Component placement PDF for the Apple iPhone 7 Plus logic board, about 5.99 MB. A PCB drawing of this type shows where parts, connectors and test points sit, letting a technician find a reference designator taken from the schematic. The name states no board revision, so match it to the physical board before working. It is particularly useful when locating capacitors on a shorted rail, checking filters near the charging port or identifying chips under shields. Any standard PDF reader opens it, with zoom revealing labels.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematic_mobiles. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.