Mindray A7 Service Manual

A7™ Service Manual 046-006272-00 1 - 69
Theory of Operation Ventilator Control and Drive
Debugging Power ON/OFF Interface, J12
Test Point Definition
C20 TXD_AUX_BRD Auxiliary Ventilator Control Board Serial Port Transmit Signal
C21 RXD_AUX_BRD Auxiliary Ventilator Control Board Serial Port Receive Signal
C22 GND Ground
C23 RXD_KEY Serial Port Receive Signal of the Display Interface Board
C24 TXD_KEY Serial Port Transmit Signal of the Display Interface Board
C25 GND Ground
C26 TP_PWR_CTRL Touch Pad Power Supply Control Signal
C27 MAIN_ACGO_CTRL1 ACGO Valve Control Signal 1
C28 FAN_PWM1 Fan Control Signal
C29 FAN_PWM2 Fan Control Signal
C30 IN1 Backup Input Signal
C31 NC No Connection
C32 NC No Connection
PIN NAME FUNCTION
1 PCON+ Power ON/OFF Signal
2 PCON- Power ON/OFF Signal
DESIGNATOR NAME FUNCTION RANGE (Unit: V)
T1 BAT1 Lithium-ion Battery Voltage 1 Fully charged 12.6±5%
T2 BAT2 Lithium-ion Battery Voltage 2 Fully charged 12.6±5%
T3 LED_BAT Battery Indicator Light Drive Signal
With battery: 2.5~3.5;
Without battery: 0~0.4
T4 TXD_7024
Auxiliary Ventilator Control Board
Serial Port Transmit Signal
High level 2.4~5;
Low level 0~0.4
T5 TXD_TOUCH
Touch Screen Controller Serial Port
Transmit Signal
High level 2.4~5;
Low level 0~0.4
T6 RXD_7024
Auxiliary Ventilator Control Board
Serial Port Receive Signal
High level 2.4~5;
Low level 0~0.4
T7 RXD_TOUCH
Touch Screen Controller Serial Port
Receive Signal
High level 2.4~5;
Low level 0~0.4
T8 TXD_33209 VPM Serial Port Transmit Signal
High level 2.4~5;
Low level 0~0.4
T9 TXD_FLOW
Fresh Flow Sensor Board Serial Port
Transmit Signal
High level 2.4~5;
Low level 0~0.4
T10 RXD_33209 VPM Serial Port Receive Signal
High level 2.4~5;
Low level 0~0.4
T11 RXD_FLOW
Fresh Flow Sensor Board Serial Port
Receive Signal
High level 2.4~5;
Low level 0~0.4
T12 TXD_POWER
Power Board Serial Port Transmit
Signal
High level 2.4~5;
Low level 0~0.4
T13 RXD_POWER
Power Board Serial Port Receive
Signal
High level 2.4~5;
Low level 0~0.4
PIN NAME FUNCTION (Continued)

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