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Z500 (Intel) Brightness LED
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abs [ 27 июл 2024, 19:20 ]
Заголовок сообщения:  Z500 (Intel) Brightness LED
hi

The LED of the notebook was broken and we replaced the LED, but the LED light does not increase or decrease. Please guide me how to program the LED.
Of course, I have prepared the 40-pin flat cable and LED program direction conversion.

PartNumber LED Org : LP156WHU-TL-A1
PartNumber LED Changed : LP156WH3-TL-F1

bios LED LP156WHU-TL-A1:
Вложение:
LP156WHU-TL-A1.rar


thanks.
Pupkin [ 27 июл 2024, 21:27 ]
Заголовок сообщения:  Re: Z500 (Intel) Brightness LED
Hi
I think it's enough to just replace the LEDs and everything should work.
I think no need to program the LED.
May be you need OS drivers for driving LED light?
What is it means "LED program direction conversion"?
i001546 [ 27 июл 2024, 21:34 ]
Заголовок сообщения:  Re: Z500 (Intel) Brightness LED
Download and Install drivers NECESSARILY from official Lenovo site. For win10 use win8.1 driver.
P.s. you can adjust brightness in BIOS.
abs [ 28 июл 2024, 11:14 ]
Заголовок сообщения:  Re: Z500 (Intel) Brightness LED
hi

In the BIOS, the LED light does not increase or decrease.

I mean by "LED program direction conversion" :
Вложение:
LED Program Flat.jpg

thanks
i001546 [ 28 июл 2024, 11:49 ]
Заголовок сообщения:  Re: Z500 (Intel) Brightness LED
Is adjustment works on original screen? I dont think reprogram can fix a trouble.
abs [ 28 июл 2024, 14:19 ]
Заголовок сообщения:  Re: Z500 (Intel) Brightness LED
Yes, it works in the original
Pupkin [ 29 июл 2024, 21:01 ]
Заголовок сообщения:  Re: Z500 (Intel) Brightness LED
Hi
Check signal "BL PWM" (pin 35) at matrix LVDS connector by oscilloscope. PWM modulation must be changing then you chahging brightness.
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