Heidelberg sm 102 perfector issue

Hi i have a 4 color SM 102 perfector. I’m trying to put my press in perfect I’m getting Assignment of reversing/storage drum error and the press is now locked out. I’m unable to move the press unless i release the motor brake. I know i have to manually put the press in position but I’m unclear on how to go about it due to the fact i have not run this press in many years.

 

Model year?

 

SM 1o2 4 p3, 1998

Serial number- 541214