Toshiba e-Studio 3055C

Error Code:

Code: C390
Description: Auto-toner sensor-C abnormality (upper limit)
Causes: Auto toner sensor Harness LGC board Developer material
Remedy: 1 Developer unit • Check if the developer unit is installed properly. • Check that the developer unit and coupling on the equipment side are properly engaged. • Check that the mixer of the developer unit is rotated. • Check if the developer material is too dark visually. • Check if the amount of the developer material is too large or too small. • Remove any toner or dust on the ATC sensor connector and the drawer connector of the process cover. • Remove any toner or dust on the EPU sensor connector and the drawer connector on the equipment side. 2 Auto toner sensor Harness LGC board • Check the connectors and harnesses between the auto toner sensor and LGC board (CN365). • Check if there is any foreign matter such as toner in the connector of the auto toner sensor. Remove if there is and reconnect it.

	Error Code
	Service Mode, Troubleshooting
	Parts Catalog
	Compatibility
	Downloads Files
	Home