
5-4 Rad-57 Signal Extraction CO-Pulse Oximeter Operator’s Manual
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Rad-57 Signal Extraction CO-Pulse Oximeter Operator’s Manual 6-1
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alarms / messages
MESSAGES CONTINUED
DISPLAY TYPE SOLUTION
No Cable Connected Connect appropriate cable to unit.
System Fault
Return for service.
There are several error codes. All error
codes require return of the unit to an
authorized service center for repair. See
Section 9, Service and Repair.
Defective cable Replace cable
Incompatible cable Connect appropriate cable
Defective sensor Replace sensor
Unrecognized
sensor
Connect appropriate cable
troubleshooting
Troubleshooting
The following chart describes what to do if the Rad-57 system does not operate properly
or fails.
PROBLEM POSSIBLE CAUSE(S) RECOMMENDATION
DIFFICULTY
OR NO SpCO
READING
Interference from line-
frequency induced
noise.
Inappropriate sensor
Excessive motion
Minimize or eliminate interference from
surgical or flourscent lighting.
Verify/set 50/60hz menu setting. Refer
to Section 3, Initial Setup for details.
Verify use of an SpCO capable sensor.
LNOP or LNCS or LNOPv sensors can
not provide SpCO measurements.
Minimize or eliminate motion at the
monitoring site.
Also, see Section 4, Successful
Monitoring for additional information.
UNIT DOES NOT
POWER ON
Low battery Check / replace battery
CONTINUOUS
SPEAKER TONE
Internal Failure
Unit requires service. Press the Alarm
Silence button. If alarm continues to
sound, power down unit and remove
batteries.
NO SPEAKER
TONE
Pulse tone set to “mute”
Alarm Silence Enabled
Press Up Arrow.
Inspect Alarm Silence Indicator. See
Section 4, Alarm Silence. Press Alarm
Silence Button until Alarm Silence
Indicator is no longer illuminated or
flashing.
BUTTONS DON’T
WORK WHEN
PRESSED
Internal Failure Return for service.
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