MacBook Pro 13-inch A1278 (2009–2012) (820-2327) Boardview & Schematic
Interactive boardview for the MacBook Pro 13-inch A1278 (2009–2012) (820-2327) logic board, mapped straight from the manufacturer board file. Search a designator or a net name and the viewer will show you exactly where the part sits, which side it is on, and what every pad connects to.
Interactive boardview
Click a component · scroll to zoom · drag to panAbout this MacBook Pro 13-inch A1278 (2009–2012) (820-2327) board
This page is generated from the board file itself, so the map above is the manufacturer layout rather than a redrawing of it. The board carries 2,716 components and 1,840 named nets across 8,050 pads, with 1,214 test and probe points marked in amber for when you want to measure rather than desolder. About 99% of the components are surface-mount, so the top and bottom side filter is usually the difference between finding a part in one pass and searching both faces.
This is the logic board fitted to the A1278 (Mid 2009 – Mid 2012), covering the 2009–2012 production run. Check the board number before you order parts: several of these machines shipped with more than one board revision, and a component taken off the wrong revision frequently has the same designator and a different footprint.
Frequently asked about the MacBook Pro 13-inch A1278 (2009–2012) (820-2327)
What board number is the MacBook Pro 13-inch A1278 (2009–2012) (820-2327)?
The MacBook Pro 13-inch A1278 (2009–2012) (820-2327) uses logic board 820-2327, the board fitted to the A1278. There is more than one revision of some of these boards, so check the number on the board itself against the one on this page before you order a part — a component from a different revision will often not fit or will not reference the same nets.
How many components and nets are on the MacBook Pro 13-inch A1278 (2009–2012) (820-2327)?
The board file records 2,716 components (2,695 surface-mount, 21 through-hole), 1,840 named nets and 8,050 pads, plus 1,214 test and probe points. The board measures 168.5 × 120.4 mm. Roughly 99% of the parts are surface-mount, which is why the top and bottom side filter matters — a lot of this board is only reachable from one face.
How do I use this MacBook Pro 13-inch A1278 (2009–2012) (820-2327) boardview?
Type a designator such as a component reference, or a net name, into the search box above. A net name takes priority and highlights every pad on that net across the whole board. Clicking a component outlines it in white and lists every pad it has with the net each one belongs to; clicking one of those nets jumps the highlight to the whole rail. Use the side filter to isolate the top or bottom face, and the designator toggle to hide the reference text when you are zoomed out.
Is a schematic available for the MacBook Pro 13-inch A1278 (2009–2012) (820-2327)?
Not yet. The boardview is complete and interactive on this page, and the board file itself is downloadable, but we have not got a verified schematic for this revision. We would rather show the gap than link to a schematic that belongs to a different board revision — on a multi-revision machine those files look right and are wrong in exactly the places that cost you an afternoon.
Can I download the MacBook Pro 13-inch A1278 (2009–2012) (820-2327) boardview file?
Yes. The original 436 KB BoardView file is linked below under downloads, named macbook-pro-13-inch-a1278-820-2327.brd. Open it in BoardViewer or any other tool that reads the .brd format. The interactive viewer on this page is for looking things up quickly; the .brd is what you want when you are at the bench with the board on the mat.
Related boards
Other boards for the same machine family, in case this is not the revision you have.
