夏普SHARP MX-2318UC程式碼： F2-40 說明：墨粉濃度感測器故障（K）原因：墨粉濃度感測器的輸出異常，感測器聯結器線束及連線問題。顯影元件故障，PCU PWB的故障）。措施：更換墨粉濃度感測器，檢查感測器聯結器和線束的連線，更換顯影元件，更換PCU板。夏普SHARP MX-2318UCCode F2-40 Description Toner density sensor trouble (K) Causes Toner density sensor output abnormality. Sensor connector and harness connection trouble. Developing unit trouble. PCU PWB trouble. Remedy Replace the toner density sensor. Check connection of the sensor connector and the harness. Replace the developing unit. Replace the PCU PWB. 如果滿意望及時採納：點選我的回答右邊的"採納答案"按鈕, ~答題不易，予人玫瑰，手有餘香。仍有問題請再追問，Thanks
夏普SHARP MX-2318UC程式碼： F2-40 說明：墨粉濃度感測器故障（K）原因：墨粉濃度感測器的輸出異常，感測器聯結器線束及連線問題。顯影元件故障，PCU PWB的故障）。措施：更換墨粉濃度感測器，檢查感測器聯結器和線束的連線，更換顯影元件，更換PCU板。夏普SHARP MX-2318UCCode F2-40 Description Toner density sensor trouble (K) Causes Toner density sensor output abnormality. Sensor connector and harness connection trouble. Developing unit trouble. PCU PWB trouble. Remedy Replace the toner density sensor. Check connection of the sensor connector and the harness. Replace the developing unit. Replace the PCU PWB. 如果滿意望及時採納：點選我的回答右邊的"採納答案"按鈕, ~答題不易，予人玫瑰，手有餘香。仍有問題請再追問，Thanks