PDF schematic for a board coded H54Y in its UMA variant, packed as a 1.20 MB ZIP. UMA means integrated graphics only, without a discrete GPU, so the GPU power and VRAM sections found on discrete versions will be absent. The name gives no brand or laptop model, so confirm the code against the PCB silkscreen first. Use the document to trace power rails, check the charger and power-on circuits and locate the source of shorts. Any regular PDF viewer is enough to read it.
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 @LaptopsBoardview. Enginerys does not host this file.
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