RAR archive of Samsung troubleshooting material for the SM-A105F, the Galaxy A10 variant, marked as common troubleshooting part 7. Samsung service troubleshooting guides typically walk through fault flows such as no power, no charging, display or audio failures, with block diagrams and measurement points. At 1.72 MB it is a compact set of pages. Extract it with WinRAR or 7-Zip and read the guide alongside a schematic of the same model, confirming the exact model code on the phone before following any procedure.
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_mobile_iran. 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.