Samsung SL-X7600GX Service Manual page 495

2) Machine can not feed the paper.
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Symptom : The machine can not feed the paper from Tray1 or Tray2.
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Cause :
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Feed motor problem
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Feed motor connection problem
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Main board defect
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Troubleshooting
1) Check the Feed motor operation.
a) Open the side cover, and push the cover switch with paper forcibly.
b) Enter the service mode.
c) Select the menu below.
(EDC Mode > Diagnostics > Engine Diagnostics > Engine Test Routine > Feed motor > on/off )
Check the two feed rollers operating status.
d) If the feed rollers can not rotate, open the rear cover and check the motor and gears.
2) Check the connection between the main board and feed motor.
3) If the problem persists, replace the main board.
3) Envelope wrinkle
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Symptom :
Envelope is wrinkled when printing from MP tray.
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Troubleshooting
1) Enter SVC mode.
2) Select "Envelope Rotate". (Service Functions > Envelope Rotate)
3) Select one menu among 'off', '90 degree', '180 degree.
(Refer to 4.5.6.18. Envelope Rotate)
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4. Troubleshooting
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