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ERROR CODE AND TROUBLESHOOTING
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[CD70] Waste toner box mixing paddle locked
Do the paddles in the waste toner box rotate? (Actually make them rotate.)
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NO  1. Replace the waste toner box.
YES
Is the waste toner paddle motor rotating? (Perform the output check: 03-414)
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NO  1. Check if the connector or the relay connector of the waste toner paddle
motor is disconnected.
2. Check if there is any damage or abnormality in the gears on the driving
cascade of the waste toner paddle motor.
3. Check if the connector CN359 on the LGC board is disconnected.
4. Check if the connector pin is disconnected or the harness is broken.
5. Check if the conductor pattern on the LGC board is short circuited or open
circuited.
6. Replace the waste toner paddle motor.
7. Replace the LGC board.
YES
Is the waste toner paddle motor lock detection sensor operating normally? (Perform output
check: 03-[FAX] OFF/[1]/[C])
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NO 
To judge it is an error, check if the sensor detects each status of normal display
and highlighted display.
1. Check if the connector or the relay connector of the waste toner paddle
motor lock detection sensor is disconnected.
2. Check if the connector CN359 on the LGC board is disconnected.
3. Check if the connector pin is disconnected or the harness is broken.
4. Check if the conductor pattern on the LGC board is short circuited or open
circuited.
5. Replace the waste toner paddle motor lock detection sensor.
6. Replace the LGC board.
YES
1. Check if the conductor pattern on the LGC board is short circuited or open circuited.
2. Replace the LGC board.
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