MX3114N TROUBLESHOOTING 7 – 25
U2-00
MFP EEPROM read/write error
U2-05
HDD/MFPC PWB SRAM contents
inconsistency
U2-10
MFPC PWB SRAM user authentication
index check sum error
U2-11
MFPC PWB EEPROM counter check
sum error
U2-22
MFP PWB SRAM memory check sum
error
U2-23
MFP PWB SRAM memory individual
data check sum error
U2-24
MFPC PWB SRAM memory user
authentication counter check sum
error
U2-30
MFPC PWB and PCU PWB
manufacturing No. data inconsistency
Trouble content
Detail
MFP
Cause
MFPC PWB EEPROM trouble
EEPROM socket contact trouble
MFPC PWB trouble
Strong external noises.
Check & Remedy
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.
Trouble content
The HDD or the MFPC PWB installed is improper.
(Erroneous detection of account management data)
Detail
MFP
Cause
The HDD was replaced.
The MFPC PWB was replaced.
HDD trouble
MFPC PWB trouble
Check & Remedy
(Refer to the pages on the necessary works after
replacing the HDD and the MFPC PWB in the Service
Manual, and perform the works.)
Use SIM16 to cancel the error.
Trouble content
Detail
MFP
Cause
SRAM user index information (user authentication
basic data) check sum error.
MFPC PWB SRAM trouble.
MFPC PWB trouble.
Strong external noises.
Check & Remedy
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.)
Trouble content
Detail
MFP
Cause
MFPC PWB EEPROM trouble
EEPROM socket contact trouble
MFPC PWB trouble
Strong external noises.
Check & Remedy
Use SIM16 to cancel the error. (The previous writing
data (about the latest 8 sheets) are written into the
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.)
Trouble content
Detail
MFP
Cause
MFP PWB SRAM trouble
Strong external noises
Access circuit trouble
Check & Remedy
The data of the communication management table in
the SRAM is initialized when an error occurs, register
the deleted data again
Use SIM16 to cancel the error
Replace the MFP PWB
Trouble content
Detail
MFP
Cause
MFPC PWB SRAM trouble
MFPC PWB trouble
Strong external noises
Check & Remedy
Turn OFF/ON the power to initialize the data related
to the content of check sum error, register the deleted
contents again
Use SIM16 to cancel the error
Replace the MFP PWB
Trouble content
Detail
MFP
Cause
MFPC PWB SRAM trouble
MFPC PWB trouble
Strong external noises
Check & Remedy
Use SIM16 to cancel the error. (The check sum error
detection data are calculated again to reset the
proper check sum data.)
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.)
Trouble content
Inconsistency between the manufacturing No. saved
in the PCU PWB and that in the MFPC PWB.
Detail
MFP
Cause
When replacing the PCU PWB or the MFPC PWB,
the EEPROM which was mounted on the PWB before
replacement is not mounted on the new PWB.
MFPC PWB trouble
PCU PWB trouble
Check & Remedy
Check that the EEPROM is properly set.
Check to confirm that the EEPROM which was
mounted on the PWB before replacement is mounted
on the new PWB.
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.)
Replace the PCU PWB.
