Nellcor OxiMax N-550 Service Manual page 21

N-550
5. Once the display test portion of POST is complete, the N-550 version is
displayed for approximately two seconds.
Note: The version above is only a sample. Check your N-550 for the current
version installed.
The version number is needed when calling Nellcor's Technical
Services Department, 1.800.635.5267, or your local Nellcor
representative for technical assistance. Write down the number and
have it available prior to requesting technical assistance.
6. If the N-550 detects an internal problem during the POST, an alarm tone
sounds and the N-550 displays an Error Code and corresponding number.
See Troubleshooting on page 43.
7. Upon successful completion of the POST, the N-550 sounds a one-second
tone indicating that the N-550 has passed the test.
WARNING: If you do not hear the POST pass tone, do not use the N-550.
WARNING: Ensure that the speaker is clear of any obstruction. Failure
to do so could result in an inaudible alarm tone.
Performance Verification
11