Archive for the TCL 32B3700 television, packed as a 2.33 MB RAR file. Apart from brand and model, the name says nothing about the contents, which may be a software dump, flash or EEPROM image, or service documents. Extract it with WinRAR or 7-Zip and check the file types before use. Before writing any image, back up the original memory with a programmer such as a CH341A or RT809H and confirm the main board code on the PCB matches, since one TV model can ship with several chassis.
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 @hashmielecom. 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.