Toshiba e-Studio 4540c
- Code: C380
- Description: Auto-toner sensor-K 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. 2 EPU • 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. 3 Auto toner sensor - Equipment Harness - LGC board • Check the connectors and harnesses between the auto toner sensor and LGC board (CN340). • Remove any foreign matter such as toner in the connector of the auto toner sensor.
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