Read Sharp MX-M350N / MX-M350U / MX-M450N / MX-M450U (serv.man8) Service Manual online
MX-M350/M450 N/U TROUBLE CODES 11 - 1
[11] TROUBLE CODES
1. General
When a trouble occurs in the machine or when the life of a con-
sumable part is nearly expired or when the life is expired, the
machine detects and displays it on the display section. This allows
the user and the serviceman to take the suitable action. In case of
a trouble, this feature notifies the occurrence of a trouble and
stops the machine to minimize the damage.
sumable part is nearly expired or when the life is expired, the
machine detects and displays it on the display section. This allows
the user and the serviceman to take the suitable action. In case of
a trouble, this feature notifies the occurrence of a trouble and
stops the machine to minimize the damage.
1) Securing safety. (The machine is stopped on detection of a
trouble.)
2) The damage to the machine is minimized. (The machine is
stopped on detection of a trouble.)
3) By displaying the trouble content, the trouble position can be
quickly identified. (This allows to perform an accurate repair,
improving the repair efficiency.)
improving the repair efficiency.)
4) Preliminary warning of running out of consumable parts allows
to arrange for new parts in advance of running out. (This
avoids stopping of the machine due to running out the a con-
sumable part.)
avoids stopping of the machine due to running out the a con-
sumable part.)
2. Trouble codes list
Trouble
codes
Contents
Remark
Trouble
detection
C1
00 MC trouble
PCU
E6
11 CSI shading trouble (White
correction)
When the
scanner is
installed
scanner is
installed
SCANNER
14 CIS communication trouble
When the
scanner is
installed
scanner is
installed
SCANNER
E7
01 System data trouble
ICU
02 Laser trouble
PCU
03 HDD trouble
With HDD
installed
installed
ICU
06 Decode error trouble
ICU
10 Shading trouble (Black
correction)
When the
scanner is
installed
scanner is
installed
SCANNER
11 Shading trouble (White
correction all pixel
adjustment)
adjustment)
When the
scanner is
installed
scanner is
installed
SCANNER
14 CCD communication trouble
When the
scanner is
installed
scanner is
installed
SCANNER
17 SPF scanning position
adjustment trouble (Detected
only when executing an
adjustment SIM.)
only when executing an
adjustment SIM.)
50 LSU connection trouble
PCU
60 Controller skating trouble
80 Communication trouble (ICU
detection) between ICU and
scanner
scanner
When the
scanner is
installed
scanner is
installed
ICU
90 Communication trouble (ICU
detection) between ICU and
PCU
PCU
When the
scanner is
installed
scanner is
installed
ICU
F1
00 Finisher communication
trouble
With
Finisher
installed
Finisher
installed
PCU
Mail-bin stacker
communication trouble
communication trouble
With Mail
bin stacker
installed
bin stacker
installed
PCU
F1
02 Finisher transport motor
abnormality
With
Finisher
installed
Finisher
installed
PCU
Mail-bin stacker transport
motor abnormality
motor abnormality
With Mail
bin stacker
installed
bin stacker
installed
03 Console finisher paddle
motor trouble
With Console
Finisher
installed
Finisher
installed
PCU
06 Console finisher slide motor
trouble
With Console
Finisher
installed
Finisher
installed
PCU
08 Finisher staple shift motor
trouble
With
Finisher
installed
Finisher
installed
PCU
10 Finisher stapler motor trouble With
Finisher
installed
installed
PCU
Console finisher stapler
motor trouble
motor trouble
With Console
Finisher
installed
Finisher
installed
PCU
11 Finisher bundle exit motor
trouble
With Finisher
installed
installed
PCU
Console finisher bundle exit
motor trouble
motor trouble
With Console
Finisher
installed
Finisher
installed
PCU
12 Mail-bin stacker gate trouble
With Mail
bin stacker
installed
bin stacker
installed
PCU
15 Finisher lift motor trouble
With
Finisher
installed
Finisher
installed
PCU
Console finisher lift motor
trouble
trouble
With Console
Finisher
installed
Finisher
installed
PCU
19 Finisher front alignment
motor trouble
With
Finisher
installed
Finisher
installed
PCU
Console finisher front
alignment motor trouble
alignment motor trouble
With Console
Finisher
installed
Finisher
installed
PCU
20 Finisher rear alignment
motor trouble
With
Finisher
installed
Finisher
installed
PCU
Console finisher rear
alignment motor trouble
alignment motor trouble
With Console
Finisher
installed
Finisher
installed
PCU
30 Console finisher
communication trouble
With Console
Finisher
installed
Finisher
installed
PCU
31 Console finisher fold sensor
trouble
With Console
Finisher
installed
Finisher
installed
PCU
32 Communication trouble
between the console finisher
and the punch unit.
and the punch unit.
