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.

Compressed RAR package with a Dell schematic for the D400 model, judging by the name, which spells schematic as schemetic and lists no board number or revision.

RAR archive of 446 KB described as a Dell power schematic for the Latitude D400 notebook.