Small RAR archive labelled for the ST24C16 serial EEPROM used in the Canon G2020 inkjet printer. At only 972 bytes it most likely holds a single 2 KB EEPROM dump, since a 24C16 chip stores 16 kilobits. Printer EEPROMs of this type keep counters, settings and configuration data, so technicians rewrite them with a programmer such as a CH341A using an I2C clip or socket. Read and save the original chip contents before writing, and confirm the extracted image is exactly 2048 bytes so it fits the 24C16.
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 @biositechyangiyer. 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.