Component layout PDF for the Samsung S5282, 531 KB, which appears to duplicate another copy of the same name and size. Comp most likely indicates a component placement drawing; no revision is stated. Such pages let a technician find the physical location of designators referenced in a schematic, making it easier to probe test points, replace capacitors or reflow ICs. Open it in any PDF reader and zoom in for detail. Check the PCB against the drawing before acting, as hardware revisions can move parts.
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 @tamirat_moobile. 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.