PDF named only A11 and filed as a schematic, 6.80 MB. The name gives no brand or full model code; it likely refers to a Samsung Galaxy A11, but confirm against the contents. A service schematic of this size typically covers power management, charging, display and camera circuits with net names for tracing rails. Technicians use it to find missing voltages, follow signals between chips and locate parts near a short. Check the exact model number and board revision before trusting component references.
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 @esquematicosparatodos. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.