Code :

Code: F2-24
Description: Discharge lamp trouble (M)
Causes: Contact trouble between the discharge lamp PWB (M) and the PCU PWB. Discharge lamp PWB (M) trouble. PCU PWB trouble.
Remedy: Replace the discharge lamp PWB (M). Check the harness and the connector. Replace the PCU PWB.

Code: F2-25
Description: Discharge lamp trouble (Y)
Causes: Contact trouble between the discharge lamp PWB (Y) and the PCU PWB. Discharge lamp PWB (Y) trouble. PCU PWB trouble.
Remedy: Replace the discharge lamp PWB (Y). Check the harness and the connector. Replace the PCU PWB.

Code: F2-26
Description: Auto toner density control level setting trouble (K)
Causes: The toner density sample level is not in the specified range when the automatic toner density control level is set. (K) Toner density sensor trouble. Developing unit trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: When the power is turned OFF/ON, the automatic developer adjustment is executed again. Replace the developer cartridge. Replace the PCU PWB. Check connection of the connector and the harness.

Code: F2-27
Description: Auto toner density control level setting trouble (C)
Causes: The toner density sample level is not in the specified range when the automatic toner density control level is set. (C) Toner density sensor trouble. Developing unit trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: When the power is turned OFF/ON, the automatic developer adjustment is executed again. Replace the developer cartridge. Replace the PCU PWB. Check connection of the connector and the harness.

Code: F2-28
Description: Auto toner density control level setting trouble (M)
Causes: The toner density sample level is not in the specified range when the automatic toner density control level is set. (M) Toner density sensor trouble. Developing unit trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: When the power is turned OFF/ON, the automatic developer adjustment is executed again. Replace the developer cartridge. Replace the PCU PWB. Check connection of the connector and the harness.

Code: F2-29
Description: Auto toner density control level setting trouble (Y)
Causes: The toner density sample level is not in the specified range when the automatic toner density control level is set. (Y) Toner density sensor trouble. Developing unit trouble. PCU PWB trouble. Connection trouble of the connector and the harness.
Remedy: When the power is turned OFF/ON, the automatic developer adjustment is executed again. Replace the developer cartridge. Replace the PCU PWB. Check connection of the connector and the harness.

Code: F2-39
Description: Process thermistor trouble
Causes: Process thermistor trouble. Process thermistor harness connection trouble. PCU PWB trouble
Remedy: Replace the process thermistor. Check connection of the harness and the connector. Replace the PCU PWB.

Code: F2-40
Description: Toner density sensor trouble (BLACK)
Causes: Toner density sensor output abnormality (Sample level 25 or less, or 231 or above) Connection trouble of the connector and the harness. Developing unit trouble. PCU PWB trouble
Remedy: Replace the toner density sensor. Harness and connector connection trouble. Replace the developing unit. Replace the PCU PWB.