• Code: SC143
• Description: Scanner automatic adjustment error
  At power on the automatic adjustment of the CIS failed after two attempts.
• Causes: • White platen roller dirty or installed incorrectly. • CIS LED malfunction. • CIS • PSU harness disconnected, broken. • CIS IOB harness disconnected, broken. • CIS IPU harness disconnected, broken. • CIS • BCU harness disconnected broken. • CIS defective. • IPU defective. • IOB defective. • BCU defective.

• Code: SC191
• Description: Scanner thermistor detection error
  The detected temperature reading is below 0C (32F) or above 100C (212F).
• Causes: • Thermistor disconnected, connection broken. • Thermistor has short-circuited.

• Code: SC300
• Description: Charge corona output error
  Charge corona feedback voltage of less than 1V was detected for more than 200 s.
• Causes: • CBG power pack is defective. • High voltage cable is defective. • Poor connection of the power pack connector. • Dirty charge corona unit caused leakage.

• Code: SC303
• Description: Charge grid output error
  Control PWM duty value is higher than 1% (FB less than 1V) for more than 200 ms (a grid current leak).
• Causes: • CBG power pack is defective. • High voltage cable is defective. • Poor connection of the power pack connector. • Dirty charge corona unit causing leakage

• Code: SC305
• Description: Charge corona wire cleaner error
  Wire cleaner motor feedback voltage of less than 0.1 V was detected for more than 1s. Corona wire cleaning did not complete within 80 s. Charge wire cleaner did not return to the home position. Cleaner does not move from the home position.
• Causes: • Wire cleaner motor connector disconnected. • Wire cleaner motor connector disconnected. • Wire cleaner motor is operating without load. • Wire cleaner stops due to an overload. • Wire cleaner motor drive circuit malfunction.

• Code: SC345
• Description: Development bias error
  A development bias feedback voltage of less than 0.25V was detected for more than 200 ms while the PWM duty value was more than 1% (development bias leak).
• Causes: • Possible Cause • CBG power pack defective • Bias cable defective • Poor bias cable connection • Bias leak

• Code: SC347
• Description: Development drive motor lock
  Development drive motor lock signal is high longer than 5 s when the development motor rotates.
• Causes: Drive mechanism overload Motor defective Motor disconnected

• Code: SC350
• Description: ID sensor error 1 - Vsp
  Vsp is 0V or more than 2.5 V. During the copy cycle, this SC is displayed after the copy is executed.
• Causes: • ID sensor defective • ID sensor connector defective • IOB malfunction • CBG power pack defective • Dirty ID sensor • VDB defective • LPH defective