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Problem: Fiber Source Not Moving

Manifestation:

  • GUI for fiber source stage reports error after attempt to calibrate.
  • Verify (Y) stage not in a limit and that the shaft and encoder were moving a fractional amount when commanded to calibrate.
  • Voltage checks at motor CPC connection reveal motor brake not receiving any voltage to release.
  • Inspection and cable tracing reveals brake wire loose at Galil controller.

Solution/Recovery:

  • Re-secure wire to proper location.

    {\bf Note:} 2017-12-02 online schematic drawing to be incorrect. Wire should be connected to pin 44 of A-D board on galil #2 despite what online schematic shows.

Cause:

  • (Brake) wire loose connection at Galil controller.

Associated Issues:

Change Log:

2017-12-02: First version.

This document last updated (UTC): Tuesday 04 March 2025