Welch Allyn Spot Vital Signs 4400, Service Manual

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Symptom Possible cause Suggested action
Use only Welch Allyn cuffs.
Patient's arm is not positioned properly or
moves during blood pressure cycle.
Ensure patient's arm is resting
on a surface at heart level.
Keep arm still to reduce
artifact.
Blood pressure cuff is placed over clothing. Take blood pressure on a bare
arm.
The patient is experiencing arrhythmia. Check for regularity of heart
rate (palpate pulse or check
device).
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.
Service manual Appendix 99