A schematic diagram (board LA-D871P). Shared as “Bal60 LA-D871P Rev 1.0.pdf” — a .pdf file, 4.10 MB.
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 @abgm_manutencao_esquemas. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.