The DC controller determines that a failure occurred in the drum motors (M6 to 9) in any of the following cases. The machine stops operation and displays "E012

(Drum motor error)" on the control panel.

- Drum motor start-up failure

The interval of the drum motor speed signal is not settled at the specified interval even when 2.5 seconds elapse after start-up of the drum motor.

- Drum motor rotation failure

After the drum motor speed signal is settled at the specified interval, it becomes out of the specified interval for more than 2 seconds continuously.

11.1.5 ETB motor failure detection

The DC controller determines that a failure occurred in the ETB motor (M5) in any of the following cases. The machine stops operation and displays "E012 (ETB

motor failure)" on the control panel.

- ETB motor start-up failure

The interval of the ETB motor speed signal is not settled at the specified interval even when 3.5 seconds elapse after start-up of the ETB motor.

- ETB motor rotation failure

After the ETB motor speed signal is settled at the specified interval, it becomes out of the specified interval for more than 2 seconds continuously.

11.1.6 Fixing motor failure detection

The DC controller determines that a failure occurred in the fixing motor (M1) in any of the following cases. The machine stops operation and displays "E014 (Fixing

motor failure)" on the control panel.

- Fixing motor start-up failure

The interval of the fixing motor speed signal is not settled at the specified interval even when 2.5 seconds elapse after start-up of the fixing motor.

- Fixing motor rotation failure

After the fixing motor speed signal is settled at the specified interval, it becomes out of the specified interval for more than 2 seconds continuously.

11.1.7 Main Unit Fan Failure Detection

The DC controller determines that a failure occurred in the main unit fan (FM1) when receiving the main unit fan lock signal for more than 10 times consecutively.

The machine stops operation and displays "E804 (Main unit fan failure)" on the control panel.

11.1.8 Duplex Fan Failure Detection

The DC controller determines that a failure occurred in the duplex fan (FM2) when receiving the duplex fan lock signal for more than 10 times consecutively. The

machine stops operation and displays "E805 (Duplex fan failure)" on the control panel.

Chapter 11

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Table of Contents