Causes: DC power supply trouble at the main machine. SCN-MFP PWB trouble (Fuse break trouble). 24 volt detection circuit Trouble at FAX PWB. Harness trouble between the FAN PWB and SCNMFP PWB.
Remedy: Check the 24 volt supply circuit between the machine and the FAX PWB. Replace the DC power supply unit at the machine. Replace the SCN-MFP PWB. Replace the FAX PWB. REplace the harness between the machine and the FAX PWB.
Code: F6-04
Description: FAX MODEM operation trouble
Causes: FAX MODEM 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.
Code: F6-21
Description: Improper combination of TEL/LIU PWB and FAX soft switch
Causes: Improper combination of TEL/LIU PWB and FAX soft switch
Remedy: Case 1 Cause The destination of the TEL/LIU PWB installed is improper. Check and Remedy Check the destination of the TEL/LIU PWB. Case 2 Cause TEL/LIU PWB trouble. Check and Remedy Replace the TEL/LIU PWB. Case 3 Cause Different Fax PWB information (Soft Switch) Check and Remedy Check Fax PWB information (Soft Switch)
Remedy: Case 1 Cause Program writing trouble to the 1-chip microprocessor, or no program data written. Check and Remedy Use SIM66-42 to rewrite the 1-chip microprocessor program. Case 2 Cause FAX 1-chip microprocessor circuit trouble. Check and Remedy Replace the FAX PWB and Use SIM66-42 to rewrite the program.
Code: F6-97
Description: Incompatibility between FAX PWB and the main machine
Causes: The FAX PWB installed is improper. FAX PWB trouble
Remedy: Install a proper FAX PWB. Replace the FAX PWB.
Code: F6-98
Description: Incompatibility between the FAX PWB destination and the main machine destination
Causes: Incompatibility between the destination information written into the FAX PWB PCI and that in the main machine (set with SIM26-6)
Remedy: Check the destination of the FAX control PWB. Check the destination of the main machine (SIM26- 06)
Code: H2-00
Description: Thermistor open trouble (Upper main TH_UM detection) (TH_LM)
Causes: Thermistor trouble PCU PWB trouble Thermistor connector and harness trouble AC Power unit trouble
Remedy: Use SIM44-14 to check the state of the thermistor. Replace the thermistor. Replace the PCU PWB. Check connection of the thermistor connector and the harness. Check the connector in the fusing section.
Code: H2-01
Description: Thermistor open trouble (Lower main TH_LM) (TH_LM)
Causes: Thermistor trouble PCU PWB trouble Thermistor connector and harness trouble AC Power unit trouble
Remedy: Use SIM44-14 to check the state of the thermistor. Replace the thermistor. Replace the PCU PWB. Check connection of the thermistor connector and the harness. Check the connector in the fusing section.