Samsung SL-X7600GX Service Manual page 389

► Error Code
H1–1451 / H1–1452 / H1–1454
► Error message
Paper is low in Tray 4. Load paper.
Paper is empty in Tray 4. Load paper.
► Symptom
Paper in tray4 is less than 10%. / The photo sensor is defective.
► Troubleshooting method
1) Remove tray4. Load the paper in tray4.
2) If paper is loaded but error message has not disappeared, check the following.
a) Remove the DCF pick up unit2.
b) Check if the photo sensor in the DCF pick up unit2 is contaminated. If so, clean it.
c) If the photo sensor(0604-001393) is defective, replace it.
d) If the actuator(JC66-04399A) is defective, replace it.
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4. Troubleshooting
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