Error Name/Error Condition/Major Cause/Solution
Paper Feed Unit Communication Error (Tray 4)
A communication error is detected from the paper feed unit 4, 10 times
consecutively.
• Paper feed tray 4 defective
• Main board defective
• IOB (PCB17) defective
• Paper feed tray 4 defective
Check the connection between the main machine and paper feed tray 4.
• Main board defective
1. Reconnect the following connector.
• IOB (PCB17) – Main Board connector
2. If the connector is broken, shorted, or grounded, replace the connector.
3. Replace the main board.
• IOB (PCB17) defective
1. Update the engine software to the latest version.
2. Replace the IOB (PCB17).
Error Name/Error Condition/Major Cause/Solution
Paper Feed Unit Communication Error (Tray 5)
A communication error is detected from the paper feed unit 4, 10 times
consecutively.
• Paper feed tray 4 defective
• Main board defective
• IOB (PCB17) defective
• Paper feed tray 4 defective
Check the connection between the main machine and paper feed tray 4.
• Main board defective
1. Reconnect the following connector.
• IOB (PCB17) – Main Board connector
2. If the connector is broken, shorted, or grounded, replace the connector.
3. Replace the main board.
• IOB (PCB17) defective
1. Update the engine software to the latest version.
2. Replace the IOB (PCB17).
Error Name/Error Condition/Major Cause/Solution
BiCU (PCB16) – IOB (PCB17) Connection Error