Epson WF-7720, WF-7710, WF-7210 Series Service Manual Page 1-20

Confidential Appendix Fatal Error Code 16 Epson WF-7720 / WF-7710 / WF-7210 Series Revision A 1.3.2 Fatal Error Code This section describes the fatal error code and the possible cause for this product. " ADF/Scanner (p16)" " Printer (CR) (p21)" " Printer (PF) (p23)" " Printer (ASF) (p25)" " Printer (PE/Head/CSIC) (p26)" " Printer (others) (p27)" " System Error (p28)" 1.3.2.1 ADF/Scanner Fatal errors related to the ADF/Scanner unit do not occur for WF-7210 Series because this model does not have ADF/Scanner unit. Error code Error name Possible cause Confirmation procedure Connector No. 100001 ADF PID excess speed error Failed to read the ADF motor encoder 1. Contamination of the ADF encoder scale 2. Damage or skew of the ADF encoder FFC 3. Failure of the ADF encoder sensor Failure of the ADF motor driver 4. Failure of the main board 1.Clean the ADF encoder scale if it is contaminated. 2.Check the cable/FFC of the ADF motor/encoder. 3.Replace the ADF encoder sensor with a new one. 4.Replace the main board with a new one. Main board CN33 CN73 100002 ADF PID reverse error Paper feed fails, stopped by obstacles 1. Paper feed was stopped by; • Obstacles such as jammed paper • Overload of the paper feed mechanism • Disengaging or tooth breakage of wheel train of the paper feed mechanism Failed to read the PF motor encoder 2. Jumping of the ADF timing belt 3. Contamination of the ADF encoder scale 4. Damage or skew of the ADF encoder FFC 5. Failure of the ADF encoder sensor 6. Failure of the main board 1.Check that no pieces of paper or foreign objects exist in the paper path. 2.Check the load of the ADF paper feed mechanism. 3.Check the ADF drive gear wheel train. 4.Clean the ADF encoder scale if it is contaminated. 5.Check the cable/FFC of the ADF motor/encoder. 6.Replace the ADF encoder sensor with a new one. 7.Replace the main board with a new one. Main board CN33 CN73 100003 ADF PID lock error The ADF motor did not run or obstacles exist in the paper path 1. Overload of the paper feed mechanism 2. The ADF timing belt become frayed, jumping, or the wheel train of paper feed mechanism is disengaged or its tooth is broken Failed to read the ADF motor encoder 3. Contamination of the ADF encoder scale 4. Disconnection, break, skew or damage of the ADF encoder FFC 5. Failure of the ADF encoder sensor 6. Failure of the ADF motor (the lead wire is broken or the connector is disconnected) 7. Failure of the main board 1.Check that no jammed paper exist in the paper path. 2.Check the load of the ADF. 3.Check the ADF drive gear wheel train. 4.Clean the ADF encoder scale if it is contaminated. 5.Check the cable/FFC of the ADF motor/encoder. 6.Replace the ADF encoder sensor with a new one. 7.Check the connector of the ADF motor. 8.Replace the ADF motor with a new one. 9.Replace the main board with a new one. Main board CN33 CN73
Page 16 of 20

Epson WF-7720 Series Service Manual Page 1-20
Epson WF-7710 Series Service Manual Page 1-20
Epson WF-7210 Series Service Manual Page 1-20

Leave a Reply