Keys; Display/Alarms - Nellcor OXIMAX N-600X Series Service Manual

Keys

This section relates to non-responsive keys.
Symptom
Keys do not respond when
the oximeter is turned on.

Display/Alarms

This section relates to non-functioning displays and audible tones or alarms.
Symptom
Display values are missing
or erratic.
Display pixels do not light.
Alarm sounds for no
apparent reason.
Alarm does not sound.
Primary speaker fails and
a slow-pulsing, high-
pitched tone sounds.
Service Manual
Table 28. Keys Problems
Recommended Corrective Action
•
Replace the Main Board PCB. See Main Board PCB
Replacement, page 179.
•
If the keys still do not work, replace the Top enclosure
assembly. See Top Case Assembly Replacement, page 183.
Table 29. Display/Alarms Problems
Recommended Corrective Action
•
If the OxiMax pulse oximetry sensor is connected, replace
the pulse oximetry cable.
•
If the condition continues, replace the OxiMax pulse
oximetry sensor.
•
If the condition persists, replace the Main Board printed
circuit board. See Main Board PCB Replacement, page 179.
•
Check the connection between the Main Board PCB and the
Display PCB.
•
If the condition continues, replace the Display PCB. See
Display PCB Replacement, page 177.
•
If the condition persists, replace the Main Board PCB. See
Main Board PCB Replacement, page 179.
•
Moisture or spilled liquids can cause an alarm to sound.
Allow the oximeter to dry thoroughly before using.
•
If the condition persists, replace the Main Board PCB. See
Main Board PCB Replacement, page 179.
•
Check the alarm silence status.
•
Check the speaker connection.
•
Replace the speaker as described in Alarm Speaker
Replacement, page 181.
•
If the condition persists, replace the Main Board PCB. See
Main Board PCB Replacement, page 179.
•
Press the HELP/CONTRAST button and follow the on-screen
messages.
10030881 Rev. B 12-2008
Keys
153