I know this is an old question and I have searched hi and lo on this site and tried everything that was suggested. I have been working on this for months and I am tired. I have both the electrical and shop manual. I have torn into everything except rebuilding the engine and transmission. I am a retired diesel mechanic and know my way around vehicles.
The problem: not all the time, when I shut of the bike an icon, (direction arrow for cassette) will show <, turn the key on then off and the icon, (direction arrow for cassette, opposite) will come on < >. So, pretty much if you have had this problem and I have seen it written in your posts, every time I turn on the key and then off another, (different Icon will show). So after doing this several times any Icon that has to do with radio or cassette show up.
What I have done, I might have forgotten some things

My suggested repair because I am tired of chasing this and wanted your opinion is removing red/yellow wire to back up memory C1 and installing a switch between located in left pocket on dash. This wire would come from small plug attached to radio. This way when and if it happens I can just hit the switch momentarily and shut of the screen. I know I will lose my stations etc... but a small price to pay.
If you have any other suggestions they would be greatly appreciated!
Charlie