Schematic set for the Wistron board 18777-1, project name LS40 / LS40IC, also carrying the part number 4PD0HB010001, supplied as a PDF inside a 1.68 MB RAR archive. Wistron numbers its main boards with a five-digit code plus a revision suffix, and this one should appear on the PCB silkscreen. A circuit diagram like this lets a technician follow power rails, power-on sequence signals and connector pinouts, and find where a short sits. Any PDF reader opens it once extracted; check that the board number on the hardware matches before tracing 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 (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 21 Feb 2023 | Open file on RM Schematics |
| @boardviewsandachematics | 2 Sept 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 4 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.