With Console
Finisher
installed
Finisher
installed
PCU
33 Console finisher punch side
registration motor trouble
With Console
Finisher
installed
Finisher
installed
PCU
34 Console finisher punch motor
trouble
With Console
Finisher
installed
Finisher
installed
PCU
35 Console finisher punch side
registration sensor trouble
With Console
Finisher
installed
Finisher
installed
PCU
Trouble
codes
Contents
Remark
Trouble
detection
MX-M350/M450 N/U TROUBLE CODES 11 - 2
F1
36 Console finisher punch
timing sensor trouble
With Console
Finisher
installed
Finisher
installed
PCU
37 Console finisher backup
RAM trouble
With Console
Finisher
installed
Finisher
installed
PCU
38 Console finisher punch
backup RAM trouble
With Console
Finisher
installed
Finisher
installed
PCU
39 Console finisher punch dust
sensor trouble
With Console
Finisher
installed
Finisher
installed
PCU
40 Console finisher punch
power interruption trouble
With Console
Finisher
installed
Finisher
installed
PCU
80 Finisher power abnormality
With Finisher
installed
installed
PCU
Mail-bin stacker power
abnormality
abnormality
With Mail bin
stacker
installed
stacker
installed
PCU
81 Console finisher transport
motor abnormality
With Console
Finisher
installed
Finisher
installed
PCU
87 Finisher staple rotation motor
trouble
With Finisher
installed
installed
F2
00 Toner control sensor open/
sensor trouble
PCU
02 Toner supply abnormality
PCU
04 Improper cartridge (life cycle
error, etc.)
PCU
05 CRUM error
PCU
06 CRUM ID error
PCU
39 Process thermistor trouble
PCU
F3
12 Machine no. 1 tray lift-up
trouble
PCU
22 Machine tray 2 lift-up trouble Multi-
purpose tray
PCU
F6
00 Communication trouble (ICU
detection) between ICU and
FAX
FAX
When the
Fax board is
installed
Fax board is
installed
ICU
01 FAX expansion flash memory
abnormality (ICU detection)
When the
Fax board is
installed
Fax board is
installed
ICU
04 FAX modem operation
abnormality
When the
Fax board is
installed
Fax board is
installed
FAX
20 FAX write protect cancel
When the
Fax board is
installed
Fax board is
installed
FAX
21 Combination abnormality of
the TEL/LIU PWB and the
FAX soft switch
FAX soft switch
When the
Fax board is
installed
Fax board is
installed
FAX
97 FAX-BOX skating trouble
When the
Fax board is
installed
Fax board is
installed
FAX
98 Combination error of the
FAX-BOX destination
information and the machine
destination information
information and the machine
destination information
When the
Fax board is
installed
Fax board is
installed
FAX
F7
01 FAX board EEPROM read/
write error
When the
Fax board is
installed
Fax board is
installed
FAX
H2
00 Thermistor open (HL1)
PCU
01 Thermistor open (HL2)
PCU
Trouble
codes
Contents
Remark
Trouble
detection
H3
00 Fusing section high
temperature trouble (HL1)
PCU
01 Fusing section high
temperature trouble (HL2)
PCU
H4
00 Fusing section low
temperature trouble (HL1)
PCU
01 Fusing section low
temperature trouble (HL2)
PCU
H5
01 5-time continuous POD1 not-
reaching jam detection
PCU
L1
00 Scanner feed trouble
When the
scanner is
installed
scanner is
installed
SCANNER
L3
00 Scanner return trouble
When the
scanner is
installed
scanner is
installed
SCANNER
L4
01 Main motor lock detection
PCU
02 Drum motor lock detection
PCU
30 Controller fan motor lock
detection
L6
10 Polygon motor lock detection
PCU
L8
01 No fullwave signal
PCU
02 Full wave signal width
abnormality
PCU
U1
01 FAX battery abnormality
With FAX
board
installed
board
installed
Controller
02 RTC read abnormality
(common with FAX, on ICU
PWB)
PWB)
When the
Fax board is
installed
Fax board is
installed
ICU
U2
00 EEPROM read/write error
(ICU)
Controller
11 Counter check sum error
(ICU)
Controller
12 Adjustment value check sum
error (ICU)
Controller
22 SRAM memory check sum
error (ICU)
ICU
23 SRAM memory individual
