Beam Expander Low / High Faulty

Disclaimer: The procedures described herein should be performed only by or under the supervision of specialized technicians. LaserStar is not responsible for damage to parts, equipment, or persons attempting to perform any of these procedures without proper supervision or technical assistance, proper tools, or safety measures necessary for laser, high- and low-voltage handling.

A “Beam Expander Low/High” fault means the beam expander did not activate its limit sensor during the homing procedure, which occurs at startup or when it receives a move command.

This issue may stem from:

1. An inadequate connection at the ribbon cable on the beam expander PCB or the main control board;

2. Obstructed movement or mechanical binding of the beam expander;

3. A defective beam expander PCB;

4. A malfunctioning connector on the ribbon cable.

The recommended subsequent actions to address this fault are as follows:

1. Ensure all ribbon cable connectors on the beam expander PCB and the control board are securely seated; reseat if necessary. This step may resolve the issue.

PCB Beam Expander Connection

J2 Control Board Beam Expander Connection

2. If you have one on hand, replace the beam expander's ribbon cable with one known to be working correctly. If this resolves the issue, the beam expander is likely defective; otherwise, you'll need to further examine the cable or control board.

To have a technician examine the control board, contact Service for assistance.

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