Part three of a four-volume RAR collection whose Russian title translates as schematics and boardviews, 1.76 GB in size. It forms part of a large mixed library of circuit diagrams and board layout files, though the name lists no specific brands or models. Extraction requires all four volumes in one folder, started from part1 with WinRAR or 7-Zip. Once unpacked, schematics generally open in a PDF reader and boardviews in OpenBoardView or FlexBV, so check board numbers against your PCB before use.
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 @opendatasheet. 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.