User's Manual

14-13
SpO
2
Troubleshooting Guide
Clinical Situation Possible Cause Solution
No SpO
2
parameter key
is displayed
■ Module not inserted correctly. ■ Remove and reinsert the module.
■ Adapter cable not connected to
module properly.
■ Correctly connect the adapter cable.
■ Sensor not connected to adapter
cable.
■ Correctly connect the sensor.
■ SpO
2
is not enabled at the 90343
transmitter.
■ Call a qualified service person to
check transmitter DIP switch 1 and 2.
■ SpO
2
is not enabled at the 90478
receiver.
■ Call a qualified service person to set
transmitter DIP switch 8 to OFF.
SpO
2
value displays ??? ■ Sensor not connected to patient. ■ Reattach the sensor.
■ Excessive patient motion. ■ Urge patient to remain still while
reading is in progress.
■ Module is in the initialization phase
(the first 15-seconds after sensor
application).
■ Wait until the initialization is
complete.
■ Adapter cable not connected to the
module properly.
■ Correctly connect the adapter cable.
■ Sensor not connected to the adapter
cable.
■ Correctly connect the sensor.
■ Low battery indicator constantly
illuminated.
■ Call a qualified service person.
Low signal strength ■ Sensor placement not optimum. ■ Move the sensor to a site which has
better perfusion.
■ Align the LED with the sensor photo
detector.
■ Sensor is placed below blood pressure
cuff.
■ Move the sensor to an alternate limb.
Intermittent or complete
failure to operate
■ Module error. ■ Call a qualified service person.