Schematic for Compal board LA-C921P, revision 1.0 (A00), carrying the project code AAP21, supplied as a 4.24 MB RAR. No laptop brand or model is stated, so the title block and the board label are the way to confirm which machine it suits. Compal uses the LA-xxxxP pattern for main logic boards. Open the PDF to trace power rails, follow the power-on sequence, read part values and pin functions, and locate the circuitry around a short. Check the revision printed on the PCB against the drawing.
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 (9)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 7 Mar 2021 | Open file on RM Schematics |
| @BiosSchematicWorld | 6 Dec 2021 | Open file on RM Schematics |
| @schematicslaptop | 30 Jan 2022 | Open file on RM Schematics |
| @pepeelectronica | 27 Apr 2022 | Open file on RM Schematics |
| @cyberlanelectonik | 23 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 26 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 3 Aug 2026 | Open file on RM Schematics |
| @schematics_bios | 14 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.