RAR archive holding the PDF schematic for the LG P420 laptop, built on the Quanta QLC motherboard, number DA0QLCMB8D0, revision D. The packed size is 3.97 MB and the name marks it as copy four. Extract it with any RAR-capable tool before viewing. LG notebooks were often made by Quanta, whose DA, project code and MB numbering is used here. Use the drawings to trace power rails, locate components and test points and diagnose shorts, and confirm the PCB shows the same number and rev D.
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 @abgm_manutencao_esquemas. 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.