https://twetch.app/t/415a9cb20e4fbbe311d68b3252db0716878f77…

https://twetch.app/t/415a9cb20e4fbbe311d68b3252db0716878f77f1f085c231a3dce5dd192d7ebb Although not meant for regular users, the maintenance manual described a keyboard sequence to switch the 5100 into a maintenance mode.