Samsung MultiXpress K4 Series Service Manual page 367

► Error Code
H2–6728 / H2–6729 / H2–6730 / H2–6731
► Error message
Finisher Failure: #H2-67xx. Check finisher.
► Symptom
Stapler failed to leave home position during Stapling. (H2-6728)
Stapler failed to reach home position during Stapling. (H2-6729)
Stapler failed to leave home position during Self-Priming. (H2-6730)
Stapler failed to reach home position during Self-Priming. (H2-6731)
► Troubleshooting method
1) If there is jammed paper on the stapler, removing paper manually. Open and close finisher stapler door or jam cover
to check if finisher executes initialization process. If stapler still doesn't go back to home position and error does
not disappear, follow the instructions below :
2) Does finisher stapler move well?
a) Make sure stapler moving motor cable is connected well to the stapler motor connector.
b) Make sure stapler moving motor cable is connected well to the main board connector.
c) Check the sensor position and harness condition.
d) Check the sensor plug or encoder condition.
3) Does finisher stapler's gear set move well?
a) Make sure gear set can rotate smoothly.
b) Make sure each gear is not broken.
c) If you need, replace the stapler assembly.
4) Check if any debris(staple) existed. Please make sure to remove any debris.
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4. Troubleshooting
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