C4 Paper Feed Sensor paper jam error
Error code
- 73 C4 Paper Feed Sensor paper jam error
Occurrence condition
- The C4 Paper Feed Sensor detected paper when the power was turned ON, when the cover was closed, when the product recovered from the power saving mode, or when the printing operation ended
Assumed cause
- Foreign objects or pieces of paper in the paper transport path
- The C4 Paper Feed Sensor has a dirty surface, has fallen off, or is faulty
- MCU board failure
Related parts
- C4 Pickup Unit (C4 Paper Feed Sensor)
- Paper Feed Cover
- MCU Board
Troubleshooting
| Step | Confirmation and action | YES | NO |
|---|---|---|---|
| 1 | Check paper transport path Is there any foreign matter, paper chips, etc. in the paper transport path? |
Remove foreign matter, paper fragments, etc. |
Go to step 2 |
| 2 | Check the operation of the C4 Paper Feed Sensor Check operation of the C4 Paper Feed Sensor with the diagnostic function. Judgment: Does the signal change between when the paper is placed and when it is not? |
End | Go to step 3 |
| 3 | Check the C4 Paper Feed Sensor for installation, dirt, and connector connection Is the C4 Paper Feed Sensor installed improperly? Is there dirt on the sensor? Is the connector not fully inserted? Is the relay connector for the C4 Pickup Unit not fully inserted? |
Clean the sensor surface, or fully insert the connector. | Replace the parts one by one.
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