Mindray A3 - Page 74

Ventilator Control and Drive Theory of Operation
1 - 60 046-001141-00 A5/A3™ Service Manual
Debugging Power ON/OFF Interface, J12
Test Point Definition
C22 GND Ground
C23 NC No Connection
C24 NC No Connection
C25 GND Ground
C26 TP_PWR_CTRL Touch Pad Power Supply Control Signal
C27 RSVD Reserved
C28 RSVD Reserved
C29 RSVD Reserved
C30 RSVD Reserved
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
T14 5V 5V Power Supply 4.75~5.25
T15 3.3V 3.3V Power Supply 3.135~3.465
PIN NAME FUNCTION (Continued)