Laptop schematic in PDF form whose name carries only the project codes ZHP and ZSP with what appears to be revision 1A; no brand or model is stated. The ZxxX style of project code is typical of Compal-designed boards, though the name does not confirm this. A technician uses such a diagram to follow power rails from the charger input to the CPU regulators, read signal names and find the parts involved in a short. Compare the project code and revision silkscreened on the PCB before trusting any values, since these 1.22 MB pages describe one specific design.
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 @ITHINKHS. 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.