• Code: SC337
• Description: Polygonal mirror motor error 3
  The XSCRDY signal becomes high while the polygonal mirror motor turns on, even though there was no demand for either turning off the motor or changing the motor speed.
• Causes: • Poor cable connection to the polygonal mirror motor driver. • Polygonal mirror motor (driver) defective • BICU defective

• Code: SC338
• Description: Polygonal mirror motor error 1
  The XSCRDY signal does not become stable within 20 seconds after the polygonal mirror motor turns on or off or the polygon motor speed is changed.
• Causes: • Poor cable connection to the polygonal mirror motor driver. • Polygonal mirror motor (driver) defective • BICU defective

• Code: SC340
• Description: TD sensor output error
  The TD sensor output voltage (Vt), which is measured during each copying process, is one of the following 10 times consecutively. 1) Vt = 0.5 volts or lower 2) Vt = 4.0 volts or higher
• Causes: • TD sensor defective • Poor connection between the TD sensor and the I/O board. • I/O board defective NOTE: In this error condition, the toner supply is controlled using pixel count and Vsp/Vsg.

• Code: SC341
• Description: TD sensor adjustment error 1
  During the TD sensor auto adjustment, the TD sensor output voltage (Vt) is 2.5 volts or higher even though the control voltage is set to the minimum value (PWM = 0)
• Causes: • TD sensor defective • Poor connection between the TD sensor and the I/O board. • I/O board defective NOTE: In this error condition, the toner supply is controlled using pixel count and Vsp/Vsg.

• Code: SC342
• Description: TD sensor adjustment error 2
  During the TD sensor auto adjustment, the TD sensor output voltage (Vt) does not come in the target range (2.5 ± 0.1V) within 20 seconds.
• Causes: • TD sensor defective • Poor connection between the TD sensor and the I/O board. • I/O board defective NOTE: In this error condition, the toner supply is controlled using pixel count and Vsp/Vsg.

• Code: SC345
• Description: Development bias leak
  A development bias leak signal is detected.
• Causes: • Poor connection between the development bias terminal and the development P.P. • Development P.P. defective

• Code: SC350
• Description: ID sensor error 1
  One of the following ID sensor output voltages was detected twice consecutively when checking the ID sensor pattern. 1) Vsp ≥ 2.5V 2) Vsp = 0V
• Causes: • ID sensor defective • ID sensor connector defective • Poor ID sensor connector connection • I/O board (IOB) defective • Charge or development power pack defective • Dirty ID sensor • Defect at ID sensor pattern writing area of the drum

• Code: SC351
• Description: ID sensor error 2
  One of the following ID sensor output voltages was detected twice consecutively when checking the ID sensor pattern. 1) Vsg< 2.5V 2) Vsg = 0V 3) The ID sensor output voltage is 5.0V and the PWM signal input to the ID sensor is 0 when checking the ID sensor pattern
• Causes: • ID sensor defective • ID sensor connector defective • Poor ID sensor connector connection • I/O board (IOB) defective • Charge or development power pack defective • Dirty ID sensor • Defect at the ID sensor pattern writing area of the drum