Sony notebook schematic referencing the 915PM and GM chipset variants, the Intel Mobile 915 Express family, in a 1.17 MB PDF. No model, MBX board number or revision is stated, so identify your mainboard carefully before using the sheets. The diagrams are useful for tracing chipset and memory supply rails, clock and reset signals, and for locating parts around a short. Because the name is vague, compare reference designators and connector layouts with the actual board to confirm a match.
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.