How can i use the scaner in my epson stylus dx4000 series?

Fiend your solution direct from EPSON. Here is your solution...

http://www.epson.com/printer/prob676ijt65/solution

takio-29

It seems you need a manual. You could go to the Spanish Epson site http://www.epson.es/ and search for your model. Unfortunately this appears to be an European model; there does not seem to be an equivalent in the US, so a search of this model comes up blank. I cannot read Spanish, so I cannot help you with the Spanish Epson site. Most manufacturers now provide manuals as downloadable PDF's so, you should be able to find one on their site. Since you appear to know English, you could go to the UK site where the model and support documents are listed. This is the link: http://www.epson.co.uk/Printers-and-All-In-Ones/Inkjet/Epson-Stylus-DX4000-printer/Drivers-Support?supportLandingPage=true
Hope this helps.