e studio 55 error E55 EB5

[Harry]

Hy at all
My e studio 55 give error E55 but there is no Paper in duplex transport.So iv i remember for well this error is EB5 yes if i disconecet finisher it works!Please need ilumination of this error of this code (error time-out standby PTPR-L )Cant anderstand this
Thanks in advance

[Harry]

I risponse at my own post
The Problem was the finisher so at the high Stack sensor make a couple houres to find it out.
Thanks at all