Mindray A7 Service Manual

A7™ Service Manual 046-006272-00 1 - 73
Theory of Operation Ventilator Control and Drive
VT Calibration Communication Interface, J7
Three-way Valve Control Interface, J6
VPM Communication Interface, J5
O2 Cell Detection Interface, J12
Test Point Definition
PIN NAME FUNCTION
1 TXD_CALIBRATE Calibration Serial Port Transmit Signal
2 RXD_CALIBRATE Calibration Serial Port Receive Signal
3GND Ground
4 12V 12V Power Supply
PIN NAME FUNCTION
1 12V Three-way Valve Power Supply
2 SOLENOID_VALVE1 Three-way Valve Control 1
3 12V Three-way Valve Power Supply
4 SOLENOID_VALVE2 Three-way Valve Control 2
5 12V Three-way Valve Power Supply
6 SOLENOID_VALVE3 Three-way Valve Control 3
7 12V Three-way Valve Power Supply
8 SOLENOID_VALVE4 Three-way Valve Control 4
PIN NAME FUNCTION
1 TXD_AUX_BRD VPM Serial Port Transmit Signal
2 RXD_AUX_BRD VPM Serial Port Receive Signal
3GND Ground
4 12V 12V Power Supply
PIN NAME FUNCTION
1O2+ O2 Cell +
2O2- O2 Cell -
3GND Ground
DESIGNATOR NAME FUNCTION RANGE (unit: V)
T1 O2 O2 Concentration Voltage 0~3.5
T2 PP PEEP Pressure 0.2~4.5
T3 PW Airway Pressure 0.2~4.5
T6 FM Ventilator Flow Detection 0.21~5.25
T8 FE Expiratory Flow Value 0.2~5.5
T9 VAJF3 Offset Voltage 0.602~0.622
T10 10V5 10.5V 10.25~10.75

Mindray A7 Specifications

General

Type	Anesthesia Workstation
Brand	Mindray
Model	A7
Display	15-inch color touchscreen
Oxygen Flush	Yes
Gas Inlets	O2, N2O, Air
Ventilation Modes	SIMV, PSV
Breathing System	Integrated
Gas Monitoring	O2, CO2, N2O
Monitoring Parameters	FiO2
CO2 Monitoring	Mainstream or Sidestream
Power Supply	100-240 V, 50/60 Hz