data check sum error (ICU)
50 HD section individual data
check sum error (ICU)
80 EEPROM read/write error
(Scanner)
When the
scanner is
installed
scanner is
installed
SCANNER
81 Memory check sum error
(Scanner)
When the
scanner is
installed
scanner is
installed
SCANNER
90 EEPROM read/write error
(PCU)
PCU
91 Memory check sum error
(PCU)
PCU
U6
00 Desk/LCC communication
trouble
With Paper
feed desk
installed
feed desk
installed
PCU
01 Desk/LCC No. 1 tray lift-up
trouble
With Paper
feed desk
installed
feed desk
installed
PCU
02 Desk No. 2 tray/LCC1 lift-up
trouble
With Paper
feed desk
installed
feed desk
installed
PCU
03 Desk No. 3 tray/LCC2 lift-up
trouble
With Paper
feed desk
installed
feed desk
installed
PCU
10 Desk/LCC transport motor
trouble
With Paper
feed desk
installed
feed desk
installed
PCU
Trouble
codes
Contents
Remark
Trouble
detection
MX-M350/M450 N/U TROUBLE CODES 11 - 3
3. Details of trouble codes
U7
00 RIC communication trouble
Controller
CH
--
Door open (CH ON)
PCU
00 No developer cartridge
PCU
01 No toner cartridge
PCU
02 No drum cartridge
PCU
EE EL Auto developer adjustment
trouble (Over-toner)
Only during
DIAG
DIAG
PCU
EU Auto developer adjustment
trouble (Under-toner)
Only during
DIAG
DIAG
PCU
PC
--
Personal counter not
installed
installed
Controller
PF
--
RIC copy inhibit signal is
received.
received.
Controller
--
--
Auditor not ready
Controller
MAIN SUB
Details
C1
00
Content
MC trouble
Detail
Main charger output abnormality
(Output open)
Trouble signal is outputted from the
high voltage transformer.
(Output open)
Trouble signal is outputted from the
high voltage transformer.
Cause
The main charger is not installed
properly.
The main charger is not assembled
properly.
Disconnection of connector of high
voltage transformer.
High voltage harness disconnection or
breakage.
properly.
The main charger is not assembled
properly.
Disconnection of connector of high
voltage transformer.
High voltage harness disconnection or
breakage.
Check and
remedy
remedy
Use the SIM 8-2 to check the main
charger output.
Check for disconnection of the main
charger.
Replace the high voltage unit.
charger output.
Check for disconnection of the main
charger.
Replace the high voltage unit.
E6
11
Content
CSI shading trouble (White correction)
Details
The CIS white reference plate scan
level is abnormal when the lamp is on.
level is abnormal when the lamp is on.
Cause
Abnormal harness installation to CIS
unit
Dirt on the white reference plate.
CIS lighting error
CIS unit installation trouble
CIS unit abnormality
Scanner PWB abnormality
unit
Dirt on the white reference plate.
CIS lighting error
CIS unit installation trouble
CIS unit abnormality
Scanner PWB abnormality
Check &
Remedy
Remedy
Clean the white reference plate.
Check CIS light quantity (SIM 5-3) and
lighting.
Check CIS unit harness.
Check scanner PWB.
Check CIS light quantity (SIM 5-3) and
lighting.
Check CIS unit harness.
Check scanner PWB.
14
Content
CIS communication trouble
Details
Communication trouble (clock sync)
between scanner PWB and CIS-ASIC
between scanner PWB and CIS-ASIC
Cause
Abnormal harness installation to CIS
unit
CIS unit abnormality
Scanner PWB abnormality
unit
CIS unit abnormality
Scanner PWB abnormality
Check &
Remedy
Remedy
Check CIS unit harness.
Check CIS unit.
Check scanner PWB.
Check CIS unit.
Check scanner PWB.
Trouble
codes
Contents
Remark
Trouble
detection
E7
01
Content
System data trouble
Detail
When in data storage/acquiring of the
HDD system area, the HDD responds
an error and does not respond for
30sec, it is judged as a trouble.
HDD system area, the HDD responds
an error and does not respond for
30sec, it is judged as a trouble.
Cause
The HDD is not properly installed to the
ICU PWB.
The HDD does not work for the ICU
PWB.
