LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

[Pferd5]

I'm looking obviously for the schematic and or better boardview.

At the very least I need at least some pictures from one area but documents would be way much better.

The needed area with a high resolution picture I would need is from the back of the CPU where PU901 is located as marked in the picture. The mosfet meltet down and it was impossible the read which IC this was. I need the info.

[Pferd5]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

[anshad]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

As far as i know, schematics/boardview not available as of this date. I can only find BIOS dumps even on paid groups.

The damage seems to be severe judjing from the photo. If the MOSFET which burned is part of a PWM step down circuit, this kind of failure can cause damage to the chipset

[Pferd5]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

Yeah there is a hole in the board under the destroyed Mosfet.
There were some kind of vias within the board layers? like 3 PINS directly under the mosfet but this was another layer. The 3 (somewhat) Pins beneath the Mosfet belong to some other rail. I put UV curing stuff to fill the whole. Only the part of the mosfet from drain to 1R0 is shorted (gate seems to work) I would just like to try if I can get this fixed. If not... not soo bad, but I like the challenge. But currently I just need info about the area to continue :/ - which mosfet, which big and small cap was it any maybe the chip on the left which only says "CGP"?
Goolgle advanced search and ebay pictures are all not high-res enough.

Unforunatly I have no Idea for which part this circut is used for. I only see that the board (at least) tries to boot up. (Seems like a good sign)

[Kwisatz Haderach]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

PQ905 is AON7934

[Pferd5]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

Thank you sooo much!

[Pferd5]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

Hey, as I didn't expected an answer anytime soon (I'm very surprised and thankfull) I haven't made clear what additional Information I would need.
So some of the caps are totaly burned and (may?) need to be replaced (I may work without?) But I don't have the neccessary values. Or could I also solder bigger caps on the board?
I'm also thinking of soldering the Mosfet Dead-Bug style? Or does someone of you have another Idea? This would be my somewhat biggest challenge so far.
As because of the Mosfet is little more complex with additional solder pads for S1/D2 and D1. Nothing else seems shorted except the Area I marked which (I guess) is fine if I work around that part.

current situation:


Info:



questions:

[Kwisatz Haderach]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

Some measures ...

[Pferd5]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

I can only say thank you

[Pferd5]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

I will reply as soon as I got the parts and the repair attempt.

[Pferd5]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

I need a known working device or schematic and boardview.
There are currently to many unclarified issues.

[adis]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

Hello
i have a light problem on the screen
screen ok
?

[rediii]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

hello, is it mandatory to connect both btb-pcbs (lan/dp, usb) to start the mainboard?

[rediii]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

hello, is it mandatory to connect both btb-pcbs (lan/dp, usb) to start the mainboard?

answered myself... it is!

[lazaro.089]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

answered myself... it is!

Really? Why would it be?

I'm currently testing the same motherboard with no 19V propagation. (Open Circuit)

[hunglaptop1102]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

Hello everybody
does anyone have a boardview??
i need it or can someone help me the code of PU501

[Fraheeba]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

Hello everybody
does anyone have a boardview??
i need it or can someone help me the code of PU501

Hi,

I don't have the boardview, but here's some info on PU501:

I have two of these mainboards, one has a strange code on it. Google-ing the other leads to a memory voltage buck controller G5616 which seems reasonable to me:

https://cdn.badcaps-static.com/pdfs/...6218c2ffb1.pdf

[nikko404]

Re: LENOVO L560 AILL1 / L2 LA-C421P Schematic Boardview?

Hi,

J7 = 3G is a RT8207M, to find out what is those are related, type in google ex: J7 = qfn20, go to image section you will find chip with same code, for your case J7 = " 3G " is date code dont care about it. Another exemple, 5E = 1G, type in google 5G = qfn20, and you will find in image section, it is a RT8248A , Sorry for my bad english :p

[Sushi1808]

Re: LA-C421P BQ24780S no ACDRV

Schematics diagram for Lenovo ThinkPad L560 - AILL1/L2 LA-C421P REV1.0 is now available, hope someone finds it useful.

[Fraheeba]

Re: LA-C421P BQ24780S no ACDRV

Thank you very much!