Code :

Code: F2-91
Description: High density process control high voltage error
Causes: * Image density sensor trouble, harness connection trouble between the PCU PWB and the image density sensor, dirt on the image density sensor, transfer belt cleaning trouble. * Eloping tank abnormality
Remedy: * Use SIM44-02 to execute the gain adjustment of the process control sensor. When "Error" is displayed, it may be considered as breakdown. Check the sensor and the harness. When the adjustment is normally completed, check the drum surface and the belt surface. * Replace the developing tank.

Code: F2-A0
Description: After transfer discharge lamp open trouble
Causes: Connection trouble between the after-transfer discharge lamp PWB and the PCU PWB After-transfer discharge lamp PWB trouble PCU PWB trouble
Remedy: Use SIM5-4 to check lighting of the after-transfer discharge lamp (K) [DL2_K]. Check the after-transfer discharge lamp PWB (K). Check the harness and the connector. Replace the PCU PWB.

Code: F3-12
Description: Paper feed tray 1 lift operation trouble
Causes: LUD1 is not turned ON within the specified time. CLUD1 sensor trouble. Paper feed tray 1 lift unit trouble. PCU PWB trouble. Sensor harness and connector connection trouble
Remedy: Check connection of the harness and the connector of LUD1. Replace the lift unit. Replace the PCU PWB.

Code: F3-22
Description: Paper feed tray 2 lift operation trouble
Causes: LUD2 does not turn ON within the specified time. CLUD2 sensor trouble. Paper feed tray 2 lift unit trouble. PCU PWB trouble. Sensor harness and connector connection trouble
Remedy: Check the harness and the connector of LUD2. Replace the lift unit. Replace the PCU PWB.

Code: F3-32
Description: Main body cassette 3 lift trouble
Causes: C3LUD sensor trouble. Cassette 3 lift motor trouble. Harness connection trouble between the PCU PWB, the lift unit, and the paper feed unit
Remedy: Check the harness and the connector of C3LUD. Check the lift unit.

Code: F3-42
Description: Main body cassette 4 lift trouble
Causes: C4LUD sensor trouble. Cassette 4 lift motor trouble. Harness connection trouble between the PCU PWB, the lift unit, and the paper feed unit
Remedy: Check the harness and the connector of C4LUD. Check the lift unit.

Code: F6-00
Description: MFP - FAX communication trouble
Causes: MFP - FAX communication establishment error / Framing / Parity / Protocol error
Remedy: Case 1 Cause FAX control PWB trouble. Check and Remedy Replace the FAX control PWB. Case 2 Cause FAX control PWB - MFPC PWB connector and harness trouble Check and Remedy Check the connector and the harness between the FAX control PWB and the MFPC PWB. Case 3 Cause FAX control PWB - Mother board connector and harness trouble Check and Remedy Check the connector and the harness between the FAX control PWB and the mother board. Case 4 Cause FAX control PWB ROM trouble / ROM pin breakage Check and Remedy Check the ROM of the FAX control PWB.

Code: F6-01
Description: FAX EEPROM read/write error
Causes: FAX control PWB EEPROM access error (Read and write)
Remedy: Case 1 Cause FAX control PWB EEPROM trouble Check and Remedy Check that no trouble occurs after replacement of EEPROM. Execute the memory check of SIM66-3 to insure that EEPROM can be accessed. Case 2 Cause FAX control PWB EEPROM access circuit trouble Check and Remedy Replace the FAX control PWB.