Target Part/SP No.:Right Door Open/Close Sensor (S17) / SP5-803-026 (Right Door Open/Close Sensor)
Cause verification  | Problem Judgement  | 
|---|---|
Manually press the referenced switch (Done after opening the right door)  | 1: Open  | 
Open the right door  | 0: Close  | 
Solution:
- Reconnect the connector.
 - Replace the sensor.
 - Replace the Paper Transport IOB (PCB1).
 - Replace the harness.
 
Target Part/SP No.:Duplex Guide Plate Open/Close Sensor (S4) / SP5-803-027 (Tray Full Exit Sensor)
Cause verification  | Problem Judgement  | 
|---|---|
Manually press the referenced switch (Done after opening the duplex guide plate)  | 1: Open  | 
Open the duplex guide plate.  | 0: Close  | 
Solution:
- Reconnect the connector.
 - Replace the sensor.
 - Replace the Paper Transport IOB (PCB1).
 - Replace the harness.
 
Pick-up Arm
Check the switch for the pick-up arm to see if there are any defects.  | Replace the 2nd paper feed tray.  |