Yamaha 02R Installation Manual page 14

Audio-Service
After finishing the upgrade please check that everything is propper
connected, no loose screws, all screws are tighend.
Carefully close the 02R Topcover, do not assemble the 02R, only
the Topcover has to be closed! Switch on the 02R and check that
the Faders are working. Switch the 02R off.
performing Fader calibration: Switching the Power on while holding
down the St. Fader Sel key and the right cursor key will bring the 02R in
Test Program, select Fader Test (Test 9) . Perform the calibration
and the Fader Moving Time then assemble the 02R. You should
see right beside the Fader Moving Time : OK
Finished!!