MX3114N TROUBLESHOOTING 7 – 19
F6-04 FAX MODEM operation trouble
F6-21 Improper combination of TEL/LIU
PWB and FAX soft switch
F6-30 FAX 1-chip microprocessor access
error (FAX detection)
F6-97 Incompatibility between FAX control
PWB and the main machine
F6-98 Incompatibility between the FAX
control PWB destination and the main
machine destination
F9-91 Communication error between MFP
and the printer section when booting
F9-92 Printer (section) PWB hardware error
H2-00 Thermistor open trouble
(TH_UM_AD2)
Trouble content FAX control PWB MODEM chip operation trouble
Section FAX
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.
Trouble content Incompatibility between the TEL/LIU PWB and the
FAX control PWB information (soft switch)
Section MFP
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.
Trouble content FAX 1-chip microprocessor access error (Read and
write)
Section MFP
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 control PWB.
Trouble content Incompatibility between FAX control PWB and the
main machine
Section MFP
Case 1 Cause The FAX control PWB installed is improper.
FAX control PWB trouble.
Check
and
Remedy
Install a proper FAX control PWB.
Replace the FAX control PWB.
Trouble content Incompatibility between the FAX control PWB
destination and the main machine destination
Section MFP
Case 1 Cause Incompatibility between the destination information
written into the FAX control PWB EEPROM and that
in the main machine (set with SIM26-6)
Check
and
Remedy
1) Check the destination of the FAX control PWB.
2) Check the destination of the machine. (SIM26-6)
Trouble content Booting of the printer section cannot be recognized
when booting.
Detail MFP
Cause MFPC (section) PWB trouble.
Printer (section) PWB trouble.
Printer flash ROM trouble.
MFPC (section) PWB - printer (section) PWB
connection trouble.
Check & Remedy Replace the MFPC (section) PWB.
Replace the printer (section) PWB.
Replace the printer flash ROM.
Check connection between the MFPC (section) PWB
and the printer (section) PWB.
Trouble content Printer (section) PWB hardware error.
Detail MFP
Cause Printer PWB trouble
Font ROM contact trouble or error
DIMM memory contact trouble or error
Check & Remedy Replace the printer PWB
Check the Font ROM socket
Check the DIMM memory socket
Replace the DIMM memory
Trouble content
Detail PCU
Cause Thermistor trouble
PCU PWB trouble
Thermistor connector and harness connection trouble
Fusing section connector connection trouble
Fusing unit not installed
Check & 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.
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