Omtech SH-G1390 User Manual page 98

6 Maintenance
6.4.3 2nd Mirror Alignment
• Wear safety goggles during the entire aligning process.
• Avoid attaching the tape directly to the mirror.
• Less than 15% of the maximum power (not Min.) should be sufficient to leave a
clear mark without setting the testing tape on fire.
• Always make sure the path is clear between the laser and its target. Never
allow foreign objects between the laser and its target. Always close the cover
before firing the laser. Do not look directly at the active laser through the
cover during this procedure.
After ensuring the laser is well aligned between 1st Mirror and 2nd Mirror, check the alignment
between the 2nd Mirror and 3rd mirror.
1. Use the direction arrows on the control panel to send 3rd mirror to the LEFT of the bed along
the X axis.
2. Place a piece of tape on 3rd mirror's frame. DO NOT place the tape directly onto the mirror.
3. Press Pulse to manually fire the laser and observe if the burnt hole is at the center of the tape
on 3rd mirror. If so, 2nd Mirror and 3rd mirror are aligned; if not, continue to step 4.
4. Adjust 2nd Mirror's set setscrews accordingly as in
5. Use the direction arrows on the control panel to send 3rd mirror to the RIGHT of the bed along
the X axis.
6. Repeat steps 3 and 4 until the beam is well aligned. Replace the tape when necessary.
7. Retighten the nuts on the setscrews.
§ 6.5.2 1st Mirror Alignment
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on Page 91.