• Code: 373
• Description: TD sensor adjustment error: M
  During TD sensor initialization, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of the specified value with SP3238-001 to -004 (default: 2.7V) +- 0.2V
• Causes: Heat seal not removed from a new developer pack. TD harness sensor disconnected, loose or defective. TD sensor defective. Harness between TD sensor and drawer disconnected, defective.
• Remedy: 1. Remove the heat seal from each PCU. 2. Replace the defective PCU.

• Code: 374
• Description: TD sensor adjustment error: C
  During TD sensor initialization, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of the specified value with SP3238-001 to -004 (default: 2.7V) +- 0.2V
• Causes: Heat seal not removed from a new developer pack. TD harness sensor disconnected, loose or defective. TD sensor defective. Harness between TD sensor and drawer disconnected, defective.
• Remedy: 1. Remove the heat seal from each PCU. 2. Replace the defective PCU.

• Code: 375
• Description: TD sensor adjustment error: Y
  During TD sensor initialization, the output value of the black, magenta, cyan, or yellow TD sensor is not within the range of the specified value with SP3238-001 to -004 (default: 2.7V) +- 0.2V
• Causes: Heat seal not removed from a new developer pack. TD harness sensor disconnected, loose or defective. TD sensor defective. Harness between TD sensor and drawer disconnected, defective.
• Remedy: 1. Remove the heat seal from each PCU. 2. Replace the defective PCU.

• Code: 380
• Description: Drum gear position sensor error
  The machine does not detect the drum position signal for three second at the drum phase adjustment.
• Causes: Dirty or defective drum gear position sensor
• Remedy: 1. Replace the drum gear position sensor. 2. Replace the PCU.

• Code: 400
• Description: ID sensor adjustment error
  When the Vsg error counter reaches "3", the machine detects "SC400". The Vsg error counter counts "1" when the Vsg detected by ID sensor is more than the value (default: 4.5V) specified with SP3234-005 or less than the value (default: 3.5V) specified with SP SP3234-006.
• Causes: Dirty or defective ID sensor. Defective ID sensor shutter
• Remedy: 1. Check the harness of the ID sensor. 2. Clean or replace the ID sensor.•After replacing the ID sensor, input the ID sensor correction coefficient with SP3362-013 to -018. For details, refer to "ID sensor board" in the Replacement and Adjustment section. 3. Replace the IOB. 4. Replace the image transfer belt unit.

• Code: 441
• Description: Image transfer unit motor error
  The motor LOCK signal is not detected for more than two seconds while the motor START signal is on.
• Causes: Motor overload. Defective image transfer unit motor
• Remedy: 1. Replace the image transfer belt unit. 2. Replace the IOB.

• Code: 442
• Description: Image transfer belt contact motor error
  The image transfer belt contact sensor does not detect the movement of actuator at the sensor while the polygon motor rotates.
• Causes: Dirty image transfer belt contact sensor. Defective image transfer belt contact motor. Disconnected connector of image transfer belt contact sensor or motor. Disconnected cable.
• Remedy: 1. Replace the image transfer belt contact sensor. 2. Replace the image transfer belt contact motor.

• Code: 443
• Description: Image transfer unit error
  The machine detects the encoder sensor error.
• Causes: Defective encoder sensor. Image transfer unit installation error. Defective image transfer unit motor
• Remedy: 1. Check if the image transfer unit is correctly set. 2. Replace the image transfer unit motor. 3. Replace the image transfer unit.