Samsung MULTIXPRESS CLX-9251 Series Service Manual page 419

7) DADF paper jam (Multi-feed)
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Symptom : Paper stops between the ADF roller and the registration roller of the DADF and a paper jam occurs.
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Troubleshooting
Guide pickup replacement is required when a Regi Out Jam occurs during multi-feeding. This also stabilizes paper path.
NOTE
The friction pad is also replaced when the Guide Pickup is replaced.
[Replacement Procedure]
1) Open the Cover-Open Assembly.
2) Remove the DADF separation pad then replace it with new one.
3) Remove the Guide Pickup by pressing the side as shown below.
4) Assemble the new Guide Pickup.
5) Update the firmware as the latest version.
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4. Troubleshooting
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