Macbook 820-3536A Schematic / Board View

[mrtutz]

Hello All!

I am currently troubleshooting a Macbook, and the boardviews / schematics I have found online dont seem to match the board exactly. My logic board seems to be missing several components from the factory.

I am not getting 5V S4 out of U7501, but this board isn't fitted with R7501, R5410, U5410 etc.

Charger light goes green, then orange. I look to have most rails, it's just the 5V S4 and and below I'm missing.

Can anyone help with the right schematics / board view or give me a point in the right direction.

Thanks in advance

[mon2]

Re: Macbook 820-3536A Schematic / Board View

Are your files the same or different than the attached versions?

[mrtutz]

Re: Macbook 820-3536A Schematic / Board View

Thanks for responding mon2.

The files you attached look the same as what I'm working off, however there's components missing off the logic board, and I can't understand why. The board looks like it's been like that since it was manufactured.

Is it usual for Apple to change a board and not update the schematic?

Regards

[piernov]

Re: Macbook 820-3536A Schematic / Board View

Schematics/boardviews are correct.

R7501 has BOM option "SKIP_5V3V3:INAUDIBLE", which is not populated. As per the "BOM Groups" table, "SKIP_5V3V3:AUDIBLE" is populated instead.
R5410 has annotation "OMIT", "Short Rsense", meaning that there is no resistor on the board but the pad are shorted instead.
U5410 has BOM option "OTHERISNS" which is not populated on production board.

[mrtutz]

Re: Macbook 820-3536A Schematic / Board View

Thanks Piernov.

[firulilla]

Re: Macbook 820-3536A Schematic / Board View

thanks,,