For newer firmware versions or if security settings were initialized, the default password may be the device's 10-digit serial number .
(found on a sticker on the back of the machine or under "Device Information" in the settings). Manual/Label: kyocera m3550idn default password work
If you receive an "incorrect login" error on the web interface, try using a different web browser or clearing your current browser's cache. For newer firmware versions or if security settings