| Problem |
Causes/check procedures |
Corrective measures |
| (44) A paper jam in optional document finisher is indicated during copying (center- folding unit jam). Jam code 89 |
Defective sensor/switch. |
Run maintenance item U241 and turn the following switch on and off manually. Replace the switch if indication of the corresponding switch on the touch panel is not displayed in reverse. Centerfold paper entry sensor, centerfold eject switch, centerfold paper conveying sensor |
| (45) A paper jam in optional document finisher is indicated during copying (mailbox jam). Jam code 90 |
Defective tray eject sensor. |
Run maintenance item U241 and turn tray eject sensor on and off manually. Replace the switch if indication of the corresponding switch on the touch panel is not displayed in reverse. |
| (46) A paper jam in optional document finisher is indicated during copying (eject sensor non-arrival jam). Jam code |
Defective eject paper sensor. |
With 5 V DC present at CN7-1 on the finisher main PWB, check if CN7-3 on the finisher main PWB remains low or high when the eject paper sensor is turned on and off. If it does, replace the eject paper sensor. |
| Check if the paper conveying motor malfunctions. |
Check. |
| Check if the eject roller and eject pulley contact each other. |
Check and remedy. |
| Check if the eject guide is deformed. |
Check and remedy. |
| Defective finisher main PWB. |
Replace the finisher main PWB and check for correct operation. |
| (47) A paper jam in optional document finisher is indicated during copying (switchback sensor jam). Jam code 93 |
Defective switchback sensor. |
With 5 V DC present at CN3-5 on the finisher main PWB, check if CN3-7 on the finisher main PWB remains low or high when the switchback sensor is turned on and off. If it does, replace the switchback sensor. |
| Check if the switchback motor malfunctions. |
Check. |
| Check if the switchback roller and switchback pulley contact each other. |
Check and remedy. |
| Check if the switchback guide is deformed. |
Check and remedy. |
| Defective finisher main PWB. |
Replace the finisher main PWB and check for correct operation. |
| (48) A paper jam in optional document finisher is indicated during copying (paper entry sensor stay jam). Jam code 94 |
Extremely curled paper. |
Change the paper. |
| Defective paper entry sensor. |
With 5 V DC present at CN3-1and CN3-3 on the finisher main PWB, check if CN3-2 and CN3-4 on the main PCB remains low or high when the paper entry sensor is turned on and off. If it does, replace the paper entry sensor. |
| Check if the paper entry guide is deformed. |
Check and remedy. |
| Defective finisher main PWB. |
Replace the finisher main PWB and check for correct operation. |
| (49) A paper jam in optional document finisher is indicated during copying (paper conveying sensor jam). Jam code 95 |
Defective paper conveying sensor. |
With 5 V DC present at CN9-1 on the finisher main PWB, check if CN9-3 on the finisher main PWB remains low or high when the paper conveying sensor is turned on and off. If it does, replace the paper conveying sensor. |
| Check if the paper conveying motor malfunctions. |
Check. |
| Check if the paper conveying roller and paper conveying pulley contact each other. |
Check and remedy. |
| Check if the paper conveying guide is deformed. |
Check and remedy. |
| Defective finisher main PWB. |
Replace the finisher main PWB and check for correct operation. |