23. Step 23
There are three screws that can be tightened by hand on the mirror on the left of the gantry.
These three screws will change the location of the beam on the target. If the spot is high but
on center vertically tighten the bottom screw. If the spot is low but on center vertically
tighten the top two screws. If the spot is low and to the left, tighten the top right screw. If the
spot is low and to the right, tighten the top left screw. If the spot is high and to the right
tighten the top left and bottom screw. If the spot is high and to the left tighten the top right
and bottom screw. If the spot is on center horizontally but to the left, tighten the top right and
bottom screws. If the spot is to the right tighten the top left and bottom screws.
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