Mindray A9 Service Manual

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6. The screen shown below is displayed upon successful zeroing. Select Done to exit the
zeroing screen.
6.3.4.3 Zeroing Failure Troubleshooting
If the zeroing fails, perform the following steps to locate and rectify the fault.
1. Disconnect the gas supplies, exhaust the gas inside the machine, and perform zeroing again.
2. If the zeroing is successful, it is concluded that the previous zeroing failure is caused by a
mechanical failure in the pilot valve or faults in the proportional valves. Replace the pilot
valve assembly and proportional valve assemblies.
3. If the zeroing still fails, it is concluded that the cause is the fault in the Sensirion differential
pressure sensors or the high-flow O2 supply board. Replace the Sensirion differential
pressure sensor assemblies and high-flow O2 supply board.

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