No sound from both sides of the earphones

both_sides_sound_none

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

Insert the earphones into the charging case. Check that charging has started, and then remove from the charging case.

Select the state after checking

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Check the state of the earphones.
Remove the earphones from the charging case and check the status of the indicators.

The earphones are properly connected to the device.
Check the app settings and volume.

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

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Initializing the earphones and re-establishing the connection may help to 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.

Remove the earphones once if they are inserted into the charging case.

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

Start by initializing the L earphone.

  1. Insert the L earphone into the charging case

    2. charging_1_L_NP40T

    After a few seconds, the indicator on the L earphone and charging case will light up.

    charging_2_L_NP40T

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

  2. Remove the L earphone from the charging case, and place it back in again

    3. Initializing_1_NP40T
    charging_1_L_NP40T

  3. Touch and hold the touch sensor area on the L side of the earphones for about 10 seconds

    4. Initializing_L_NP40T + Initializing_L_NP40T

    Touch sensor area

    Release your finger after the L indicator flashes quickly.

    If the indicator does not flash, start over from step 1.

  4. Tap the touch sensor area twice

    5. The indicator will stop flashing after 5 seconds. Tap the touch sensor twice while it is flashing.

    After initialization is complete, the L indicator will flash twice.

    If initialization is not successful, start over from step 1.

Next, initialize the R earphone.

  1. Insert the R earphone into the charging case

    2. charging_1_R_NP40T

    After few seconds, the indicator on the charging case lights up.

  2. Remove the R earphone from the charging case, and place it back in again

    3. Initializing_2_NP40T
    charging_1_R_NP40T

  3. Touch and hold the touch sensor area on the R side of the earphones for about 10 seconds

    4. Initializing_R_NP40T + Initializing_R_NP40T

    Touch sensor area

    Release your finger after the R indicator flashes quickly.

    If the indicator does not flash, start over from step 4.

  4. Tap the touch sensor area twice

    5. The indicator will stop flashing after 5 seconds. Tap the touch sensor twice while it is flashing.

    After initialization is complete, the R indicator will flash twice.

    If initialization is not successful, start over from step 1.

Finally, connect the L earphone with the R earphone.

  1. Remove both earphones at the same time

    2. take_out_NP40T

    Be careful not to touch the touch sensor area when taking them out.

    Case_button_NP40T + SPNV_Case_button_NP40T

    Touch sensor area

    The indicator on both earphones lights up and the power turns on.

    After a short while, the indicator on one earphone will flash quickly and repeatedly and the indicator on the other earphone will flash twice slowly and repeatedly. The earphones are now ready for device pairing.

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

Connecting to a Device

    Turn on the BLUETOOTH connection setting of the device and select “JVC HA-NP40T”
    connecting_smp_1
    connecting_smp_2
    connecting_smp_3 + Device List JVC Nav

    JVC HA-NP40T

    blue_flash_NP40T

    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

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

The power is off if there is no light on the earphone.

Check whether the power of the earphones can be turned on.

Turn on the power of the earphones

Touch and hold the touch sensor of the earphone that is not lighted up for about 3 seconds.
PLAY_button_L_NP40T + SPNV_Button L_NP40T

Touch sensor area

The L side of the earphone is used in the illustration above.

The power of the earphones is on if the indicators on both earphones are flashing.

Select the state after checking

Return to the top of the page and re-select the pattern in which the indicators are flashing.

The charging case and earphones have run out of power.

Charge the earphones followed by reconnecting to check whether sound can be heard properly.

Charge the charging case and earphones

  1. Open the charging case

    2. Case_open_NP40T

  2. Rotate this unit to open the ear hook

    3. hook_open_NP40T

  3. Insert the earphones into the charging case

    4. charging_1_NP40T
    charging_2_NP40T

    After the earphones are inserted into the charging case, the power of the earphones will automatically turn off.

  4. Charge the charging case and earphones

    5. charging_2_No-PC_charge_NP40T + Charge_2_NP40T

    5V TYPE

    Indicators

    Keep the charging terminal clean.

