Post-Belt Sensor paper jam error
Error code
- 78 Post-Belt Sensor paper jam error
Occurrence condition
- The Post-Belt Sensor detected paper when the power was turned ON, when the cover was closed, or when the product recovered from the power saving mode.
Assumed cause
- Foreign objects or pieces of paper in the paper transport path
- The Post-Belt Sensor has a dirty surface, has fallen off, or is faulty.
- Mechanical control board failure
Related parts
- Post-Belt Sensor
- Post-Belt Guide Unit
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 any foreign objects or pieces of paper |
Go to step 2 |
| 2 | Check the operation of the Post-Belt Sensor Check the operation of the Post-Belt Sensor with the diagnostic function. Does the signal change between when the paper is placed and when it is not? |
End | Go to step 3 |
| 3 | Check the Post-Belt Sensor for installation, dirt, and connector connection Is the Post-Belt Sensor installed improperly? Is there dirt on the sensor? Is the connector not fully inserted? Is the relay connector on the Front Frame side not fully inserted? |
Clean the sensor surface, or fully insert the connector. | Replace sequentially
|