Oki ES3640MFP Service & Troubleshooting Manual page 79

381： Paper Jam
Condition
Paper jam has occurred while the paper was being transported by the registration roller, the belt unit or the fuser.
1. The EXIT sensor does not change to ON-state within the predefined time after the WR sensor changed to ON-state.
2. The IN2 sensor does not return to OFF-state within the predefined time after the IN1 sensor returned to OFF-state.
3. The WR sensor does not return to OFF-state within the predefined time after the IN2 sensor returned to OFF-state.
The printer stops printing immediately when the jam occurs.
Cause
There are several possible causes for this problem.
2.1 Registration rollers cannot transport paper because they have become dirty with paper dust, toner, etc., and this causes the
paper to slip.
2.2 A piece of paper, foreign substance, etc., has got stuck in the IN2, WR or EXIT sensor lever.
2.3 IN2, WR or EXIT sensor motion failure
2.4 Belt unit or the fuser unit is not transporting the paper.
How to remove the jammed paper
Open the top cover - Push the blue lever of the basket handle to release the lock of the basket - Pull up the basket
Remove all the sheets that have jammed - Pull up the fuser's blue levers (both sides) and remove the jammed paper in the
direction indicated by the arrow.
Pull down the basket and confirm that the basket is locked, and then close the top cover.
If you have been performing continuous printing, some paper may still remain in other areas. After opening and closing the
cover, if other error code is displayed, follow the jam clearance method of that code.
Check Points
Open the side cover, and check the following areas and clean them.
Jam indication though there seems to be no
jammed paper:
Check for a piece of paper or foreign
substance in the IN1 or 2 sensor.
Check if the IN1 or 2 sensor arm moves
up and down smoothly.
Frequent Jams:
Check the registration roller and clean
thoroughly.
Check for a piece of paper or
foreign substance in the paper path.