    The indicator on the charging case starts flashing, indicating that charging has started.

    The indicators on the charging case flash while charging the charging case. When charging is complete, all indicators go out.

    The indicators on the earphones light up while charging the earphones. When charging is complete, the indicators go out.

    When charging the earphones or charging case that have not been used for a long period of time, it might take some time for the indicators to light up. Wait for the indicators to light up.

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

Connecting to a Device

  1. Remove both earphones at the same time

    2. take_out_NP40T

    Be careful not to touch the touch sensor area when taking them out.

    Case_button_NP40T + SPNV_Case_button_NP40T

    Touch sensor area

    The indicator on both earphones lights up and the power turns on.

    After a short while, the indicator on one earphone will flash quickly and repeatedly and the indicator on the other earphone will flash twice slowly and repeatedly. The earphones are now ready for device pairing.

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

  2. Turn on the BLUETOOTH connection setting of the device and select “JVC HA-NP40T”

    3. connecting_smp_1
    connecting_smp_2
    connecting_smp_3 + Device List JVC Nav

    JVC HA-NP40T

    blue_flash_NP40T

    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.

If there is no sound although the indicators are flashing, return to the top of the page and re-select the pattern in which the indicators are flashing.

The earphones may not have been properly charged.
Please check the following.

Unable to charge ＞＞

Initializing the earphones and re-establishing the connection may help to 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.

Remove the earphones once if they are inserted into the charging case.

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

Start by initializing the L earphone.

  1. Insert the L earphone into the charging case

    2. charging_1_L_NP40T

    After a few seconds, the indicator on the L earphone and charging case will light up.

    charging_2_L_NP40T

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

  2. Remove the L earphone from the charging case, and place it back in again

    3. Initializing_1_NP40T
    charging_1_L_NP40T

  3. Touch and hold the touch sensor area on the L side of the earphones for about 10 seconds

    4. Initializing_L_NP40T + Initializing_L_NP40T

    Touch sensor area

    Release your finger after the L indicator flashes quickly.

    If the indicator does not flash, start over from step 1.

  4. Tap the touch sensor area twice

    5. The indicator will stop flashing after 5 seconds. Tap the touch sensor twice while it is flashing.

    After initialization is complete, the L indicator will flash twice.

    If initialization is not successful, start over from step 1.

Next, initialize the R earphone.

  1. Insert the R earphone into the charging case

    2. charging_1_R_NP40T

    After few seconds, the indicator on the charging case lights up.

  2. Remove the R earphone from the charging case, and place it back in again

    3. Initializing_2_NP40T
    charging_1_R_NP40T

  3. Touch and hold the touch sensor area on the R side of the earphones for about 10 seconds

    4. Initializing_R_NP40T + Initializing_R_NP40T

    Touch sensor area

    Release your finger after the R indicator flashes quickly.

    If the indicator does not flash, start over from step 4.

  4. Tap the touch sensor area twice

    5. The indicator will stop flashing after 5 seconds. Tap the touch sensor twice while it is flashing.

    After initialization is complete, the R indicator will flash twice.

    If initialization is not successful, start over from step 1.

Finally, connect the L earphone with the R earphone.

  1. Remove both earphones at the same time

    2. take_out_NP40T

    Be careful not to touch the touch sensor area when taking them out.

    Case_button_NP40T + SPNV_Case_button_NP40T

    Touch sensor area

    The indicator on both earphones lights up and the power turns on.

    After a short while, the indicator on one earphone will flash quickly and repeatedly and the indicator on the other earphone will flash twice slowly and repeatedly. The earphones are now ready for device pairing.

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

Connecting to a Device

    Turn on the BLUETOOTH connection setting of the device and select “JVC HA-NP40T”
    connecting_smp_1
    connecting_smp_2
    connecting_smp_3 + Device List JVC Nav

    JVC HA-NP40T

    blue_flash_NP40T

    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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