No sound from one side of the earphones

one_side_sound_none

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

Initializing

First of all, go to the Bluetooth settings of the device to be connected and delete the information of this unit that is registered on it.

Charge the charging case beforehand.

Follow the steps below to initialize the settings of both L and R earphones.

  1. Remove the L earphone from the charging case

    2. Initializing_1_A4T

    Make sure that the Bluetooth device is not connected (the indicator flashes twice every 5 seconds, or flashes quickly repeatedly).

  2. Tap the touch sensor area 3 times (for the third time, keep touching until the indicator lights up)

    3. Release your finger after the indicator lights up.

    Initializing_L_A4T_New + Initializing_L_A4T_New

    Touch sensor area

    Release your finger after the indicator lights up.

    Touch and hold

    The indicator lights up for 5 seconds.

  3. Tap the touch sensor area twice while the indicator is lighting up

    4. The indicator will flash and then go out, and the power will be turned off.

    If you do not tap the touch sensor twice while the indicator is lit, start again from step 2.

  4. Insert the L earphone into the charging case

    5. Initializing_2_A4T

  5. Remove the R earphone from the charging case

    6. Initializing_3_A4T

    Make sure that the Bluetooth device is not connected (the indicator flashes twice every 5 seconds, or flashes quickly repeatedly).

  6. Tap the touch sensor area 3 times (for the third time, keep touching until the indicator lights up)

    7. Release your finger after the indicator lights up.

    Initializing_R_A4T_New + Initializing_R_A4T_New

    Touch sensor area

    Release your finger after the indicator lights up.

    Touch and hold

    The indicator lights up for 5 seconds.

  7. Tap the touch sensor area twice while the indicator is lighting up

    8. The indicator will flash and then go out, and the power will be turned off.

    If you do not tap the touch sensor twice while the indicator is lit, start again from step 2.

  8. Insert the R earphone into the charging case

    9. Initializing_4_A4T

  9. Remove the earphones from the charging case and place them so that the L and R earphones are placed next to each other

    10. connecting_LR_1_A4T

    The L and R indicators light up and the power turns on.

    After a short while, the L indicator starts to flash quickly and repeatedly. The R indicator flashes twice every 5 seconds repeatedly.

    connecting_LR_2_A4T

Connecting to a Device

    Turn on the BLUETOOTH connection setting of the device and select “JVC HA-A4T”
    connecting_smp_1
    connecting_smp_2
    connecting_smp_3 + Device List JVC Nav

    JVC HA-A4T

    blue_flash_A4T

    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
    app_02

  2. Adjust the volume

    3. 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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