Spanish document on the logic or control area of a mobile phone board, a 252 KB PDF. Typical phone repair courses divide the board into sections, and the logic area includes the processor, memory, power management IC and clock circuits that control the device. No model is named, so the material is general. It helps beginners understand why faults in this zone cause dead, no-boot or restart symptoms, and where to measure supply rails and clocks. Pair it with the real schematic and boardview of the device being repaired.
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 @canalesquematicos. 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.