Reset service timer for CM1860UV

i need too! please help.

How I reset the service timer for my CM1860: 
Turn off the cryostat, remove the glass cover, and unscrew the two rounded Allen bolts. These two bolts are in the cryo chamber covered by two black plastic covers. Then lift the entire top panel/cover similar to how you lift an engine hood of a car. The main board is under the control panel. Remove the button coin battery on the main board. Wait for a while and then put the battery back. Turn on the cryostat. Everything will be reset (clock, defrost time, section thickness, and of course, the service timer).