Mindray A9 Service Manual

7-22
Message
Priority
Cause
Solution
3. If the sensor displays a negative value
in step 2, remove the auxiliary output
assembly (refer to 8.1.2), remove the VE
box (refer to 8.29), and check whether
the silicone tube falls off from the
three-way valve assembly and circuit
adapter board.
4. If no sampling line falls off, replace
the sensor adapter board (refer to
11.1.16).
Pinsp Not
Achieved
Low
Pinsp does not reach the
preset value in pressure
mode.
Refer to 7.4.5.
Vt Not Achieved Low
The tidal volume does
not reach the preset
value in volume mode.
Refer to 7.4.4.
CO2 Absorber
Canister Not
Locked
High
The CO2 absorber
canister is not mounted.
1. Re-mount the CO2 absorber canister.
2. If the problem persists, replace the
switch on the CO2 absorber canister
(refer to 11.5.1).
4. If the problem persists, replace the
monitoring and controlling assembly
(refer to 11.1.11).
O2 Sensor
Disconnected
Low
The O2 sensor is
disconnected.
1. Check whether the machine uses the
O2 cell.
2. Make sure that the cable is correctly
connected for the O2 sensor.
3. If the problem persists, replace the O2
sensor (refer to 11.5.1).
4. If the problem persists, replace the O2
sensor cable (refer to 11.1.12).
Replace O2 Sensor Med
The output voltage of the
O2 sensor is
continuously less than
the alarm threshold
when the O2 cell is
installed.
1. Check the output voltage of the O2
sensor in the calibration menu.
2. Calibrate the O2 sensor again (refer to
6.3.2).
3. If the problem persists, replace the O2
sensor (refer to 11.5.1).
4. Calibrate the O2 sensor again after the
sensor is replaced (refer to 6.3.2).
Calibrate O2
Sensor
Low
1. The O2 sensor
self-test fails.
2. The O2 concentration
exceeds 110% or ranges
from 5% to 15% for 4s.
1. Calibrate the O2 sensor again (refer to
6.3.2).
2. If the problem persists, replace the O2
sensor (refer to 11.5.1).
3. Calibrate the O2 sensor again after the
sensor is replaced (refer to 6.3.2).
Ventilator Comm
Stop
High
The CPU board fails to
communicate with the
VCM for 10s.
1. Restart the anesthesia machine.
2. If the status screen has a
communication stop alarm, or encounters
the black or blank screen error, rectify
the fault of the status screen first (refer to
7.2.1).
3. If the problem persists, re-plug the

Mindray A9 Specifications

General

Type	Anesthesia Workstation
Integrated Gas Analysis	Yes
Backup Battery	Yes
Operating Temperature	10°C to 40°C
Storage Temperature	-20°C to 55°C
Battery Type	Lithium-ion
Ventilation Modes	Volume Control, Pressure Control, SIMV, Manual Ventilation
Display	Touchscreen
Patient Monitoring	ECG, SpO2, NIBP, EtCO2, Temperature
Connectivity	Ethernet, USB
Portability	Mobile (with wheels)
Battery Life	Minimum 90 minutes (typical)
Altitude	Up to 3000 meters
Power Supply	100-240 VAC, 50/60 Hz
Charging Time	Approximately 4 hours
Storage	Internal storage for patient data and system logs
Supported Languages	Multiple languages
Certifications	CE, FDA