PDF schematic identified only by the project code M920 and the PVT tag, meaning production validation test stage, with no brand or board number given in the name. The code resembles other M9xx Sony VAIO projects, but that cannot be confirmed from the title alone. At 1.26 MB it should contain the full board diagram. Open the title block to read the actual model and revision, then compare it with the PCB markings before using it to trace rails, locate parts or chase a short circuit.
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 @schematicslaptop. 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.