Boardview layout for the Quanta FM1 board, marked B, likely the revision, in .bv format at 856 KB. It shows component positions, net names and pin connectivity, letting a technician find test points, locate parts on a shorted rail and confirm where a signal runs on the PCB. Open it with boardview software that supports .bv, such as OpenBoardView or FlexBV. Pair it with the FM1 schematic for full diagnosis, and confirm that the board code and revision on the PCB match before measuring.
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 @smschematics. Enginerys does not host this file.
How to open a .bv file
Older ATE boardview format, usually found for legacy laptop and desktop boards.