Samsung MultiXpress X4 Series Service Manual page 434

4. Troubleshooting
► Error Code
M1–1213
M2–1131
► Error message
Paper jam in Tray 2.
► Symptom
Paper jam has occurred in tray2.
► Troubleshooting method
1) Open the side cover and check if a foreign substance or paper is jammed inside the machine.
2) Remove tray2 and remove the jammed paper.
3) If this jam error occurs frequently, check the rollers of the pick up unit1.
a) Remove tray1 and tray2.
b) Check if the pick up/ reverse/ forward rollers are assembled correctly.
c) If the pick up/ reverse/ forward rollers are worn out or contaminated, replace the defective roller(JC93–00540A).
(Refer to 3.2.5. Pickup_Reverse_Forward roller)
4) If the problem persists, check the pickup unit2 and feed sensor.
a) Check if the pickup unit2 and feed sensor operate correctly.
b) Check if the pickup unit2 harness is connected to the main board correctly.
c) Check if the connector of the Guide-feed assembly is connected correctly.
d) Check if the harness of pickup unit and feed sensor are connected correctly.
e)
5) If the problem persists, check the pickup unit2.
a) Remove the pickup unit2 and check the actuator and photo-sensor.
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