• Code: 337
• Description: Polygonal mirror motor error 3
  The XSCRDY signal goes high while the polygon mirror motor turns on, even though there was no request to either turn off the motor or change the motor speed.
• Causes: • Noise on the line where the polygon ready signal (XSCRDY) is transmitted.
  • Harness between the polygon motor and I/F disconnected or defective.
  • Polygon motor or polygon motor driver defective

• Code: 338
• Description: Polygonal mirror motor error 4
  While the polygon motor is rotating, the XSCRDY signal goes high during exposure
• Causes: • Noise on the linef where the polygon ready signal (XSCRDY) is transmitted.
  • Harness between the polygon motor and I/F disconnected or defective.
  • Polygon motor or polygon motor driver defective
  • IPU board defective

• Code: 340
• Description: TD sensor output error
  TD sensor output voltage (Vt), measured during each copy cycle, is detected 10 times at one of the following levels: Vt = 0.5 volts or lower Vt = 4.0 volts or higher
• Causes: • TD sensor defective
  • TD sensor harness disconnected
  • TD sensor connector disconnected or defective
  • IOB defective
  • Toner bottle motor defective Note: When the TD sensor is defective, the toner supply is controlled using pixel count and the ID sensor.

• Code: 341
• 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). When this error occurs, SP2-906-1 reads 0.00V. Note: This SC is released only after correct adjustment of the TD sensor has been achieved. Switching the machine off and on will cancel the SC display, but does not release ID sensor toner supply.
• Causes: • TD sensor defective
  • TD sensor harness disconnected
  • TD sensor connector disconnected or defective
  • IOB defective
  • Toner bottle motor defective Note: When the TD sensor is defective, the toner supply is controlled using pixel count and the ID sensor.

• Code: 342
• Description: TD sensor adjustment error 2
  During the TD sensor auto adjustment, the TD sensor output voltage (Vt) does not enter the target range (3.0 ± 0.1V) within 20 s. When this error occurs, the display of SP2-906-1 reads 0.00V. Note: This SC is released only after correct adjustment of the TD sensor has been achieved. Switching the machine off and on will cancel the SC display, but does not release ID sensor toner supply.
• Causes: • TD sensor defective
  • TD sensor harness disconnected
  • TD sensor connector disconnected or defective
  • IOB defective

• Code: 345
• Description: Development output abnormal
  The high voltage applied to the development unit is detected 10 times higher than the upper limit (45%) of PWM.
• Causes: • Development power pack defective
  • Development bias leak due to poor connection, defective connector

• Code: 350
• Description: ID sensor error 1
  One of the following ID sensor output voltages was detected twice consecutively when checking the ID sensor pattern. Vsp . 2.5V Vsg < 2.5 Vsp = 0V Vsg = 0
• Causes: • ID sensor defective
  • ID sensor harness disconnected
  • ID sensor connector defective
  • IOB defective
  • ID sensor pattern not written correctly
  • Incorrect image density
  • Charge power pack defective
  • ID sensor dirty

• Code: 351
• Description: ID sensor error 2
  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 harness disconnected
  • ID sensor connector defective • IOB defective
  • ID sensor pattern not written correctly
  • Incorrect image density
  • Charge power pack defective
  • ID sensor dirty