Mindray A5 Service Manual

Technical Alarms Check Repair and Troubleshooting
5 - 4 046-001141-00 A5/A3™ Service Manual
Ventilator Voltage Error High 5V or 12V voltage error
1. Restart the machine.
2. Measure the input voltage (voltage on the power cable) of
the ventilator control module to see if it is within
specifications. Check if the cable is defective.
3. If the input voltage is out of specification, replace the
power board or cable.
4. If the problem persists, replace the ventilator control board.
PEEP Valve Failure Med
1. PEEP valve voltage error.
2. PEEP valve pressure error.
1. Check if the pressure sensor on the PEEP circuit is within
specifications. Perform pressure sensor calibration in the
service menu or replace the sensor on the PEEP circuit when
the pressure error.
2. Measure the voltage at the corresponding test point
3. Check the connection between power supply and
expiratory valve assembly
4. Replace the Ventilator Control Board when necessary.
5. Replace the expiratory valve assembly.
6. Replace the power board when necessary
Insp Valve Failure Med
1. Insp valve voltage error.
2. Insp valve flow error.
1. Check if the Inspiratory flow sensor is within specifications.
Perform flow sensor calibration in Service menu or replace
the flow sensor when flow error occurs.
2. Measure the voltage at the corresponding test point
3. Check the connection between power supply and
expiratory valve assembly
4. Replace the Ventilator Control Board when necessary.
5. Replace the expiratory valve assembly.
6. Replace the power board when necessary
PEEP Safety Valve
Failure
Med
PEEP safety valve voltage
error.
1. Measure the voltage at the corresponding test point
2. Check the connection between power supply and
expiratory valve assembly
3. Replace the Ventilator Control Board when necessary.
4. Replace the expiratory valve assembly.
5. Replace the power board when necessary
Flow Sensor Failure Low
Ventilator flow is out of
range.
1. Check if the zero point of the flow sensor is within
specifications.
2. Check if the measurement performed by the flow sensor is
within specifications.
3. Replace the flow sensor and perform calibration.
4. Replace the ventilator control board and perform
calibration.
Calibrate Flow Sensor
and Insp Valve
Low
1.Cal. Table isn't found in
EEPROM.
2.Checksum of Cal. Table
don't match.
Perform service calibration. Refer to section NOTE: If
measurement deviations are not corrected after multiple
flow sensor calibrations, the user is recommended to replace
the flow sensor and then perform calibration. If the problem
persists, factory maintenance is necessary..
Calibrate Pressure
Sensor and PEEP Valve
Low
1.Cal. Table isn't found in
EEPROM.
2.Checksum of Cal. Table
don't match.
Perform service calibration. Refer to section 4.3.4 Pressure
Calibration (Service).
Calibrate O2 Sensor Low
1.Cal. Table isn't found in
EEPROM.
2.Checksum of Cal. Table
don't match.
1. Calibrate the O2 sensor again.
2. Replace the O2 sensor.
Ventilator Initialization
Error
Ventilator Initialization:
Time out
High
After power on, the CPU
board can't send the
parameter settings to
ventilator board.
1. Restart the machine.
2. Re-plug or replace the communication cable between the
CPU Board and ventilator control board.
3. If the problem persists, replace the ventilator control board.
4. If the problem persists, replace the CPU Board.
Message Priority Cause Solution

Mindray A5 Specifications

General

Brand	Mindray
Model	A5
Category	Medical Equipment
Language	English