User's Manual
26
TROUBLESHOOTING
Problem Possible Cause Possible Solution
The oximeter won’t turn on.
The batteries are out. Replace all batteries.
The batteries are 
installed incorrectly.
Verify correct battery 
orientations. 
A dash appears in the LED.
A probe fault exists. 
The probe may have 
become dislodged 
from the oximeter or 
from the subjects.
Verify that the probe 
is correctly connected 
to the oximeter and 
the subject. Try a new 
probe if the condition 
persists.
The displayed pulse rate 
does not correlate to the 
pulse rate displayed on 
the ECG monitor connects 
to patient.
Excessive motion 
at the probe site 
may be prohibiting 
the oximeter from 
acquiring a consistent 
pulse signal.
Eliminate or reduce the 
cause of the motion 
artifact or reposition 
the probe to a new 
probe site where 
motion is not present.
The subject may 
have an arrhythmia 
resulting in some 
heart beats that do 
not yield a pulse 
amplitude signal at 
the probe site.
Examine the subject:
the condition may 
persist even though 
both monitors are 
functioning properly 
if the subject's 
arrhythmia persists.
A non-oximeter probe 
is being used.
Replace the probe with 
a oximeter probe.
The ECG monitor may 
not be functioning 
properly.
Examine the subject: 
replace the ECG 
monitor or refer to the 
operator's manual for 
the ECG monitor.










