On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Addresses Tango+ failing self-test or calibration due to setup issues, accessories, or external factors affecting accuracy or system readiness.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Remove the device from active patient testing.
- Do not perform calibration or troubleshooting during an active stress test.
Verify the Reported Failure
- Power on the Tango+ and observe the exact message or behavior:
- Does the self-test fail at startup?
- Does calibration fail when initiated?
- Are there any error codes or prompts?
Check Power Source and Stability
- Ensure the unit is connected to a known good outlet or has sufficient battery charge.
- Verify power cord is secure.
- Check for intermittent power loss.
Inspect and Reseat Cuff and Tubing
- Remove and reconnect all NIBP accessories.
- Check cuff tubing for cracks, leaks, or kinks.
- Ensure proper connection at the device port.
- Confirm correct cuff size and type.
Check for Environmental or Setup Issues
- Verify proper conditions for calibration.
- Device on stable, level surface.
- No excessive vibration (e.g., treadmill running nearby).
- No active pressure in the system.
Perform Manual Calibration Procedure
- Initiate calibration per device interface.
- Follow on-screen prompts.
- Ensure cuff is not applied to a patient.
- Allow full completion without interruption.
Restart the Device
- Power cycle the Tango+.
- Turn off completely.
- Wait 10–15 seconds.
- Power back on and repeat self-test.
Check for Repeated Failure Patterns
- If failure persists, observe:
- Same failure point each time.
- Any unusual noises (pump running continuously or not at all).
- Any error messages or codes.
If the Problem Persists
If all external causes have been ruled out and the Tango+ continues to fail self-test or calibration, the issue is likely internal (pressure sensor, pump, or control board).
Remove the device from service, label it Out of Service, and send for repair or bench evaluation.
Knowing when to stop prevents unnecessary troubleshooting and ensures patient safety.
Clinical Use Tip
Always perform calibration checks before starting a stress test. Never troubleshoot calibration issues with a patient connected.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Tango+ failing self-test and unable to complete calibration prior to stress test."
Cause
What was observed during troubleshooting.
Example:
"Calibration failure persisted after verifying power, tubing integrity, and performing manual calibration—likely internal pressure sensing issue."
Resolution
What action was taken.
Example:
"Removed device from service and sent to Clinical Engineering shop for further evaluation and repair."
Helpful Details to Include (If Known)
- Alarm behavior during self-test or calibration
- Accessories swapped or replaced
- Power behavior and outlet verification
- Environmental factors (movement, vibration)
- Indicator lights or system messages
- Final device status (removed from service)
Final Thought
Calibration and self-test failures should always be approached by ruling out external factors first. Once those are eliminated, escalation is the correct and safe decision. Proper documentation ensures traceability and supports efficient repair.
That is successful troubleshooting.