On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Addresses failed calibration or verification routines caused by setup, consumables, cleanliness, configuration, environmental, or service-level conditions.
Step-by-Step Troubleshooting
1. Protect Patient Testing and Staining Quality
Do not use a stainer for patient work when a required calibration, verification, or manufacturer-defined readiness procedure has failed.
Expected outcome: Patient slides are not processed on equipment with unresolved performance verification concerns.
2. Confirm What Procedure Actually Failed
Identify the exact calibration, verification, alignment, or quality procedure being reported. Record the displayed message and the point at which it stops.
Expected outcome: The failure is accurately identified rather than assuming every setup or QC problem is a calibration fault.
3. Confirm Required External Conditions
Verify that required racks, reagent stations, consumables, fluid connections, waste capacity, and other user-accessible prerequisites are present and correctly installed.
Expected outcome: The system has all required external resources to complete the procedure. If correcting a missing prerequisite allows successful completion, troubleshooting can stop after verification.
4. Inspect Accessible Components for Contamination or Obstruction
Look for staining residue, spilled reagent, labels, debris, or improperly seated containers in areas involved in the procedure. Clean only using approved methods.
Expected outcome: Accessible areas are clean and unobstructed.
5. Verify Reagent and Consumable Condition
Confirm applicable reagents and consumables are correct for the configured process and have not obviously been mixed, misplaced, contaminated, or depleted.
Expected outcome: Required external materials are appropriate and correctly positioned. If replacing an unsuitable external consumable restores the procedure, proceed to final verification.
6. Review User-Accessible Settings
Check that the intended staining program, reagent assignment, rack type, or other accessible workflow setting matches the procedure being performed. Do not enter restricted service menus.
Expected outcome: User-accessible configuration is consistent with the intended procedure.
7. Check Environmental Conditions
Verify stable placement, unobstructed ventilation, and absence of abnormal heat, liquid contamination, or recent environmental changes that could interfere with operation.
Expected outcome: No external environmental condition is contributing to the failure.
8. Repeat the Procedure Once Under Correct Conditions
After correcting any identified external condition, repeat the approved calibration or verification procedure using normal controls. Avoid repeated unsuccessful attempts that consume reagents or risk equipment damage.
Expected outcome: The procedure completes successfully without fault. If it does, proceed to final functional verification and stop troubleshooting.
9. Perform Final Functional Verification
Confirm the stainer reaches its normal ready state, correctly recognizes required racks and reagents, and no calibration-related warning returns.
Expected outcome: The system passes the applicable approved verification and is ready for clinical use.
10. Escalate Repeated Calibration Failure
If the procedure continues to fail with correct external setup, stop troubleshooting before internal adjustment, sensor alignment, or unauthorized configuration changes.
Expected outcome: The device is removed from service and sent for qualified evaluation.
If the Problem Persists
External setup, consumables, cleanliness, accessible settings, and environmental conditions have been ruled out. The remaining problem may involve sensing, positioning, control, software configuration, or another internal service-level condition.
Remove the stainer from service, label it Out of Service, and send it for repair or bench evaluation. Evaluation should follow appropriate manufacturer documentation using approved test equipment. Internal adjustments, repairs, or configuration changes should be completed only by qualified personnel.
Required calibration, verification, and functional checks must pass before return to service. Knowing when to stop external troubleshooting is proper troubleshooting.
Clinical Use Tip
A failed required calibration or verification is a stop condition; do not use appearance of normal operation as a substitute for successful verification.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Laboratory staff reported that the HistoCore SPECTRA ST would not complete an expected verification procedure."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found an externally accessible reagent container was improperly seated, preventing the procedure from completing normally."
Resolution
What action was taken.
Example:
"Clinical Engineering reseated the container, repeated the approved procedure successfully, confirmed normal system readiness, and returned the stainer to service."
Helpful Details to Include (If Known)
- Exact procedure that failed
- Exact displayed message
- Stage at which failure occurred
- Reagent and consumable condition
- Rack and station setup
- Accessible settings observed
- Evidence of contamination or obstruction
- Results of repeat testing
- Final verification result
- Final device status
Final Thought
Treat failed calibration or verification seriously, confirm all external prerequisites before suspecting internal failure, verify successful completion after correction, and escalate when the required procedure remains unsuccessful.
That is successful troubleshooting.