Have and love a Bernina 1630 - computerized. An oldie goldie. Before it came into my hands it sat in a box, in a friend's sewing room, unused, for at least 4 years. It had belonged to a Canadian quilter who left it when she went home.
Before I bought it we plugged it in and checked to see its status. I wanted to do some embroidery on a quilt and so checked to see that the computer and file storage was functional. It turned on immediately and sewed well. Took it to a Bernina dealer for a once over and the best they could do was lube and clean it for me. Their tech did not know anything about that model and didn't have the service book for it. Of two minds about that but the machine wasn't damaged by someone making stuff up as they went, etc. just know that with an older machine that can be an issue.
The bottom line of that sad story is to tell you that the machine got back from the dealer and permanently moved onto the left side of my sewing center . She and I sew. She purrs and stitches perfectly.
Hope this helps.
Note: the 1630 has quite a number of the capabilities that the current top of the line machines have. HUGE, GARGANTUAN difference in price.