Description: Developing roller release operation defect
After the specified time from rotating the main motor for the developing roller depress/release, the output of the developing home position sensor does not change.
Causes: Developing home position sensor defect, Main motor defect, DC controller PCB defect
Remedy: • Check the connector of the developer home position sensor, main motor, DC controller PCB • Replace the developer home position sensor • Replace the main motor • Replace the DC controller PCB
Code: E020-0000
Description: Density sensor abnormality
Not enough light received upon image density detection.
Causes: Soiled density detection sensor, density detection sensor defect, DC controller PCB defect, toner cartridge defect
Remedy: • Check the connector of the DC controller PCB. • Replace ITB unit • Replace DC controller PCB • Replace toner cartridge