Code :

Code: F3-12
Description: Paper feed tray 1 lift operation trouble. LUD1 is not turned ON within the specified time.
Causes: 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 LUD2 does not turn ON within the specified time.
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. C3LUD does not turn ON within the specified time.
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. C4LUD does not turn ON within the specified time.
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: MFPC PWB - FAX communication trouble. MFP - FAX communication establishment error / Framing / Parity / Protocol error
Causes:
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 control PWB EEPROM read/write error. FAX control PWB EEPROM access error (Read and write)
Causes:
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.

Code: F6-02
Description: FAX power supply trouble
Causes: DC power supply trouble MFP PWB trouble 24V detection circuit trouble Harness trouble between the FAX PWB and MFP PWB
Remedy: Check 24V supply circuit between the machine and FAX PWB Replace DC power supply unit Replace MFP PWB Replace FAX PWB Replace the harness between the machine and FAX PWB

Code: F6-04
Description: FAX MODEM operation trouble.
Causes: FAX control PWB MODEM chip operation trouble
Remedy: Case 1 Cause FAX MODEM chip operation trouble. Check and remedy Replace the FAX control PWB. Case 2 Cause The FAX MODEM chip cannot be accessed. Check and Remedy Replace the FAX control PWB.