Mindray A3 - Ventilator UI; Display

A5/A3™ Service Manual 046-001141-00 1 - 41
Theory of Operation Ventilator UI
1.6 Ventilator UI
1.6.1 Display
1.6.1.1 Display Interface Board
FIGURE 1-35 Display Interface Board, Top View
FIGURE 1-36 Display Interface Board, Bottom View
Inverter interface, J1
PIN NAME FUNCTION
1 12V Inverter 12V Power Supply
2 12V Inverter 12V Power Supply
3GND Ground
4GND Ground
5 LCD_EN LCD Backlight Enable
6 LCD_BR LCD Backlight Brightness Control