Sony K700 service schematic, numbered as part two and sized 635 KB in PDF format. The name does not list the pages or the circuit block it covers, so compare it with the other numbered K700 files to put the set together. Technicians use such sheets to follow power distribution, audio, display and SIM signal paths, and to measure against expected voltages when isolating a fault. It opens in any PDF viewer. Check that the board revision of your handset matches the drawings.
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 @mobileshematic. 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.