RAR package with a BVR boardview for the iPhone 5C, labelled iP5C. Extract it and load the file in a viewer that supports BVR, such as FlexBV, to see the logic board layout with part references and nets. Technicians use it to trace connector pins, find filters and test points, and isolate shorted lines. No board number or revision is given in the name, so compare the component placement with the actual board before trusting the result. It can be paired with the schematic for a fuller diagnosis.
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 @GENERAL_SMART_PHONE_SCHEMATICS. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.