GE Corometrics 250cx Series, Руководство по обслуживанию

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Revision C 250cx Series Maternal/Fetal Monitor 4-17
2036947-001
Maintenance: Self-Test Routine
affect the overall system performance. Therefore, between factory service visits it is
necessary that the proper operation of each monitor be verified by performing the
functional checkout procedure described in this section. This procedure should be
completed prior to initially placing the monitor on a patient, when monitor
performance needs to be verified, on a semi-annual basis, or more frequently as
dictated by your equipment maintenance and management policies.
Equipment Required
The following items are necessary for performing any of the tests in this procedure:
„
Corometrics Model 325 Simulator and corresponding line cord
„ 250cx Series Monitor interconnect cables
„
Ultrasound Transducers (x2)
„ Tocotransducer
„
Strain Gauge Transducer
Self-Test Routine
The 250cx Series Monitor contains test routines which verify the unit’s calibration
and internal circuitry. These routines are initiated by depressing the front panel
Test
button. The test results are printed on the strip chart recorder paper, verifying the
integrity of the unit.
It is recommended practice to initiate the self-test feature at the beginning of each
monitoring session.
1. Check the Voltage Selection switch on the rear panel of the 250cx Series Monitor
and ensure it matches the line voltage of the connector to be used. Connect the
detachable line cord to the rear panel power entry module; plug the other end into
a hospital grade, grounded wall outlet of appropriate voltage.
2. Place the front panel Power switch in the on (
I
) position. When the power is
first turned on, verify that two tones are emitted from the rear panel speaker and
the green power on indicator is lit.
3. Depress the front panel
Test
button and verify the following:
‹ All display pixels illuminate for 1 second and then all are extinguished for
1 second. Afterwards, a horizontal line moves across the screen from top to
bottom, followed by a vertical line moving from left to right.
‹
The yellow
Record
indicator illuminates.
NOTE:
The message TEST: ARE ALL DOTS PRINTED? prints followed by two
lines which should appear continuous. Discontinuous lines may be an
indication of damaged printhead elements or dust and debris accumulated
under the printhead if gaps occur in the same place on both lines.
Simulated trends of 30 and 240 bpm (or 50 and 210 bpm, depending on
the paper installed) are printed on the top grid. Simulated pressure trends
at 0 and 100 mmHg are printed on the bottom grid.
‹
After the recorder test above, the display returns to the main screen; then
the software generates a 120 bpm rate in the FHR1 area and a 180 bpm rate