Lenovo ThinkPad X200t tablet repair archive in RAR format, about 1.81 MB. The file name names only the model, so the archive could contain a schematic, boardview or both, and no board revision is stated. ThinkPad boards often show an FRU or planar number on the PCB, and that marking should be checked against the document. With a matching schematic a technician can trace the power-on sequence, measure rails at the listed test points and isolate shorted capacitors or failed MOSFETs around the charging and VRM circuits.
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 @generalschematics. 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.