Laptop schematic for the A660 and A665 models, covering the Compal LA-6831P mainboard with the PHQAA project code. Compal marks its boards with LA-prefixed numbers on the PCB, and that label together with the revision should be checked before using this file. The 1.74 MB PDF shows power rails, voltage regulators, enable signals and connector pinouts, which helps when diagnosing no-power, charging or display faults. Any PDF viewer opens it, and searching for net names is a fast way to follow a signal across pages.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.