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Manufacturer
Model
What This Guide Helps With
Battery charging faults, reduced runtime, poor charge retention, docking power issues, or mobile X-ray shutdowns during normal use.
Step-by-Step Troubleshooting
Ensure Patient Safety First
Remove the MOBILETT Mira from patient use if the battery charge is low, runtime is unreliable, or the system may shut down during imaging.
Action:
- Use another mobile X-ray system if patient imaging is urgent.
- Do not attempt troubleshooting while the system is positioned for an active patient exam.
- Move the unit to a safe service area if possible.
Expected outcome: Patient imaging is not dependent on a mobile X-ray system with questionable power reliability.
Why it matters: A mobile X-ray system that loses power during positioning, exposure preparation, or image handling can delay care and create safety risks.
Verify the Reported Battery Problem
Confirm the exact complaint before assuming battery failure.
Action:
Ask clinical staff what was observed:
- Unit would not charge
- Unit showed low battery after charging
- Runtime was shorter than expected
- System powered off during use
- Charging indicator did not appear
- Battery fault message appeared
- Unit only works while plugged in
Expected outcome: The battery issue is clearly defined and repeatable.
If the issue is only a user perception problem, such as the unit not being left connected long enough to charge, educate the user and stop.
Check AC Power at the Wall Outlet
Verify that the charging source is good.
Action:
- Plug the MOBILETT Mira into a known-good hospital-grade outlet.
- Check whether the outlet is controlled by a wall switch, emergency power circuit, or power strip.
- Test the outlet with an outlet tester or another known-good device if appropriate.
Expected outcome: The outlet supplies stable AC power.
If the outlet is dead or unreliable, move the unit to a working outlet, notify Facilities if needed, document the outlet issue, and stop.
Inspect the Power Cord and Plug
Check for external charging path problems.
Action:
- Inspect the AC power cord for cuts, crushed insulation, bent blades, loose strain relief, or signs of overheating.
- Confirm the plug seats firmly into the wall outlet and the system power inlet.
- Check for looseness at the unit-side connection.
Expected outcome: The power cord and plug are intact and secure.
If the cord is damaged, remove the unit from service until the cord is replaced or evaluated. Do not continue charging with a damaged cord.
Confirm Charging Indicator Behavior
Observe whether the system recognizes AC power.
Action:
- Connect the unit to AC power.
- Look for charging indicators, power LEDs, screen messages, or battery status changes.
- Allow the system several minutes to detect AC power and begin charging.
Expected outcome: The system shows that AC power is connected and charging is active.
If there is no AC recognition, continue checking the external charging path before suspecting internal charger failure.
Verify System Power Mode and Shutdown Behavior
Confirm whether the problem is charging-related or startup/runtime-related.
Action:
- With the unit connected to AC power, power the system on.
- Observe whether it boots normally.
- Disconnect AC only when safe and observe whether the system remains powered by battery.
Expected outcome: The unit operates normally on AC and remains stable on battery.
If the unit only works on AC power and immediately shuts down on battery, suspect depleted, failed, disconnected, or end-of-life battery condition after external checks are complete.
Allow Adequate Charge Time
Rule out a deeply discharged battery.
Action:
- Leave the unit connected to a known-good outlet for an appropriate charging period.
- Avoid repeatedly powering the system on and off during recovery charging.
- Recheck the battery status after charging.
Expected outcome: Battery percentage or runtime estimate improves.
If the battery does not recover after adequate charging time, continue troubleshooting.
Check for Heavy Use or Workflow-Related Runtime Loss
Determine whether the runtime complaint matches usage conditions.
Action:
- Ask whether the unit was used continuously, left unplugged overnight, driven long distances, or used for repeated exposures without charging.
- Check whether the unit is normally parked near a working outlet.
Expected outcome: Runtime concern is separated from normal battery drain.
If the issue is caused by workflow, educate the area to keep the system plugged in when parked and stop.
