Ok, as opposed to the keyboard on A500, the one on A600 only consists of one big membrane with two contact points for each key. When a key is pressed, the contact points are shorted. Each key is an entry in a big matrix, and no logic is performed in the keyboard itself. The membrane continues into a flat cable with some sort of conducting compound at the end. The end then goes into a special flat-type molex-socket on the motherboard.
The length of the piece of cable having the compound applied, is a bit longer than the socket (to be on the safe side I guess). So by cutting a little piece of the end with a normal pair of siccors, you get a fresh conducting piece to put into the socket.