Respironics 920M PLUS Operator's Manual page 31

Troubleshooting Guide (Continued)
Problem
You are unable to obtain
a green blinking pulse
quality display.
Pulse quality indicator is
blinking red and the
SpO and/or pulse rate
2
displays show dashes.
Segments of the SpO
pulse rate displays are
missing.
Disruption in the 920M
PLUS performance.
If these solutions do not correct the problem, please contact Respironics Customer Support
at (800) 345-6443 (USA and Canada) or (724) 387-4000.
1007336
3485-000-03
Troubleshooting Guide
Possible Cause
Low patient pulse strength;
or
the sensor site is poorly
perfused;
or
the sensor is not correctly
positioned.
The sensor is attached too
tightly, or tape or other items
are restricting the pulse
quality at the sensor site.
Circulation is reduced due to
excess pressure between
the sensor and a hard
surface.
Excessive ambient light.
Excessive patient motion.
The sensor is applied to a
polished finger or toe nail.
Interference from:
• arterial catheter
• blood pressure cuff
• electrosurgical procedure
• infusion line
An inadequate signal at the
sensor site.
Excessive motion at the
sensor site may be
prohibiting the 920M PLUS
from acquiring a consistent
pulse signal.
Sensor failure.
or Defective LED displays.
2
Electromagnetic interference
(EMI).
Possible Solution
Reposition the sensor on the
patient.
Reapply the sensor, select an
alternate sensor site, or remove
the restrictive material from the
sensor site.
Allow the sensor and finger, foot,
etc., to rest comfortably on the
surface.
Reduce the ambient light.
Reduce the patient motion.
Remove the nail polish.
Reduce or eliminate the
interference.
Examine the patient:
reposition the sensor or select an
alternate sensor site.
Eliminate or reduce the cause of
the motion artifact or reposition the
sensor to a sensor site where
motion is not present.
Replace the sensor.
Displayed values may not be
reliable; discontinue use of the
920M PLUS.
Remove the 920M PLUS from the
EMI environment.
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