
Rad-8 Signal Extraction Pulse Oximeter Operator’s Manual 6-1
6
troubleshooting
Troubleshooting
The following chart describes what to do if the Rad-8 system does not operate properly
or fails.
PROBLEM POSSIBLE CAUSE(S) RECOMMENDATION
DEVICE DOES NOT
POWER ON
Low battery/ not plugged into
AC power supply
Connect the AC Power Cord to the
Rad-8 and to an AC outlet. Make sure
that the AC Power Indicator light is on.
BATTERY RUN-TIME
IS SIGNIFICANTLY
REDUCED
Low battery
Contact Technical Services or your
local Masimo representative.
CONTINUOUS
SPEAKER TONE
Internal Failure
Device requires service. Press
the Alarm Silence Button. If alarm
continues to sound, power down
device. If the power button does not
turn the device off, press and hold the
Power Button for 5 seconds. Return
the device for service.
NO SPEAKER TONE
Pulse tone set to “mute”
Press Up Arrow or Alarm Volume
Adjust.
NO ALARM TONE
Alarm Silence Enabled See Section 4, Alarm Silence.
SENSOR OFF
MESSAGE
Sensor not connected to
patient properly.
Sensor is damaged
.
Properly reapply the sensor on the
patient and reconnect the sensor to
the unit or patient cable.
If the sensor is damaged, replace the
sensor.
NO SENSOR
MESSAGE
Sensor is disconnected from
patient cable.
Sensor connected upside
down into patient cable
.
Check to see if the sensor LED is
flashing. Disconnect and reconnect
the sensor. If the LED fails to operate,
replace the sensor.
LOW PERFUSION
(PI BAR TURNS RED)
Improper sensor type.
Poorly perfused site.
Sensor is too tight.
A disorder such as hypothermia,
vasoconstriction, hypovolemia,
peripheral vascular disease or
anemia.
Sensor is damaged
.
Verify proper sensor and sensor size
for the patient.
Check and see if blood flow to the site
is restricted. Be sure that the sensor is
not on too tight.
Set unit to MAX sensitivity.
Warm the patient or sensor site.
Move sensor to better perfused site.
LOW SIGNAL
QUALITY
Improper sensor type or
application.
Excessive motion relative to
perfusion, or poor perfusion.
Sensor
or cable is damaged
or not functioning.
Check and see if blood flow to the site
is restricted.
Check the placement of the sensor.
Re-apply sensor or move to a different
site.
Replace sensor or cable.
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