Yamaha 02R Installation Manual page 10

5. Carefully push the Metalbar(Circuitboardholder) under the Switch
Circuit Board and move the Metallbar 90 degree down.
6. Now place the Metalbarscrews on the Faderchassis to fix the Bar, but do
not thighten this screws, because you need to adjust the Boardholder.
Place all the screws connecting the Switchboard and the Metalbar, don`t
thighten them!
7. Now thighten the Metallbarscrews on the Faderchassis, then thighten
the screws connecting the switchboard.