• Code: E004-0001
• Description: Error in detection of welding with fixing relay
  Welding of fixing relay on the AC Driver PCB
• Remedy: 1. Replace the AC Driver PCB (replacement is necessary due to welding of the relay). Other fixing-related error occurs (highly possible of E001) 2. Perform the remedy for the error occurred.

• Code: E009-0000
• Description: Error in engagement
  Unable to detect ON with the Fixing Pressure Sensor although 5 seconds have passed.
• Remedy: 1. Turn OFF and then ON the power. 2. Remove and then reinstall the Fixing Assembly. 3. Go through the following to move M21: COPIER > FUNCTION > PART-CHK > MTR. If the motor rotates properly: 4-1. Replace the Fixing Drive Assembly. 5-1. Replace the DC Controller PCB (UN1). If the motor does not work properly: 4-2. Identify and replace the faulty gear. 5-2. Replace the Motor.

• Code: E009-0001
• Description: Error in disengagement
  Unable to detect OFF with the Fixing Pressure Sensor although 5 seconds have passed.
• Remedy: 1. Turn OFF and then ON the power. 2. Remove and then reinstall the Fixing Assembly. 3. Go through the following to move M21: COPIER > FUNCTION > PART-CHK > MTR. If the motor rotates properly: 4-1. Replace the Fixing Drive Assembly. 5-1. Replace the DC Controller PCB (UN1). If the motor does not work properly: 4-2. Identify and replace the faulty gear. 5-2. Replace the Motor.

• Code: E009-0002
• Description: Pressure error (it is highly possible that grease is scattered on the surface of the cam.)
  Unable to detect stopping of the cam at the specified position even if pressure is applied 10 times.
• Remedy: Clean the scattered grease and excess grease on the gear at the rear side of the host machine. Procedure is as follows. 1. Remove the Fixing Assembly. 2. Remove the Gear Cover at the rear side of the host machine, and remove the Pressure Release Stopper and the Pressure Release Support Plate (so that the gear is easily cleaned). 3. Wipe off the scattered grease around the Pressure Release Cam and the Pressure Plate with lint-free paper moistened with alcohol. 4. Wipe off the excess grease on the side of the gear and the shaft.

• Code: E012-0101
• Description: Y Drum Encoder 1 and 2 signal error
  Y Drum Encoder 1 and 2 signal error (It was detected that the motor was rotating, but not the encoders.)
• Remedy: 1. Check connection of drum encoder sensor 1 and 2 (UN31, UN32). 2. Check that the drum encoder sensor Wheel is properly installed. 3. Check connection of the Drum Driver PCB (UN4). 4. Manually turn the Rotor of the Drum Motor counterclockwise and check that the drum encoder sensor Wheel rotates. -> If the wheel does not rotate, replace the Drum Drive Unit. 5. Take out the drum encoder sensor to clean the Sensor and the Wheel. 6. Replace the drum encoder sensor. 7. Replace the Drum Driver PCB (UN4).

• Code: E012-0102
• Description: Faulty signal with Y drum encoder sensor 1
  The signal was not detected for 100 msec or more.
• Remedy: 1. Check connection of drum encoder sensor 1. 2. Take out drum encoder sensor 1 (UN31) to clean the Sensor. 3. Replace drum encoder sensor 1. 4. Check if the harness of the drum encoder sensor is faulty (replace the harness if it’s disconnected). 5. Replace the Drum Driver PCB (UN4).

• Code: E012-0103
• Description: Faulty signal with Y drum encoder sensor 2
  The signal was not detected for 100 msec or more.
• Remedy: 1. Check connection of drum encoder sensor 2 (UN32). 2. Take out drum encoder sensor 2 to clean the Sensor. 3. Replace drum encoder sensor 2. 4. Check if the harness of the drum encoder sensor is faulty (replace the harness if it’s disconnected). 5. Replace the Drum Driver PCB (UN4).

• Code: E012-0104
• Description: Failure in Y drum encoder sensor Wheel
  Failure is detected with the Y drum encoder sensor Wheel
• Remedy: 1. Take out the drum encoder sensor to clean the Sensor (UN31, UN32) and the Wheel. 2. Replace the drum encoder sensor Wheel. 3. Replace the drum encoder sensor. 4. Replace the Drum Driver PCB (UN4).