Service manual
Radical Signal Extraction Pulse Oximeter Service Manual
UM-10026 – 1204
5-3
Symptom Cause and Corrective Action
Steps
• Speaker Alarming (very
loud) and unit is not
functioning or displaying.
• Probable Watchdog error.
1. Replace System Board.
• Alarm LED does not
Illuminate
1. Unit must be in alarm state
2. Audible alarm can be heard
1. Replace System Board.
•
Alarm Condition But No
Audible Indication.
1. Unit is in alarm condition.
1. Replace Speaker
2. Replace System Board
• Display Missing Segments
1. Replace Display.
2. Replace System Board
• Button Function Error
1. Any front panel button
affected
2. Buttons do not activate
feature.
1. Replace Keypad
2. Replace System Board
• "No Sen", or “Sen Off”
Displayed.
1. Cable is connected with
sensor attached.
1. Replace sensor.
2. Replace patient cable.
3. Replace oximeter board.
4.
• Rad-5 Will Not Turn Off
1. Replace System Board
2. Replace Keypad
If unable to repair unit, then please call (800)326-4890 option #2 to arrange for
return to Masimo Corporation.