The printer displaying the message: UV LED voltages differ too much. The LED module might be faulty, please contact our support.
Error name: UV led voltage error
Error code: #10309
You can test the UV LED using the test pattern which is starting firmware 1.5.0 found under "Settings -> Calibration -> Display Test". If the pattern, seen through a phone/camera, is not consistent, the UV LED module must be replaced.
Please, perform the test and prepare results, as well as exporting a log file, before contacting カスタマーサポート.