30
Troubleshooting
Troubleshooting
Problem
Possible Cause
Possible Solution
Device will not activate.
The device has no power.
Plug in the AC power supply.
The battery pack is connected
incorrectly.
Check the battery pack connector
orientation.
The battery pack is not
charged.
Plug in the device AC power supply to
charge the battery pack. New battery
packs must complete one charge/
discharge/recharge cycle before the
Battery LED displays the actual capacity.
The battery pack will not
charge.
Contact Nonin Technical Service for
repair or replacement.
Unable to obtain a green
pulse display on the bar
graph.
The patient pulse strength is
low.
Reposition the sensor or apply the sensor
to a different finger, and keep the sensor
motionless for at least 10 seconds; warm
the sensor application area.
Circulation is reduced due to
excess pressure on the sensor
(between the sensor and a
hard surface) after inserting
finger.
Identify the source of the pressure. Allow
the hand to rest comfortably without
squeezing or pressing the sensor on a
hard surface.
The sensor is applied
incorrectly.
Apply the sensor according to the
Instructions for Use provided with the
sensor.
Possible interference from one
of the following sources:
• arterial catheter
• blood pressure cuff
• electrosurgical procedure
• infusion line
Reduce or eliminate any interference.
The red LED is not illuminated
in the finger insertion area.
Contact Nonin Technical Service.
There is excessive ambient
light.
Shield the sensor from the light source.
The sensor is applied to a
polished or artificial fingernail.
Apply the sensor to a finger without
fingernail polish or an artificial nail.
Excessive patient motion.
Reduce patient motion.
