Schematic archive for a Dell model referred to only as 1427, most likely the Inspiron 1427, although the name carries no board number or revision.

Dell power schematic for the D400, judging by the name, packed as a 401 KB RAR archive. It appears to cover the power section rather than the full board.

RAR archive of 1.78 MB containing what the name calls a Dell schematic for the D400, the Latitude ultraportable.

Circuit schematic for the Dell 710M, packaged in a 935 KB RAR file; the SC token in the name most likely just stands for schematic, and no board number or revision…