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L8-20
Power controller communication
trouble
Trouble content
Communication establishment error / Framing /
Parity / Protocol error
Detail
MFP
Cause
PCU PWB - MFPC PWB connector connection
trouble.
Broken connector pin of the PCU PWB of the MFPC
PWB.
Check & Remedy
Replace the PCU PWB.
Check connector connection between the PCU PWB
and the MFPC PWB.
Check the ground of the main unit.
P1-00
PCI communication error
Trouble content
Detail
MFP
Cause
Communication error between the MFPC PWB and
the PCI.
Connection failure of connectors and harness
between the MFPC PWB and the PCI.
MFPC PWB trouble.
PCI control PWB trouble.
Check & Remedy
Check connection of the harness and connectors
between the MFPC PWB and the PCI.
Check the MFPC PWB, and replace if necessary.
(Refer to the necessary procedures after replacement
of the MFPC PWB in the Service Manual, and
perform the procedures.)
Check the PCI control PWB, and replace if
necessary.
P1-01
PCI fan error
Trouble content
Detail
MFP
Cause
The PCI fan operation signal is not detected.
PCI fan trouble.
PCI control PWB trouble.
Check & Remedy
Check connection of the connectors and harness
between the PCI fan and the PCI control PWB.
Check the PCI control PWB, and replace if
necessary.
Check the PCI fan, and replace if necessary.
P1-02
Plasma generating device error
Trouble content
Detail
MFP
Cause
Connection failure of connectors and harness
between the plasma generating device and the PCI
control PWB.
Plasma generating device trouble.
PCI control PWB trouble.
Check & Remedy
Check connection of the connectors and harness
between the plasma generating device and the PCI
control PWB.
Replace the plasma generating device.
Check the PCI control PWB, and replace if
necessary.
PC--
Trouble content
Check & Remedy
U1-01
Trouble content
Case 1
U2-00
Trouble content
Check & Remedy
U2-05
Trouble content
Check & Remedy
U2-10
Trouble content
Check & Remedy
MX-M316N TROUBLESHOOTING 7 – 16
Personal counter not detected
Detail
MFP
Cause
The personal counter is not installed.
The personal counter is not detected.
SCU PWB trouble.
Check connection of the connectors and the harness.
Replace the SCU PWB.
Battery trouble
RTC backup battery voltage fall
Detail
MFP
Cause
1)
Battery life
2)
Battery circuit abnormality
Check
Check to confirm that the battery voltage is about
and
2.5V or above.
Remedy
Replace the battery.
MFP EEPROM read/write error
Detail
MFP
Cause
MFPC PWB EEPROM trouble
EEPROM socket contact trouble
MFPC PWB trouble
Strong external noises.
Replace the MFPC PWB EEPROM.
Replace the MFPC PWB.
(Refer to the pages on the necessary works after
replacing the MFPC PWB in the Service Manual, and
perform the works.)
Check the power environment.
SD/MFPC PWB SRAM contents
inconsistency
The SD card or the MFPC PWB installed is improper.
(Erroneous detection of account management data)
Detail
MFP
Cause
The SD card was replaced.
The MFPC PWB was replaced.
SD card trouble
MFPC PWB trouble
Refer to the pages on the necessary works after
replacing the SD and the MFPC PWB in the Service
Manual, and perform the works.
Use SIM16 to cancel the error.
MFPC PWB SRAM user authentication
index check sum error
Detail
MFP
Cause
SRAM user index information (user authentication
basic data) check sum error.
MFPC PWB SRAM trouble.
MFPC PWB trouble.
Strong external noises.
Use SIM16 to cancel the error.
(Index information data in the HDD are transferred to
the SRAM.)
Replace the MFPC PWB.
(Refer to the pages on the necessary works after
replacing the MFPC PWB in the Service Manual, and
perform the works.)
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