Samsung MultiXpress K7 Series Service Manual page 459

3) During copy or scan job, the original paper JAM and U3–3213 error occur.
•
Symptom :
-
During copy or scan job, the original paper JAM and U3–3213 error occur. (SL-K7xxx LX series / SL-X7xxx
LX series)
•
Troubleshooting
1) Check if the "Sponge-Damper Separation" is moved to other position.
2) If yes, refer to following guide.
a) Remove 3 screws.
b) Remove the linker pressing its upper side to the inner direction. And then, remove the front cover.
c) Remove 4 screws.
Copyright© 1995-2017 SAMSUNG. All rights reserved.
4. Troubleshooting
4-208