Nellcor OxiMax N-550, Service Manual

Page: 60 / 138

Troubleshooting
50
• displays a red “EEE” in the left numeric display area
• displays a red error code in the left numeric display
Note: Cycling the power clears the displayed error code
Table 11: Error Codes
Error
Code
Meaning
1 SpO
2
front end RAM error
2 SpO
2
front end ROM/code integrity error.
3 SpO
2
front end reported a bad CRC
4 SpO
2
front end reported FSP message not allowed
5 SpO
2
front end reported illegal value sent in FSP messageSpO
2
front
end
6 SpO
2
front end reports calibration (offset) failure
9 SpO
2
front end reported syntax error in FSP message
10
Over
-
current limit in SpO
2
front end has tripped
11 SpO
2
front end reports incorrect system voltage
12 SpO
2
front end reports other hardware problem
14 SpO
2
front end reports communication channel overflow
16 SpO
2
front end reports watch dog time out
17 SpO
2
front end reports that sensor appears defective
18 SpO
2
front end reports internal register appears modified from
expected value
19
SpO
2
front end reports signal out
-
of
-
range
48 SpO
2
front end reports spurious interrupt
49 SpO
2
front end reports internal buffer overflow
50 SpO
2
front end reports intermittent error
51 SpO
2
front end reports digital communications error
52 SpO
2
front end reports warmer error
53 Front end data not received
256 SpO2 back end reports beginning of packet missing
257 SpO2 back end reports packet start ID (SID) missing