Archive for the Compal LA-B221P board, revision 0.3, associated with Acer laptops. The name does not state the contents, which may be a schematic, boardview or firmware, so open the RAR to check. LA-xxxxP numbers follow Compal's ODM pattern, and Compal builds many Acer mainboards. Schematics and boardviews of this kind help trace power rails, find test points and locate shorted components. Ensure the board number and revision printed on the PCB match before relying on the data.
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 @Boardviewno. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.