Boardview for the first-generation Apple iPad mini logic board, in .pcb format of about 20.4 MB. Repair technicians use it to locate parts by designator, highlight nets, find measuring points and trace connections when diagnosing no-boot, no-charge or short-circuit faults. It pairs well with the matching iPad mini 1 schematic for full circuit context. Open it with a compatible viewer like OpenBoardView or FlexBV, and confirm the board is the original mini before trusting part locations.
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 @boardview. Enginerys does not host this file.
How to open a .pcb file
In repair archives a .pcb is typically an XZZ (XinZhiZao) boardview — popular for phones and recent laptops.