Nellcor OxiMax N600x
Nellcor · Model OxiMax N600x
Three display options: plethysmographic waveform, large numerics and customizable real-time trend. On-screen quick guide provides instant help to assist caregivers with monitor operation. Convenient selection of adult or neonate alarm limits, and user-configurable power-on settings. User-selectable fast-averaging mode (2-3 seconds) to more precisely track rapidly changing saturations. On-screen viewing of 24-48 hours of SpO2 and pulse rate trends taken at 2-4 second intervals; printing capability. Variable pitch beep tone enables clinicians to hear changes in SpO2. Backup speaker with escalating alarm tones. Interfaces with certain multiparameter monitors; real-time patient information and true physiologic waveforms are displayed on host system. Works with the Oxinet™ III remote respiratory monitoring system to provide an easy-to-use, cost-effective monitoring solution for the general care floor. 7-hour battery life with battery gauge for convenient portability.
Key tips
- ·A no-signal/flatline alarm gets checked on the patient first, not the monitor - rule out a real clinical event before troubleshooting.
- ·Recalibrate NIBP against a reference manometer, not just a self-test pass.
- ·Reused patient cables (SpO2, ECG leads) are a common source of intermittent-fault complaints - swap the cable before the module.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
No SpO2 / pulse reading or poor signal
HighSymptoms: No saturation / pulse value, low signal-quality / "pulse search", implausible values.
Root cause: Worn or wrong SpO2 sensor, a damaged extension cable, poor site / perfusion, or motion.
Sensor / cable connector fault
MediumSymptoms: Reading drops when the cable is moved, sensor not recognised.
Root cause: Broken conductors in the sensor / extension cable or a worn connector.
Inaccurate SpO2 vs a co-oximeter
MediumSymptoms: SpO2 consistently biased vs an arterial co-oximetry reference.
Root cause: Sensor degradation, or a monitor calibration / module fault.
Alarm / audio fault
MediumSymptoms: No or quiet audible alarm.
Root cause: Speaker or audio-board fault - a safety-critical failure.
Battery / power fault
MediumSymptoms: Short battery run time, will not power on.
Root cause: Aged battery.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
SpO2 sensor (reusable / disposable)
Class Frequent wear itemRel. cost $$R&R Easy
SpO2 extension cable
Class Frequent wear itemRel. cost $$R&R Easy
Battery
Class Periodic replacementRel. cost $$R&R Fairly easy
Alarm speaker / audio board
Class Major service partRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| SpO2 sensor (reusable / disposable) | Frequent wear item | $$ | Easy |
| SpO2 extension cable | Frequent wear item | $$ | Easy |
| Battery | Periodic replacement | $$ | Fairly easy |
| Alarm speaker / audio board | Major service part | $$ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Routine cable and lead-wire inspection for fraying/wear
- ·Battery conditioning cycle
- ·NIBP calibration check against a reference manometer
- ·ECG / SpO2 accuracy verification against a patient simulator
- ·Annual electrical safety test
Error Codes
Extracted directly from this unit's own service manual.
1%SpO 2 front end RAM error.
2%SpO 2 front end ROM/code integrity error.
3%SpO 2 front end reported a bad Cyclic Redundancy Check ( CRC).
4%SpO 2 front end reported FSP message not allowed.
5%SpO 2 front end reported illegal value sent in FSP message %SpO 2 front end.
6%SpO 2 front end reports calibration (offset) failure.
9%SpO 2 front end reported syntax error in FSP message.
10Over-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.
53Front end data not received.
129Unexpected LPS error (LPS recovered from this error).
172Reserved for future front end object errors.
256%SpO 2 back end reports beginning of packet missing.
257%SpO 2 back end reports packet start ID (SID) missing.
258%SpO 2 back end reports packet length error.
259%SpO 2 back end reports message length error.
260%SpO 2 back end reports packet contains unsupported key.
261%SpO 2 back end reports packet CRC error.
262%SpO 2 back end reports end of packet missing.
263%SpO 2 back end reports packet contains undefined key.
264%SpO 2 back end reports corrupted variable.
265%SpO 2 back end reports memory overflow.
266%SpO 2 back end reports bad pointer.
267%SpO 2 back end reports parameter value out-of-range.
268%SpO 2 back end reports reset detected.
269%SpO 2 back end reports unexpected value.
270%SpO 2 back end reports time-out.
271%SpO 2 back end reports not ready/not initialized.
272%SpO 2 back end reports double fault.
273%SpO 2 back end reports date out-of-range error.
274%SpO 2 back end reports incompatible software version.
275%SpO 2 back end reports incorrect registration number.
276%SpO 2 back end reports sensor read failure.
277%SpO 2 back end reports sensor signature verification fails.
278%SpO 2 back end reports warmed sensor temperature set point failure.
279%SpO 2 back end reports warmed sensor / %SpO 2 front end incompatible.
280%SpO 2 back end reports does not support feature required by sensor.
281%SpO 2 back end reports overflow/underflow.
282%SpO 2 back end reports sensor activation failure.
283%SpO 2 back end reports sensor write failure.
284ECG trigger error.
285Sensor trend not open.
286Sensor trend already open.
287Sensor trend data unavailable.
288All sensor trend data read.
289Incompatible private label.
512General failure of UIF Module generic post.
514Real time clock is non-operational.
515Application code is not present in the Flash.
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: No SpO2 / poor signal
- Fit a fresh, correct-size sensor on a well-perfused, still site.
- Swap the extension cable.
- Confirm the signal-quality / pleth indicator improves.
- Test the monitor with an SpO2 simulator.
- Replace the sensor / cable or refer the module if the simulator also fails.
Symptom: Accuracy / alarm concern
- Compare SpO2 to a co-oximeter blood gas where clinically indicated.
- Try a known-good sensor.
- Verify against an SpO2 simulator at several saturations.
- Test the audible alarm at the set volume.
- Refer the monitor for module / audio service if it fails the simulator or alarm test.
Technical Specs
- Height
- 3.3 in
- Length
- 6.8 in
- Pulse Rate Range
- 20-250 BPM
- Weight
- 5.7 lbs
- Operating Life
- 7 hr
- SpO2 Range
- 1-100%
- Width
- 10.4 in
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- ICU / CCU
- Emergency Department
- OR / PACU
- General med-surg floors
- Step-down units
- Telemetry units
Documents & Manuals
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