Philips M3921A, Руководство по обслуживанию

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Restoring Factory Settings
Power-up Defaults Menu And Diagnostic Mode 45
is pressed, the proportional valve opens
and bleeds off pressure at the rate of 3 ±1.5 mmHg/
s. It is useful to control the bleed rate to 3 mmHg/
second to facilitate certain AAMI SP10 tests. Any
time the bleed rate falls below 3 mmHg/second, the
valve opens and remains at maximum as long as
the button is pressed.
• Open Valve (A1): While the Heart Rate Tone
VOLUME
button
is pressed, the valve opens and remains at
maximum as long as the button is pressed.
• Open Both Valves (A3): For as long as the Heart Rate Tone
VOLUME
button is pressed, the safety valve and
proportional valve opens and remains at maximum
as long as the button is pressed.
• Offset Adjust: A momentary press of the
CONTRAST ADJUST
button invokes the
zero calibration
routine that is performed immediately prior to each
blood pressure measurement. This routine looks at
the pressure in the system, and if the pressure is
non-zero, an offset is applied which causes the
system pressure to display as
zero .
When in the NiBP Test screen, the Return item is always highlighted; a press of the
wheel returns the user to the Diagnostic Menu. Rotating the wheel while in the NiBP
Test screen has no effect.
Restoring Factory Settings
Caution In addition to restoring factory defaults, this procedure clears the
contents of trend memory.
Note
Read this procedure completely before performing the first step.
The following technique can be used to restore the monitor’s power-up default