Operational Performance; Data Port - Nellcor OXIMAX N-600X Series Service Manual

Troubleshooting

Operational Performance

This section relates to operational performance where no error codes display.
The Pulse Amplitude
indicator seems to indicate
a pulse, but displays zeroes.
%SpO
change rapidly; Pulse
Amplitude indicator is
erratic.

Data Port

This section relates to data port issues.
No printout received.
The RS-232 nurse call is
inoperable.
154
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Table 30. Operational Performance Problems
Symptom
•
The OxiMax pulse oximetry sensor may be damaged;
replace the sensor.
•
If the condition persists, replace the Main Board PCB. See
Main Board PCB Replacement, page 179.
•
or pulse values The OxiMax pulse oximetry sensor may be damp or may
2
have been reused too many times. Replace the sensor.
•
An electrosurgical unit (ESU) may be interfering with
performance:
•
Move the oximeter and its cables and OxiMax pulse
oximetry sensors as far from the ESU as possible.
•
Plug the oximeter power supply and the ESU into different
AC circuits.
•
Move the ESU ground pad as close to the surgical site as
possible and as far away from the OxiMax pulse oximetry
sensor as possible.
•
Verify the performance with the procedures detailed in
Operating the Oximeter, page 55.
•
If the condition persists, replace the Main Board PCB. See
Main Board PCB Replacement, page 179.
Table 31. Data Port Problems
Symptom
•
Confirm the printer is working through an alternate means.
•
The oximeter's baud rate does not match the printer.
Change the baud rate of the oximeter following
instructions in Configuring the Data Port Interface, page 84.
•
If the condition persists, replace the Main Board PCB. See
Main Board PCB Replacement, page 179.
•
Verify the connections are made between pins 5 (GND) and
11 (nurse call) of the data port. See Using the Nurse Call
Interface, page 93.
•
Verify the output voltage between ground pin 5 and pin 11
is -5 to -12 VDC (no alarm) and +5 to +12 VDC (during
alarm). See Using the Nurse Call Interface, page 93.
•
If the condition persists, replace the Main Board PCB. See
Main Board PCB Replacement, page 179.
10030881 Rev. B 12-2008
or call 1-800-674-3655
Recommended Corrective Action
Recommended Corrective Action
Service Manual