SC No. Type Error Name/Error Condition/Major Cause/Solution
• Transport motor error/connector missing
• Left tray transfer fence HP sensor error/connector missing
• Harness broken
• Bank control board defective
• Paper overload
• Foreign object, such as paper scrap, is caught between the left tray
and the tray transport motor
• Paper set incorrectly
• Timing belt damage/dropout
• Timing pulley damage/dropout
• Transfer fence defective
• Foreign object, such as paper scrap, is caught inside the left tray
Remove the jammed paper or slip of paper from the tray, and check if the
SC occurs by turning the main power OFF then ON. If the SC occurs
again, do the following steps. Check if the SC reoccurs by cycling the
power after each step.
1. Check if all connectors in Tray 3 are connected securely. Reconnect
the connectors if they are disconnected, or loose.
2. Check the harness in Tray 3. Replace the harnesses if it is
disconnected, or damaged.
3. Check if the motor runs, sensors turn OFF/ON, has no overloads,
and is properly driven. Replace the parts if there are any defects.
4. Check if there are any signs of a short circuit. Replace the parts if
there are any defects.
SC No. Type Error Name/Error Condition/Major Cause/Solution
SC504-21 B 4th Tray Lift Error (Lower Tray: Paper Feed Unit PB3160 (D693))
6. Troubleshooting
906
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