• Code: SC485
• Description: Used toner bottle motor error
  The lock signal of the used toner bottle motor remains HIGH for more than 600 ms.
• Causes: • Used toner bottle harness loose, broken, defective • Used toner bottle motor defective

• Code: SC487
• Description: Used toner bottle set error
  The set sensor of the used toner bottle remains LOW for more than 500 ms. (The sensor goes HIGH when the bottle is installed correctly.)
• Causes: • Used toner bottle not installed • Remove used toner bottle and reinstall correctly

• Code: SC488
• Description: Used toner transport lock
  Used toner cannot be transported to the used toner bottle.
• Causes: • Blockage in the line to the used toner bottle

• Code: SC490
• Description: MUSIC sensor error
  One or more of the MUSIC sensors is not functioning normally.
• Causes: • MUSIC sensor harness loose, broken, defective • Sensor defective

• Code: SC495
• Description: ITB encoder sensor error
  The ITB encoder sensor that reads the encoded strip on the ITB is not functioning properly.
• Causes: • Sensor dirty • Sensor harness loose, broken, defective • Sensor out of position because installed incorrectly • ITB installed incorrectly

• Code: SC496
• Description: MUSIC sensor error
  The MUSIC sensor detected an abnormal pattern on the ITB because: • ADC exceeded upper or lower limit. • The pattern used to calculate the amount of skew is abnormal. • The reading of the pattern exceeded the length of time the LED projected light. • LED light could not be adjusted correctly.
• Causes: • ITB installed incorrectly • Inspect ITB belt for damage, replace • MUSIC pattern abnormal; do a forced process control (SP3821) and check the result. • MUSIC sensor defective or disconnected

• Code: SC497
• Description: Temperature and humidity sensor error: M PCU
  The thermistor output of the temperature and humidity sensor above the M PCU was not within the prescribed range (0.5V to 4.2V)
• Causes: • Temperature and humidity sensor harness disconnected, loose, defective • Temperature and humidity sensor defective

• Code: SC498
• Description: Temperature and humidity sensor error: Toner Bottle
  The thermistor output of the temperature and humidity sensor below the used toner bottle was not within the prescribed range (0.5V to 4.2V)
• Causes: • Temperature and humidity sensor harness disconnected, loose, defective • Temperature and humidity sensor defective