Inspect for External Damage or Environmental Concerns
Look for signs that the power or battery system may be unsafe.
Action:
- Check for unusual heat, burning smell, fluid leakage, damaged covers, swollen battery access panels, impact damage, or abnormal fan noise.
Expected outcome: No signs of overheating, battery damage, or electrical hazard are present.
If heat, smell, leakage, smoke, or visible battery damage is found, unplug the unit if safe, remove it from service, label it Out of Service, and escalate immediately.
Restart the System Safely
Clear a possible temporary charging status or software reporting issue.
Action:
- Power down the system normally.
- Leave it connected to AC power.
- Restart the unit and recheck battery status and charging indication.
Expected outcome: Battery status and charging indication return to normal.
If the charging fault clears and runtime is normal after charging, document the finding and return the unit to service after normal safety checks.
Check for Battery Status Messages or Error Codes
Record any system messages before escalation.
Action:
- Look for battery, charger, power supply, or charging-related messages on the display.
- Document the exact wording, error code, when it appears, and whether the unit is on AC power or battery.
Expected outcome: Any fault information is captured accurately for repair follow-up.
If a battery or charging fault remains active after external checks, remove the unit from service.
Perform a Controlled Runtime Check if Safe
Only perform this if the system is not needed for patient care and the battery is not showing unsafe symptoms.
Action:
- Fully charge the unit if possible.
- Operate the system in a controlled service area.
- Monitor how quickly the battery level drops.
- Do not perform unnecessary exposures unless your facility procedure allows it and proper radiation safety controls are in place.
Expected outcome: Battery runtime is consistent with expected use.
If runtime is clearly poor, drops suddenly, or the unit shuts down unexpectedly, remove the unit from service and escalate for battery/charger evaluation.
If the Problem Persists
If the MOBILETT Mira still will not charge, shows a charging fault, shuts down on battery, or has poor runtime after outlet, cord, AC recognition, workflow, and basic restart checks, common external causes have been ruled out.
The device should be:
- Removed from service
- Labeled Out of Service
- Sent for repair or bench evaluation
Likely internal causes may include degraded batteries, battery communication failure, charger failure, power supply issue, internal wiring fault, or power management board failure.
Knowing when to stop is proper troubleshooting. Do not perform deep internal disassembly or battery replacement unless trained, authorized, and following approved service procedures.
Clinical Use Tip
Do not troubleshoot battery or charging issues while the mobile X-ray system is being used for an active patient exam. Move the patient imaging request to another available unit first. A mobile X-ray system with unreliable runtime should not be trusted for transport, bedside imaging, or emergency imaging workflows.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Clinical staff reported the Siemens MOBILETT Mira would not hold a charge and powered down during portable imaging rounds."
Cause
What was observed during troubleshooting.
Example:
"Verified known-good outlet and power cord, but the unit showed poor battery recovery and reduced runtime after charging."
Resolution
What action was taken.
Example:
"Removed the MOBILETT Mira from service, labeled it Out of Service, documented battery behavior, and sent the unit for bench evaluation of the battery and charging system."
Helpful Details to Include (If Known)
- Outlet tested and confirmed good
- Power cord condition
- Charging indicator behavior
- Battery percentage before and after charging
- Whether unit operates on AC power
- Whether unit shuts down immediately on battery
- Any battery or charger fault messages
- Runtime estimate or observed runtime
- Unusual heat, smell, sound, or visible damage
- Whether issue occurred after long unplugged storage
- Final device status
Final Thought
Battery issues on a mobile X-ray system should be approached logically. Start with patient safety, then verify the outlet, power cord, charging indication, workflow, and reported symptoms before suspecting internal failure. If runtime remains unreliable or charging faults continue, removing the unit from service is the correct clinical engineering decision. Clear CCR documentation helps repair teams confirm the failure and reduces repeat troubleshooting.
That is successful troubleshooting.