Hello,

I know this question have been asked before but the person did not really get any solution so I will try again.
I also know that people dont really like the Riso V800 in here because of difficulties in repair but I got two machines with 12 drums for free so I could not say no.
The thing is that about five of the drums are in bad shape. One of them(yellow) is giving the errorcode t48-558 when I put it in the machine.
In my tech manual it says "1st inner pressure error (when the print drive is released)" but I cant figure out what to do?

Do you guys have any suggestions?

Thanks again for all the great help I find in these forums.