Mimaki UJV160 T.NOT READY error code

[MonoJoker]

Hi all, we have a major problem with our Mimaki UJV160 and was wondering if anyone had come across it before. On startup of the machine the display says:

UJB-160 start-up
ver 2.30

<LOCAL.*>T.NOT READY

and will go no further. Any attempt to perform nozzle check, etc results in an

ERROR 30

Error 30 from the operation manual is rather unhelpful:

"Operate this machine correctly"

Anyone got any ideas or suggestions we have rebooted a number of times, check the water tank, the heater, etc.

Thanks.