Schematic material for the Xiaomi Redmi 5A packed in a 2.84 MB ZIP archive; the sch prefix indicates schematic diagrams, even though the entry is filed under firmware. No board revision is stated in the name. Technicians use such drawings to trace power rails from the PMIC, follow charging and USB signals, check the backlight and display circuits and locate components around a short. Extract and review the pages, and confirm that the board marking on your phone matches the revision shown in the schematic title blocks.
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 @tamirat_moobile. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →