Duo™ Service Manual 0070-10-0604-01 4 - 5
Repair Information Troubleshooting Guide
Module Failures
MESSAGE/
PROBLEM REASON SOLUTION
NIBP cuff cannot
be inflated.
Pinched or leaking hose
or cuff
Check hose and cuff. Replace as needed
Intermittently won't
take an NIBP
reading.
Loose cuff or patient
movement
Keep the patient quiet. Reapply cuff
NIBP readings
inappropriately
high or low for
patient condition.
Incorrect cuff size.
Incorrectly applied cuff
Use appropriate size cuff. Ensure correct cuff
application
NIBP module is out of
calibration
Calibrate/replace NIBP module
No SpO
2
reading SpO
2
sensor or cable
damaged or
disconnected
Check sensor placement and connection. Replace
if damaged
Sensor not on patient
SpO
2
value is
inaccurate
SpO
2
sensor or cable
damaged or
disconnected
Check sensor placement and connection. Replace
if damaged
Sensor not on patient
Coloring agent (dye)
has been injected into
patient
Retry after the coloring agent has dissipated
Patient movement Keep patient quiet
Patient is cold Warm patient and retry
Patient is wearing nail
polish
Remove nail polish