Samsung MultiXpress M537x series Service Manual page 257

4. Troubleshooting
5) Check if the Paper Path Diverter gears(cam) (JR10 3302) are assembled correctly or operated well.
6) Check if the gears(cam) (JR10 3302) are broken. If it is defective, replace the broken gears(cam).
7) Replace the Paddle Unit(JR10 3130).
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