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L430: keyboard backlight

L430 and later, plus L530 and later series specific matters only
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jal2
Posts: 15
Joined: Mon Mar 21, 2011 9:56 am
Location: Berlin, Germany

L430: keyboard backlight

#1 Post by jal2 » Sat Aug 23, 2014 2:42 pm

Hi,

has anyone already tried to mod a L430 (or L530) for a working keyboard backlight? Would be nice in the absence of the Thinklight on these models.
Does anyone own the schematics of a L430/530 and is willing to share them? This would be really helpful!

Cheers,
jal2

jal2
Posts: 15
Joined: Mon Mar 21, 2011 9:56 am
Location: Berlin, Germany

Re: L430: keyboard backlight

#2 Post by jal2 » Tue Jun 02, 2015 4:27 pm

Meanwhile I've got the schematics of a L430. It seems like all pins necessary for the keyboard backlight are connected in the L430:

pin 21 - output from the kbd, LOW if BL available
pin 25 - PWM input in the kbd, LOW = off
pin 29 - 5V Vcc for BL, fused with 1.5A

So the lockout of keyboards with BL in the L430 seems to be inside the embedded controller firmware alone.

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