• Code: 372
• Description: TD sensor adjustment error: K. 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 (default: 2.5V) ±0.1V
• Causes: • TD sensor harness disconnected, loose or defective • TD sensor defective
• Remedy: 1. Check the harness connection of the TD sensor. 2. Replace the TD sensor.

• Code: 373
• 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 (default: 2.5V) ±0.1V
• Causes: • TD sensor harness disconnected, loose or defective • TD sensor defective
• Remedy: 1. Check the harness connection of the TD sensor. 2. Replace the TD sensor.

• Code: 374
• 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 (default: 2.5V) ±0.1V
• Causes: • TD sensor harness disconnected, loose or defective • TD sensor defective
• Remedy: 1. Check the harness connection of the TD sensor. 2. Replace the TD sensor.

• 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 (default: 2.5V) ±0.1V
• Causes: • TD sensor harness disconnected, loose or defective • TD sensor defective
• Remedy: 1. Check the harness connection of the TD sensor. 2. Replace the TD sensor.

• Code: 388
• Description: Quenching error: K. The drum potential sensor for a color detects 2.0V (Vd: 400V) or more for 0.3 seconds after the charge corona wire has turned off.
• Causes: • Disconnected or broken harness of the quenching lamp • Dirty surface of the quenching lamp glass
• Remedy: 1. Check the harness or harness connection. 2. Clean the surface of the quenching lamp glass.

• Code: 389
• Description: Quenching error: C. The drum potential sensor for a color detects 2.0V (Vd: 400V) or more for 0.3 seconds after the charge corona wire has turned off.
• Causes: • Disconnected or broken harness of the quenching lamp • Dirty surface of the quenching lamp glass
• Remedy: 1. Check the harness or harness connection. 2. Clean the surface of the quenching lamp glass.

• Code: 390
• Description: Quenching error: M. The drum potential sensor for a color detects 2.0V (Vd: 400V) or more for 0.3 seconds after the charge corona wire has turned off.
• Causes: • Disconnected or broken harness of the quenching lamp • Dirty surface of the quenching lamp glass
• Remedy: 1. Check the harness or harness connection. 2. Clean the surface of the quenching lamp glass.

• Code: 391
• Description: Quenching error: Y. The drum potential sensor for a color detects 2.0V (Vd: 400V) or more for 0.3 seconds after the charge corona wire has turned off.
• Causes: • Disconnected or broken harness of the quenching lamp • Dirty surface of the quenching lamp glass
• Remedy: 1. Check the harness or harness connection. 2. Clean the surface of the quenching lamp glass.