Schematic PDF for the Dell Latitude 5411, Dell part FDV42, built on Compal board LA-J272P. Compal uses LA-xxxxP numbers for its laptop mainboards, and that code is printed on the PCB. The diagram covers power sequencing, charger, CPU VR, EC, USB-C and display paths, which helps when chasing a short, a missing rail or a dead port. Open it in any PDF viewer and search net names. Confirm the LA-J272P marking and revision on the actual board before trusting the circuit details.
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 @vinafix_bios. 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.