Schematic for the Dell Latitude E5440 business laptop, built by Compal as motherboard LA-9832P at revision 1.0. The PDF covers the whole board, from DC input and charging through the CPU and memory power to the I/O. Technicians use it to measure rails at the right points, find a shorted capacitor or MOSFET, and follow the enable signals in the power-on sequence. Make sure the PCB carries the LA-9832P marking and the same revision before relying on part values from it.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.