Covidien Nellcor PM10N Service Manual page 87

Error condition by category
Sound
No sound during POST
Buzzer sounds during POST,
monitoring system message:
System Failure (910)
Audio alarm cannot be silenced.
Audio alarm does not silence for
the time specified in the
Institutional Default settings.
Buttons
No response when control
buttons are pressed
SpO / sensor
2
Sensor messages:
SpO Pulse Search
2
SpO Sensor Off
2
SpO Cable/Sensor Disconnect
2
Signal Artifact Detected
Service Manual
Table 5-1. Error Conditions and Resolutions (Continued)
Cause or checkpoint
Speaker cable is loose or
disconnected.
Speaker is malfunctioning.
Main board is malfunctioning.
Speaker cable is disconnected.
Speaker is malfunctioning or main
board is malfunctioning.
Main board is malfunctioning.
Keypad is damaged.
Institutional defaults not set
correctly.
Silence Alarm button activator on
main board is malfunctioning.
Keypad ribbon cable not making
contact.
System is frozen.
Buttons are defective.
Button activators on main board are
malfunctioning.
Sensor disconnected from cable or
monitoring system.
Detached from patient.
Unable to get reliable readings
because of substances on patient's
skin or nails, or because of excessive
patient motion.
Troubleshooting Guide
Corrective action
Reseat speaker cable in main board.
Ensure connector on main board is firmly seated.
If problem persists, replace speaker.
Replace main board.
Ensure the speaker cable is connected to main
board.
Test the short circuit in a speaker by using the
digital multi meter. If there is a short in the
speaker, replace the speaker. If not, replace the
main board.
Replace the main board.
Replace the front case assembly.
Reset institutional defaults.
Replace the main board.
Check that the keypad ribbon cable is connected
to main board.
Press and hold the Power On/Off button for 10
seconds to restart.
Replace the front case assembly.
Replace the main board.
Check all connections.
Reposition sensor and secure cable.
Remove items of interference (electrosurgical
device, cell phone, nail polish, cream).
If problems persist, replace the cable or sensor.
5-3