• Code: F2-52
• Description: M drum phase sensor trouble (M)
• Causes: Drum phase sensor dirt. Drum phase sensor trouble. Drum phase sensor harness and connector connection trouble Drum drive section trouble. PCU PWB trouble
• Remedy: Check the sensor condition and check the connection. Use SIM30-1 to check the operation of "DHPD_CL". Replace the drum phase sensor. Repair the drum drive section. Replace the PCU PWB.

• Code: F2-53
• Description: Y drum phase sensor trouble (Y)
• Causes: Drum phase sensor dirt. Drum phase sensor trouble. Drum phase sensor harness and connector connection trouble Drum drive section trouble. PCU PWB trouble
• Remedy: Check the sensor condition and check the connection. Use SIM30-1 to check the operation of "DHPD_CL". Replace the drum phase sensor. Repair the drum drive section. Replace the PCU PWB

• Code: F2-58
• Description: Temperature/humidity sensor trouble (Indoor humidity detection trouble)
• Causes: Detection of abnormality by the humidity sensor on internal temperature/ humidity sensor.
• Remedy: Check internal temperature/humidity sensor and check the connection of harness and connector. Check the PCU PWB.

• Code: F2-64
• Description: Toner supply operation trouble (K)
• Causes: Toner motor trouble. Toner density sensor trouble. Connector/harness trouble. PCU PWB trouble. Toner cartridge trouble. Developing unit trouble. Hopper section trouble
• Remedy: Replace the toner motor. Replace the toner density sensor. Connector and harness check. Replace the PCU PWB. Replace the toner cartridge. Replace the developing unit. Check the hopper section.

• Code: F2-65
• Description: Toner supply operation trouble (C)
• Causes: Toner motor trouble. Toner density sensor trouble. Connector/harness trouble. PCU PWB trouble. Toner cartridge trouble. Developing unit trouble. Hopper section trouble
• Remedy: Replace the toner motor. Replace the toner density sensor. Connector and harness check. Replace the PCU PWB. Replace the toner cartridge. Replace the developing unit. Check the hopper section

• Code: F2-66
• Description: Toner supply operation trouble (M)
• Causes: Toner motor trouble. Toner density sensor trouble. Connector/harness trouble. PCU PWB trouble. Toner cartridge trouble. Developing unit trouble. Hopper section trouble
• Remedy: Replace the toner motor. Replace the toner density sensor. Connector and harness check. Replace the PCU PWB. Replace the toner cartridge. Replace the developing unit. Check the hopper section

• Code: F2-67
• Description: Toner supply operation trouble (Y)
• Causes: Toner motor trouble. Toner density sensor trouble. Connector/harness trouble. PCU PWB trouble. Toner cartridge trouble. Developing unit trouble. Hopper section trouble
• Remedy: Replace the toner motor. Replace the toner density sensor. Connector and harness check. Replace the PCU PWB. Replace the toner cartridge. Replace the developing unit. Check the hopper section.

• Code: F2-70
• Description: Improper toner cartridge detection (K)
• Causes: An improper toner cartridge is inserted. (The main unit detects a toner cartridge of a different specification.) Toner cartridge trouble. PCU PWB trouble.
• Remedy: Replace the toner cartridge. Replace the PCU PWB.