[Lumii DLP] Checking the Touch Panel

If you're experiencing issues with the touch panel on your Lumii 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Outdated firmware can cause touch panel issues such as lag, freezing, or unresponsiveness.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 steps below.

Download and Prepare the Firmware

1. Download the latest firmware for Lumii here.
2. Follow the instructions provided on the download page to complete the update process.

Reconnecting the Touch Panel Cable

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

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 and Back Case

1. Use the 2 mm allen wrench to remove the screws on the side of the printer securing the front and back case.
   
   
2. Then use the 5 mm allen wrench to remove the screws on top of the printer.
   
3. Carefully remove both cases.
4. After removing the cases, the printer should look like this:
   

Note: Please open the front case of the printer slowly to avoid damaging the touch panel cable.

Reseat the Touch Panel Cable

1. Locate the touch panel cable connecting the touch panel, flip the cable clip and gently reinsert the cable fully, ensuring proper alignment. Lock the clips securely in place.
2. Locate the touch panel cable on the other end connecting the mainboard, flip the cable clip and gently reinsert the cable fully, ensuring proper alignment. Lock the clips securely in place.

Reassemble the Printer

1. Once confirming the functionality. Carefully reinstall the front and back cases.
2. Before closing the case, make sure both the touch panel ribbon cable and USB extension cable are routed through the Round Support Column.
   
3. Tighten all screws using the 2 mm and 5 mm Allen wrenches.
4. Plug in the power cord and turn on the printer.
5. Check if the touch panel is working normally.