ICU PWB abnormality
ICU PWB.
The HDD does not work for the ICU
PWB.
ICU PWB abnormality
Check and
remedy
remedy
Check installation of the HDD to the
ICU PWB.
Check harness connection of the HDD
from the ICU PWB.
Use SIM62-2, 3 to check the HDD
read/write.
Replace the HDD.
Replace the ICU PWB.
ICU PWB.
Check harness connection of the HDD
from the ICU PWB.
Use SIM62-2, 3 to check the HDD
read/write.
Replace the HDD.
Replace the ICU PWB.
E7
02
Content
Laser trouble
Detail
BD signal from LSU is kept OFF, or ON.
Cause
The connector of LSU or the harness in
LSU is disconnected or broken.
The polygon motor does not rotate
normally.
The laser home position sensor in LSU
is shifted.
The proper voltage is not supplied to
the power line for laser.
Laser emitting diode trouble
PCU PWB trouble
ICU PWB trouble
LSU is disconnected or broken.
The polygon motor does not rotate
normally.
The laser home position sensor in LSU
is shifted.
The proper voltage is not supplied to
the power line for laser.
Laser emitting diode trouble
PCU PWB trouble
ICU PWB trouble
Check and
remedy
remedy
Check for disconnection of the LSU
connector.
Use SIM 61-1 to check LSU operation.
Check that the polygon motor rotates
normally or not.
Check light emission of laser emitting
diode.
Replace the LSU unit.
Replace the PCU PWB.
Replace the ICU PWB.
connector.
Use SIM 61-1 to check LSU operation.
Check that the polygon motor rotates
normally or not.
Check light emission of laser emitting
diode.
Replace the LSU unit.
Replace the PCU PWB.
Replace the ICU PWB.
03
Content
HDD trouble
Detail
HDD connection failure
If the HDD responds an error or does
not respond for 30sec, it is judged as
an error. (Other than the system area)
Data abnormality in the file
management area (when the cluster
chain is broken)
If the HDD responds an error or does
not respond for 30sec, it is judged as
an error. (Other than the system area)
Data abnormality in the file
management area (when the cluster
chain is broken)
Cause
HDD is not installed properly to the ICU
PWB.
HDD does not operate properly in the
ICU PWB.
ICU PWB trouble
PWB.
HDD does not operate properly in the
ICU PWB.
ICU PWB trouble
Check and
remedy
remedy
Check installation of HDD to the ICU
PWB.
Check connection of the harness of
HDD to the ICU PWB.
Use SIM 62-2, -3 to check read/write of
HDD.
Replace HDD.
Replace ICU PWB.
PWB.
Check connection of the harness of
HDD to the ICU PWB.
Use SIM 62-2, -3 to check read/write of
HDD.
Replace HDD.
Replace ICU PWB.
MAIN SUB
Details
MX-M350/M450 N/U TROUBLE CODES 11 - 4
E7
06
Content
Decode error trouble
Detail
A decode error occurs during making of
an image.
an image.
Cause
Data error during input from PCI to PM.
PM trouble
Data error during image compression/
transfer.
ICU PWB abnormality
PM trouble
Data error during image compression/
transfer.
ICU PWB abnormality
Check and
remedy
remedy
Check insertion of the PWB. (PCI bus)
If the error occurred in a FAX job, check
installation of the FAX PWB.
For the other cases, check the ICU
PWB.
Replace the ICU PWB.
If the error occurred in a FAX job, check
installation of the FAX PWB.
For the other cases, check the ICU
PWB.
Replace the ICU PWB.
10
Content
Shading trouble (Black correction)
Details
CCD black scan level abnormality
when the copy lamp is off.
when the copy lamp is off.
Cause
Abnormal installation of flat cable to
CCD unit.
CCD unit abnormality
Scanner PWB abnormality
CCD unit.
CCD unit abnormality
Scanner PWB abnormality
Check &
Remedy
Remedy
Check installation of CCD unit flat
cable.
Check CCD unit.
Check scanner PWB.
cable.
Check CCD unit.
Check scanner PWB.
11
Content
Shading trouble
(White correction all
pixel adjustment)
Details
CCD white reference plate scan level
abnormality when the copy lamp is ON.
abnormality when the copy lamp is ON.
Cause
Abnormal installation of flat cable to
CCD unit.
Dirt on mirror, lens, white reference
plate
Copy lamp lighting abnormality
Abnormal installation of CCD unit
CCD unit abnormality
Scanner PWB abnormality
CCD unit.
