Frequently Asked Questions - Philips Fidelio L4 User Manual

8 Frequently
asked
questions
My Bluetooth headphones do not turn
on.
The battery level is low. Charge the
headphones.
I cannot pair my Bluetooth headphones
with my Bluetooth device.
The Bluetooth is disabled. Enable the
Bluetooth feature on your Bluetooth
device and turn on the Bluetooth device
before you turn on the headphones.
How to factory reset.
Press/hold both Power button and ANC
for 3s with USB power removed.
I hear but cannot control music on my
Bluetooth device (e.g. play/pause/skip
forward/backward).
Make sure the Bluetooth audio source
supports AVRCP (see 'Technical data' on
page 11).
The volume level of the headphones is
too low.
Some Bluetooth devices cannot link the
volume level with the headphones
through volume sync. In this case, you
have to adjust the volume on your
Bluetooth device independently to
achieve an appropriate volume level.
Your headphones cannot charge with
other USB cable.
The product does not support USB type C
to USB type C charging cable.
Please always use the supplied USB
charging cable (USB type A to USB type C).
16 EN
The Bluetooth device cannot �nd the
headphones.
• The headphones may be connected
to a previously paired device. Turn off
the connected device or move it out
of range.
• Pairing may have been reset or the
headphones have been previously
paired with another device. Pair the
headphones with the Bluetooth
device again as described in the user
manual. (see 'Pair the headphones
with your Bluetooth device for the
�rst time' on page 6).
My Bluetooth headphones are
connected to a Bluetooth stereo enabled
mobile phone, but music only plays on
the mobile phone speaker.
Refer to the user manual of your mobile
phone. Select to listen to music through
the headphones.
The audio quality is poor and crackling
noise can be heard.
• The Bluetooth device is out of range.
Reduce the distance between your
headphones and Bluetooth device, or
remove obstacles between them.
• Charge your headphones.
Clean your headphones regularly.
• Use a clean, damp cloth to clean your
headphones - especially the sound
conduits and the microphone holes -
regularly and avoid buildup of
substances such as sweat or earwax.
• If any sweat or water droplets are left
in the sound conduits, air holes or
microphone holes, the sound level
will temporarily drop or cut out
entirely. This is not a malfunction. Use
a soft, damp cloth to dry the head-
phones thoroughly. Alternatively,