HiCatalin
I don't see a way to remote control your Beogram 6000 by a CD-Terminal Type 5005.
The Beogram 6000 (type 5502, 5505, 5511, 5515, there is no type 5512) has no control unit like the Beogram 4004. Even Beogram 4004 doesn't work with datalink codes, works only with beomaster 2400 (see the product page https://www.beoworld.org/prod_details.asp?pid=295 ). I don't know whether there exists a beogram with more or less the same mechanics than Beogram 6000 and electronics compatible with datalink codes. As a silver member you have acces to the service manuals on our site to have a look.
At my opinion it is not impossible to remote control a beogram 6000 but you would have to design and implement the electronics from scratch, which can be a long way.If you decide to go this way i suggest a datalink compatible approach so that you can remote control your BG by your phone or watch in the future...
Anyway Beogram 6000 is a nice and excellent record player, which makes fun even without remote control. Yesterday i just bought a BG6000 in the white edition i was looking for about ten years.
Best regards
David