Drum Motor Failure Detection; Etb Motor Failure Detection; Fixing Motor Failure Detection; Main Unit Fan Failure Detection - Canon Color imageCLASS MF9170c Service Manual

10.1.4 Drum motor failure detection

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
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.

10.1.5 ETB motor failure detection

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
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.

10.1.6 Fixing motor failure detection

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
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.

10.1.7 Main Unit Fan Failure Detection

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
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.

10.1.8 Duplex Fan Failure Detection

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
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 10
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