Lenovo Yoga 3 Pro 1370 - LCFC NM-A321

[naseee]

schematic

[naseee]

boardview

[naseee]

boardview

[mcplslg123]

Re: Lenovo YOGA 3 Pro 1370 +3VALW Missing Board NM-A321

Your problem is not charging ic as acok# will be pulled from +3VALW and since +3VALW is not available, there is no question of getting ACOK#. You need to probe your 3/5V regulator IC.

[sikocan]

Re: Lenovo YOGA 3 Pro 1370 +3VALW Missing Board NM-A321

No, the same very low I believe it was 0.2v or so, the resistor measures 96k ohms

[sikocan]

Re: Lenovo YOGA 3 Pro 1370 +3VALW Missing Board NM-A321

No, the same very low I believe it was 0.2v or so, the resistor measures 96k ohms

[mcplslg123]

Re: Lenovo YOGA 3 Pro 1370 +3VALW Missing Board NM-A321

Are you getting +3VALW on the other end of PR64??

[mcplslg123]

Re: Lenovo YOGA 3 Pro 1370 +3VALW Missing Board NM-A321

Are you getting +3VALW on the other end of PR64??

[sikocan]

schematic

[archiepenny]

Re: Lenovo Yoga 3 Pro 1370 - LCFC NM-A321

Hi, also looking the boardview file, did you get it, Archie

[pbl3]

Hi, does anyone have the schematics for all 3 boards for this laptop?
I managed to find the main board schematic on the web, but there are two side boards that play an important role in this laptop.

Boardview or any other resources would be greatly appreciated as well.

The boards are named:

AIUU2 NM-A321 - Main board
AIUU2 NS-A321 - Sub board (WiFi PCI, USB)
AIUU2 NS-A322 - I/O board (Power button / audio)

I am trying to diagnose complete power loss and I think there was something wrong with the keyboard backlight power source as well (dim when powered externally). There is a slight smell of burning, but I do not see anything burnt.