PW Sensor Unreached Paper Jam (C1)
Error code
- 16 PW Sensor Unreached Paper Jam (C1)
Occurrence condition
- The PW Sensor does not turn on after the specified time has elapsed since the target Pickup Clutch is activated
Assumed cause
- Foreign objects or pieces of paper in the paper transport path
- The paper feed rollers are worn out, deformed, have fallen off, or have a dirty surface
- Malfunction of the retard torque limiter of the Pickup Unit.
- PW Sensor has a dirty surface, has fallen off, or is faulty
- The cassette pickup clutch has fallen off, or is faulty
- All Drive Motor failure
- MCU board failure
Related parts
- Pickup Unit for paper feed (Pickup roller, Torque limiter)
- All upstream Cassette Paper Feed Rollers
- Pickup clutch of the cassette
- PW Sensor
- All Drive Motor
- 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 paper transport roller sensor for dirt and installation Are the roller and sensor specified in the part to be checked installed properly? Make sure no dirt remains on the surfaces. |
Go to step 3 | Clean and reinstall the paper feed rollers. |
| 3 | Check the deformation and wear of the paper transport roller Are the rollers listed on the suspected part deformed or worn? |
Replacement of applicable paper transport roller | Go to step 4 |
| 4 | Check the Torque Limiter Can you rotate the Retard Roller by hand? |
Go to step 5 | Replace the retard torque limiter. |
| 5 | Check the operation of the target cassette pickup unit sensor　 Check the operation of the cassette pickup unit for paper feed with the diagnostic function Judgment: Does the Hopper Plate rise when the cassette is inserted and paper is placed on, and does the signal change when paper is not placed? |
Go to step 7 | Go to step 6 |
| 6 | Check the connection of the connectors for the cassette pickup unit Are the connectors for the cassette pickup unit not fully inserted? |
Properly install the sensor surface, or fully insert the connector. | Replace the Pickup Unit |
| 7 | Check the operation of the RW Pre-Registration Sensor Check the operation of the RW Pre-Registration Sensor with the diagnostic function. Judgment: Does the signal change between when the paper is placed and when it is not? |
Go to step 9 | Go to step 8 |
| 8 | Check the PW Sensor for installation, dirt, and connector connection Is the PW Registration Sensor installed improperly? Is there dirt on the sensor? Is the connector not fully inserted? |
Clean the sensor surface, reinstall the sensor, or fully insert the connector. | Replace the Sensor |
| 9 | Check the clutch installation Is the cassette pickup clutch for paper feed installed properly? |
Go to step 10 | Reinstall it properly. |
| 10 | Check the cassette pickup clutch for paper feed Check the clutch operation using the failure diagnostic function. Does it make an operating sound (clutch connection sound)? |
Go to step 11 | Go to step 12 |
| 11 | Check the Feed 1 Clutch and Feed 2 Clutch Check the clutch operation using the failure diagnostic function. Does it make an operating sound (clutch connection sound)? |
Go to step 13 | Go to step 12 |
| 12 | Check the malfunctioning clutch for connection Are any of the connectors connecting the clutch not fully inserted? |
Connect securely | Replace the parts one by one.
|
| 13 | Check the All Drive Motor operation Check the operation of the corresponding drive motor using the diagnostic function. Judgment: Is there any abnormal noise? |
Replace the gear train and All Drive Motor | Replace the MCU board |