Description: LD error The IPU (EGB) detects a problem at the LD unit.
Causes: • Worn-out LD • Disconnected or broken harness of the LD.
Remedy: 1. Replace the laser optics unit.
Code: 300
Description: High voltage power output error The measured voltage is not correct when the EGB measures each charge output (charge, development, image transfer belt unit, and transfer unit).
Causes: • Disconnected or defective high voltage harness • Defective high voltage power supply • Defective EGB
Remedy: 1. Check or replace the harnesses. 2. Replace the high voltage power supply board 3. Replace the EGB.
Code: 396
Description: Black drum motor error The LOCK signal error is detected when the EGB monitors the black drum motor state. (This monitoring is done immediately after power-on, when the motor starts rotating, and immediately after the motor stops.)
Causes: • Disconnected or defective motor harness. • Motor slips due to excessive load
Remedy: 1. Check the harness from the black drum motor. Replace it if necessary.
Code: 397
Description: Color drum motor error The LOCK signal error is detected when the EGB monitors the color drum motor state. (This monitoring is done immediately after power-on, when the motor starts rotating, and immediately after the motor stops.)
Causes: • Disconnected or defective motor harness. • Motor slips due to excessive load
Remedy: 1. Check the harness from the color drum motor. Replace it if necessary.
Code: 400
Description: TM sensor error The CPU detected a low voltage of the positive reflection output under the threshold in the TM sensor.
Causes: • TM sensors are dirty. • A solid print out due to an electrostatic charging error • The TM sensor is defective.
Remedy: 1. Clean the TM sensors. 2. Replace the TM sensors. 3. Check the image transfer unit. 4. Turn the power Off and On.
Code: 445
Description: ITB (Image Transfer Belt) Unit: Home Position Error The ITB contact sensor does not detect the home position of the ITB for 5 seconds after the ITB unit initialization has been done. ITB (Image Transfer Belt) Unit: Contact Position Error The ITB contact sensor does not detect the contact position of the ITB for 5 seconds after the ITB unit has moved to the contact position. ITB (Image Transfer Belt) Unit: No-contact Position Error The ITB contact sensor does not detect the home position of the ITB for 5 seconds after the ITB unit has moved to no-contact position.
Causes: • Defective ITB contact motor • Defective ITB contact sensor • Defective ITB unit
Remedy: 1. Replace the ITB contact motor. 2. Replace the ITB contact sensor. 3. Replace the ITB unit.