PDF schematic labeled only X200, which most likely refers to the ThinkPad X200, though the name gives no board number, revision or manufacturer details. At 719 KB it is a fairly compact drawing set. Use it to trace power rails, follow signals and locate components when diagnosing no-power, no-charge or no-display faults. Because the name is minimal, compare the board number and revision printed on the PCB with the title blocks inside the document before relying on component references or values.
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.