Compal LA-7221P schematic diagram, revision 1.0, delivered as PDF inside a 1.38 MB rar file. Compal uses the LA-number pattern for its laptop mainboards built for various brands; the target notebook model is not named here. Open the PDF in any reader to follow the power-on sequence, look up the controllers for each rail, check expected voltages and trace signal paths across sheets. Revision 1.0 is usually the production release, but confirm the revision printed on your board, since an earlier revision of this design exists with different details.
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 (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 5 Dec 2022 | 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.