• Code: SC417
• Description: ID sensor error: Development start voltage Y
  The development start voltage in the development of the black, magenta, cyan, or yellow PCU is not within the correct range (+-150V)
• Causes: • Toner density abnormal. Refer to the image troubleshooting section in Section 4 of the Venus-C1 B132 Service Manual (Self-Check Error Codes 55 to 59, 61). • Potential sensor defective • LD unit not firing • ITB separation for CMY abnormal • Transfer power pack defective

• Code: SC418
• Description: LED error during Vsg adjustment
  PWM value: Ifsg>3000 This means the current to the LED of the ID sensor is abnormal.
• Causes: • ID sensor dirty • ID sensor defective

• Code: SC420
• Description: Potential sensor error: Vd Adjustment K
  The development potential of the drum before exposure (Vd) cannot be adjusted to within +-8 V of the target voltage (-900V).
• Causes: • Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defective

• Code: SC421
• Description: Potential sensor error: Vd Adjustment K
  The development potential of the drum before exposure (Vd) cannot be adjusted to within +-8 V of the target voltage (-900V).
• Causes: • Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defective

• Code: SC422
• Description: Potential sensor error: Vd Adjustment M
  The development potential of the drum before exposure (Vd) cannot be adjusted to within +-8 V of the target voltage (-900V).
• Causes: • Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defective

• Code: SC423
• Description: Potential sensor error: Vd Adjustment C
  The development potential of the drum before exposure (Vd) cannot be adjusted to within +-8 V of the target voltage (-900V).
• Causes: • Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defective

• Code: SC423
• Description: Potential sensor error: Vd Adjustment Y
  The development potential of the drum before exposure (Vd) cannot be adjusted to within +-8 V of the target voltage (-900V).
• Causes: • Drum potential sensor harness, connector is loose, broken, defective • Drum potential sensor dirty • Drum potential sensor defective • Drum connector, harness loose, broken, defective • Development power pack defective • VBCU defective

• Code: SC424
• Description: Potential sensor error 5: Vl adjustment K
  Vpl could not be adjusted to within +-5V of the target Vpl after exposure of the ID sensor patterns.
• Causes: • Drum worn • LD unit dirty • Poor drum ground connection