UCJV330 - Losing black nozzles mid print

[dinomaskot]

My UCJV330 starts losing black nozzles after couple of meters of printing and i get banding issues..
If i restart print, or do a soft clean everything goes back to normal..

Help please?

 

[Smoke_Jaguar]

When the cut-out happens, stop the print and cancel the job and quickly print a nozzle check.

 

[dinomaskot]

When the cut-out happens, stop the print and cancel the job and quickly print a nozzle check.

Did that.. Head 1 - random black nozzles gone