• Code: 240
• Description: LD error
  The IPU detected a problem at the LD unit.
• Causes: • LD unit harness broken, defective • BCU harness broken defective • LD unit defective • BCU defective
• Remedy: 1. Replace the harness of the LD. 2. Replace the laser optics housing unit. 3. Replace the harness of the BCU. 4. Replace the BCU.

• Code: 302
• Description: Charge level output error
  The PWM output level was detected higher than 50% after 10 consecutive samplings.
• Causes: • Harness of the high voltage power supply board (power pack) is loose, broken. • PCU connection loose or broken
• Remedy: 1. Replace the harness of the power pack. 2. Replace the harness of the PCU. 3. Replace the PCU.

• Code: 355
• Description: ID sensor error
  • One of the following conditions occurred when the ID sensor pattern was calibrated during printing: Vsp > 2.5V Vsg < 2.5V Vsp = 0V Vsg = 0V • The following conditions occurred simultaneously when the ID sensor pattern was calibrated during printing: Vsg = 5V PWM = 0 (LED current drop) • Error occurred during automatic adjustment of Vsg: Vsg output did not attain 4V, even with PWM = 1023 (maximum current for LED) Vsg output was greater than 4V, even with PWM=1 (no current for the LED)
• Causes: • ID sensor dirty or defective • ID sensor harness disconnected, or connector damaged • BCU defective • High voltage power supply board (power pack) defective • Scanning system or image creation system malfunction
• Remedy: 1. Replace the ID sensor harness. 2. Replace the ID sensor. 3. Replace the harness of the high voltage power supply board (power pack). 4. Replace the harness of the BCU. 5. Replace the BCU.

• Code: 389
• Description: TD sensor error 1
  TD sensor output was less than 0.5V, or more than 0.5V 10 times in succession. If the fax unit is installed, this SC is issued immediately. If the fax unit is not installed, this SC is issued after the prescribed number of copies has printed.
• Causes: • TD sensor abnormal • Poor connection of the PCU
• Remedy: 1. Replace the TD sensor. 2. Replace the harness of PCU.

• Code: 390
• Description: TD sensor error 2
  The TD sensor outputs less than 0.5V or more than 4.0V 10 times consecutively during copying. Note: If the fax option is installed, this SC is issued immediately. If the fax option is not installed, this SC is issued after the prescribed number of pages is copied.
• Causes: • TD sensor abnormal • Poor connection of the PCU
• Remedy: 1. Replace the TD sensor. 2. Replace the harness of PCU.

• Code: 391
• Description: Development bias leak
  The PWM output level was detected higher than 50% after 10 consecutive samplings.
• Causes: • High voltage power supply board (power pack) harness loose, broken. • PCU connection loose or broken
• Remedy: 1. Replace the harness of the high voltage power supply board (power pack). 2. Replace the harness of the PCU.

• Code: 392
• Description: TD sensor initial setting error
  Initialization of the new PCU unit failed (the drum and development roller did not start rotating)
• Causes: • ID sensor harness loose, broken • TD sensor harness loose, broken • ID sensor defective • TD sensor defective
• Remedy: 1. Replace the harness of the ID sensor. 2. Replace the the ID sensor. 3. Replace the harness of the TD sensor. 4. Replace the TD sensor.

• Code: 401
• Description: Transfer roller leak error 1
  A transfer roller current leak signal wad detected. (The current feedback signal for the transfer roller was not detected within the correct time.)
• Causes: • High voltage supply board set incorrectly or defective • Transfer roller set incorrectly or damaged • Transfer unit set incorrectly
• Remedy: 1. Check the high voltage supply board is set correctly. 2. Check the harness of the high voltage supply board. 3. Replace the high voltage supply board. 4. Check the transfer roller is set correctly. 5. Replace the transfer roller. 6. Check the transfer unit is set correctly.