Small ZIP of 698 KB labelled M013936-015 with the UMT-KS marking. The name gives no brand, model or document type, and these codes are not expanded because their meaning cannot be confirmed. M013936-015 looks like a part number, possibly for a board, so compare it with labels on the hardware. At this size the archive probably holds a boardview or a short document. Open it to check the contents, then use it to locate components, follow nets and probe test points.
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 @ITHINKHS. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip