Samsung MultiXpress K4 Series Service Manual page 366

4. Troubleshooting
► Error Code
H2–6726
H2–6727
► Error message
Finisher Stapler door is open. Close it
Finisher Top door is open. Close it
► Symptom
Finisher door is not closed.
► Troubleshooting method
1) Close door to do finisher initialization. If error does not disappear, follow the instructions below :
2) Does finisher door cover can close well?
a) The finisher door cover itself can be closed well.
b) The both of the finisher door covers can push door open sensor switch well.
c) The finisher door open sensor switch can be pushed well.
d) Replace finisher cover door or switch.
3) Does finisher input sensor work well?
a) Make sure finisher input sensor cable is connected well to the sensor connector.
b) Make sure finisher input sensor cable is connected well to the main board connector.
c) Replace the finisher input sensor(JC90-01301A).
d) Replace the finisher main board(JC92-02774A).
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