Product specification section of the Samsung SM-M307F service documentation (Galaxy M30s), a 2.90 MB PDF. PSPEC denotes the product specification chapter, which typically lists hardware features, chipset, memory, display, camera and radio bands. It is useful for confirming the variant and the parts fitted before ordering replacements or comparing with other boards. Open it with any PDF reader and combine it with the troubleshooting and circuit chapters of the same manual.
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 @mobile_jump2. 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.