A7™ Service Manual 046-006272-00 1 - 65
Theory of Operation Ventilator Control and Drive
Anesthetic Ventilator Cooling Fan Interface, J7
Speaker Interface, J8
Battery Adaptation Board Interface, J9
Power Board Interface, J10
6 12V 12V Power Supply
7 RXD_CALIBRATE Calibration Serial Port Receive Signal
8 TXD_CALIBRATE Calibration Serial port Transmit Signal
9GND Ground
PIN NAME FUNCTION
1 12VA_3 12V Power Supply
2RSVD Reserved
3 FAN1_STATE Fan Status Signal
4GND Ground
PIN NAME FUNCTION
1Speak+ Speaker Positive End
2Speak- Speaker Negative End
PIN NAME FUNCTION
1BAT1+ Battery Voltage
2NTC1 Battery Internal Thermistor
3 BC1 Battery In-position Signal
4GND Ground
5BAT2+ Battery Voltage
6NTC2 Battery Internal thermistor
7 BC2 Battery In-position Signal
8GND Ground
PIN NAME FUNCTION
1 PLAM Buzzer Drive Signal (drives the buzzer directly)
2 RXD_PWR_BRD Power Board Serial Port (receives signal)
3 LOOP_SW Circuit Switch (reflects if the circuit is in position)
4 TXD_PWR_BRD Power Board Serial Port (transmits signal)
5 NC Power Board Cooling Fan Drive
6GND Ground
7 LED-BAT Battery Status Indicator Light Drive Output
8 LCD_EN Backlight Enable Signal
9 LED-AC AC Status Indicator Light Drive Output
10 LCD_BR Backlight Brightness Control Voltage
PIN NAME FUNCTION
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