• Code: 243
• Description: LDB error [C]
  The EGB detects LDB error a few times consecutively when LDB unit turns on after LDB initialization.
• Causes: Defective LDB
• Remedy: 1. Replace the LDB.

• Code: 270
• Description: LDU shutter error
  Sensor output does not change even if 1 second passes after the LDU shutter motor is on.
• Causes: Sensor defective or LDU shutter motor defective
• Remedy: 1. Replace the LDU shutter sensor or shutter motor.

• Code: 300
• Description: High voltage power board: Charge voltage output error [K]
  The measured voltage is not proper when EGB measures the charge output for each color.
• Causes: Defective charge roller. Defective connectors. Disconnected harness. Defective high voltage power 1.
• Remedy: 1. Check the connectors. 2. Replace the PCU for black. 3. Replace the drum positioning plate. 4. Replace the high voltage power 1.

• Code: 301
• Description: High voltage power board: Charge voltage output error [M]
  The measured voltage is not proper when EGB measures the charge output for each color.
• Causes: Defective charge roller. Defective connectors. Disconnected harness. Defective high voltage power 1.
• Remedy: 1. Check the connectors. 2. Replace the PCU for magenta. 3. Replace the drum positioning plate. 4. Replace the high voltage power 1.

• Code: 302
• Description: High voltage power board: Charge voltage output error [C]
  The measured voltage is not proper when EGB measures the charge output for each color.
• Causes: Defective charge roller. Defective connectors. Disconnected harness. Defective high voltage power 1.
• Remedy: 1. Check the connectors. 2. Replace the PCU for cyan. 3. Replace the drum positioning plate. 4. Replace the high voltage power 1.

• Code: 303
• Description: High voltage power board: Charge voltage output error [Y]
  The measured voltage is not proper when EGB measures the charge output for each color.
• Causes: Defective charge roller Defective connectors Disconnected harness Defective high voltage power 1
• Remedy: 1. Check the connectors. 2. Replace the PCU for yellow. 3. Replace the drum positioning plate. 4. Replace the high voltage power 1.

• Code: 304
• Description: Charge AC bias error [K]
  The charge current less than 200 mkA is detected.
• Causes: Defective charge roller. Defective connectors. Disconnected harness. Defective high voltage power 1.
• Remedy: 1. Check the connectors. 2. Replace the PCU for black. 3. Replace the drum positioning plate.

• Code: 305
• Description: Charge AC bias error [M]
  The charge current less than 200 mkA is detected.
• Causes: Defective charge roller. Defective connectors. Disconnected harness. Defective high voltage power 1.
• Remedy: 1. Check the connectors. 2. Replace the PCU for magenta. 3. Replace the drum positioning plate. 4. Replace the high voltage power 1.