GE Corometrics 250cx Series, Service Manual, Page: 191 / 252

Revision C 250cx Series Maternal/Fetal Monitor 5-51
2036947-001
Troubleshooting: General Troubleshooting
Maternal Pulse Oximetry Troubleshooting
Error Log Screen
Table 22. Maternal Pulse Oximetry Troubleshooting
Problem Probable Cause Possible Solution
COMM message shown in MSpO
2
area of
display.
„
Communication error between the built-
in MSpO
2
module and the remainder of
the monitor circuitry.
„
Contact Biomedical Engineering
Department.
Dashes (– – –) shown in MSpO
2
display
area.
„
Monitor unable to make a determination
due to insufficient signal.
„
Improperly applied sensor.
„
Excessive maternal movement.
„
Excessive ambient light.
„
Damaged sensor
„
Check patient. The patient may be
experiencing shock, hypotension,
severe vasoconstriction, severe
anemia, hypothermia, arterial occlusion
proximal to the sensor, or cardiac
arrest.
„
Ensure that the intermediate cable is
firmly attached to the monitor and to
the sensor assembly.
„
Ensure sensor is not too tight. Move
sensor to another location.
„
Restrict patient limb movement.
Restrain limb if necessary.
„
Cover sensor with opaque material.
„
Replace sensor.
MHR/P Pulse source is blank when MSpO
2
is selected
„
Normal mode selected
„
Select Fast mode on MSpO
2
Setup
screen.
REPAIR message shown in MSpO
2
area of
display. (Nellcor only)
„
System error or self-test failure.
„
Contact Biomedical Engineering
Department.