Hello and hy everyone....
Hope every one good and fine..

I have a plotter Hp Designjet T520.
I made the error video in this link...

Hp Designjet t520 - YouTube[/video][/VIDEO]

After the carriage stop the screen shows error..
" carriage jaam
The Print carriage cannot move.
Open the ink catridge door,clear any paper jam or obstructive, and press ok