Mindray A3 - Page 223

A5/A3™ Service Manual 046-001141-00 4 - 37
Calibration System Calibration
[00 00 00 08] is
displayed.
Zero point error occurs to the inspiratory
flow sensor. (zero point AD is greater than
or equal to 2000, or is less than 0)
1. Check if fresh gas is turned off.
2. Check if the inspiratory valve has
closed the flow?in the valve
diagnostic tools, when valve closing
DA is zero, AD of the ventilator
sensor is basically unchanged when
disconnecting and connecting the
gas supply (the change is not more
than 1% of the reading), indicating
that the then valve is indeed fully
closed.
3. Check the zero point.
4. Replace the board.
[00 00 00 10] is
displayed.
Zero point error occurs to the expiratory
flow sensor. (zero point AD is greater than
or equal to 2000, or is less than 0)
1. Check if fresh gas is turned off.
2. Check if the inspiratory valve has
closed the flow?in the valve
diagnostic tools, when valve closing
DA is zero, AD of the ventilator
sensor is basically unchanged when
disconnecting and connecting the
gas supply (the change is not more
than 1% of the reading), indicating
that the then valve is indeed fully
closed..
3. Check the zero point.
4. Replace the board.
[00 00 00 20] is
displayed.
Zero point error occurs to the internal
flow sensor. (zero point AD is greater than
or equal to 2000, or is less than 0)
1. Check the zero point.
2. Check if the inspiratory valve has
closed the flow?in the valve
diagnostic tools, when valve closing
DA is zero, AD of the ventilator
sensor is basically unchanged when
disconnecting and connecting the
gas supply (the change is not more
than 1% of the reading), indicating
that the then valve is indeed fully
closed.
3. Replace the board.
Failure description Possible cause Recommended action