Yes i hope i don't get in trouble for this.. power OFF the copier.
hold down keys [0][8]
Power ON copier.
once ready, type in 251
if you want to permanently remove the warning(not recommended), set to 0
press enter, and hold down energy saver until it beeps 5 times, then release. the machine should shut down. power back on the copier and voila! no more pm sign! (just wait for the bill next time it breaks down!)