the devices connected via
Bluetooth.