Brand: JVC
Category: Audio System
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for HA-NC120 -J
Uploaded: Nov. 21, 2025, 8:16 p.m.
Warranty Information
Refer to dealer for warranty information as it is not specified in the manual.
Safety Precautions: Do not use while driving, avoid high volume for extended periods, be aware of surroundings, do not disassemble, protect from moisture and extreme temperatures.
Battery Insertion: Slide off the battery cover on the right housing, insert the battery with correct polarity, then close the cover. Replace battery when indicator fades.
Using the Headphones: To activate noise-canceling, slide the power switch ON. The operation indicator will light up. Listen to audio sources even with the unit OFF, but noise-canceling will not function. Use the volume limiter for loud in-flight audio.
Cord Extension/Retraction: Gently pull the cord to extend. Stop when the end mark appears. Push the retract button to retract the cord.
Folding and Storing: Fold the headphones for compact storage.
Noise Canceling Function: This function cancels low-frequency noise (e.g., vehicles, air conditioners) and does not affect high-frequency noise.
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
|---|---|---|
| Sound distortion or loud noise | Low battery voltage | Replace the battery with a new one. |
| Noise-canceling function not effective or howling noise occurs | Headphones covered by an object | Remove the object covering the headphones. |