• Code: 320
• Description: Development roller bias leak
  The maximum PMW duty (65%) is detected for 60 ms after the high voltage has been supplied to the development unit.
• Causes: • Development bias leak • Broken harness • Defective high voltage power supply, voltage supply • Defective high voltage supply unit

• Code: 324
• Description: Development paddle motor errorThe machine detects a lock signal error from the development puddle motor for 2 seconds after the drum motor has turned on.
• Causes: • Overload on the development puddle motor • Defective development puddle motor • Defective harness • Defective IOB

• Code: 350
• Description: ID sensor pattern test error
  One of the following readings occurred 10 times in the ID sensor output when the ID sensor pattern was checked:
  1) Vsp > 2.5V
  2) Vsg < 2.5V
  3) Vsp =0V
  4) Vsg = 0V
• Causes: • ID sensor connector defective • Poor ID sensor connector connection • I/O board (IOB) defective • Poor writing of ID sensor pattern on the drum • High voltage supply board defective

• Code: 351
• Description: ID sensor Vsg test error
  When the ID sensor was checked, the ID sensor output voltage is 5.0V while the LED current value is 0.
• Causes: • ID sensor defective or dirty • ID sensor connector defective • Poor ID sensor connection • I/O board (IOB) defective • Scanning system defective • High voltage supply board defective • Defect at the ID sensor pattern writing area of the drum

• Code: 355
• Description: Grayscale measurement error
  When the grayscale control result is the maximum and it does not operate correctly and these cases are detected 15 times.
• Causes: • ID sensor defective or dirty • The life of ID sensor or photo conductor • Shield glass dirty

• Code: 360
• Description: TD sensor (Vt) error 1
  The following condition occurs thirty times consecutively during printing. Vt is less than 0.5V or 4.8V or more
• Causes: • TD sensor disconnected • Harness between TD sensor and PCDU defective • Defective TD sensor.

• Code: 372
• Description: TD sensor adjustment error
  Vts is less than 1.8V or 4.8V or more during TD sensor initialization.
• Causes: • Heat seal not removed from a new developer pack • TD harness sensor disconnected, loose or defective • TD sensor defective • Harness between TD sensor and drawer disconnected, defective

• Code: 396
• Description: Drum motor error
  The machine detects a lock signal error from the drum motor for 2 seconds after the drum motor turned on.
• Causes: • Overload on the motor • Defective drum motor • Defective harness • Defective IOB