As you can see on the pic , LED_BKLTEN is managed by two bat54a diodes
in common anode configuration.
Backlight works only without LCD_BACKEN_PCH_IR signal, this line has 25 Ohm (with or without the 104 resistor array), 0.7 V and is connected direct to pch.
If I remove the diode D4602 backlight go on (LED_BKLTEN get 3.3 v) and the pwm signal LED_BKLTCTL can change the brightness.
pch issue ? but if I leave it all like this what could happen?
in common anode configuration.
Backlight works only without LCD_BACKEN_PCH_IR signal, this line has 25 Ohm (with or without the 104 resistor array), 0.7 V and is connected direct to pch.
If I remove the diode D4602 backlight go on (LED_BKLTEN get 3.3 v) and the pwm signal LED_BKLTCTL can change the brightness.
pch issue ? but if I leave it all like this what could happen?
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