Epson WF-4740,WF-4730,WF-4720, EC-4040, EC-4030, EC-4020 Series Service Manual Page 21-40

Confidential Fatal Error Code List 21 EPSON WF-4740/EC-4040 Series / WF-4730/EC-4030 Series / WF-4720/EC-4020 Series Revision D 000025 CR PID speed fall error Operation failure of the CR 1. The CR was stopped by; • Obstacles such as jammed paper • Overload of the mechanism • Interfere with the ink system Failed to read the CR motor encoder 2. The timing belt become loosened or jumping 3. Contamination of the CR encoder scale 4. Damage or skew of the CR encoder FFC 5. Failure of the CR motor 6. Failure of the main board 1. Check that no obstacle exist in the CR motion range. 2. Check the CR lock and ink system for any abnormality. 3. Check the timing belt for looseness. 4. Clean the CR encoder scale if it is contaminated. 5. Check the connector of the CR encoder FFC. 6. Replace the CR motor with a new one. 7. Replace the main board with a new one. Main board CN72 CN68 Main board CN702 CN608 000030 CR load position driving time error Malfunction or crash of the firmware 1. Turn the printer off and back it on. 2. If the error still occurs after the restart, replace the main board. --- --- 000031 CR load position excess load error The CR motor stopped running in the middle of the operation 1. The CR was stopped by; • Obstacles such as jammed paper • Overload of the mechanism • Interfere with the ink system • Disengaging or breakage of the gears • Disengaging, fraying, jumping of the timing belt Failed to read the CR encoder 2. Contamination of the CR encoder scale 3. Failure of the CR motor (not completely broken) 4. Failure of the main board 1. Check that no obstacle exist in the CR motion range. 2. Check the CR lock and ink system for any abnormality. 3. Check the timing belt for fraying or looseness. 4. Check the load applied to the CR by moving it by hand. 5. Check if the lubricant on the CR shaft is adequate. 6. Check the CR drive mechanism. 7. Clean the CR encoder scale if it is contaminated. 8. Replace the CR motor with a new one. 9. Replace the main board with a new one. 1. Clean the CR encoder scale if it is contaminated. 2. Check the FFC of the CR encoder. 3. Replace the CR encoder sensor with a new one. 4. Replace the main board with a new one. Main board CN72 CN68 Main board CN702 CN608 000032 CR load position excess speed error Failed to read the CR encoder 1. Contamination of the CR encoder scale 2. Damage or skew of the CR encoder FFC 3. Failure of the CR encoder sensor Failure of the CR motor driver 4. Failure of the main board Main board CN72 CN68 Main board CN702 CN608 000033 CR load position reverse error Operation failure of the CR motor, stopped by obstacles 1. CR was stopped by; • Obstacles such as jammed paper • Overload of the mechanism • Interfere with the ink system Failed to read the CR encoder 2. Jumping of the CR timing belt 3. Contamination of the CR encoder scale 4. Damage or skew of the CR encoder FFC 5. Failure of the CR encoder sensor 6. Failure of the main board 1. Check that no obstacle exist in the CR motion range. 2. Check the CR lock and ink system for any abnormality. 3. Check the timing belt for fraying or looseness. 4. Clean the CR encoder scale if it is contaminated. 5. Check the CR encoder FFC or the connector. 6. Replace the CR encoder sensor with a new one. 7. Replace the main board with a new one. Main board CN72 CN68 Main board CN702 CN608 Error code Error name Possible cause Confirmation procedure Connector No. WF-4740/ EC-4040 Series WF-4730/ EC-4030/ WF-4720/ EC-4020 Series
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Epson WF-4740 Series Service Manual Page 21-40
Epson WF-4730 Series Service Manual Page 21-40
Epson WF-4720 Series Service Manual Page 21-40
Epson EC-4040 Series Service Manual Page 21-40
Epson EC-4030 Series Service Manual Page 21-40
Epson EC-4020 Series Service Manual Page 21-40