Schematic for the SM4635 processor, with an SM46 family tag, supplied as a 1.22 MB PDF; the source phone and board revision are not named. The pages document SoC pin assignments, power domains and connections to memory and peripherals. A technician can use them to confirm which rails should be present, trace clocks and reset signals, or locate a short around the CPU area. Check net labels and part references against your own board before taking any reading as correct.
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 @mischematic. 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.