Samsung SL-X7600GX Service Manual page 406

4. Troubleshooting
► Error Code
H1-4453
H1-4553
► Error message
Input System Failure #H1-4453 : Pull Tray 4 out and insert it.
Input System Failure #H1-4553 : Pull Tray 5 out and insert it.
► Symptom
The paper is not fed from the LCT.
► Troubleshooting method
1) Turn the machine off then on.
2) If the problem persists, turn the machine off.
3) Remove the Cover-Right and Cover-Rear after removing 16 screws.
4) Check if the connection between the LCT pick up drive and LCT PBA is correct.
5) If the connection is OK, replace the drive unit(JC93–01112A).
6) If the problem persists, check the following.
a) Remove the LCT pick up unit.
b) Check if the photo sensor in the LCT pick up unit is contaminated, clean it.
c) If the photo sensor(0604-001393) is defective, replace it.
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