Schematic diagrams for the Sony VGN-C22CH laptop, provided as an 881 KB PDF. The name does not give a board number or revision, so check the title block inside for the platform code and compare it with the markings on your motherboard. A schematic like this lets a technician follow the power-on sequence, measure rails at regulator outputs, identify components around a short and trace display, USB or charging circuits. It appears to be the same size as another VGN-C22CH file in this index, which may be an identical copy.
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 @smschematics. 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.