• 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

• Code: 400
• Description: Vsg adjustment error
  Vsg is more than 4.2V or 3.8V or less when the machine adjusts Vsg value.
• Causes: • Dirty or defective ID sensor • Defective ID sensor shutter

• Code: 440
• Description: Transfer belt bias error
  The feed back bias from the transfer belt is more than 4V for 60 msec while the transfer belt bias is output. The A/D conversion level is 20 or less for 60 msec. The PWM duty is 24% or more for 60 msec.
• Causes: • Power pack broken • Defective harness • Disconnected connector

• Code: 441
• Description: Transfer/Development motor error
  The machine detects a lock signal error from the transfer/development motor for 2 seconds after the transfer/development motor turned on.
• Causes: • Overload on the motor • Defective transfer/development motor • Defective harness • Defective IOB

• Code: 442
• Description: Transfer belt contact motor error
  The transfer belt HP sensor detects incorrect movement of the transfer belt after the transfer belt contact motor has turned on.
• Causes: • Dirty transfer belt HP sensor • Defective transfer belt contact motor • Disconnected connector of the transfer belt HP sensor or motor • Disconnected cable • Defective IOB

• Code: 501
• Description: 1st tray lift malfunction
  The tray lift sensor is not activated after the tray lift motor has been on for 10 seconds. If the main power switch is turned on when the paper is already at the feed height, the paper height position is detected again. At this time, the tray lift sensor should de-activate within 1.5 sec after the paper bottom plate starts to drop. If it does not deactivate within 1.5 sec., a message will prompt the user to reset Tray 1. After two attempts to release the error by re-setting the paper tray, if this does not solve the problem then this SC is displayed.
• Causes: • An obstruction (jammed paper, paper scraps, etc.) has blocked the motor drive and caused an overload. • Tray lift sensor connection loose, disconnected, or damaged • Tray lift sensor defective • Tray lift motor connection loose, disconnected, or damaged • Tray lift motor defective

• Code: 502
• Description: 2nd tray lift malfunction
  The tray lift sensor is not activated after the tray lift motor has been on for 10 seconds. If the main power switch is turned on when the paper is already at the feed height, the paper height position is detected again. At this time, the tray lift sensor should de-activate within 1.5 sec. after the paper bottom plate starts to drop. If it does not deactivate within 1.5 sec., a message will prompt the user to reset Tray 2. After two attempts to re-set the paper tray, if this does not solve the problem then this SC is displayed.
• Causes: • An obstruction (jammed paper, paper scraps, etc.) has blocked the motor drive and caused an overload. • Tray lift sensor connection loose, disconnected, or damaged • Tray lift sensor defective • Tray lift motor connection loose, disconnected, or damaged • Tray lift motor defective