Service archive for the Dell Latitude 5580, built on the Compal LA-E151P board, revision 1.0, with the CDP80 project code and an A00 tag in the name. At 40.8 MB it probably bundles a schematic and possibly boardview or BIOS material, but check the contents after extracting. Compal uses the LA-xxxxP naming for boards it builds for Dell. Use the documents to trace power rails and locate components, and confirm that the revision printed on your PCB matches the one stated here.
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 @azvoltagemap. Enginerys does not host this file.
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