Shimadzu IonFocus Instruction Manual page 32

3 Preparation
2
Hold the knob 2 of the ground plate and then put the hook on the shank of
the knurled screw.
3
Check that the upper side of the groove in the ground plate is in contact with
the pin.
10
™
IonFocus Unit
Put the hook from the lower left of the knurled screw.