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
Visual check the LED array
A visual check of the LED array can help identify any faulty LEDs. Here are the steps:
- Turn on the printer and run the Vat cleaning test.
- Place a few A4 papers on the LCD screen to make it easier to notice any faulty LEDs. The following images show the faulty LEDs as an example.
- Check the LED array for any flickering or LEDs not illuminating
DO NOT look directly at the UV light to prevent eye discomfort.
Reconnect the LED terminal block
Disconnect the power source before disassembling electrical equipment.
- Turn off the printer.
- Use an Allen Wrench (Size 2) to loosen the 12 screws and open the front case.
- Disconnect the USB cable and touch panel cable.
- Remove the front case.
- Use an Allen Wrench (Size 2) to loosen the number 1~8 screws and use an Allen Wrench (Size 5) to loosen the number 9 & 10 screws, then open the rear case and UV cover.
- Using the slotted screwdriver, reseat the LED cables on the mainboard.
- Using the slotted screwdriver, reseat the LED cables on the SSR board.
- Connect the touch panel cable.
- Plug in the power cord.
- Turn on the printer.
- Conduct the “Vat Cleaning” and check if the LED works correctly.
Wear the UV 400 safety goggles before the UV light lighting.
The above steps provide an easy way to check the LEDs on your device.