HP Compaq A900 notebook schematic based on Compal board LA-3981P, revision 0.2, provided as a 1.39 MB PDF. The LA-xxxxP code is Compal ODM numbering, so Compal designed the board for HP. Technicians use it to trace the adapter input, charger, always-on and CPU core rails, follow the power sequence, and locate parts while hunting shorts. Revision 0.2 suggests an early schematic, so compare the PCB revision and component values carefully before replacing parts.
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 @laptexdna. Enginerys does not host this file.
All sources (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @laptexdna | 17 Jul 2020 | Open file on RM Schematics |
| @one5technology | 25 Nov 2020 | Open file on RM Schematics |
| @laptexdna | 25 Jul 2022 | Open file on RM Schematics |
| @generalschematics | 15 Sept 2024 | Open file on RM Schematics |
| @generalschematics | 16 Sept 2024 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.