Mindray WATO EX-55Pro, Service Manual

Page: 257 / 474

8-3
Message
Alarm
Priority
Cause Solution
3. An error occurs during the
self test of the CPU, RAM,
address line, watchdog, Flash,
O2/N2O/AIR proportional
valve, or FPGA. 3. If the problem persists, replace the
CPU board.
Flowmeter
Voltage Error
High
The sample values of the
DVDD, AVDD, or VC voltage
of the current flowmeter are
not in the normal range.
Restart the machine for a self test
again.
Aux Control
Module Self Test
Error
Aux Control
Module Self
Test: Time out
High
1. CPU, Flash or WTD error.
2. After the machine is
restarted, the CPU board
cannot communicate with the
Aux Control board.
1. Restart the anaesthesia machine.
2. Reconnect or replace the
communication line between the CPU
board and the Aux Control board.
3. If the problem persists, replace the
ventilation protection board.
4. If the problem persists, replace the
CPU board.
Ventilator Self
Test Error
Ventilator Self
Test: Time out
High
1. CPU, TIMER, RAM, WTD,
EEPROM or AD error
2. After the machine is
restarted, the CPU board
cannot communicate with the
VCM board.
1. Restart the anaesthesia machine.
2. Reconnect or replace the
communication line between the CPU
board and the VCM board.
3. If the problem persists, replace the
VCM board.
4. If the problem persists, replace the
CPU board.
Ventilator
Voltage Error
High 5 V or 12 V voltage error
1. Restart the anaesthesia machine.
2. Measure the supply voltage of the
VCM board and check whether the
voltage meets the requirement.
3. If not, replace the power board or
cable.
4. If the problem persists, replace the
VCM board.
PEEP Valve
Failure
Medium
1. PEEP valve voltage error
2. PEEP valve pressure error
1. Check whether the accuracy of the
PEEP sensor is within the valid range.
On the [Maintenance] menu, calibrate
the sensor or replace VCM.
2. Test the voltage at the corresponding
testing point.
3. Check the installation of and
connection between the power cable