nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqqufm7fwtztwnq9gev55m2aveuw5qlu7qz53dm6ymmzshsxv7auqs2wddzx (nprofile…ddzx) 9VDC center negative. I scanned the manual and uploaded it to IA too in case you need it.
https://archive.org/details/panasonic-rk-p-400-c-manual/page/n5/mode/2up