Dirt on mirror, lens, white reference
plate
Copy lamp lighting abnormality
Abnormal installation of CCD unit
CCD unit abnormality
Scanner PWB abnormality
Check &
Remedy
Remedy
Clean mirror, lens, and white reference
plate.
Check copy lamp light quantity (SIM 5-
3) and lighting.
Check CCD unit.
Check scanner PWB.
plate.
Check copy lamp light quantity (SIM 5-
3) and lighting.
Check CCD unit.
Check scanner PWB.
14
Content
CCD communication trouble
Details
Communication trouble (clock sync)
between scanner PWB and CCD-ASIC
between scanner PWB and CCD-ASIC
Cause
Abnormal installation of harness to
CCD unit
CCD unit abnormality
Scanner PWB abnormality
CCD unit
CCD unit abnormality
Scanner PWB abnormality
Check &
Remedy
Remedy
Check CCD unit harness.
Check CCD unit.
Check scanner PWB.
Check CCD unit.
Check scanner PWB.
17
Content
SPF scanning position adjustment
trouble (Detected only when executing
an adjustment SIM.)
trouble (Detected only when executing
an adjustment SIM.)
Details
The black Mylar which serves as the
reference of the SPF scanning position
is not detected.
reference of the SPF scanning position
is not detected.
Cause
Black Mylar installing failure on the
SPF side
SPF side
Check &
Remedy
Remedy
Check the SPF black Mylar.
MAIN SUB
Details
E7
50
Content
LSU connection trouble
Detail
An LSU which does not conform to the
machine is installed.
machine is installed.
Cause
LSU connection trouble
PCU PWB trouble
LSU trouble
PCU PWB trouble
LSU trouble
Check and
remedy
remedy
Check LSU PWB. Check PCU PWB.
Check connection of the connector and
the harness between PCU and LSU.
Check connection of the connector and
the harness between PCU and LSU.
60
Content
Controller skating trouble
Detail
Occurrence of an error in controller
skating check
skating check
Cause
Discrepancy in the combination of the
controller PWB and the ROM
controller PWB and the ROM
Check and
remedy
remedy
Check the controller PWB.
Check the combination of the controller
PWB and the ROM.
Check the combination of the controller
PWB and the ROM.
80
Content
Communication trouble (ICU detection)
between ICU and scanner
between ICU and scanner
Details
Communication establishment error/
Fleming/Parity/Protocol error
Fleming/Parity/Protocol error
Cause
Defective connection of slave unit PWB
connector
Defective harness between slave unit
PWB and ICU PWB
Slave unit PWB mother board
connector pin breakage
connector
Defective harness between slave unit
PWB and ICU PWB
Slave unit PWB mother board
connector pin breakage
Check &
Remedy
Remedy
Check connector and harness of slave
unit PWB and ICU PWB.
Check grounding of machine.
unit PWB and ICU PWB.
Check grounding of machine.
90
Content
Communication trouble (ICU detection)
between ICU and PCU
between ICU and PCU
Details
Communication establishment error/
Fleming/Parity/Protocol error
Fleming/Parity/Protocol error
Cause
Defective connection of slave unit PWB
connector
Defective harness between slave unit
PWB and ICU PWB
Slave unit PWB mother board
connector pin breakage
connector
Defective harness between slave unit
PWB and ICU PWB
Slave unit PWB mother board
connector pin breakage
Check &
Remedy
Remedy
Check connector and harness of slave
unit PWB and ICU PWB.
Check grounding of machine.
unit PWB and ICU PWB.
Check grounding of machine.
F1
00
Content
Finisher communication trouble
Detail
Communication cable test error after
turning on the power or exiting from
SIM.
Communication error with the finisher
turning on the power or exiting from
SIM.
Communication error with the finisher
Cause
Improper connection or disconnection
of connectors and harness between
the machine and the finisher.
Finisher control PWB trouble
Control PWB (PCU) trouble
Malfunction by noises
of connectors and harness between
the machine and the finisher.
Finisher control PWB trouble
Control PWB (PCU) trouble
Malfunction by noises
Check and
remedy
remedy
Canceled by turning OFF/ON the
power.
Check connectors and harness in the
communication line.
Replace the finisher control PWB or
PCU PWB.
power.
Check connectors and harness in the
communication line.
Replace the finisher control PWB or
PCU PWB.
MAIN SUB
Details