📝 Event: 2026-11-22_stage_encoder_cable_replacement

📊 Report Overview

Event Metadata

Record Type
Maintenance Event

Reason / Suite
Problem

Service Provider
third_party

Instrument
scope-testx1

Maintenance Action

Reason Details:
Stage occasionally lost absolute position after long overnight screening jobs, causing run aborts in approximately 1 of 6 plates.

Action Details:
Replaced worn stage encoder ribbon cable and cable guide, rerouted harness to increase bend radius, and validated repeatability over 500 cycles.

Status After Fix:
IN_SERVICE

Additional Notes

No position loss observed during post-repair endurance test.

📄 Raw YAML Ledger

View 2026-11-22_stage_encoder_cable_replacement.yaml

schema_version: 1
record_type: maintenance_event

maintenance_id: "maint_scope-testx1_20261122_stage_encoder_cable_replacement"
microscope: "scope-testx1"

service_provider: "third_party"
company: "Precision Motion Nordic"
contact: "Service technician: Tomas Berg"
reference: "PMN-2026-7724"

started_utc: "2026-11-22T07:20:00Z"
ended_utc: "2026-11-22T13:50:00Z"

reason: "problem"
reason_details: >
  Stage occasionally lost absolute position after long overnight screening jobs,
  causing run aborts in approximately 1 of 6 plates.

action: "replace"
action_details: >
  Replaced worn stage encoder ribbon cable and cable guide,
  rerouted harness to increase bend radius, and validated repeatability over 500 cycles.

microscope_status_after: "in_service"
downtime_hours: 6.5

related_qc:
  - "qc_scope-testx1_20261121T1700Z_repeatability_v1"
  - "qc_scope-testx1_20261123T0820Z_repeatability_v1"

attachments:
  - "maintenance/events/scope-testx1/2026/attachments/2026-11-22_encoder_validation.pdf"

tags: ["stage", "encoder", "cable", "screening"]

followup: >
  Run one unattended mock plate every Friday for four weeks.
next_due_date: "2026-12-20"

notes: >
  No position loss observed during post-repair endurance test.