Schematic diagram for a Dell 14-inch notebook using Compal motherboard LA-B843P at revision 1.0, supplied as a 1.65 MB rar archive. Technicians use these circuit pages to trace power rails, follow the power-on sequence, find which components feed a shorted line and identify signal paths between the chipset, EC and peripherals. The LA-xxxxP pattern is Compal's board numbering, and Dell has used Compal as an ODM for many models. Check that the number and revision silkscreened on the board match before relying on component 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 (7)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 20 Feb 2022 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @boardviewsandachematics | 1 Sept 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 15 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 25 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 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.