Table 18. Operational Performance Problems - Nellcor OxiMax N 5500 Service Manual

Troubleshooting
5.5.5 Operational Performance
Table 18 lists symptoms of problems relating to operational performance (no error codes
displayed) and recommended actions. If the action requires replacement of a PCB or
module, refer to Disassembly Guide.
1. Monitor appears to be
operational, but physiological
values are suspect or
nonexistent.
2. Printer paper will not advance. 1. Open printer door and check paper is present.
3. Printer paper will advance, but
paper remains blank when
printing should be present.
5.5.6 Error Codes
When the N5500 detects an error condition, the monitor will attempt to show an error
code on the display screen.
If such an error occurs during monitoring operation, the monitor will sound a low-
priority alarm. Audible alarm can be terminated by pressing Alarm silence/suspend
switch, but it depends on error codes and conditions.
Table 19 provides a complete list of error codes and problem identification.
If an error code occurs, take the following actions:
1. Turn monitor off, then on again.
Note: If error code still appears, take monitor out of service and contact Nellcor
Technical Services or your local Nellcor representative for advice on remedial
action.
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Table 18. Operational Performance Problems

Symptom
1. Replace each patient cable (or hose) with a known
2. Ensure internal ECG, temperature, and SpO
3. If problem persists, replace main PCB assembly.
2. If problem persists, ensure printer wire is
3. If problem persists, replace printer.
1. Open printer door and check paper is oriented
2. If problem persists, replace printer.
N5500 Service Manual
Recommended Action
serviceable cable.
cables are connected to main PCB assembly.
Ensure hoses in pneumatic system are properly
connected, and NIBP pump motor is connected to
power supply PCB assembly.
connected to SpO PCB assembly.
2
correctly.
2