Circuit diagram for Sony VAIO motherboard MBX-149, platform code MS12, at revision 2.0, in a 1.57 MB PDF. The trailing number in brackets suggests a duplicate copy of the same document. MBX is Sony's identifier for VAIO mainboards and is usually visible on the PCB. With this schematic a technician can follow supply rails from the charger to the CPU regulator, identify parts on a shorted line and check embedded controller signals. Confirm the revision printed on the board matches 2.0 first.
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