Symptom Possible cause Suggested action
There is a leak in the pneumatic system. Ensure all cuff attachments are
tight. Carefully check for leaks in
blood pressure cuff and tubing
attached to the device.
Replace the cuff.
Update the software.
Perform NIBP functional checks.
Perform NIBP calibration checks.
Replace the pump assembly.
Replace the main board.
The NIBP module needs calibration. Update the software.
Perform NIBP functional checks.
Perform NIBP calibration checks.
Replace the pump assembly.
Replace the main board.
The NIBP module malfunctioned. Update the software.
Perform NIBP functional checks.
Perform NIBP calibration checks.
Replace the pump assembly.
Replace the main board.
The single or dual lumen switch failed. Ensure that the cuff is the
properly sized.
Clean the cuff connections.
Replace the cuff and tubing.
Replace the main board.
The NIBP cuff does not inflate.
NIBP is not functioning.
There is a leak in the pneumatic system. Ensure all cuff attachments are
tight. Carefully check for leaks in
blood pressure cuff and tubing
attached to the device.
Replace the cuff.
Update the software.
Service manual Appendix 155
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