Samsung MultiXpress K7 Series Service Manual page 360

4. Troubleshooting
b) If the connection is OK, replace the HCF feed drive unit(JC93-01114A).
7) Check the HCF pick up motor.
a) Check if the HCF pick up motor cable is connected correctly.
b) If the connection is OK, replace the HCF pick up drive unit(JC93-01115A).
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