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Manufacturer
Model
What This Guide Helps With
Addresses self-test failures during power-on, focusing on battery status, pad connections, and external readiness conditions affecting device diagnostics.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Confirm the AED is not in active use. If needed, replace with a backup unit before troubleshooting.
Observe Indicator Status and Audible Alerts
- Check the Rescue Ready indicator and listen for beeps or voice prompts.
- Note any error messages or tones, as these help identify the failure source.
Verify Battery Installation and Type
- Open the battery compartment and confirm all batteries are installed correctly with proper polarity.
- Ensure approved batteries (ZOLL-recommended type) are being used.
- Avoid mixing old and new batteries.
- Improper battery setup is a common cause of self-test failure.
Replace All Batteries with New Set
- Install a full, fresh set of new batteries.
- Even if some appear good, partial depletion can fail the self-test.
- Power cycle the device after replacement.
- If the issue resolves, remove from troubleshooting.
Inspect Battery Contacts
- Check battery terminals for corrosion, debris, or bent/recessed contacts.
- Clean lightly if needed using appropriate method; poor contact can interrupt self-test.
Check Electrode (Pad) Connection
- Ensure pads are properly plugged into the device, seated firmly, and within expiration date.
- The AED performs readiness checks that include pad presence and integrity.
Inspect Pad Cable and Connector
- Look for frayed or damaged cables, loose or worn connectors, or broken locking tabs.
- Swap with a known-good pad set if available.
Confirm Pads Are Properly Stored
- Verify pads are placed correctly in the lid and not partially removed.
- Improper storage can trigger readiness or self-test errors.
Perform a Power Cycle
- Turn the unit off and back on after completing checks.
- Observe whether the self-test completes successfully.
Check for Environmental Factors
- Ensure the unit is not exposed to extreme temperatures or moisture/condensation.
- These can affect internal diagnostics during startup.
If the Problem Persists
If the self-test failure continues after verifying batteries, pads, and connections, common external causes have been ruled out.
The issue is likely internal (e.g., circuitry, internal diagnostics, or sensing components).
- Remove the device from service
- Label it Out of Service
- Send for repair or bench evaluation
Recognizing when to escalate is part of proper troubleshooting.
Clinical Use Tip
Never troubleshoot an AED intended for emergency response while it is assigned to active service. Always replace it with a ready unit before beginning evaluation.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"AED failed self-test on power-on and did not display ready status."
Cause
What was observed during troubleshooting.
Example:
"Depleted batteries and poor pad connection prevented successful self-test completion."
Resolution
What action was taken.
Example:
"Replaced all batteries and installed new electrode pads; device passed self-test and returned to service."
Helpful Details to Include (If Known)
- Rescue Ready indicator status (green/red)
- Audible beep pattern or voice prompts
- Battery type and replacement status
- Pad expiration date and condition
- Cable condition and connection integrity
- Environmental conditions at time of failure
- Final device status after testing
Final Thought
Self-test failures are often tied to readiness components like batteries and pads. A structured, external-first approach ensures patient safety while avoiding unnecessary repairs. Proper documentation supports reliability tracking and future troubleshooting.
That is successful troubleshooting.