Acer Aspire ES1-311 schematic labelled EA30_BM with board number 14221-SB, in a 2.59 MB PDF. Five-digit numbers with a suffix like this resemble Wistron's numbering, though the name does not state the maker, so confirm against the PCB label. Technicians use the diagram to trace power rails, check the charging circuit, locate components on shorted lines and follow signals between the SoC and peripherals. Make sure the board number printed on your motherboard matches before relying on component values or test points.
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.
All sources (23)
The same file was posted more than once. If one link is dead, try the next.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.