Roland VersaCamm SP-540V Service Notes page 119

Loosen the 3 screws fixing the Head in order as shown
8
in the figure.
Loosen the screws fixing the Head for 1/2 turn.
If the screws are loosened too much,
adjustments could not be performed correctly.
4
Insert the 1.5 mm Hexagonal Wrench to the hole of the
9
HEAD CARRIAGE, then, turn the screw so that the lines
of each color in the test pattern will be straight.
*Reference*
Position of the printing moves 1 line by turning
the screw 3/4 turn.
- When the upper lines are the left side of the lower
lines, turn the screw CW.
- When the upper lines are the right side of the lower
lines, turn the screw CCW.
Adjustment
Screw
Hole for inserting
the Hexagonal
Wrench
4-22