Partial schematic for the Samsung SM-A720, Galaxy A7 2017, focused on the microphone, speaker and buzzer circuits, supplied as a 1.42 MB PDF. It is useful when a phone has no audio, a dead mic during calls or a silent ringer, showing the audio codec lines, amplifier, filtering parts and connector pins. Trace each path with a multimeter and compare readings to the drawing. Since only the audio section is covered, a full board schematic may still be needed for power-related faults.
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.
All sources (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @canalesquematicos | 16 Apr 2024 | Open file on RM Schematics |
| @canalesquematicos | 27 Jul 2024 | Open file on RM Schematics |
| @canalesquematicos | 2 Aug 2024 | Open file on RM Schematics |
| @esquemaseletricos | 11 Feb 2025 | Open file on RM Schematics |
| @canalesquematicos | 21 May 2026 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.