Mainboard schematic labelled 1000HE MB, a 696 KB PDF; the name gives only the model code, with MB indicating the motherboard, and no brand or revision is stated. Check the document title block and the PCB markings to confirm the match before trusting part values. Netbook-class schematics like this are used to trace the charger and system rails, follow the power-on sequence, find fuses and test points and identify components around a short. Any standard PDF viewer will open it, and net-name search helps navigation.
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 @schematicslaptop. 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.