Schematic for the Samsung Metro 312, model SM-B312EH, a dual-SIM keypad phone, delivered as a 3.46 MB PDF. No board revision is given. Technicians use it to trace the power path from the battery through the PMIC, the charger and USB circuitry, the keypad matrix, and the SIM and RF blocks when fixing dead or no-signal units. Any PDF viewer opens it. Compare the board markings on the handset with the document before replacing components or relying on the voltages it shows.
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 @c_f_s. Enginerys does not host this file.
All sources (8)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @c_f_s | 20 Oct 2017 | Open file on RM Schematics |
| @pepeelectronica | 23 Apr 2022 | Open file on RM Schematics |
| @pepeelectronica | 27 Apr 2022 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 5 May 2025 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 26 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 31 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 3 Aug 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.