PDF schematic of 1.26 MB labelled M920 with a PVT tag, meaning the Production Validation Test stage of the design, which is usually close to the final mass-production board. The name does not state the brand or device, so check the title block to identify the manufacturer and board. Once confirmed, use it to follow power rails, check signal routing and locate components and test points when diagnosing a short or no-power fault. Match the PCB board number and revision first.
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 @cyberlanelectonik. 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.