The printer is displaying the message: The UV LED panel is not detected.
Error name: Disconnected UV LED panel
Error code: #10321
This error is shown when the UV LED connection cannot be found.
To gain access to the connector on the A64 logic board you must remove the printer's cover. Open the eight M3x5b screws securing the cover (purple circles). Be careful to unplug the USB & power cable before removing the cover completely (orange square).
Check the UV LED cable connection to the UV LED assembly and to the Boost board. Make sure that both connectors are pushed all the way in.