Circuit diagram for the Sony MBX-202 laptop mainboard, with M970 and 971 noted as related model or platform codes, as a 1.11 MB PDF. Sony marks its notebook boards with MBX numbers on the PCB, so confirm that label first. The schematic is used to follow the DC input and charging stage, system power rails, CPU and memory supplies, and to locate test points while chasing a dead or shorted board. Read it in any PDF viewer, and use text search on signal names to jump between linked sheets.
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