Mindray Datascope AS 3000, Service Manual

Page: 28 / 180

AS3000™ Service Manual 0070-10-0683 1 - 15
Theory of Operation Ventilator Control and Drive
O
2
Sensor Input, S4
PIN NAME FUNCTION
1. O
2
- O
2
Sensor Input -
2. O
2
- O
2
Sensor Input -
3. O
2
+ O
2
Sensor Input +
4. O
2
+ O
2
Sensor Input +
DC Power Input, J7
PIN NAME FUNCTION
1. GND Power Ground
2. +5V Controller Logic Power
3. P12V Power 12V
4. PWBUS Power Bus 24V
5. GND Analog Ground
6. A12V Analog 12V
7. 5V/4.8V Power 5V/4.8V
Power Control, J20
PIN NAME FUNCTION
1. GND Ground
2. /PWON Power On Enable, Low active
3. PWEN Power On Enable, High active
4. 5VAUX 5V Auxiliary
5. DC_M AC/DC Monitor signal
6. PWBUS Power bus
7. BAT_M Battery Monitor signal
8. APE Auxiliary Power Enable
9. CHAR_SIGNAL Charge Status, No connection
10. /MUTE Mute, No connection
Signals and Power to Keyboard, J5
PIN NAME FUNCTION
1. ENPW Power Enable, High active
2. /PWON / Power on Enable, Low active
3. 5VAUX 5V Auxiliary
4. APE Auxiliary Power Enable
5. GND Ground
6. TTLRX TTL Receive
7. 232ARX RS232A Receive
8. 232BRX RS232B Receive
9. GND Ground