Does anyone have access to the schematics and boardview for the NB6371A board?
People were talking about on [URL="https://hnfix.vn/asus-zenbook-14x-oled-q410-nb6371a_mb_v3.t3748/"]this site[/URL] but they don't have it there yet.
Thanks so much!Does anyone have access to the schematics and boardview for the NB6371A board?
People were talking about on [URL="https://hnfix.vn/asus-zenbook-14x-oled-q410-nb6371a_mb_v3.t3748/"]this site[/URL] but they don't have it there yet.
Thanks so much!Does anyone have access to the schematics and boardview
Flippers McCoy
Tinkerer
Last Activity: 03-10-2025, 03:07 PM
Joined: 03-07-2018
Location: Durham, NC
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Asus Zenbook Q420V - NB6371A-MB-V3 Schematics & Boardview
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Re: Macbook pro 2012 820-3115-B Greenlight no Power on
I believe PP3V3_S5 is your immediate problem, I would recommend checking that out before any S4 or lower rails.
Is it shorted to ground?
My computer with my schematics is not available right now so I can't tell you which pins on which components to check out, but I'd check to see if PP3V3_S5 is shorted to ground. If it's not shorted to ground, find the IC that creates it and see why it's not doing its job -
Re: 820-00138-A Not outputting PPVOUT_S0_LCDBKLT
Yes, LCD_HPD does come from the LCD panel.
With that in mind, make sure you're doing all this testing with the LCD panel plugged in!
Q2010 is probably not dead, although it could be. I believe that DP_IG_A_HPD_L needs to be 0v to turn the backlight on. LCD_HPD needs to be higher than 0v to allow Q2010 to work properly (short DP_IG_A_HPD_L to ground).
So the question now is why is LCD_HPD 0v?
If you're testing with the LCD panel plugged in there must be a short to...Leave a comment:
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Re: 820-00138-A Not outputting PPVOUT_S0_LCDBKLT
What are you getting on pin 17 of U7701?Leave a comment:
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Re: 820-00138-A Not outputting PPVOUT_S0_LCDBKLT
Haha, it was so long ago I've got no clue at this point.
What's your board number? I can see if I can help out
...
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Re: 820-3476 MacBook Pro will not charge or run off the battery
This was a while ago so I'm a little hazy as to the details, but as far as I can remember the computer just started magically working again after being left in the shop overnight. You win some and you lose some I guess!...Leave a comment:
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Need Schematics for 1st Gen iPod M8541
I have a 1st Gen iPod model# M8541 with D207 burned up. Does anyone have a schematic?
Thanks a bunch! -
Re: MBP 820-2879B Board view vs actual board
This isn't immediately relevant, but I figured I'd clear this up for future reference
The fact that the boardview shows that there are "components" there does not necessarily mean that there will be components on the board. If the schematics shows something there, it guarantees that there will be solder pads, but not necessarily components. If you see a spot on the board where the boardview says there is a component but there isn't on your board, look up the part # (in this case U5101) in the schematic PDF. When I pulled...Leave a comment:
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Re: Macbook air 2011 BRD
Here are .brd files for both the 11" and 13" mid 2011 Airs, hopefully they're what you're looking for!...
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Re: Motherboard schematics archive?
I have a fair number of Apple schematics and boardviews I have organized on my computer, if I get a username and password I could upload them for everyone to use
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Re: 820-00138-A Not outputting PPVOUT_S0_LCDBKLT
Thanks for the tip on the IC, I'll remember that for next time
D7701 doesn't get continuity to ground on either side.
Q7701 has no shorts between source, drain, or gate.
BKL_FB doesn't get continuity to PPVOUT_S0_LCDBKLT, and pin 21 gets continuity to both resistors and obviously not to PPVOUT_S0_LCDBKLT.
Pins 9 and 10 both get continuity to their respective sides of R7700.
R7740 seems fine, no continuity to ground and is not creating an open circuit.
I just learned that there...Leave a comment:
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Re: 820-00138-A Not outputting PPVOUT_S0_LCDBKLT
BumpLeave a comment:
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Re: 820-3437-B loud fan & hot U3900
Just for closure, I'm calling it a day on this job. Going to use the board as a donor board, should I need one.
Thanks for the help, SMDFlea, much appreciated
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Re: 820-00165-A Missing PP5V_S4RS3 and PP3V3_S4SW_SNS
Gotcha, gotcha, thanks
When I plug it in while reading PM_SLP_S4_L, it goes up to 1mV, then back down to .5mV where it stays, I don't think that counts as a spike?
How would I test the RTC generator if I have an o-scope? I got the datasheet for U1900, but I wasn't sure which pin to test for what at. I may be able to get my hands on an o-scope briefly at my university, but I wouldn't have a ton of time to hang out, I'd have to know what to look for before sitting down with it...Leave a comment:
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Re: 820-00138-A Not outputting PPVOUT_S0_LCDBKLT
Bump
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Re: 820-00165-A Missing PP5V_S4RS3 and PP3V3_S4SW_SNS
That's what I thought, but I never saw it put explicitly like that, thank you
PM_RSMRST_L is 3.29V. Is that supposed to be low in order to get PM_SLP_S4_L?
I also get 3.33V on pin 2 of U8130 and 3.29V-3.3V on pin 4
PS: How can I tell which power ok signal is for which rail?...Leave a comment:
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Re: 820-00165-A Missing PP5V_S4RS3 and PP3V3_S4SW_SNS
If it's the SMC I'll have to set it aside for another day.
I did a little more research, and it looks like in order to get PM_SLP_S4_L, you need PCH_PWROK, and to have PCH_PWROK you need PM_S0_PGOOD. That comes from U1950 on page 17. I checked on it and it has power coming in on pin 8, but pins 1 and 2 are both 0V, so it's not creating PM_S0_PGOOD. I looked into where ALL_SYS_PWRGD and CPUVR_PGOOD_R come from, but I quickly got lost.
I used this [url=https://www.youtube.com/watch?v=-ON2dWlYUQA]Rossmann video[/url]...Leave a comment:
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Re: 820-00165-A Missing PP5V_S4RS3 and PP3V3_S4SW_SNS
Okay, so I discovered that all three of these rails are shorted to ground:
PM_SLP_S5_L
PM_SLP_S4_L
PM_SLP_S3_L
Perhaps a bad SMC?
None of the other resistors in that area of page 13 are having problems like thisLeave a comment:
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Re: 820-00165-A Missing PP5V_S4RS3 and PP3V3_S4SW_SNS
Both Q2090 and U8170 don't exist, they seemsto be part of a diagnostic circuit for test boards. It looks like literally the only things that are real that PM_SLP_S5_L actually goes to are U5000, R1460, R8115, and U0500. I would try removing R1460 and R8115 one by one to see if either removes the short, but I don't see how either of them being shorted would cause these symptoms specificallyLeave a comment:
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Re: 820-00165-A Missing PP5V_S4RS3 and PP3V3_S4SW_SNS
Ah, so the opposite of what I thought then, good to know
I think I see what you were getting at, PM_SLP_S5_L is in the exact same boat as PM_SLP_S4_L with a short to ground only when the adapter is plugged in.
The only component that I can see that both these rails have in common is the CPU, and I would be loathe to think the CPU is at fault hereLeave a comment:
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