Samsung MultiXpress K4 Series Service Manual page 372

4. Troubleshooting
► Error Code
H2–6740 / H2–6741 / H2–6742 / H2–6743
► Error message
Finisher Failure: #H2-67xx. Check finisher
► Symptom
Main Tray failed to leave stacker height sensor during initializing. (H2-6740)
Main Tray failed to reach stacker height sensor during initializing. (H2-6741)
Main Tray failed to leave stacker height sensor during printing. (H2-6742)
Main Tray failed to reach stacker height sensor during printing. (H2-6743)
► Troubleshooting method
1) If there is jammed paper on the Main Tray, removing paper manually. Open and close finisher stapler door or jam
cover to check if finisher executes initialization process. If Main Tray still doesn't go back to home position and
error does not disappear, follow the instructions below:
2) Does finisher stacker height sensor work well?
a) Make sure stacker height sensor cable is connected well to the sensor connector.
b) Make sure stacker height sensor cable is connected well to the main board connector.
c) Replace the stacker height sensor.
d) Replace the finisher main board.
3) Does finisher Main Tray motor work well?
a) Make sure finisher Main Tray motor cable is connected well to the motor connector.
b) Make sure finisher Main Tray motor cable is connected well to the main board connector.
c) Replace the finisher Main Tray motor.
4) Does finisher Main Tray parts work well?
a) Make sure Main Tray parts can move or rotate smoothly.
b) Make sure there is no any mechanical interference to stop moving or rotating.
c) Make sure the belt is tight on the correct position, if it has the belt.
5) Does finisher Main Tray motor gear set work well?
a) Make sure gear set can rotate smoothly.
b) Make sure each gear is not broken.
c) Replace the gear set.
6) Check if any debris existed. Please make sure to remove any debris.
4-137
(JC81-07637A / JC81-07636A)
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