Please share the schematic and boardview of NM-B521 if you have it.
Thank you.
Thank you.
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Re: Looking for schematic/boardview for nm-b521 (Lenovo X280)
Hi please
Someone can share a schematic for this mobo -
Re: Looking for schematic/boardview for nm-b521 (Lenovo X280)
schematic of nm-b521Comment
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Re: Looking for schematic/boardview for nm-b521 (Lenovo X280)
@Earnest,
This is weird. Why your schematic shows Skylake-DDR3, but NM-B521 should be Kabylake with DDR4?Comment
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Re: Looking for schematic/boardview for nm-b521 (Lenovo X280)
boardviewComment
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Re: Looking for schematic/boardview for nm-b521 (Lenovo X280)
its the correct board look at the silk screen on the boardview itself. It is a different rev than the production one though theres no testpads shown. heres jtag pinout quick reference i madeAttached Filesif you find these attachements useful please consider making a small donation to the site
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Re: Looking for schematic/boardview for nm-b521 (Lenovo X280)
My bad. I was looking for 2 different boards in 2 different topics and I thought this is the other one actually.
Thank you. Just need to get the schematic now.Comment
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thank youComment
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Thank you 👍🙌Comment
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Lenovo 3000 Series Schematic
Lenovo 3000 was a line of low-priced notebook and desktop computers designed by Lenovo Group targeting small businesses and individuals. It was replaced with the IdeaCentre and IdeaPad brands.
3000 C100 laptop with Braille keyboard
Lenovo 3000 C
C100, C200 - 15-inch XGA screen
Lenovo 3000 N
N100, N200 - 14.1-inch- and 15.4-inch- WXGA models
N500 - 15.4 inch screen.
Lenovo 3000 V
V100, V200 - 12.1-inch WXGA models
Lenovo 3000 G
G400, G410, G430, G450, G455, G510, G530, G550, and G560...10-04-2024, 06:05 AM -
Hello,
I am in search of a schematic or boardview for Lenovo Ideapad Flex 5 14ALC7.
No power and no charging LED with AC Adapter connected. AC Adapter is functioning at 19V, and also tried another Lenovo AC Adapter -- no charging LED still.
There is an active 19V from the USB-C port to the motherboard with AC Adapter connected, so the port is also fine. I am assuming there is a short on one of the power rails, but don't know where to start looking.
Any insight, schematic or boardview would be greatly appreciated.
Model: Lenovo Ideapad Flex 5 14ALC7... -
For Badcaps Readers, Please note that I am hopefully going to present this same message to Lenovo to see if they have any insight to the matter as well and figured to share the entirety here for clarification. The System is out of warranty as it is but does have the option to have it extended.
Model Information: T14 Gen 2 (Type 20XK, 20XL) Laptop (ThinkPad) - Type 20XK - Model 20XK0069US
Board: T14 Gen 2 (Type 20XK, 20XL) - Type 20XK.
System Hardware:
Processor: AMD Ryzen 7 PRO 5850U
Memory: 1x 16GB DDR4 3200 (Soldered on Board); 1x Crucial 32GB DDR4...09-08-2025, 10:46 PM -
Hello everyone,
OK, so here is my issue.
This Lenovo B470 motherboard I am troubleshooting died and I identified it is the discrete Nvidia graphics chip that has lost it's ways!
So I removed it and now I am trying to change this motherboard to use UMA graphics, but I am having an issue interpreting the attached diagram. I have a 10K resistor in at the R2013 position and another one at the R2012. R2010 and R2011 are empty.
The motherboard starts, the fan spins but no display. It turns off by itself. I restart it and it does start but stays on...08-12-2024, 02:01 PM -
Hello everybody,
I am asking for the boardview and schematic for a 2023 Lenovo Yoga 7
Manufacturer: Lenovo
Model Name: Yoga 7 14ARB7
Motherboard Part Number: JYG71 / JYG72 NM-E671
Couldn't find them online. If you know where to look, please tell me.
I know this was asked 2.5 years ago by user treewaver, but i'm asking because his post went unanswered.
I am trying to repair a friends laptop with a short on 3V.
Thank you all very much !10-31-2025, 05:59 PM
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