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What This Guide Helps With
This guide assists Clinical Engineering in troubleshooting situations where the Mindray TE Series ultrasound system touchscreen becomes unresponsive, intermittently responsive, or does not register touch input. Common symptoms include the screen not responding to taps, delayed response, or partial areas of the screen not working.
The guide focuses on basic external checks first, such as screen condition, system state, and peripheral controls, before considering internal hardware faults.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Confirm the ultrasound system is not connected to an active patient exam before troubleshooting.
- If the device is currently being used for imaging, transfer the patient to another functioning ultrasound system.
- This prevents interruptions in patient care and ensures troubleshooting can be performed safely.
Confirm the System is Not in an Active Patient Exam
- Ensure the ultrasound system is not actively scanning a patient.
- Some functions may restrict input during certain exam states.
- Exit the exam or return to the home screen before testing touchscreen responsiveness.
Inspect the Screen for Contamination or Fluid
- Check the touchscreen surface for gel, fluid, or debris.
- Ultrasound gel can interfere with capacitive touch detection.
- Clean the screen using an approved disinfectant wipe and a lint-free cloth, then test the touchscreen again.
Remove Gloves or Try a Different Type of Glove
- Some touchscreen technologies may not respond well to certain gloves.
- Test the touchscreen with bare hands or a different glove type to rule out a user-interface issue.
Test Physical Controls
- Attempt to navigate the system using alternative controls such as:
- Trackball
- Hard keys
- Keyboard (if equipped)
- If the system responds to physical controls but not to touch input, the issue is likely isolated to the touchscreen interface.
Restart the Ultrasound System
- Perform a controlled system restart.
- Temporary software glitches or interface driver errors can cause touchscreen lockups.
- Steps:
- Close any open exams
- Shut down the system using the proper shutdown procedure
- Wait 30–60 seconds
- Power the system back on
- After reboot, test the touchscreen again.
Check for Screen Calibration Issues
- If the touchscreen responds but selects incorrect areas, calibration may be misaligned.
- Access the system settings or service menu (if available to Clinical Engineering) and perform a touchscreen calibration if the option is provided.
Inspect External Connections (If Accessible)
- If safe and permitted, inspect visible external cables related to the display or touchscreen interface.
- Ensure there are no loose or damaged cables.
- Avoid removing panels or performing internal disassembly.
Check for Signs of Hardware Failure
- Look for signs that may indicate touchscreen hardware issues:
- Dead areas on the screen
- Screen flickering or partial display failure
- Cracked glass or visible impact damage
- Touch only working intermittently
- These symptoms may indicate touchscreen digitizer or display assembly failure.
If the Problem Persists
If the touchscreen remains unresponsive after cleaning, restarting, and verifying user interaction, common external causes have likely been ruled out.
At this point the issue is likely due to an internal touchscreen digitizer, controller board, or display interface failure.
The device should be:
- Removed from service
- Labeled Out of Service
- Sent for vendor repair or Clinical Engineering bench evaluation
Avoid continued use if the interface cannot reliably control the system.
Clinical Use Tip
Do not attempt to troubleshoot touchscreen issues while the device is connected to an active patient exam. Always transfer the patient to another functioning ultrasound system before troubleshooting to prevent delays in patient care.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“Ultrasound touchscreen not responding. Unable to select menus or start exam.”
Cause
What was observed during troubleshooting.
Example:
“Touchscreen surface contaminated with ultrasound gel causing improper touch detection.”
Resolution
What action was taken.
Example:
“Cleaned screen with approved wipe, rebooted system, and verified touchscreen functionality returned to normal operation.”
“Removed device from service, labeled Out of Service, and scheduled vendor repair.”
Helpful Details to Include (If Known)
- Outlet power verified
- System reboot performed
- Touchscreen cleaned
- Physical controls tested (trackball/keys)
- Calibration attempted (if available)
- Screen condition inspected
- Final device status documented
Final Thought
Effective troubleshooting begins with simple external checks before assuming hardware failure. Cleaning the touchscreen, verifying system state, and performing a restart can resolve many interface issues quickly. When these steps do not correct the problem, removing the device from service and escalating for repair protects both patient safety and equipment reliability. Clear documentation ensures the next technician understands what has already been verified.
That is successful troubleshooting.