• Code: SC344
• Description: Development Unit Set Error
  The development is not installed, or it is installed incorrectly. The development unit set switch is checked every time the machine is turned on and when the front doors are closed.
• Causes: 1. Pull out the development unit.
  2. Install it again.
  3. Close the front doors
  4. Cycle the machine off/on

• Code: SC360
• Description: TD Sensor Output Error 1: Vt Above Upper Limit
  The result of the check of the TD sensor output (Vt) after every copy for 10 continuous copies was Vt ≥ 4.0V (out of range).
• Causes: • TD sensor dirty or defective
  • TD sensor connector to BCU loose, broken, defective
  • IOB defective
  • BCU defective

• Code: SC364
• Description: TD Sensor Output Error 2: Vt Below Lower Limit
  The result of the check of the TD sensor output (Vt) after every copy for 10 continuous copies was Vt ≤ 0.5V (out of range).
• Causes: • TD sensor dirty or defective
  • TD sensor connector to BCU loose, broken, defective
  • IOB defective
  • BCU defective

• Code: SC368
• Description: TD Sensor Adjustment Error 1
  The value for Vref could not be set because:
  • The target voltage could not reach 2.5V with maximum PWM (255) application
  • The target voltage exceeded 2.5V with minimum PWM (0) application.
• Causes: • TD sensor connector or harness to the IOB loose, broken, defective
  • TD sensor defective
  • IOB defective
  • BCU defective

• Code: SC372
• Description: TD Sensor Adjustment Error 2
  The TD sensor output voltage is not adjusted to 2.5 ± 0.1 V within 60 s during initialization of the TD sensor with SP2801.
  Note: When an abnormal condition occurs, “0” is displayed for SP2906 (Vcont Manual Setting).
• Causes: • TD sensor connector, harness loose, broken, defective
  • TD sensor defective
  • IOB defective

• Code: SC396
• Description: Drum Motor Error
  The drum motor lock signal is longer than 2 s while the drum motor is on.
• Causes: • Drum motor connector, harness loose, broken, defective
  • Drum motor defective
  • Mechanical problem with the drum unit, transfer belt, toner collection unit

• Code: SC400
• Description: ID Sensor Error 1: Background Adjustment Error
  One of the following ID sensor output voltages was detected for Vsg (the reading of the bare drum surface) at ID sensor initialization.
  • The reading was less than 4V at PWM=255 (Maximum PWM).
  • The reading was over 4V at PWM=0 (Minimum PWM)
• Causes: • ID sensor harness, connector was loose, broken, defective
  • ID sensor dirty
  • ID sensor defective
  • IOB defective
  • BCU defective
  • LD unit defective
  • CGB/PPG power pack defective

• Code: SC401
• Description: ID Sensor Error 2: Background Output Error
  One of the following conditions were detected when checking the ID sensor pattern: • Vsg ≤ 2.5 V
  • Vsg= 0 V
  • The ID sensor output voltage = 5.0 V and PWM signal input to ID sensor = 0 Note: Vsg is the ID sensor output after checking the bare drum surface in the ID sensor pattern.
• Causes: • ID sensor harness, connector is loose, broken, or defective
  • ID sensor dirty
  • ID sensor defective
  • IOB defective
  • LD Unit defective
  • BCU defective
  • CGB/PPG power pack defective