FIRST MIRROR ALIGNMENT.
After ensuring that the laser light is properly aligned between the laser tube
and the first mirror, check the alignment between the first mirror and the
second mirror. First, use the directional arrows on the control panel to send
the second mirror to the back of the bed along the Y axis.
Once set, place a piece of tape on the frame of the second mirror. Do not
placeTape directly to the mirror. Repeat the previous step. If the laser is not
centered on the second mirror, the set screws of the first mirror need to be
adjusted therefore.