What does error 100 typically indicate in a Brother printer?

Error 100 on a Brother printer usually signifies a paper jam or a foreign object obstructing the paper path. It can also be triggered by a sensor malfunction detecting an obstruction. Troubleshooting involves carefully inspecting the entire paper path, including the input tray, output tray, and internal rollers, for any obstructions. Restarting the printer after clearing any jams is often necessary.