PDF schematic for the Dell Latitude E6440 built on a Compal LA-9931P motherboard, project code VAL90, packed in an 853 KB RAR archive. The LA-numbering marks Compal as the ODM that designed the board. Technicians use the diagrams to follow power rails, the power-on sequence and signal paths when diagnosing no-power, no-boot or charging faults. Make sure the LA number printed on your PCB is LA-9931P, since the related LA-9932P variant has different circuits, and open the file with 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 @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 | 1 Aug 2023 | Open file on RM Schematics |
| @cyberlanelectonik | 15 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.