
21
Troubleshooting
Pulse Quality LED does
not blink green.
Inadequate pulse signal
or
the sensor is not correctly
positioned.
Reposition the sensor.
The sensor is restricting blood
circulation at the sensor site.
Remove the restriction to
increase blood circulation at
the sensor site
or
relocate the
sensor.
Excessive ambient light.
Reduce ambient light.
Excessive patient motion.
Reduce patient motion.
The patient is wearing nail polish
or artificial nails.
Remove nail polish or artificial
nails.
Performance degradation from:
• arterial catheter
• blood pressure cuff
• infusion line
Reduce or eliminate the
source.
The Pulse Quality display
is blinking red and the
SpO
2
and/or Pulse Rate
displays are dashes.
Inadequate signal at sensor site. Assess the patient. Reposition
sensor
or
select an alternate
sensor site.
Inadequate pulse signal due to
excessive motion.
Reduce patient motion.
Reposition
or
relocate the
sensor.
Sensor failure.
Replace the sensor.
Note
: If these solutions do not correct the problem with your device, please contact
Nonin Technical Service at (800) 356-8874 (USA and Canada), +1 (763) 553-9968, or
+31 (0)13 - 79 99 040 (Europe).
Problem
Possible Cause
Possible Solution