Mindray A8 - Page 247

7-23
Message
Priority
Cause
Solution
VCM (refer to 8.6), and reconnect the
cable between the backplane and display
(refer to 8.1.7).
4. If the problem persists, replace the
monitoring and controlling assembly
(refer to 11.1.11).
O2 Supply Failure High
The O2 supply pressure
is low.
1. Check whether gas is supplied
normally. The gas supply pressure on the
O2 pipeline should be within the range
of 280- 600kPa (40-87PSI), and the
cylinder pressure should be within the
range of 6.9-20.0MPa (1000-2900PSI).
Check the pressures displayed on the
pressure gauge and status screen.
2. If the pressure gauge and electronic
pressure monitoring result indicate that
the gas supply is sufficient, replace the
supply pressure switch (refer to 11.2.1).
Drive Gas Pressure
Low
High
The drive gas pressure is
low.
1. Check whether gas is supplied
normally. The gas supply pressure on the
O2 pipeline should be within the range
of 280- 600kPa (40-87PSI), and the
cylinder pressure should be within the
range of 6.9-20.0MPa (1000-2900PSI).
Check the pressures displayed on the
pressure gauge and status screen.
2. If the gas supply connection is normal,
replace the drive gas assembly (refer to
11.1.17).
ACGO 3-way
Valve Failure
Med
The selection switch
status of the ACGO
channel is inconsistent
with the 3-way valve
control status.
1. Replace the 3-way valve (refer to
11.1.16).
2. If the problem persists, replace the
VCM (refer to 11.1.11).
Auto Ventilation
Disabled
Low
The machine fails the
power-on self-test, and
only manual ventilation
is applicable.
Clear the power-on self-test alarm by
referring to 7.3.1.
Auto Ventilation
Disabled - Leak
Test Failed
Low
The automatic circuit
leak test fails.
Handle the leak test failure by referring
to 7.2.3.
Aux Control
Module Voltage
Error
Low
3.3 V and 5 V supply
voltages of the
protective module are
abnormal.
1. Restart the anesthesia machine.
2. If the power board has a voltage error
alarm, clear this alarm (refer to 7.3.3).
3. Select Setup > Service > Data
Monitors > VPM and check whether the
voltages in the A/D channel fall within
the range specified in the A/D channel
table.
4. If the power supply voltage is out of
the normal range, replace the monitoring
and controlling assembly (refer to