RAR archive of 969 KB for the ThinkPad SL400 version with discrete VGA, meaning a dedicated graphics chip rather than integrated video. No board number or GPU model is given in the name. Material for the discrete variant matters because the GPU power stages, VRAM and their rails differ from the integrated board. Extract it with 7-Zip or WinRAR and confirm that your mainboard really carries the dedicated GPU, and that its board code matches the documents, before diagnosing.
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 @schematicslaptop. Enginerys does not host this file.
All sources (18)
The same file was posted more than once. If one link is dead, try the next.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.