Repair archive for the Apple iPad 3, delivered as a 1.66 MB ZIP file. The name mentions only the model, so open it to see whether it carries a schematic, a boardview or images. Such material is useful for following the power and backlight circuits, identifying parts on the logic board and measuring test points when a tablet will not charge or boot. Compare the board with the documentation first, since the iPad 3 and iPad 4 look similar but use different logic board designs.
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 @cyberlanelectonik. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip