• Code: SC376
• Description: M-TD sensor lower detection abnormal - Definition - [B] TD sensor output (Vt) becomes lower than 0.5 V during copy cycles.
• Causes: • TD sensor defective • Main control board defective • Toner supply system defective

• Code: SC377
• Description: C-TD sensor lower detection abnormal - Definition - [B] TD sensor output (Vt) becomes lower than 0.5 V during copy cycles.
• Causes: • TD sensor defective • Main control board defective • Toner supply system defective

• Code: SC380
• Description: Drum potential sensor calibration error - Definition - [D] When performing the process control self-check, the drum potential sensor is not calibrated properly. The previous settings are used in this case. If there are no previous settings, the defaults are used.
• Causes: • Drum potential sensor defective • Interface board 1 defective • Main control board defective • High voltage supply board - B defective

• Code: SC381
• Description: Charge potential abnormal - Definition - [D] When performing the process control self-check, the charge potential of the drum is not in the proper range.
• Causes: • High voltage supply board- C/G defective • Main control board defective

• Code: SC382
• Description: VD adjustment error - Definition - [D] When doing the process control self-check, VD does not come within 5 V of the target after 30 trials. The previous settings for VG, VB, and ILD are used in this case. If there are no previous settings, the defaults are used.
• Causes: • High voltage supply board - C/G defective • Main control board defective

• Code: SC383
• Description: VL adjustment error - Definition - [D] When performing the process control self-check, VL does not come within 5 V of the target after 30 trials. The previous settings for VG, VB, and ILD are used in this case. If there are no previous settings, the defaults are used.
• Causes: • LD drive board defective • IPU board defective

• Code: SC384
• Description: LD exposure abnormal - Definition - [D] When performing the process control self-check, the potentials on the 14-step gradation pattern do not come within the target range.
• Causes: • LD drive board defective • IPU board defective

• Code: SC390
• Description: ID sensor adjustment error - Definition - [D] When performing the process control self-check, Vsg adjustment does not result in 4.0 ± 0.2 V.
• Causes: • ID sensor defective • Main control board defective • ID sensor too dirty