• Code: E727
• Description: Activation of a sensor at an unintended timing – The scan sensor, regist paper sensor, hopping sensor or reverse paper sensor becomes active at an unintended timing. (Simplex and Duplex)
• Causes:
• Remedy: Open the ADF cover, remove every jammed document from the paper feed path, and close the ADF cover.

• Code: E728
• Description: Detection of chattering of a sensor – Chattering of a sensor is detected. Once a sensor becomes active, the sensor becomes inactive in 5mm feeding of the document. Then the inactive sensor becomes active in the next 5mm feeding. (Simplex and Duplex)
• Causes:
• Remedy: Open the ADF cover, remove every jammed document from the paper feed path, and close the ADF cover.

• Code: E741
• Description: Reverse paper sensor stuck jam/ detection of out-of-spec oversized documents – The reverse paper sensor does not become inactive when the document is transferred to the distance exceeding the maximum page size. (Duplex)
• Causes:
• Remedy: Open the ADF cover, remove every jammed document from the paper feed path, and close the ADF cover.

• Code: E742
• Description: Detection of out-of-spec undersized documents – The reverse paper sensor becomes inactive before the document is transferred by the distance equal to the minimum page size. (Duplex)
• Causes:
• Remedy: Open the ADF cover, remove every jammed document from the paper feed path, and close the ADF cover.

• Code: E743
• Description: Non-arrival at the regist paper sensor at reversing to the front – After reversing to the front, the regist paper sensor does not become active in a lapse of a certain period of time. (Duplex)
• Causes:
• Remedy: Open the ADF cover, remove every jammed document from the paper feed path, and close the ADF cover.

• Code: E744
• Description: Non-arrival at the regist paper sensor at reversing to the back – When the document is transferred following reversal to the back, the regist paper sensor does not become active. (Duplex)
• Causes:
• Remedy: Open the ADF cover, remove every jammed document from the paper feed path, and close the ADF cover.

• Code: E778
• Description: Remaining document detection at power on – A sensor other than the document set sensor becomes active when the power is turned on or the cover is opened and closed during operation.
• Causes:
• Remedy: Open the ADF cover, remove every jammed document from the paper feed path, and close the ADF cover.

• Code: E779
• Description: Activation of only the document set sensor – Only the document set sensor becomes active at initialization of the ADF stopper gate.
• Causes:
• Remedy: Open the ADF cover, remove every jammed document from the paper feed path, and close the ADF cover.