• Code: SC422
• Description: Potential sensor error 3: Vd Adjustment C
  The development potential of the drum before exposure (Vd) cannot be adjusted to within ±10 V of the target voltage 900V).
• Causes: • Toner density low

• Code: SC423
• Description: Potential sensor error 4: Vd Adjustment Y
  The development potential of the drum before exposure (Vd) cannot be adjusted to within ±10 V of the target voltage 900V).
• Causes: • Toner density low

• Code: SC424
• Description: Potential sensor error 5: Vl adjustment K
  Vpl could not be adjusted to within ±10V of the target Vpl after exposure of the ID sensor patterns.
• Causes: • Toner density low

• Code: SC425
• Description: Potential sensor error 6: Vl adjustment M
  Vpl could not be adjusted to within ±10V of the target Vpl after exposure of the ID sensor patterns.
• Causes: • Toner density low

• Code: SC426
• Description: Potential sensor error 7: Vl adjustment C
  Vpl could not be adjusted to within ±10V of the target Vpl after exposure of the ID sensor patterns.
• Causes: • Toner density low

• Code: SC427
• Description: Potential sensor error 8: Vl adjustment Y
  Vpl could not be adjusted to within ±10V of the target Vpl after exposure of the ID sensor patterns.
• Causes: • Toner density low

• Code: SC432
• Description: Potential sensor error 1: Vr K
  Vr > 200V The residual voltage (Vr), the amount of voltage that remains on the surface of the drum after the QL fires is greater than 200V.
• Causes: • Toner density low

• Code: SC433
• Description: Potential sensor error 2: Vr M
  Vr > 200V The residual voltage (Vr), the amount of voltage that remains on the surface of the drum after the QL fires is greater than 200V.
• Causes: • Toner density low