Samsung CLP-680 Series Service Manual page 69

In optional tray
1) Take off the optional cassette.
2) Remove the jammed paper by gently pulling it straight
out.
3) Reinstall the optional cassette.
If you do not see the paper in this area, stop and go to
next step:
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4. Alignment and Troubleshooting
4) Open the rear cover.
5) Remove the jammed paper by gently pulling it straight
out.
6) Close the rear cover.
4-5