Manual for HA-FX39BT

Manual for HA-FX39BT

Brand: JVC

Category: Audio System

Document Type: Manual

Language: EN

Available Languages: EN , ES

Uploaded: Nov. 21, 2025, 9:26 p.m.

Warranty Information

The warranty information is not explicitly stated in this section of the manual.

1: CHARGING

When charging the headphones, be sure to use a USB to AC adapter with DC 5 V power output to avoid malfunction or abnormal heat generation.

  • The indicator lights up in red, and charging starts. When charging is complete, the indicator goes out.
  • When the remaining battery power is low, the alarm sounds every 2 minutes.
  • Operation is not possible while charging.

2: CONNECTING

When the power is off, hold the Power button down (for at least 7 seconds) until the indicator flashes alternately in red and blue.

  • Select "JVC HA-FX39BT" from the device list. The indicator flashes in blue when pairing is complete.
  • During the pairing process, the other device may require input of a PIN code. In such a case, enter "0000" as the PIN code for the System.

3: ON and OFF

  • ON: The indicator lights up in blue for 1 second. The indicator flashes slowly in blue when the unit is connected, and flashes slowly in red when the unit is not connected.
  • OFF: The indicator lights up in red for 1 second.

If no BLUETOOTH device is connected for about 6 minutes, the System automatically turns itself off.

When you turn on the unit for the first time after purchasing, the indicator flashes alternately in red and blue and pairing begins automatically.

4: MUSIC

  • Play/Pause: Press the Power button once.
  • Next Track: Press and hold the V+ button for 1 second.
  • Previous Track: Press and hold the V- button for 1 second.
  • Volume Up: Press V+.
  • Volume Down: Press V-.

5: PHONE

  • Answer/End Call: Press the Power button once.
  • Reject Call/Switch between Phone and Headphones: Press and hold the Power button for 1 second.

This unit cannot guarantee operation of all of the remote control functions depending on the device type.

OTHERS

Voice guidance

Squeeze the ear piece and insert it into your ear. When squeezing the pieces, be careful not to damage them.

The ear pieces may remain shrunk depending on the way they were mounted. Press the ear pieces softly to return them to their original shape.

The foam ear pieces will deteriorate over time with normal use and maintenance.

When the ear pieces get dirty, clean the surface with a damp cloth. Do not wash with water.

Troubleshooting and error codes

Problem Possible Cause Solution
System does not work correctly Battery depleted Charge the system to reset it.
Cannot connect to Bluetooth device Bluetooth is off on the device Turn on Bluetooth on your device.
No sound Volume is too low Increase the volume.
Incorrect audio output selected Ensure the headphones are selected as the audio output device.
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