[Sonic LS+] Checking the Touch Panel

If you're experiencing issues with the touch panel on your Sonic LS+ printer—such as unresponsiveness or erratic behavior—don’t worry. This guide covers two simple steps to help you fix the problem:

1. Update the firmware to ensure compatibility and smooth operation.

2. Reconnect the touch panel cable in case the connection has become loose over time.

Updating the Firmware (Recommended First Step)

Outdated firmware can cause touch panel issues such as lag, freezing, or unresponsiveness. Updating to the latest firmware ensures better stability and compatibility.

How to Check Your Current Firmware Version

1. On the printer’s touch panel, tap Info.

2. Select Printer Info.

3. The current firmware version will be displayed on the screen.

If your firmware is not up to date, follow the instructions provided on the download page to complete the update process.

Note: To avoid damaging the printer, please make sure to download and install the latest firmware version specific to your model. Installing incorrect firmware may render the printer unusable.

Reconnecting the Touch Panel Cable

A loose cable can cause connection issues. Follow these steps to reseat the touch panel cable.

Before You Begin

Tools Needed:  

• 2 mm allen wrench
• 2.5 mm allen wrench
• Vacuum suction handle (Recommended)

Power Down and Prepare

1. Turn off the printer and unplug the power cord.
2. Place the printer on a flat, stable surface.

Removing the Front Cover

1. Use a 2 mm allen wrench to remove the ①② M3x12 flat head screws.

2. Lay down the printer.

3. Use a 2.5 mm allen wrench to remove the ①② M3x6 socket head screws.

4. Flip the printer up right and use the vacuum suction handle to remove the front cover.

5. Disconnect the front ① USB extension cable and the ② touch panel cable from the mainboard.

6. Do not pull the ribbon cable directly. Flip the clip to unlock first.

7. Remove the front cover.

Reseat the Touch Panel Cable

1. Locate the touch panel cable and verify ①② both connection points.

2. Flip the connector clip upward to release; press down to lock after reinserting. 

Reinstall the Front Cover

1. Reconnect the ① USB extension cable and the ② touch panel cable to the mainboard.

2. Flip the locking clip open before inserting the ribbon cable, then press it back down to lock in place.

3. Align the front cover with the chassis and carefully position it into place.

4. Use a 2 mm allen wrench to fasten the ①② M3x12 flat head screws.

5. Use a 2.5 mm allen wrench to fasten the ①② M3x6 socket head screws at the bottom of the front cover.

6. Ensure all connections are secure and the front panel sits flush with the frame.

Need Help?

If you need any assistance, please feel free to reach out to Phrozen Dental Support or your authorized resellers. We are always happy to support you.