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What This Guide Helps With
Troubleshooting failed PM or electrical safety testing caused by setup, accessories, power cords, grounding, test equipment, physical damage, or service-level problems.
Step-by-Step Troubleshooting
1. Remove Failed Equipment From Clinical Availability
Do not return the Aplio i900 CV to patient use after a failed required preventive-maintenance or electrical safety test until the failure is understood and corrected. Clearly control the device's status during evaluation. Expected outcome: Equipment that has not met required verification remains unavailable for clinical use.
2. Confirm the Exact Test That Failed
Identify the PM inspection, functional check, or electrical safety measurement that did not meet the applicable requirement. Record the actual observed result and the requirement being applied from facility policy, manufacturer documentation, or the approved test procedure. Do not invent or substitute limits. Expected outcome: The failure is clearly defined and based on the correct approved requirement.
3. Verify the Test Setup and Test Equipment
Confirm that the approved test instrument is within its required calibration status, correctly configured, and connected according to the applicable procedure. Inspect test leads and adapters for damage or poor connection. Expected outcome: The failed result is not caused by incorrect test setup or defective test accessories.
4. Perform a Complete External Inspection
Inspect the system, power cord, plug, strain relief, accessible connectors, wheels or mechanical components, probe cables, and other applicable external parts for damage, contamination, missing hardware, or evidence of liquid intrusion. Expected outcome: External physical defects are identified before further electrical or functional testing.
5. Verify the Facility Power Source
When the failure could be influenced by the AC supply or grounding path, verify the test receptacle using approved equipment and facility procedures. Do not condemn the system based on measurements taken from an unverified source. Expected outcome: The electrical source used for testing is suitable for the approved procedure.
6. Check the Power Cord and Accessible Grounding Path
Inspect the equipment power cord and plug carefully. If the approved procedure permits, evaluate the cord and accessible protective grounding path using the appropriate test equipment. Replace only components authorized for field replacement. Expected outcome: An external cord or connection problem is identified and corrected, or the external grounding path is ruled out.
7. Remove Nonessential External Accessories and Retest When Appropriate
An externally connected accessory can affect some test results. Follow the approved PM or electrical safety procedure regarding which accessories should be connected. Retest using the required configuration rather than arbitrarily disconnecting components. Expected outcome: The result is confirmed under the correct test configuration.
8. Verify Functional PM Items Separately
If the failure concerns a functional PM item rather than electrical safety, inspect the relevant probe, control, display, connection, mobility feature, or external accessory and test it according to approved procedures. Keep inspection, testing, calibration, and repair distinct in the work documentation. Expected outcome: A correctable external defect is identified or the failure remains reproducible.
9. Repeat the Failed Test After Correction
After correcting a verified external cause, repeat the exact failed test using the approved procedure and test equipment. Do not consider the device repaired solely because the visible defect was corrected. Expected outcome: The previously failed test now meets the applicable documented requirement. If all remaining PM checks also pass, troubleshooting can stop.
10. Escalate Any Persistent Safety or PM Failure
If the test continues to fail after setup, source, cord, accessory, and external conditions have been verified, stop troubleshooting at the authorized level. Do not adjust internal power, grounding, leakage, calibration, or circuit components merely to obtain a passing result. Expected outcome: A suspected internal electrical, mechanical, calibration, or functional problem is referred for qualified service.
11. Complete Return-to-Service Testing and Documentation
After repair, repeat the required failed test and complete all applicable PM, functional, and electrical safety checks required by facility policy before releasing the system. Record actual results according to department procedures. Expected outcome: The Aplio i900 CV meets all applicable return-to-service requirements and its status is documented correctly.
If the Problem Persists
Common test-setup, test-equipment, AC source, power-cord, accessory, and externally visible causes have been ruled out. The remaining failure may involve an internal electrical safety condition, grounding path, power subsystem, mechanical defect, calibration issue, or other service-level problem.
Remove the device from service, label it Out of Service, and send it for repair or bench evaluation. Evaluate the system with appropriate Canon documentation and approved calibrated test equipment. Internal repair or adjustment should be completed only by qualified personnel.
The device must pass the applicable failed test and all required return-to-service checks before clinical use. Knowing when a failed safety test requires escalation rather than repeated testing is proper troubleshooting.
Clinical Use Tip
A failed electrical safety or required PM result is a return-to-service issue, not a documentation exception; keep the system unavailable until the required verification passes.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"The Canon Aplio i900 CV failed an electrical safety check during scheduled preventive maintenance."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found physical damage to the detachable external power cord that affected the required electrical safety verification."
Resolution
What action was taken.
Example:
"Clinical Engineering replaced the damaged cord with an approved replacement, repeated the electrical safety and applicable functional tests successfully, documented the results, and returned the system to service."
Helpful Details to Include (If Known)
- Exact PM or electrical safety test that failed
- Actual measured or observed result
- Applicable documented requirement
- Test equipment identification and calibration status
- Test setup used
- Receptacle verification result
- Power cord and plug condition
- Accessories connected during testing
- Physical inspection findings
- Results before and after correction
- Final PM and electrical safety status
- Final device status
Final Thought
Keep failed equipment out of clinical use, verify the test setup and simple external causes before assuming internal failure, repeat the actual failed test after correction, escalate unresolved safety problems, and document objective results before return to service.
That is successful troubleshooting.