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Troubleshooting: When you think, “Is it broken?”
Troubleshooting: When you think, “Is it broken?”
Earphone batteries
are depleted
MFB has not been
pressed for
adequate time
(Immediately after
purchasing)
Battery charge is low
Earphones will
not turn ON
Earphones will
not turn OFF
Problem
Remedy
Cause
Please place the earphones in the charging case
and charge them. (In case the charge in the
charging case has run out, first charge the charging
case.) Please refer to “Power/Charging” on P.3
regarding the method for charging.
An error has occurred
due to improper
operation
In some cases, performing a reset operation may fix
the problem. Please refer to “Factory reset method”
on P.5. regarding the reset method.
MFB has not been
pressed for
adequate time
Please press the MFB button long enough for the
earphone to turn OFF. Please refer to “Turning off
the earphones” on P.4 regarding the method for
turning the earphones OFF.
Please press the MFB button long enough for the
earphone to turn ON. Please refer to “Turning on the
earphones” on P.3 regarding the method for turning
the earphones ON.
For safety of transportation from overseas, laws and
regulations do not allow the internal battery to be fully
charged at the time of shipping. For that reason, voltage
may fall below the level required for operation at the time
the customer opens the package. Fully charging the
battery before use may relieve this inconvenience.
Please refer to “Power/Charging” on P.3 regarding the
method for charging.
Has automatically
been connected to
a previously
connected device
Earphones
cannot be
detected /
paired
While playing
music, sound
(connection) is
interrupted
Problem
Remedy
Cause
Please try performing the pairing operation again after
having deleted the pairing information from a
previously paired device.
Receives interference
from external factor,
and an impact
on the connection
status results
Bluetooth communicates using the 2.4GHz band.
This band is used by other wireless standards such
as Wi-Fi, etc., and so there is a possibility of
receiving interference. Moreover, this 2.4GHz band
does not penetrate liquids. There is impact from
humidity and rain, and the human body also
contains liquid, so there are individual differences in
connectivity. Furthermore, it depends on the
specifications of smart phones and other devices.
For that reason, switching OFF unused Wi-Fi/
Bluetooth settings on surrounding devices, etc. is a
countermeasure. While outside, there is a possibility
that moving a smartphone from inside a bag to a
breast pocket, etc. or otherwise reducing the
distance between devices may improve the
connection status.
Earphones are not
in the pairing mode
Earphones
cannot be
detected / paired
In some cases, performing a reset operation may fix
the problem. Please refer to “Factory reset method”
on P.5. regarding the reset method.
Using ear tips other
than those included
as accessories
Metal contact on
earphone is not
touching the pins
on the charging case
Charging case
battery charge is low
Earphones
cannot be
charged
When ear tips other than those included as accessories
are used, there are cases in which they may interfere
with the charging case and make satisfactory
charging impossible. Please check to see whether
proper charging is possible using original ear tips.
Charging case
battery charge is low
In some cases, the battery remaining in the charging
case drops before you notice. After once charging
the charging case, place the earphones in the
charging case and check that the LED indicator
illuminates. Please refer to “Power/Charging” on P.3
regarding the method for charging.
Using ear tips other
than an accessory
When ear tips other than those included as accessories
are used, there are cases in which they may interfere
with the charging case and make satisfactory
charging impossible. Please check to see whether
proper charging is possible using original ear tips.
Please check that there is adequate contact
between the metal contacts and the pins on the
charging case.
In some cases, the battery remaining in the charging
case drops before you notice. After once charging
the charging case, place the earphones in the
charging case and check that the LED indicator
illuminates. Please refer to “Power/Charging” on P.3
regarding the method for charging.
The battery of one side
of the earphones
has depleted
The output of the USB
adapter being used
for charging is low
The left/right earphone
pairing has been
released
Sound only
comes out
from one side
In case it takes
time to charge
Battery
consumption
is fast for
one side of the
earphones only
Mobile battery
is not
functioning
Please place the earphones in an adequately charged
charging case and charge the earphones. Please refer
to “Power/Charging” on P.3 regarding the method for
charging.
Based on the design
specification, one side
is the parent and the
other side is the child,
so the burden between
left and right is
different
Under the specification for Bluetooth earphones,
communication generally takes place with one side
as the parent and the other as the child.
As such, the child only communicates with the
parent, but the parent communicates with the
smartphone or other device and communicates with
the child as well, and so there is a difference in the
level of burden borne by the left and right earphone.
As a result, a difference in the battery consumption
between the left and right may occur.
In case you are using the USB port on a PC, etc.,
there are cases in which the output is low and it may
take more time to charge than the publicly listed value.
As such, please use a 5V/1A USB adapter when
charging this product.
In some cases, performing a reset operation may fix
the problem. Please refer to “Factory reset method”
on P.5. regarding the reset method.
The charging case can perform as a mobile battery by connecting a compatible cable to its USB
(Type-C) port. To use it as a mobile battery, please first connect a compatible cable to the case,
and then connect the cable to the device which is to be charged.
*Please ensure that the order of cable connection to be correct before using this function. If the
connection order is incorrect, the device you want to charge might not be charged properly.
*Please check the orientation of the terminals before plugging in to avoid damage to the connector.
*There is the possibility that this function is not working on certain devices.
*The output is DC5V / 1A max. Please check in advance whether the connected device is
compatible.
*Only the cable for charging case charging is included. To use this function to charge other
devices, please prepare a compatible adapter or a compatible cable separately.
Charging case
battery charge is low
In some cases, the battery remaining in the charging
case drops before you notice. After once charging
the charging case, place the earphones in the
charging case and check that the LED indicator
illuminates. Please refer to “Power/Charging” on P.3
regarding the method for charging.
The connection order
is incorrect
If the connection order is incorrect, the device you
want to charge might not be charged properly.
Please refer to "Mobile Battery Function" on P.5
regarding the correct connection order.
The direction of the
cable connection is
incorrect
Depending on the cable used, the device might start
charging by the charging case simply by
interchanging the side of the cable. Please attempt
to switch the connection side of the cable terminals.
Please refer to "Mobile Battery Function" on P.5.
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