OKI C941e
Troubleshooting. 7 aper running jam (Error 381) 3
Jam occurs in the middle of paper running path.
Motor operation check
Check item | Check work | Actions to be taken at NG |
---|---|---|
Feed motor driver, belt motor driver and fuser motor | Confirm that the hopping motor, belt motor and fuser motor work normally by using the Motor & Clutch Test of the self-diagnostic mode. Check if any load exists or not. |
Replace the PU/CU PCB, the faulty motor of either hopping motor or belt motor, or the belt unit. |
Feed motor, belt motor | Remove the FDMRG2CL connector of the PU/CU PCB and check the following at the connector side. Several MΩ between pin-1 – FG Several MΩ between pin-2 – FG Several MΩ between pin-3 – FG Several MΩ between pin-4 – FG Several MΩ between pin-5 – FG |
Replace the PU/CU PCB. |
Jam occurs immediately after paper has reached the fuser.
Motor operation check
Check item | Check work | Actions to be taken at NG |
---|---|---|
Fuser motor | Confirm that the fuser motor works normally by using the Motor & Clutch Test of the selfdiagnostic mode. Check if any load exists or not. |
Replace the PU/ CU PCB, fuser motor, fuser unit, and/or fuser driver gear train (oneway gear). |
Temperature control while fuser belt running
Check item | Check work | Actions to be taken at NG |
---|---|---|
Detected temperatures of the fuser | Check temperatures detected at the fuser belt in the self-diagnostic mode. Has abnormally low (lower than the room temperature) or high (250°C) temperature been detected? | Replace the fuser unit or PU/CU PCB. |
Check the installation condition of fuser unit
Check item | Check work | Actions to be taken at NG |
---|---|---|
Fuser unit | Check that the fuser unit is installed normally. (Is it pushed in down to the bottom-most point?) | Install the fuser unit correctly in the printer. |