Huawei P30 schematic collection packed in a 1.32 MB zip; the name gives no board number or revision. Phone schematics help pinpoint where charging, power-on, display and audio faults originate by following signal and supply paths through the PMIC and connectors. Open the extracted pages in a PDF viewer or the matching tool if the archive includes layout data. Before diagnosing, compare the board markings on the handset with the drawings, since mid-cycle revisions may alter components.
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 @phoneSchematics. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.