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What This Guide Helps With
Troubleshooting unresponsive controls or display problems caused by power, contamination, physical damage, or external operating conditions.
Step-by-Step Troubleshooting
1. Remove Unreliable Controls From Patient Use
Do not rely on an AutoPulse with an unreadable display, unreliable start control, or nonresponsive user panel during active resuscitation.
Provide manual CPR or another verified device.
Expected outcome: Patient support continues without dependence on questionable controls.
2. Identify the Exact Control Failure
Determine whether:
- The display is blank
- The display is partially visible
- The start button does not respond
- Another control is stuck or intermittent
- Controls work only after repeated presses
- The display freezes while the platform remains powered
Record the observed behavior.
Expected outcome: The problem is clearly distinguished from a total platform power failure.
3. Verify Platform Power
Install a known-good charged battery and confirm secure battery seating.
Observe whether the platform powers on normally and whether indicators or the display change.
Expected outcome: Stable power is confirmed. If the panel returns to normal with a known-good battery, evaluate the original battery separately.
4. Inspect the Control Panel
Look for:
- Cracks
- Impact damage
- Fluid residue
- Dried contamination
- Stuck buttons
- Separation of the panel surface
- Signs of cleaning-agent damage
Do not use pointed objects or excessive force on controls.
Expected outcome: The panel is intact and externally clean. Physical damage or evidence of fluid entry requires removal from service.
5. Clean Accessible Surfaces
If contamination is present, clean and dry the panel according to approved practices.
Allow the surface to dry fully before retesting.
Expected outcome: Controls operate freely and the display remains clear. If cleaning resolves a sticking control, continue to verification.
6. Check Operating Environment
If the failure followed storage, transport, temperature change, or moisture exposure, allow the device to stabilize in an appropriate environment before retesting.
Expected outcome: The display and controls operate normally after environmental stabilization. Persistent abnormal behavior requires service evaluation.
7. Test Each User Control
With the device off the patient and in a controlled setting, verify that each required accessible control responds consistently and only when intentionally activated.
Do not continue if a button activates intermittently or without deliberate input.
Expected outcome: All controls respond reliably and the display updates appropriately.
8. Verify the Display During Functional Operation
Perform an approved non-patient functional check and observe the display throughout startup and operation.
Expected outcome: The display remains readable, responsive, and stable. If so, troubleshooting can stop after required return-to-service testing.
9. Escalate Any Persistent Panel Failure
A control panel that is intermittent, damaged, unreadable, or unreliable must not be returned to service based on temporary recovery.
Expected outcome: The platform is labeled Out of Service and routed for qualified repair.
If the Problem Persists
External causes such as battery power, contamination, physical obstruction, and environmental exposure have been ruled out.
The remaining problem may involve display electronics, switches, control interfaces, internal connections, or another service-level failure. The platform should be:
- Removed from service
- Labeled Out of Service
- Sent for repair or bench evaluation
- Evaluated using appropriate ZOLL documentation and approved test equipment
- Repaired only by qualified personnel
Do not open the user-control assembly or perform board-level repair without authorized procedures.
Complete required functional and return-to-service testing following repair.
Knowing when to stop external troubleshooting is proper troubleshooting.
Clinical Use Tip
The start control and display must be consistently usable before the AutoPulse is considered ready for emergency deployment.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Staff reported that the AutoPulse start button intermittently failed to respond during a readiness check."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found dried contamination around the control surface was interfering with normal button movement."
Resolution
What action was taken.
Example:
"Cleaned the control area using approved procedures, verified consistent button response, and completed functional testing successfully."
Helpful Details to Include (If Known)
- Which button or display function failed
- Whether platform power was stable
- Visible contamination
- Evidence of fluid exposure
- Physical damage
- Response after cleaning
- Known-good battery result
- Whether the failure was intermittent
- Functional test result
- Final device status
Final Thought
Control and display reliability is essential for emergency equipment. Verify power and simple external causes first, but remove the AutoPulse from service when operator controls cannot be trusted consistently.
That is successful troubleshooting.