RAR archive of 2.30 MB whose Russian name describes a PDF with manufacturer commands for testing cards, although it is catalogued as a schematic. The name does not specify the brand, card type or model, so the exact contents are unclear until opened. Documents of this kind usually list diagnostic or service commands supplied by the maker for checking hardware. Extract the archive and review the PDF in any reader to confirm which device it covers before applying any commands to a unit under repair, and follow the stated procedures carefully.
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 @videocard_notebook_resistance. 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.