Schematic document for the Samsung Galaxy J1 phone with model code SM-J120F, delivered as a 2.39 MB PDF. It is meant for board-level repair: following battery and charging paths, PMIC outputs, display and touch connectors, SIM and audio lines, and checking for shorts on power rails. It opens in any PDF viewer, and part designators can be searched to find a component quickly. The F suffix marks a specific regional variant, so confirm the model code on the phone matches before using values or pinouts from these drawings.
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.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.