Sub-board schematic for the Samsung SGH-E390, provided as a 231 KB PDF. The SUB tag means it covers the secondary PCB rather than the main logic board, and a separate main schematic exists for this model. On flip or slider phones the sub board usually carries parts such as display, keypad or interconnect circuitry. Use it to check continuity across the flex connection and trace signals between the boards. Pair it with the main sheet when diagnosing display or key faults, and view it in any PDF reader.
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 @mobileshematic. Enginerys does not host this file.
All sources (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @mobileshematic | 13 Jun 2019 | Open file on RM Schematics |
| @Schematic_mobile_iran | 21 Nov 2020 | Open file on RM Schematics |
| @Schematic_mobile_iran | 22 Nov 2020 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.