Ventilator UI Theory of Operation
1 - 44 046-001141-00 A5/A3™ Service Manual
FIGURE 1-40 Screen Backlight Board, Bottom View
Screen Backlight Board Interface, J1
Screen Backlight Board Interface, J2
1.6.1.4 Warning Light Board
FIGURE 1-41 Warning Light Board, Top View
FIGURE 1-42 Warning Light Board, Bottom View
PIN NAME FUNCTION
1 VPP 12V Power Supply
2GND Ground
3 BCON Screen Backlight Enable Signal
4 DIMMING Screen Backlight Control Signal
5NC None Connection
PIN NAME FUNCTION
1GND Ground
2 PWM Screen Backlight Control PWM Signal
3 LED_EN Screen Backlight Enable Signal
4 VPP 12V Power Supply
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