Service manual

AR-M351U/M451U, AR-M355U/M455U TROUBLE CODES 11 - 8
F2 58 Content Process humidity sensor breakdown
Detail Process humidity sensor open or short
Cause Temperature/humidity sensor harness
connection failure
Temperature/humidity sensor
abnormality
PCU PWB trouble
Check and
remedy
Check connection of the harness and
the connector of the temperature/
humidity sensor.
Replace the temperature/humidity
sensor.
Check PCU PWB.
F3 12 Content Machine no. 1 tray lift-up trouble
Detail LUD does not turn ON in the specified
time.
Cause LUD trouble
No. 1 tray lift-up trouble
Check connection of harness between
the PCVU PWB, lift-up unit, and paper
feed unit.
Check and
remedy
Check LUD, and their harness and
connectors.
Check the lift-up unit.
F3 22 Content Machine tray 2 lift-up trouble
Detail MCLUD does not turn ON in the
specified time.
Cause MCLUD trouble
No. 2 tray lift-up motor trouble
Harness disconnection f the PCU
PWB, the lift-up unit, and the paper
feed unit.
Check and
remedy
Check MCLUD, and their harness and
connectors.
Check the lift-up unit.
F6 00 Content Communication trouble (ICU detection)
between ICU and FAX
Details Communication establishment error/
Fleming/Parity/Protocol error
Cause Slave unit PWB connector
disconnection
Harness abnormality between slave
unit PWB and ICU PWB.
Slave unit PWB mother board
connector pin breakage
Slave unit ROM abnormality/No ROM/
Reverse insertion of ROM/ROM pin
breakable
Check &
Remedy
Check connector harness between
slave unit PWB and ICU PWB.
Check grounding of machine.
Check slave unit PWB ROM.
01 Content FAX expansion flash memory
abnormality (ICU detection)
Details Flash memory cannot be deleted.
Cause Flash memory cannot be deleted.
Check &
Remedy
Check the FAX image storage Flash
memory.
Use SIM 66-10 to clear the flash
memory.
MAIN SUB Details
F6 04 Content FAX modem operation abnormality
Details FAX PWB modem chip operation
abnormality
Cause SW101 in the FAX PWB tries to
perform normal operation on the boot
side.
Modem chip operation abnormality in
FAX PWB
Check &
Remedy
Set SW101 on the FAX PWB to other
than the boot side, and turn on the
power again.
Replace FAX PWB.
20 Content FAX write protect cancel
Detail The write protect JP is released.
Cause The write protect JP is set to “write
allow.”
FAX interface PWB trouble
FAX PWB trouble
Check and
remedy
Check the write protect JP.
Replace the FAX PWB. Replace the
FAX interface PWB.
21 Content Combination abnormality of the TEL/
LIU PWB and the FAX soft switch
Detail Combination abnormality of the TEL/
LIU PWB and the FAX PWB
information (soft switch)
Or the TEL/LIU PWB is not a new one
for new MDMC PWB.
Cause The destination of the installed TEL/LIU
PWB differs.
The FAX PWB information (soft switch)
differs.
TEL/LIU PWB trouble
Check and
remedy
Check the destination of the TEL/LIU
PWB.
Check the FAX PWB information (soft
switch).
Replace the TEL/LIU PWB.
97 Content FAX-BOX skating trouble
The FAX-BOX PWB is not one for the
AR-FX12. (FAX detection)
Detail The FAX-BOX MODEM controller is
not one for the AR-FX12.
Cause The FAX-BOX Modem controller PWB
information (hard detection) is not for
the AR-FX12. (The Modem controller
PWB for the AR-FX5 or the AR-FX6 is
used.)
Check and
remedy
Check the FAX-BOX modem controller
PWB.
Replace it with a modem controller
PWB for the AR-FX12.
98 Content Combination error of the FAX-BOX
destination information and the
machine destination information
Detail Combination error of the FAX-BOX
destination information and the
machine destination information
Cause Because of improper combination
between the destination information
stored in the EEPROM on the FAX-
BOX PWB and that of the machine (set
with SIM 26-6).
Check and
remedy
Check the destination of the FAX-BOX.
Check the machine destination with
SIM 26-6.
Use a proper combination of the
machine and the FAX-BOX.
MAIN SUB Details