Schematic diagram for the Apple iPhone XS logic board numbered 820-00997, supplied as a PDF compressed in a 1.50 MB ZIP archive. Apple uses the 820-xxxxx pattern for its main logic board part numbers, so the code should match the marking on the PCB. The schematic lets a technician trace power rails from the PMIC, follow signal lines between the stacked board halves and identify which component is shorting a rail. Any PDF reader opens it after extraction, and pairing it with a boardview makes locating parts much faster.
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 @Schematics_Mobile. Enginerys does not host this file.
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