Circuit schematic in PDF form for the Compal-designed mainboard LA-K321P, revision 2A. Compal marks its laptop boards with LA- codes, and these boards ship inside several brands, so the code on the PCB is the reliable identifier. The 2.30 MB RAR lets a technician follow power rails, enable signals, the charger stage and component values while hunting faults. Since the firmware set elsewhere refers to revision 1B, confirm your own board revision, as part placement and values can change between revisions.
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 | 30 Nov 2022 | Open file on RM Schematics |
| @cyberlanelectonik | 18 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.