Boardview for Lenovo board NM-B901 in TVW format, zipped at 1.81 MB. This LCFC board is used in the ThinkPad T490 and T590. Open it in a TVW-capable viewer to search nets, highlight connected pads and locate capacitors, coils and test points when measuring rails or tracking down a short. Combine it with the NM-B901 schematic for voltage and signal context, and confirm the board number and revision silkscreened on the PCB match before probing.
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 @vinafix_bios. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.