No sound from one side of the earphones


If no sound is heard from one side of the earphones, restoring the settings of the earphones to the initial state may solve the problem.
Follow the steps below to check whether there is any abnormality with the sound output.

Restoring settings to the initial state

  1. Insert the earphones into the charging case

  2. charging_A7T_1

    After a few seconds, the indicators on the earphones and charging case will turn on.


    Click here if the indicators do not light up or start flashing >>

  3. Press and hold the button on both sides of the earphones for about 15 seconds to initialize

  4. initialize_A7T

    After pressing and holding the button for 10 seconds, the indicator “flashes once”. Continue pressing for another 5 seconds until the indicator “flashes once” again.

    If you release your finger before the second time the indicator “flashes once”, initialization will not be complete.
    If you released your finger too early, perform the initialization process again from the start.

    Check that indicators on both earphones are turned off before performing the next operation.

  5. Delete the registration information of the earphones from the BLUETOOTH® settings

  6. connecting_smp_1
    release_smp_1 + Device List Release JVC Nav

    JVC HA-A7T

    release_smp_2 + Release JVC Nav

    Unpair this device

  7. Remove both earphones from the charging case at the same time and place them back in again

  8. connecting_A7T_1
  9. After the indicators on the earphones and charging case are lit, remove both sides of the earphones at the same time

  10. charging_A7T_2

    The L and R sides are automatically connected to each other, and the earphones are restored to the initial settings.

    After taking out the earphones, move the L and R earphones close to the device to pair with.

    Wait for a short while. When the L indicator starts to flash quickly, the earphones are ready for device pairing.

Connecting to a Device

    Turn on the BLUETOOTH® connection setting of the device and select “JVC HA-A7T”
    connecting_smp_3 + Device List JVC Nav

    JVC HA-A7T


    The earphones are connected to the device if the indicators on both sides of the earphones are flashing every 5 seconds.

Apps and Volume Control on the Connected Device

  1. Open an app and play

  2. app_01
  3. Adjust the volume

  4. volume_smp_1

Select the state after checking

Thank you for using Troubleshooting Guide.

There seems to be a problem with the product.
If you require more assistance, please contact your local JVC customer support.

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