Brand: JVC
Category: Camcorder
Document Type: Manual
Language: EN
Manual for GZ-HM340
Uploaded: Aug. 10, 2025, 12:35 a.m.
Beginner's Guide:
- Charging: Charge the battery pack using the AC adapter.
- Recording: Select video mode and press the record button to start/stop.
- Playback: Use the playback mode to review recorded videos and images.
- Shooting Tips: Learn basic techniques like holding the camcorder for stable shots, panning, and shooting in various conditions (holiday, wedding, travel, amusement park).
Getting Started:
- Verify accessories, attach the battery pack, adjust the grip, and insert an SD card.
- Set the date and time, and adjust settings like daylight saving time and area settings for accurate recording.
Troubleshooting and error codes
| Category | Issue/Message | Solution |
|---|---|---|
| Battery Pack | Unable to turn on the power when using the battery pack. | Recharge the battery pack. Ensure terminals are clean. Use JVC battery packs. |
| Short usage time even after charging. | Battery deterioration may occur. Replace with a new battery pack. | |
| Unable to charge the battery pack. | Ensure the battery is fully charged (lamp off). Check terminals. Use an original battery pack. | |
| The remaining battery display is not correct. | Check when AC adapter is connected. Avoid extreme temperatures or frequent charging. | |
| Recording/snapshot cannot be performed. | Check START/STOP switch and recording mode. | |
| Recording stops automatically. | Unit may stop automatically to protect the circuit due to temperature. Turn off, wait, then restart. Use an SD card if built-in memory has issues. | |
| Card | Cannot insert the SD card. | Ensure correct insertion direction. |
| Unable to copy to SD card. | Perform media settings. Format the card if it was used on other devices. | |
| Memory Card Error! | Turn off, remove/re-insert card. Clean terminals. Back up files and format the card. | |
| Not Formatted | Select OK and then YES to format. | |
| Recording Failure | Remove/re-insert SD card, clean terminals. Insert before powering on. Avoid impacts. | |
| Screen/Image | LCD monitor is difficult to see. | Avoid bright areas. |
| A band or a ball of bright light appears on the LCD monitor. | Change unit direction to avoid light source. Not a malfunction. | |
| The recorded subject is too dark. | Use backlight compensation, GAIN UP, NIGHT EYE, or adjust brightness. | |
| Playback | Sound or video is interrupted. | Interruption at scene connection is normal. |
| Cannot find a recorded file. | Cancel group display/date search. Check media settings. Use "PLAYBACK OTHER FILE" for damaged files. | |
| No date/time display. | Set "ON-SCREEN DISPLAY" and "DISPLAY ON TV" to ON. |