[Sonic LS+] Checking the LED

If you notice that your printer’s LCD is dimming or not illuminating, it may be due to issues with the LEDs. This article will guide you through the process of checking your device's LED to check whether the LEDs are properly connected or have burned out.

Checking the LED Cable Connections

Tools Needed: 

• 2 mm allen wrench
• 2.5 mm allen wrench
• Vacuum suction handle (Recommended)
• Slot head screwdriver
• UV 400 safety goggles

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.

Reconnecting the LED Cables

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

1. Locate the LED connector on the mainboard.

2. Use a Slot head screwdriver to securely reconnect the LED cables.

3. Plug in the power cord and turn on the printer.

Conduct LCD Test

Mode 1: Light Up Entire LCD Screen

This is to make sure that the LCD screen lights up completely and that there are no black spots.

Mode 2: LCD Grid

This is to make sure the LCD is showing the correct pattern.

Mode 3: Blackened LCD Screen

This is to make sure that there are no light spots and that the LCD screen is capable of covering up the light.

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.