• Code: SC399
• Description: Drum motor error 4: Y When the drum motor of the black, magenta, cyan, or yellow PCU starts, the machine cannot detect a LOCK signal within 2 sec. The motor is trying to rotate but there is an excessive load on the drum shaft. The motor has no traction (due to a bent cleaning blade, for example).
• Remedy: • PCU drum dirty • PCU defective • Motor harness defective • DRB (Drive board) defective • Drum motor defective • Insufficient lubrication on a drum. Open PCU and apply toner to the drum surface

• Code: SC400
• Description: ID sensor error 1: Calibration Before adjustment Vsg_reg<0.5 but Vsg_reg could not be adjusted to the target Vsg_reg = 4.0±0.2V during process control.
• Remedy: • ID sensor harness disconnected, loose, defective • ID sensor dirty • ID sensor defective • ITB unit drawer connector dirty

• Code: SC410
• Description: ID sensor error 2: Development γ K Development gamma for black, magenta, cyan, or yellow is not within range (0.3 to 6.0). Process control halts when this SC is issued.
• Remedy: • Toner density not normal: Refer to the procedure for process control self-check error codes 55 to 59 to 59, and 61 (section 4.2.4) • Potential sensor defective • Laser diode not firing • ITB separation for CMY abnormal • Transfer power pack defective • ID sensor defective

• Code: SC411
• Description: ID sensor error 3: Development γ M Development gamma for black, magenta, cyan, or yellow is not within range (0.3 to 6.0). Process control halts when this SC is issued.
• Remedy: • Toner density not normal: Refer to the procedure for process control self-check error codes 55 to 59 to 59, and 61 (section 4.2.4) • Potential sensor defective • Laser diode not firing • ITB separation for CMY abnormal • Transfer power pack defective • ID sensor defective

• Code: SC412
• Description: ID sensor error 4: Development γ C Development gamma for black, magenta, cyan, or yellow is not within range (0.3 to 6.0). Process control halts when this SC is issued.
• Remedy: • Toner density not normal: Refer to the procedure for process control self-check error codes 55 to 59 to 59, and 61 (section 4.2.4) • Potential sensor defective • Laser diode not firing • ITB separation for CMY abnormal • Transfer power pack defective • ID sensor defective

• Code: SC413
• Description: ID sensor error 5: Development γ Y Development gamma for black, magenta, cyan, or yellow is not within range (0.3 to 6.0). Process control halts when this SC is issued.
• Remedy: • Toner density not normal: Refer to the procedure for process control self-check error codes 55 to 59 to 59, and 61 (section 4.2.4) • Potential sensor defective • Laser diode not firing • ITB separation for CMY abnormal • Transfer power pack defective • ID sensor defective

• Code: SC414
• Description: ID sensor error 6: Development start voltage K The development start voltage in the development of the black, magenta, cyan, or yellow PCU is not within the correct range (±150V)
• Remedy: • Toner density not normal: Refer to the procedure for process control self-check error codes 55 to 59, and 61 (section 4.2.4) • Potential sensor defective • LD not firing correctly • ITB separation for CMY abnormal • Transfer power pack defective • ID sensor defective

• Code: SC415
• Description: ID sensor error 7: Development start voltage M The development start voltage in the development of the black, magenta, cyan, or yellow PCU is not within the correct range (±150V)
• Remedy: • Toner density not normal: Refer to the procedure for process control self-check error codes 55 to 59, and 61 (section 4.2.4) • Potential sensor defective • LD not firing correctly • ITB separation for CMY abnormal • Transfer power pack defective • ID sensor defective