Covidien Newport e360, Service Manual

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Troubleshooting
3-4 Service Manual
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Control ROM failure Control ROM Failed High Read-only memory that stores the code of the
control processor has an incorrect checksum.
Control task continuity failure Control Tasks Failed High Software tasks of the control processor have
operated out of sequence.
Dual RAM failure Dual RAM Failed High Random access memory that is shared between
the control and monitor processors is damaged.
Monitor communications
failure Control uP Failed High The control processor does not respond to a
request from the monitor processor. The control
processor is not running.
Monitor CPU failure Monitor CPU Failed High The monitor processor on the main PCB is bad.
Monitor exception failure C Internal System High The monitor processor has detected an abnormal
operation, such as illegal instruction or division by
zero, that was generated by the monitor software.
Monitor RAM failure Monitor RAM Failed High Random access memory that is used by the
monitor processor on the main PCB is damaged.
Monitor ROM failure Monitor ROM Failed High Read-only memory that stores the code of the
monitor processor has an incorrect checksum.
Monitor task continuity failure Mon Task Failed High Software tasks of the monitor processor have
operated out of sequence.
Power failure Power Failure High DC power out of tolerance. Check +12 VDC, –12
VDC, and +5 VDC. (The ventilator may have been
powered by internal battery until it was depleted
and a device alert resulted.)
Pressure sensor error Pressure Sensor Error High Loss of pressure to machine 1 or machine 2
pressure transducers. (Can be caused by
disconnected tube, failure of rezero solenoid, or a
faulty pressure transducer.)
Table 3-2. Device Alert Messages (Continued)
Device alert violation Violation message Priority level Definitions