Revision D 250 Series Maternal/Fetal Monitor 5-49
2020551-001
Troubleshooting: General Troubleshooting
Internal UA Troubleshooting
MECG Troubleshooting
Table 26. Internal UA Troubleshooting
Problem Probable Cause Possible Solution
Internal pressure not measuring correctly.
Transducer not properly connected to
monitor.
Air bubble in dome; or catheter blocked.
Dome is cracked.
Strain gauge not at same height as
catheter tip.
Catheter has fallen out of place.
Catheter or strain gauge not zeroed.
Service required.
Ensure transducer is securely attached
to monitor.
Flush dome and catheter.
Replace dome.
Adjust strain gauge height.
Replace catheter.
Calibrate catheter or strain gauge.
Call Biomedical Engineering
Department.
CHECK IUP message displayed in UA area
of the display.
Blockage in fluid-filled catheter.
Fetus pressing directly on catheter.
Defective strain gauge or catheter.
Service required.
Flush catheter. Re-zero. Replace
catheter if necessary.
Reposition by twisting catheter.
Replace strain gauge or catheter.
Call Biomedical Engineering
Department.
Table 27. MECG Troubleshooting
Problem Probable cause Possible solution
MECG erratic or not functioning properly.
Patient cable not properly connected to
monitor.
Electrodes not properly placed.
Clips not attached to electrodes properly.
Electrode gel dried.
Defective MECG cable.
Service required.
Selected lead providing
inadequate signal.
Ensure patient cable is securely
attached to monitor.
Re-apply electrodes.
Check clip attachments.
Check electrodes and re-apply gel if
necessary.
Replace cable.
Call Biomedical Engineering
Department.
Change lead selection on MHR/P Setup
screen.
Dashes (– – –) shown in MHR/P area of
display.
Monitor unable to make a determination
due to insufficient signal.
Ensure patient is not asystolic.
Ensure electrodes are firmly secured to
patient.
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