| Problem |
Causes/check procedures |
Corrective measures |
| (26) A paper jam in optional document finisher is indicated during copying (paper jam during paper insertion to the finisher). Jam code 81 |
Document finisher |
| Extremely curled paper. |
Change the paper. |
| Defective paper entry sensor. |
With 5 V DC present at CN14-1 and CN14-3 on the finisher main PWB, check if CN14-2 and CN14-4 on the finisher main PWB remains low or high when the paper entry sensor is turned on and off. If it does, replace the paper entry sensor. |
| Defective finisher main PWB. |
Replace the finisher main PWB and check for correct operation. |
| Built-in finisher |
| Extremely curled paper. |
Change the paper. |
| Defective paper conveying switch. |
With 5 V DC present at YC2-23 on the finisher control PWB, check if YC2-21 on the finisher control PWB remains low or high when the paper conveying switch is turned on and off. If it does, replace the paper conveying switch. |
| Check if the feedshift roller or feedshift pulley is deformed. |
Check and remedy. |
| (27) A paper jam in optional document finisher is indicated during copying (finisher stapler jam). Jam code 82 |
Document finisher |
| Defective staple home position sensor. |
With 5 V DC present at CN10-2 on the finisher main PWB, check if CN10-5 on the finisher main PWB remains low or high. If it does, replace the stapler section. |
| Built-in finisher |
| The stapler is blocked with a staple. |
Remove the stapler cartridge, and check the cartridge and the stapling section of the stapler. Remove the staple if any. |
| Defective stapler section. |
With 5 V DC present at YC2-24 on the finisher control PWB, check if YC2-19 on the finisher control PWB remains low or high. If it does, replace the stapler section. |
| (28) A paper jam in optional document finisher is indicated during copying (eject sensor stay jam). Jam code 83 |
Document finisher |
| Defective eject sensor. |
With 5 V DC present at CN5-4 on the finisher main PWB, check if CN5-6 on the finisher main PWB remains low or high when the eject sensor is turned on and off. If it does, replace the eject sensor. |
| Check if the paper conveying motor malfunctions. |
Check and remedy. |
| 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. |