| Problem |
Causes/check procedures |
Corrective measures |
| (22) An original jams in DP is indicated during copying (an original jam in the original conveying section 1). Jam code 71 |
Defective DP timing switch. |
Run maintenance item U244 and turn the DP timing switch on and off manually. Replace the switch if indication of the corresponding switch is not light. |
| Check if the original conveying motor malfunctions. |
Run maintenance item U243 and select the original conveying motor to be turned on and off. Check the status and remedy if necessary. |
| (23) An original jams in DP is indicated during copying (an original size error jam). Jam code 72 |
Defective DP timing switch. |
Run maintenance item U244 and turn the DP timing switch on and off manually. Replace the switch if indication of the corresponding switch is not light. |
| Check if the original conveying motor malfunctions. |
Run maintenance item U243 and select the original conveying motor to be turned on and off. Check the status and remedy if necessary. |
| (24) An original jams in DP is indicated during copying (an original jam in the original conveying section 2). Jam code 73 |
Defective DP timing switch. |
Run maintenance item U244 and turn the DP timing switch on and off manually. Replace the switch if indication of the corresponding switch is not light. |
| Check if the original conveying motor malfunctions. |
Run maintenance item U243 and select the original conveying motor to be turned on and off. Check the status and remedy if necessary. |
| (25) An original jams in DP is indicated during copying (an original jam in the original conveying section 3). Jam code 74 |
Defective DP timing switch. |
Run maintenance item U244 and turn the DP timing switch on and off manually. Replace the switch if indication of the corresponding switch is not light. |
| Check if the original conveying motor malfunctions. |
Run maintenance item U243 and select the original conveying motor to be turned on and off. Check the status and remedy if necessary. |
| (26) An original jams in DP is indicated during copying (an original jam in the original switchback section). Jam code 75 |
Defective DP timing switch. |
Run maintenance item U244 and turn the DP timing switch on and off manually. Replace the switch if indication of the corresponding switch is not light. |
| Check if the original switchback motor malfunctions. |
Run maintenance item U243 and select the original switchback motor to be turned on and off. Check the status and remedy if necessary. |
| (27) A paper jam in finisher is indicated during copying (jam between the finisher and machine). Jam code 80 |
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. |
| (28) A paper jam in finisher is indicated during copying (finisher paper entry nonarrival jam). Jam code 81 |
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. |
| (29) A paper jam in finisher is indicated during copying (finisher paper entry jam). Jam code 83 |
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 visually and replace. |
| (30) A paper jam in finisher is indicated during copying (finisher eject jam). Jam code 84 |
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 visually and replace. |
| Check if the eject roller or eject pulley is deformed. |
Check visually and replace. |