The blue "gun" seems to be moving to the left.... How do I get it back in line?
The red and blue guns of a CRT projector have mounting screws which when
loosened allow the two outer guns to swing left/right. The central green gun
usually isn't adjustable left/right (another reason to be very accurate when
mounting the projector) Up/down mechanical aim is accomplished by altering
projector tilt.
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