Lenovo ThinkPad E30 - QUANTA PS1 - REV 1A

Lenovo ThinkPad E30 circuit diagram for the Quanta PS1 mainboard, revision 1A, provided as a 1.21 MB PDF. It differs from the PS-NOTE drawing of the same model, so the board code on the PCB decides which document applies. A technician can use these pages to follow the charging and main power circuits, check regulator enable and feedback signals, and narrow down shorted components. Any PDF viewer is enough. Check that the revision on the board matches 1A, as part values and placement can change between revisions.

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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