Schematic for the MSI J1800I mini-ITX motherboard, board number MS-7877 revision 1.1, supplied as a PDF inside a RAR archive. The J1800I name refers to the board built around the Intel Celeron J1800 SoC. Technicians use these diagrams to trace power rails, follow the standby and main voltage sequence, and identify components around the VRM, BIOS chip and ports when diagnosing a dead or shorted board. MS-7877 follows MSI's own numbering, so confirm the number and revision silkscreened on the PCB match before relying on values.
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 @schematicslaptop. 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 | |
|---|---|---|
| @schematicslaptop | 4 Sept 2022 | Open file on RM Schematics |
| @cyberlanelectonik | 19 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.