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Applies To: Software version 3.2.7 or later
Last Updated: May 1, 2025

Symptoms:

  • Device boots normally, then fails imaging calibration.
  • Error code 221-B appears in lower right diagnostic window.
Cause:
  • Improper grounding or environmental vibration.
  • Software patch not applied post-installation.
Resolution Steps:
  1. Confirm firmware version is ≥3.2.7.
  2. Verify table is level; check vibration isolation pads.
  3. Navigate to Service Menu > Diagnostics > Imaging Calibration.
  4. If problem persists, escalate to Field Service for onsite check.
Escalation Path:
  • Create a Field Service Work Order
  • Service Task Type: Maestro2 Imaging Diagnostics
  • Priority: High if affecting more than 3 patients per day
Keywords: boot issue, imaging module, error 221-B, calibration failed, calibration failure, maestro2 oct a calibration failure, maestro2, error code 221