Error 63f ink tank remain Fuji 1600 LED

Hello! Happily printing along today with the Fujifilm LED 1600 hybrid printer and suddently it stops, showing Error 63 f Ink tnk remain, and it seems to be LC that's the issue. The LC has been a bit weak but otherwise nothing out of the ordinary. This happens randomly and causes the print to stop totally ruining the sheet. I can't find that error code in the manual, that's why I'm asking if somebody has had/seen this before. Thanks a lot and have a great day! =)

 

Thanks for the tip ProColorGraphics, I could try to order a new LC cartridge and change. I've not seen the error on ny other channel. I also think the pump might be on its last leg since it sometimes has problems with ink starvation (or so I think) but that seems to get better as you print more. I also sometime get subtank low on black when starting up but that's easily corrected with subtank maintenance.
Is there an easy way to check the pump? Or do you happen to have/know where to get a service manual? I don't have one yet but it could come in handy if I'm going to change the pump...

 

Thank you AlsEU, very informative! I did the subtank maintenance for LC this morning and did not get the error again. Sorry for dumb question but how do I do the sending adjust procedure? Is it through a software on the RIP PC or on the machine? Never done this either though I probably should, it seems as I need to get the service manual now...