Samsung SL-M4580FX Service Manual page 190

4. Troubleshooting
6) Check if the AS-SPRING_ES is deformed or assembled properly.
7) Check if the Press D-cut of the Gear-Lifting(JC81-08478A) is broken.
8) If the problem persists after checking No. 1~7, replace the SCF board(JC92-02754A).
9) If the problem persists, replace the Drop connector harness.
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