On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Error #000000008 indicating RTC failure causing incorrect date/time, logging issues, or startup errors affecting patient data accuracy.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
- Remove the monitor from active patient use if time/date accuracy affects documentation or EMR integration.
- Expected: Patient safely transferred to another monitor.
- Why it matters: Incorrect timestamps can compromise patient records and clinical decisions.
2. Verify the Reported Error and Behavior
- Power on the device and confirm Error #000000008 appears. Observe if:
- Time/date resets on power cycle
- Device shows incorrect or default time
- Error appears at startup or intermittently
- Expected: Error is reproducible and timekeeping is incorrect.
- Why it matters: Confirms a true RTC-related fault versus a transient glitch.
3. Check Date and Time Settings
- Navigate to system settings and verify current date and time. Attempt to manually set the correct values.
- Expected: Device accepts and retains updated date/time.
- Why it matters: Misconfiguration can mimic RTC failure.
- If settings correct and hold → return to service
- If settings reset after reboot → continue
4. Perform a Power Reset
- Power down the unit, unplug from AC power, and remove battery (if accessible). Wait 60 seconds, then restore power and restart.
- Expected: Device boots normally and retains correct time.
- Why it matters: Clears temporary faults affecting system clock behavior.
- If resolved → return to service
- If error persists → continue
5. Check Battery Status (External Check Only)
- Reconnect AC power and ensure the device battery is installed and charging properly (check battery indicator/status).
- Expected: Battery is recognized and charging normally.
- Why it matters: Some RTC functions rely on internal backup power stability.
- If battery not detected or faulty → replace battery and retest
- If battery is good → continue
6. Check for Recent Power Loss or Storage Conditions
- Ask if the device was:
- Stored without power for an extended period
- Fully discharged for a long time
- Expected: Normal usage conditions.
- Why it matters: Extended loss of power can reset RTC and trigger errors.
- If yes → recharge fully, set time, and retest
- If no or issue persists → continue
7. Inspect for External Signs of Damage
- Check for signs of:
- Liquid intrusion
- Physical impact
- Corrosion around battery compartment
- Expected: No visible damage.
- Why it matters: RTC circuitry can be affected by environmental damage.
- If damage found → remove from service
- If no damage → continue
If the Problem Persists
If the error continues after verifying settings, power reset, and battery condition:
External causes have been ruled out
Persistent RTC errors strongly indicate internal clock circuit or internal backup battery failure
Action:
Remove device from service
Label as Out of Service
Send for repair or bench evaluation
Knowing when to stop is proper troubleshooting.
Clinical Use Tip
Never rely on a monitor with incorrect time/date—this can lead to inaccurate charting, trending errors, and EMR documentation issues.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Unit displaying Error #000000008 (real-time clock error). Time/date not retaining after power cycle."
Cause
What was observed during troubleshooting.
Example:
"RTC failure suspected after confirming settings reset, power cycle ineffective, and battery functioning properly."
Resolution
What action was taken.
Example:
"Removed from service, labeled out of service, and sent for repair evaluation."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
RTC errors may seem minor but directly impact patient data integrity. Always verify timekeeping first, rule out power-related causes, and escalate appropriately when persistence indicates internal failure.
That is successful troubleshooting.