ASUS EX-B150M-V5 D3 repair guide packed in a 1.24 MB RAR file. The D3 marking points to the DDR3 memory version of this B150 board, so be sure the unit on the bench is the same variant. Guides like this help a technician step through standby power, power-on sequencing and main voltage rails to find where a dead board fails. Confirm model and revision on the PCB first. Any standard archiver opens it; the enclosed document format is not named.
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 @ZINFOSERVICECHANNEL1. 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.
7-ZipWinRARThe Unarchiver (macOS)