Repair package for the IBM ThinkPad R40, stored as a 1.29 MB RAR archive. The name lists only the model, with no board number, revision or note on contents, though such archives usually carry the system board schematic in PDF. It is useful for following rails from the DC input through the charger and regulators, finding test points and isolating shorted components. R40 units were built in several configurations, so check the board markings first.
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)