Code :

Code: F2-24
Description: Discharge lamp trouble (M)
A trouble is detected when the discharge lamp open sensor is open for 1 sec after turning ON the discharge lamp.
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)
A trouble is detected when the discharge lamp open sensor is open for 1 sec after turning ON the discharge lamp.
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: F2-39
Description: Process thermister trouble
Causes: Process thermister trouble. Process thermister harness connection trouble. PCU PWB trouble
Remedy: Replace the process thermister. 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.

Code: F2-41
Description: Toner density sensor trouble (CYAN)
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.

Code: F2-42
Description: Toner density sensor trouble (MAGENTA)
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.

Code: F2-43
Description: Toner density sensor trouble (YELLOW)
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.

Code: F2-45
Description: Color image density sensor trouble
Causes: Color image density sensor sensitivity adjustment trouble. Color image density sensor trouble. Harness and connector connection trouble. Image density sensor dirt. Calibration plate dirt. Calibration plate solenoid trouble. PCU PWB trouble.
Remedy: Replace the color image density sensor. Check connection of the connectors and the harness. Clean the image density sensor. Replace the calibration plate. Replace the calibration plate solenoid. Replace the PCU PWB. Use SIM44-2 to adjust the process control sensor sensitivity.