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What This Guide Helps With
Troubleshooting reflectance read errors, abnormal strip readings, optical faults, contamination, strip placement issues, or external conditions affecting AUTION ELEVEN AE-4022 results.
Step-by-Step Troubleshooting
Ensure Patient Safety First
Confirm the AUTION ELEVEN AE-4022 is not actively processing a patient urine strip before troubleshooting.
If patient testing is needed immediately, have laboratory staff use another validated analyzer or follow the approved downtime process.
Expected outcome: No patient result is reported from an analyzer with a possible optical or reflectance reading issue.
Stop Testing and Protect Result Integrity
Ask staff whether a patient strip was being read when the fault occurred.
Confirm whether the result completed, was flagged, rejected, or needs to be repeated according to laboratory policy.
Expected outcome: Questionable urine chemistry results are not released.
Verify the Reported Fault
Ask staff what they observed.
Check whether the issue involves:
- Reflectance or optical read error
- Abnormal or inconsistent chemistry results
- Failed strip reading
- Error during startup or self-check
- Failure only with one strip lot
- Failure after cleaning, maintenance, or reagent change
Expected outcome: The issue is confirmed as a reading or optical problem, not a printer, LIS, strip feed, or operator workflow issue.
Inspect the Strip Area for Contamination
Check the strip tray, strip guide, and reading area for urine residue, dried control material, dust, paper fibers, or reagent buildup.
Follow the facility-approved cleaning process for the accessible strip path and read area. Do not use excessive liquid or harsh cleaners.
Expected outcome: Any visible contamination is removed, and the optical path is not being affected by residue.
Check Strip Placement and Orientation
Confirm the reagent strip is placed correctly on the strip tray and is not tilted, curled, reversed, or misaligned.
Verify staff are using the correct strip type approved for the AE-4022.
Expected outcome: The analyzer can read the strip pads consistently without position-related errors.
Check Strip Condition and Storage
Inspect the reagent strip bottle for expiration date, open-date requirements, moisture exposure, discoloration, or damaged pads.
Confirm the cap is being closed promptly and strips are stored according to lab policy.
Expected outcome: Strip degradation or improper storage is ruled out before suspecting the analyzer.
Run a Known Good Strip or Control Material
Have lab staff run QC or a known acceptable test strip according to the laboratory’s approved procedure.
Compare whether the fault occurs again with properly handled materials.
Expected outcome: If the analyzer reads normally, the issue may have been related to strip handling, sample condition, or operator technique.
Check for Ambient Light or Environmental Issues
Confirm the analyzer is not placed in direct sunlight, under intense task lighting, near strong glare, or in an unstable environment.
Also check for vibration, condensation, unusual heat, or recent relocation.
Expected outcome: External environmental conditions are not interfering with reflectance measurement.
Verify the Strip Tray Moves Smoothly
Observe the strip tray during a test or allowed check cycle.
Look for hesitation, binding, incomplete travel, unusual noise, or strip movement during the reading process.
Expected outcome: The strip is being positioned correctly under the read area.
Power Cycle the Analyzer When Safe
Once all specimens are cleared and staff confirm testing can pause, power the analyzer off, wait briefly, and power it back on.
Allow the analyzer to complete startup checks.
Expected outcome: Temporary logic or sensor errors clear without returning.
Repeat QC After Cleaning and Restart
Have laboratory staff repeat QC or the facility-approved performance check.
Do not return the analyzer to patient use unless QC passes and the analyzer reads consistently.
Expected outcome: Analyzer performance is verified before patient testing resumes.
Check for Repeated or Patterned Failure
If the same optical or reflectance fault returns after cleaning, proper strips, correct placement, QC, and restart, document the pattern.
Note whether the error occurs at startup, during every strip read, intermittently, or only on specific pads.
Expected outcome: Common external causes have been ruled out and the failure pattern is ready for repair evaluation.
If the Problem Persists
If the AUTION ELEVEN AE-4022 continues to show optics, reflectance, or reading faults after cleaning, correct strip handling, QC verification, environmental checks, and restart, the issue is likely internal.
Remove the analyzer from service, label it Out of Service, and send it for repair or bench evaluation.
Knowing when to stop is proper troubleshooting. Continued testing on an analyzer with unresolved read faults can risk inaccurate urine chemistry results.
Clinical Use Tip
Do not troubleshoot optical or reflectance faults while the analyzer is processing active patient specimens. Move testing to another validated analyzer or downtime method first, then troubleshoot only when result integrity can be protected.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Laboratory staff reported the ARKRAY AUTION ELEVEN AE-4022 was producing a reflectance reading fault during urine strip testing."
Cause
What was observed during troubleshooting.
Example:
"Strip tray and read area were inspected; dried residue was found near the accessible strip path, and QC failed prior to cleaning."
Resolution
What action was taken.
Example:
"Cleaned accessible strip path per approved process, verified proper strip placement, restarted analyzer, and had lab repeat QC; analyzer passed QC and was returned to service."
Helpful Details to Include (If Known)
- Analyzer location and department
- Exact optical or reflectance error displayed
- Whether issue occurred during startup, QC, or patient testing
- Strip lot and expiration date
- Whether strips were stored properly
- Strip tray condition
- Contamination found in strip path
- Cleaning performed
- QC results before and after troubleshooting
- Any unusual noise during tray movement
- Any unusual heat, smell, glare, or environmental concern
- Final device status
Final Thought
Optical and reflectance faults should be approached carefully because they directly affect result reliability. Start with patient safety, then rule out strip condition, placement, contamination, environment, and tray movement before suspecting internal optical failure. Clear CCR documentation protects the patient, the lab, and the Clinical Engineering record.
That is successful troubleshooting.