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What This Guide Helps With
This guide assists Clinical Engineering in troubleshooting situations where the Infinity Delta monitor battery is not charging, the unit does not stay powered when unplugged, or there are power/UPS-related failures. Symptoms may include low battery alarms, failure to charge, unexpected shutdowns, or no power-on condition. The focus is on verifying external power sources, connections, and battery conditions before assuming internal failure.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Do not troubleshoot while the device is in active patient use
- Transfer the patient to another functioning monitor before removing power or components
Verify AC Power Source
- Ensure the monitor is plugged into a known working hospital-grade outlet
- Test the outlet with another device if needed
- Confirm wall switch (if present) is ON
Check Power Cord and Connections
- Inspect the AC power cord for damage, bent prongs, or loose connections
- Reseat the cord at both the wall and monitor
- Try a known-good power cord
Confirm Power Indicator Lights
- Observe the monitor’s power/charging indicators
- Look for charging LED or battery icon behavior
- No indicator may suggest no AC input or internal PSU issue
Check Docking Station or Mount (if applicable)
- Ensure it is fully seated in the dock
- Inspect dock contacts for dirt, bent pins, or damage
- Try removing from dock and plugging directly into AC
Inspect Battery Condition
- Remove and reseat the battery (if accessible)
- Check for swelling, leakage, or damage
- Verify battery age if known
Perform a Power Cycle
- Disconnect AC power
- Remove battery (if possible)
- Wait 30–60 seconds
- Reconnect and power on
Test with a Known-Good Battery
- If available, install a known-good battery
- If the new battery charges → original battery is faulty
- If not → likely charging circuit or power supply issue
Check for UPS / Internal Power Alarms
- Review any alarms related to internal battery failure
- Review UPS/power supply fault messages
Verify Operation on AC Only
- Remove the battery and attempt to run on AC power alone
- If unit does not power on → possible internal power supply failure
- If it runs normally → issue likely isolated to battery system
If the Problem Persists
If all external power sources, cables, docking connections, and battery checks have been verified, the issue is likely internal (battery charging circuit, internal power supply, or UPS components).
At this point:
- Remove the device from service
- Label it Out of Service
- Send for repair or bench evaluation
Recognizing when the issue is beyond external troubleshooting is proper Clinical Engineering practice.
Clinical Use Tip
Do not troubleshoot power issues on a monitor connected to an active patient. Always transfer the patient to a properly functioning monitor before removing power or swapping batteries to avoid loss of monitoring.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“Monitor not charging battery and shuts down when unplugged from AC power.”
Cause
What was observed during troubleshooting.
Example:
“Battery failed to accept charge and did not hold power; verified with known-good battery test.”
Resolution
What action was taken.
Example:
“Replaced defective battery and confirmed proper charging and operation on battery power.”
Helpful Details to Include (If Known)
- Outlet tested and verified functional
- Power cord condition and swap performed
- Docking station used or bypassed
- Battery condition (swelling, age, physical damage)
- Indicator lights or charging icon behavior
- Alarm messages observed
- Test with known-good battery results
- Device operation on AC only
- Final device status
Final Thought
Power-related issues are often caused by simple external factors like cords, outlets, or worn batteries. A structured approach ensures these are ruled out before escalating. Prioritizing patient safety, minimizing downtime, and clearly documenting findings are essential parts of effective Clinical Engineering troubleshooting.
That is successful troubleshooting.