Odd, I would expect to see shaft com out with a 1401. Are you sure 1401 and 75 are your only active faults? Clear your fault log (turn E 2 to 1 then back to 0 cycle power) and see what else comes up in the list. Try changing a couple of parameters (like door dwell timer nudging timer ect) then cycle power. Check to see if they are retained upon power up. If they return to default you can expect to replace the cpu.
