The easiest way of connecting the CDTV keyboard to an A4000 or an A1200T is the following:
- Break the plastic pin from CDTV's PS2 plug (since it's kinda lower than the standard PS2 plugs
- Open the CDTV keyboard and locate the connector which the cable ends
- Unplug the plug from the connector and swith the leads "1 with 4" and "2 with 3" (To do so you need to slightly pull the plastic thing that holds every lead and easily it gets out)
- Plug the connector again and close the CDTV keyboard.
- Voila! It works like a charm in my DBox /w PCkey1200 (with the appropriate 5din to PS2 adapter