16-6 250cx Series Maternal/Fetal Monitor Revision C
2036946-001
Troubleshooting: Internal UA Troubleshooting
Internal UA Troubleshooting
Flashing “+” sign. mmHg > 100 (13.3 kPa) Press the UA Reference button between
contractions.
CHECK TOCO message is shown in UA
area of the display area when the
UA
Reference
button is pressed.
UA Reference button pressed before
UA circuits stabilized.
UA Reference range exceeded due to
over-tightening belt.
Transducer defective.
Service required.
You must wait 10 seconds following
powering on the monitor and/or
connecting to the
UA connector.
Loosen belts or remove transducer from
patient. Press
UA Reference button while
no pressure is applied to transducer
button. Re-apply transducer. Do not
overtighten belt. Press
UA Reference
button again between contractions. (See
“Out of Range Condition” on page 6-4 for
further information.)
Replace transducer.
Call Biomedical Engineering
Department.
Internal UA Troubleshooting
Problem Probable Cause Possible Solution
Internal pressure not measuring correctly.
Cable not properly connected to monitor.
Catheter has fallen out of place.
Catheter zeroed.
Service required.
Ensure cable is securely attached to
monitor.
Replace catheter.
Calibrate catheter.
Call Biomedical Engineering
Department.
CHECK IUP message displayed in UA area
of the display.
Blockage or kinked catheter.
Fetus pressing directly on catheter.
Defective catheter.
Service required.
Flush catheter. Re-zero. Replace
catheter if necessary.
Reposition by twisting catheter.
Replace catheter.
Call Biomedical Engineering
Department.
External UA Troubleshooting
Problem Probable Cause Possible Solution
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