Early-revision schematic for the ASUS K53T, covering Compal board LA-7552P at revision 0.03, supplied as a 1.14 MB PDF. Such a low revision is typically a pre-production issue, so component placement and values may differ from shipped boards; a 1.0 copy of the same board also exists. The drawing still helps with understanding rail generation, enable signals and circuit blocks while diagnosing faults. Compare the revision silkscreened on your PCB with this document, and fall back on a later revision when they disagree.
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