Lenovo Thinkpad T14 Gen 1 (NM-C931)

[nochkin]

Hey there.
Looking for the schematic and boardview for NM-C931.
Please share. Thank you.

[Ruslan2017]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

I only have LENOVO T14 schematics

don't know if this what you need ...

Regards, Ruslan

[nochkin]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

That would work. Please share. Thank you.
The file you attached is a different schematic (NM-C631, but I'm looking for NM-C931 or T14).

[rive.hafintosh]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

I also need this schematic if anyone has it please do share.

[احمد الخشاشنة]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

I also need this schematic if anyone has it please do share.

Welcome

[suport89]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

HI
I looking for schmatic NM-C931, please share it

[couillu76]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

hi this the boardview for x390,t490s, t495s,x13,t14s, t15gen1 there are all same boards
https://www.badcaps.net/forum/showth...highlight=t490
enjoy

[diego2019]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

[humanplayer2]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

Can anyone point out the fuse(s) related to backlight on this board?

I've e-waste rescued a T14 Gen 1 with a NM-C931 mainboard and no backlight. I'm hoping I could bridge a fuse to get the backlight back.

[nochkin]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

Why do you think the fuse is the issue? There are many other components related to this.
Not to mention that if the fuse is gone, that usually indicates another more serious issue and bridging a fuse will make it worse.
Most likely it's the screen itself.

[humanplayer2]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

I may be totally wrong of course, but the reason I thought it was a fuse is because it seems a pretty common issue WITH ThinkPads that people forget to disconnect the internal battery before disconnecting the panel, which results in a blown backlight fuse. And this light by bridging the blown fuse.

I've had another machine like that, where the image on the display was visible using a flash light. The same is the case here (with a broken screen on top): I see pixel lines changing on the panel when applying a flashlight.

[nochkin]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

That's so rare in my experience. I never saw it so far. Most of the time it's burnt backlight LEDs or something like that. On older CCFL devices I get burnt inverter board (CCFL boards do have a fuse normally).
I would check the voltage coming to LEDs to see if it's even need to bother with the fuse or you need to replace screen/LEDs.

[Vesko356]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

Enough off-topic guys!

.

[nochkin]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

Enough off-topic guys!

Good point. We are waiting for the on-topic message for over a year, so at least some excitement :-)

[humanplayer2]

Re: Lenovo Thinkpad T14 Gen 1 (NM-C931)

Ok, duly noted, @Vesko356. @nochkin, thank you, I'll start somewhere else =)