Pre-Registration Sensor Unreached Paper Jam (C1 PW)
Error code
- 15 Pre-Registration Sensor Unreached Paper Jam (C1 PW)
Occurrence condition
- The Pre-Registration Paper Sensor does not detect the paper 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.
- The Paper Feed Sensor has a dirty surface, has fallen off, or is faulty
- The Pre-Registration Sensor has a dirty surface, has fallen off, or is faulty
- The Pickup Clutch has fallen off or is faulty.
- Paper PF clutch 1 or PF clutch 2 has fallen off or failed
- Failure of the main unit motor that drives the paper feed mechanism
- the MCU board failure
Related parts
- Pickup Unit for paper feed (Pickup roller, Torque limiter, Paper Feed Sensor)
- All upstream Cassette Paper Feed Rollers
- Paper feed clutch for paper feed
- Target and all upstream Cassette Paper Feed Clutches
- Right Door Unit (Feed 1 Roller, PF Clutch 1)
- Feed 2 Roller, PF Clutch 2
- Pre-Registration Paper Sensor
- Motor for entire paper feed mechanism
- 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 any foreign objects or pieces of paper | Go to step 2 |
| 2 | Check the paper feed rollers/sensors for dirt and installation Are the rollers listed in the “Assumed cause” section clean and installed properly? |
Go to step 3 | Clean and reinstall the paper feed rollers. |
| 3 | Check the paper feed rollers for deformation and wear Are the rollers listed in the “Related parts” section deformed or worn? |
Replace the worn out or deformed 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 | Checking operation of cassette paper feed sensor for paper feed Check the operation of the cassette paper feed sensor for the paper feed target with the diagnostic function Does the signal change between when the paper is placed and when it is not? |
Go to step 7 | Go to step 6 |
| 6 | Check the Paper Feed Sensor of the cassette for installation, dirt, and connection Is there a problem with the installation of the cassette paper feed sensor for the paper feed target? Is there dirt on the sensor? Is the connector not fully inserted? Is the connector of the paper feed unit of the paper feed target cassette half-inserted? |
Clean the sensor surface, or fully insert the connector. | Replace the sensor |
| 7 | Check the operation of the Pre-Registration Sensor Check the operation of the Pre-Registration Sensor with the diagnostic function. 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 Pre-Registration Sensor for installation, dirt, and connector connection Is the Registration Sensor installed improperly? Is there dirt on the sensor? Is the connector not fully inserted? |
Clean the sensor surface, or fully insert the connector. | Replace the sensor |
| 9 | Check the clutch installation Are the feed target paper feed clutch and all the paper transport clutches upstream from the feed target cassette, and the feed 1 and feed 2 clutches installed properly? |
Go to step 10 | Reinstall it properly. |
| 10 | Check each Cassette Paper Feed Clutch Check the clutch operation with the diagnostic function. Does it make an operating sound (clutch connection sound)? |
Go to step 11 | Go to step 12 |
| 11 | Check the PF Clutch 1, PF Clutch 2 Check the clutch operation with the 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? |
Fully insert the connectors | Replace the parts one by one.
|
| 13 | Check operation of the main unit motor Check the operation of the corresponding Main Unit Motor with the diagnostic function. Is there any abnormal noise? |
Replace the gear trains or the Main Unit Motor. | Replace the MCU board |