Package for the Z84F, stored as a RAR archive of about 1010 KB. The name gives just the model or board code, so the contents are not described. It could hold a schematic, a boardview or firmware, and you should open it with 7-Zip or WinRAR to see. Note that the Z84F, Z84FM and Z84J entries are related designations but not interchangeable. Confirm the exact variant printed on the board and its revision before using the files for diagnosis or reflashing.
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 @IT_SERVICE_WORLD. 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)