Sharp AR-651 Service Handbook page 190

[EA4] Finisher front door opened during printing
Is there any paper remaining on the transport path in the finisher or main unit?
YES
NO
Is the finisher connected with the main unit?
NO
YES
Is the connector J12 on the finisher controller PC board disconnected?
Is the harness connecting the finisher controller PC board and joint sensor (PI15) open-circuited?
YES
NO
Is the joint sensor working properly?
NO
YES
Is the door of the finisher closed?
NO
YES
Is the connector J12 on the finisher controller PC board disconnected?
Is the harness connecting the finisher controller PC board and door opening sensor (PI16) open-circuited?
YES
NO
Is the door opening sensor working properly?
NO
YES
Is the connector J5 on the finisher controller PC board disconnected?
Is the harness connecting the finisher controller PC board and door switch (MS1) open-circuited?
YES
NO
AR-651/810 TROUBLE SHOOTING
Remove the paper.
Connect the finisher with the main unit.
Connect the connector securely. Replace the harness.
1. Connect the connector of the joint sensor securely.
2. Replace the joint sensor.
Close the door.
Connect the connector securely. Replace the harness.
1. Connect the connector of the door opening sensor securely.
2. Replace the door opening sensor.
Connect the connector securely. Replace the harness.
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