Laptop schematic in PDF form for the Compal LA-C551P motherboard, revision 1.0. LA- numbers ending in P are Compal's own board codes and appear inside laptops from several brands, so the end brand is not stated here. The diagram shows power rails, enable signals, the charging and VRM circuits and connector pinouts, which helps when tracing a no-power or short fault. Check that the LA code and revision silkscreened on the PCB match before trusting component values.
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 @cynetitsolution. Enginerys does not host this file.
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The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @cynetitsolution | 29 Jun 2026 | Open file on RM Schematics |
| @schematics_bios | 5 Aug 2026 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.