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Asset Type
Manufacturer
Model
What This Guide Helps With
Unresponsive buttons, frozen screen, dim display, or incorrect input preventing normal operation or patient testing.
Step-by-Step Troubleshooting
Ensure Patient Safety
- Do not troubleshoot while the device is in use on a patient.
- Move testing to a known working meter.
Expected: No interruption to patient care
Why it matters: Prevents delays in glucose testing and incorrect results
Verify the Reported Issue
- Power on the device and attempt to use multiple buttons.
- Check for:
- No response to key presses
- Delayed or inconsistent response
- Frozen screen or partial display
Expected: Issue is reproducible
Why it matters: Confirms a true malfunction vs. user error
Check Battery Status
- Inspect battery level indicator on the screen.
- Replace batteries with known good ones
- Ensure proper battery orientation
Expected: Device powers on with stable display
Why it matters: Low or unstable power commonly causes display and keypad issues
Perform a Full Power Reset
- Remove batteries completely.
- Wait 30–60 seconds
- Reinstall batteries and power on
Expected: Device reboots normally and responds to input
Why it matters: Clears temporary system freezes or software glitches
Inspect Keypad for Physical Obstruction or Damage
- Check buttons for:
- Sticky residue (common with glucose exposure)
- Physical damage or wear
- Buttons stuck in pressed position
Expected: Buttons move freely and return properly
Why it matters: Contamination or wear can prevent proper electrical contact
Clean External Surfaces
- Using approved cleaning wipes:
- Clean keypad and screen surface
- Allow device to fully dry before testing again
Expected: Improved responsiveness if contamination was present
Why it matters: Residue buildup can interfere with button function
Check Display Visibility
- Inspect screen for:
- Cracks or internal damage
- Faded, dim, or missing segments
- Backlight failure
Expected: Display is clear and readable
Why it matters: Physical screen failure will not be resolved with basic troubleshooting
Test with Known Good Dock or Accessories (if applicable)
- If using docking station or connectivity base:
- Remove from dock and test independently
- Try a different dock if available
Expected: Device operates normally outside faulty accessories
Why it matters: External accessories can sometimes interfere with operation
Attempt Basic Function Navigation
- Try navigating menus or performing a control test (without patient sample).
Expected: Device responds correctly to inputs
Why it matters: Confirms whether the issue affects all functions or only specific inputs
If the Problem Persists
All common external causes have been ruled out. The issue is likely internal (keypad membrane failure, display failure, or internal board issue).
Remove the device from service.
Label it Out of Service.
Send for repair or replace per facility protocol.
Knowing when to stop is proper troubleshooting.
Clinical Use Tip
Never attempt to “work around” unresponsive buttons during patient testing. Always switch to a functioning meter to avoid incorrect entries or missed results.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Device display frozen and keypad not responding during glucose testing."
Cause
What was observed during troubleshooting.
Example:
"Internal keypad/display failure after external checks and battery replacement."
Resolution
What action was taken.
Example:
"Removed from service and sent for repair; replacement meter issued to unit."
Helpful Details to Include (If Known)
- Battery replaced and tested
- Power reset performed
- Keypad cleaned and inspected
- Display condition (dim, cracked, blank)
- Button response behavior
- Tested on and off dock
- Final device status (removed from service)
Final Thought
Display and keypad issues often appear complex but are frequently caused by simple power or contamination problems. Always start with external checks and prioritize patient safety. When functionality is inconsistent or unresponsive, escalation is the correct decision. Proper documentation ensures clear communication and supports repair decisions.
That is successful troubleshooting.