Archive named A980-1-4-01, a 842 KB RAR file with no brand stated. The pattern resembles document numbering used in board schematics, with A980 likely the model and 1-4-01 a document or version code, but the contents are not confirmed by the name. Extract and check what is inside, most likely circuit diagrams or service sheets. Compare the model and any revision marking on the hardware before using them to trace rails, test voltages or locate a shorted part.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)