Mindray A7

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)