Stain On The Paper Back Side - Samsung MultiXpress K4 Series Service Manual

4.7.11. Stain on the paper back side

A. Typical faulty images
B. Troubleshooting procedure
Step Check item
1 Is the transfer roller dirty or worn out?
2 Are the fuser belt and pressure roller dirty?
3 Check the pressure roller surface is damaged or
scratched.
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Action
Clean or replace the Transfer roller Assembly.
Clean the fuser belt and pressure roller.
Replace Fuser unit.
(Refer to 3.2.2.5.)
4. Troubleshooting
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