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What This Guide Helps With
Troubleshoots unavailable alarm audio or alarm-limit control caused by volume settings, configuration, blocked speaker openings, controls, or monitor faults.
Step-by-Step Troubleshooting
1. Protect the Patient and Provide Reliable Alarm Surveillance
Do not leave a patient dependent on a monitor with unreliable alarm audio or unusable alarm settings. Move monitoring to another verified device or provide an approved alternate alarm-surveillance method.
Expected outcome: Clinically required alarms remain reliably available during troubleshooting.
2. Confirm the Alarm Complaint
Determine whether alarm audio is completely absent, unusually weak, distorted, intermittent, or whether alarm limits cannot be viewed or adjusted as expected.
Expected outcome: Audio-output problems are separated from alarm-setting or configuration problems.
3. Verify Monitor Power and General Operation
Confirm the Avalon FM20 is operating normally and that the display, parameter monitoring, and user controls remain responsive.
Expected outcome: The issue is isolated primarily to alarm operation.
4. Inspect the Speaker Area and Controls
Check accessible speaker openings and control surfaces for tape, labels, covers, contamination, liquid residue, or physical damage that could obstruct sound or controls.
Expected outcome: The speaker area is unobstructed and the controls are physically usable.
5. Check Accessible Alarm Volume Settings
Review user-accessible alarm volume controls and ensure they are appropriate for the clinical environment and consistent with facility policy. Do not bypass protected minimum settings or safety controls.
Expected outcome: Alarm volume is configured appropriately and audible during testing.
6. Review Alarm-Limit Availability
Verify that the parameter is actively monitored and that alarm-limit controls are available under the approved clinical configuration. Confirm that an apparent inability to set limits is not caused by a disabled parameter, profile, or locked configuration.
Expected outcome: Appropriate alarm-limit controls are available where expected.
7. Test Alarm Audio
Using an approved functional test, simulator, or controlled alarm condition off-patient, verify that alarm tones are produced clearly and consistently.
Expected outcome: Alarm audio is readily audible and stable. If normal after correcting an external obstruction or setting, proceed to final verification.
8. Compare With a Similar Verified Monitor
When useful, compare the affected monitor's alarm loudness and available alarm-setting behavior with another correctly configured Avalon FM20 or facility reference device.
Expected outcome: Abnormal behavior can be distinguished from expected configuration or normal operation.
9. Perform Complete Alarm Verification
Verify applicable high- and low-priority alarm indications, audible output, visual annunciation, alarm-limit controls, silence or acknowledgment controls, and normal parameter monitoring using approved methods.
Expected outcome: Alarm functions operate correctly and consistently. If successful, troubleshooting can stop.
10. Remove From Service if Alarm Reliability Is Uncertain
If alarm audio remains weak, missing, distorted, intermittent, or required limits remain unavailable without an approved configuration explanation, remove the monitor from service.
Expected outcome: Equipment with unreliable alarms is labeled Out of Service and referred for evaluation.
If the Problem Persists
Speaker obstruction, accessible volume controls, alarm configuration, and basic controls have been checked. Remaining causes may include the speaker assembly, user-interface hardware, configuration, software, or internal alarm circuitry.
Remove the device from service, label it Out of Service, and send it for repair or bench evaluation using appropriate Philips documentation and approved test equipment. Internal repairs and protected configuration changes should be performed only by qualified personnel.
Complete comprehensive alarm and monitoring verification before return to service. Recognizing that unreliable alarm performance requires escalation is proper troubleshooting.
Clinical Use Tip
Never substitute visual observation alone for required audible alarm surveillance when the monitor's alarm speaker is unreliable.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Nursing reported that alarm tones from the Avalon FM20 were difficult to hear despite normal parameter display."
Cause
What was observed during troubleshooting.
Example:
"Clinical Engineering found the external speaker opening was partially blocked by adhesive residue."
Resolution
What action was taken.
Example:
"Removed the obstruction, cleaned the accessible surface, and verified clear alarm audio, visual alarms, alarm controls, and normal monitoring."
Helpful Details to Include (If Known)
- Weak, absent, distorted, or intermittent alarm audio
- Alarm volume setting observed
- Speaker opening condition
- Alarm limits affected
- Configuration or profile observed
- Comparison-monitor result
- Visual alarm behavior
- Alarm test results
- Final device status
Final Thought
Alarm reliability is a patient-safety function, so external settings and obstructions should be checked first, followed by complete alarm verification and prompt escalation when uncertainty remains.
That is successful troubleshooting.