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Manufacturer
Model
What This Guide Helps With
Monitor not powering on, shutting down unexpectedly, or battery not charging when connected to AC power.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- If the monitor is in use, transfer the patient to another functioning monitor before troubleshooting.
- Expected: Patient monitoring is maintained without interruption.
- Why it matters: Loss of power can result in loss of vital sign monitoring.
Verify AC Power Source
- Check the wall outlet using another device or outlet tester.
- Expected: Outlet provides consistent power.
- Why it matters: A dead or switched outlet is a common and easily missed cause.
Inspect Power Cord and Adapter
- Ensure the AC power cord is fully seated at both the wall and monitor.
- Check for damage, fraying, or bent pins.
- Expected: Secure, undamaged connection.
- Why it matters: Loose or damaged cords prevent charging and operation.
Check Power Indicator Lights
- Observe the monitor’s AC power indicator and battery charging status on the display.
- Expected: AC indicator is lit and battery icon shows charging.
- Why it matters: Confirms whether the unit recognizes external power.
Attempt Power-On with AC Only
- Remove or disconnect the battery (if externally accessible) and power the unit using AC only.
- Expected: Monitor powers on with AC power.
- Why it matters: Helps isolate whether the issue is battery-related or system-level.
Check Battery Seating and Contacts
- If accessible, remove and reseat the battery. Inspect for:
- Dirty or corroded contacts
- Improper seating
- Expected: Battery sits securely with clean contacts.
- Why it matters: Poor contact prevents charging and power transfer.
Swap with Known Good Battery (If Available)
- Install a known good battery from another unit.
- Expected: Unit powers on and battery charges normally.
- Why it matters: Confirms whether the original battery has failed.
Swap Power Cord or Adapter (If Available)
- Test with a known working power cord or external power supply.
- Expected: Charging resumes or monitor powers on.
- Why it matters: Rules out external power accessory failure.
Check for Intermittent Power Loss
- Gently move the power cord at the connector while observing power status.
- Expected: No fluctuation in power status.
- Why it matters: Identifies loose internal DC jack or connector issues.
If the Problem Persists
If all external power sources, cords, and battery checks have been completed and the issue remains, the problem is likely internal (power supply board, charging circuit, or internal connectors).
Remove the device from service, label it Out of Service, and send for repair or bench evaluation.
Clinical Use Tip
Do not troubleshoot power issues on a monitor actively connected to a patient. Always transition to a backup monitor before removing power sources or batteries.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Monitor not powering on and battery not charging when plugged in."
Cause
What was observed during troubleshooting.
Example:
"Failed battery identified after testing with known good battery."
Resolution
What action was taken.
Example:
"Replaced battery and verified proper charging and operation."
Helpful Details to Include (If Known)
- Outlet tested and verified
- Power cord condition checked/swapped
- Battery swapped or reseated
- Power indicator behavior observed
- Any intermittent power loss noted
- Final device status (working / sent for repair)
Final Thought
Power-related issues should always be approached from the outside in. Start with the simplest causes—power source, cords, and battery—before considering internal failure. Patient safety comes first, and clear documentation ensures continuity of care and efficient repairs.
That is successful troubleshooting.