Code :

Code: F2-45
Description: Color image density sensor trouble
Causes: Color image density sensor sensitivity adjustment trouble. Color image density sensor trouble. Sensor harness and connector connection trouble. Image density sensor dirt. Calibration plate dirt. Transfer unit lift operation trouble PCU PWB trouble.
Remedy: Replace the color image density sensor. Check connection of the sensor harness and the connector. Clean the image density sensor. Replace the calibration plate. Repair the transfer unit lift mechanism. Replace the PCU PWB.

Code: F2-49
Description: LSU thermistor trouble
Causes: The LSU temperature is outside of -28 - 78 deg C. LSU thermistor trouble. LSU thermistor harness and connector connection trouble PCU PWB trouble. LSU control PWB trouble.
Remedy: Replace the PCU PWB. Replace the LSU control PWB. Replace the LSU.

Code: F2-50
Description: K drum phase sensor trouble
Causes: Drum phase sensor trouble. Drum phase sensor harness and connector connection trouble Drum drive section trouble. PCU PWB trouble.
Remedy: Use SIM30-1 to check the operation of "DHPD_K". Replace the drum phase sensor. Check connection of the drum phase sensor harness and the connector. Repair the drum drive section. Replace the PCU PWB.

Code: F2-51
Description: CL drum phase sensor trouble (C)
Causes: Drum phase sensor trouble. Drum phase sensor harness and connector connection trouble Drum drive section trouble. PCU PWB trouble.
Remedy: Use SIM30-1 to check the operation of "DHPD_C", "DHPD_M", "DHPD_Y". Replace the drum phase sensor. Check connection of the drum phase sensor harness and the connector. Repair the drum drive section. Replace the PCU PWB.

Code: F2-52
Description: CL drum phase sensor trouble (M)
Causes: Drum phase sensor trouble. Harness and connector connection trouble. Drum drive section trouble. PCU PWB trouble.
Remedy: Use SIM30-1 to check the operation of "DHPD_C", "DHPD_M", "DHPD_Y". Replace the drum phase sensor. Check connection of the connectors and the harness. Repair the drum drive section. Replace the PCU PWB.

Code: F2-53
Description: CL drum phase sensor trouble (Y)
Causes: Drum phase sensor trouble. Harness and connector connection trouble. Drum drive section trouble. PCU PWB trouble.
Remedy: Use SIM30-1 to check the operation of "DHPD_C", "DHPD_M", "DHPD_Y". Replace the drum phase sensor. Check connection of the connectors and the harness. Repair the drum drive section. Replace the PCU PWB.

Code: F2-58
Description: Temperature/humidity sensor trouble (HUD_M/TH_M)
Causes: Temperature/humidity sensor trouble. Process humidity sensor harness and connector connection trouble PCU PWB trouble.
Remedy: Replace the temperature/humidity sensor. Check connection of the temperature/humidity sensor harness and the connector. Replace 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. Tone 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 toner hopper section.