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