| Problem |
Causes/check procedures |
Corrective measures |
| (21) 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. |
| (22) 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. |
| (23) 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. |
| (24) 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. |
| (25) 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. |