Sharp MX-M350N / MX-M350U / MX-M450N / MX-M450U (serv.man8) Service Manual ▷ View online
MX-M350/M450 N/U TROUBLE CODES 11 - 13
4. Other related items
(1) Self diag operation
The machine always monitors its own status. When it detects any
abnormality or a status which requires warning, it performs the self
diag operation to display the trouble or warning message as fol-
lows:
abnormality or a status which requires warning, it performs the self
diag operation to display the trouble or warning message as fol-
lows:
(2) Power ON trouble detection function
• When the power is turned on, if the stored trouble is H3, H4, H5,
U1, U2, PF, or U6 (sub code 2, 3), it is immediately judged as a
trouble.
trouble.
∗
E7-50 and 60 are not judged as a storing trouble, (Detected
every time when the power is turned on.)
every time when the power is turned on.)
(3) Basic flow of countermeasures
EE
EU
Content
Auto developer adjustment trouble
(Under-toner)
(Under-toner)
Detail
The toner concentration output is
detected as 3.5V or above in the auto
development adjustment.
detected as 3.5V or above in the auto
development adjustment.
Cause
Insufficient toner concentration
Charging voltage, developing voltage
abnormality
Insufficient toner concentration
Developing unit trouble
PCU PWB trouble
Charging voltage, developing voltage
abnormality
Insufficient toner concentration
Developing unit trouble
PCU PWB trouble
Check and
remedy
remedy
Use SIM25-2 to perform auto developer
adjustment.
adjustment.
PF
00
Content
RIC copy inhibit signal is received.
Detail
Copy inhibit command from RIM (host)
is received.
is received.
Cause
Judged by the host.
Check and
remedy
remedy
Inform to the host.
Warning
Content
This message is displayed to warn
mainly the user to inform that a
consumable part is near life, etc. It is
no direct relation with machine
troubles.
mainly the user to inform that a
consumable part is near life, etc. It is
no direct relation with machine
troubles.
Machine
operation
operation
The machine operation may be
stopped and may be not.
stopped and may be not.
Message
clear
clear
The message may be automatically
cleared by replacement or supply of
the consumable part, or may be
cleared by the specified simulation
operation.
cleared by replacement or supply of
the consumable part, or may be
cleared by the specified simulation
operation.
Trouble
Content
This message is a trouble message
related to a machine trouble.
related to a machine trouble.
Machine
operation
operation
The machine operation is stopped.
Message
clear
clear
This message may be automatically
cleared by repairing the trouble, or
may be cleared by the specified
simulation operation.
cleared by repairing the trouble, or
may be cleared by the specified
simulation operation.
MAIN SUB
Details
Trouble code
Storing
Trouble cancel command
simulation
H3, H4, H5
PCU
SIM 14
U1
ICU
SIM 13
U2
Each block
SIM 16
PF
ICU
SIM 17
U6-2, 3
PCU
SIM 15
Troubleshoot the cause.
YES
NO
Detects/analyzes
the content.
Trouble/Warning
Warning
Trouble
The machine is stopped.
The content is displayed.
Trouble/Warning
Warning
A consumable
part has reached
its lifetime.
Trouble
Replace or supply
the consumable part.
Cancel the self-
diagnostic message with
the diagnostics
(test commands).
Reset
Standby state
Monitors the machine
conditions.
Repair
MX-M350/M450 N/U TROUBLE CODES 11 - 14
(4) List of trouble modes
● Troubles where the machine can be operated under some conditions
When a trouble occurs, the dialogue is displayed and OK button is added to the trouble message.
● Troubles where the machine cannot be operated
When a trouble occurs, the dialogue is displayed. OK button is not added to the trouble massage, and only setting can be performed. The
message remains displayed until the trouble is canceled.
message remains displayed until the trouble is canceled.
∗
For FAX communication, refer to the “(5) Communication speci-
fication when a trouble occurs.”
fication when a trouble occurs.”
∗
The machine may be operated under some conditions.
∆
1: When detected except when in a job, the machine can be
operated in the OC mode.
∆
2: Can be operated except in the staple mode.
∆
3: When detected except in a job, the machine can be operated
except with the breakdown tray.
∆
4: Can be operated with some restriction on the image quality
depending on the destination. (Low density print)
∆
5: When detected except in a job, can be operated except in the
trouble paper exit section.
∆
6: When detected except in a job, can be operated in the single
surface scan mode.
Trouble content
Judgment
block
Trouble code
Operation enable mode
Copy read
(including
interrupt)
FAX
send
Email
receive
FAX
print
Print
List
print
Notification
to
FASThost
Scanner section breakdowns (Mirror
motor, lens, copy lamp)
motor, lens, copy lamp)
Scanner
L1, L3, U2 (80, 81)
✕
✕
✕
❍
❍
❍
❍
FAX board breakdown
ICU/FAX F6, F7
❍
✕
❍
✕
❍
❍
✕
FAX power OFF
ICU
❍
✕
❍
✕
❍
❍
✕
Network error
ICU
CE
❍
❍
✕
❍
❍
❍
✕
Staple breakdown
PCU
F1 (10)
∆
2
❍
❍
∆
2
∆
2
∆
2
❍
Paper feed tray breakdown
PCU
F3, U6 (LCC)
∆
3
❍
❍
∆
3
∆
3
∆
3
❍
PCU section breakdowns (Motor,
fusing section, etc.)
fusing section, etc.)
PCU
C1, C2, C3, H2, H3, H4,
H5, L4 (excluding L4-30),
L8, U2 (90, 91), F2
H5, L4 (excluding L4-30),
L8, U2 (90, 91), F2
✕
❍
❍
✕
✕
✕
❍
After-process breakdown
PCU
F1
∆
5
❍
❍
∆
5
∆
5
∆
5
❍
Laser breakdown
PCU
E7 (02 only), L6
✕
❍
❍
✕
✕
✕
❍
HDD breakdown
ICU
E7 (03)
✕
✕
✕
✕
✕
✕
❍
CCD breakdowns (Shading, etc.)
Scanner E7 (10, 11, 14)
✕
✕
✕
❍
❍
❍
❍
CIS breakdowns (Shading, etc.)
Scanner E6 (10, 11, 14)
∆
6
∆
6
∆
6
❍
❍
❍
❍
Scanner communication trouble
ICU
E7 (80)
✕
✕
✕
❍
❍
❍
❍
PCU communication trouble
ICU
E7 (90)
✕
✕
✕
✕
✕
✕
❍
FAX backup battery voltage fall
ICU
U1 (01, 02)
❍
✕
✕
❍
❍
❍
❍
HDD registration data sum error
ICU
U2 (50)
❍
✕
✕
❍
❍
❍
❍
Thermistor trouble (trouble history)
PCU
F2 (39, 58)
❍
❍
❍
❍
❍
❍
❍
Trouble content
Judgment
block
Trouble code
Operation enable mode
Copy read
(including
interrupt)
FAX
send
Email
receive
FAX
print
Print
List
print
Notification
to
FASThost
Memory
ICU
U2 (00, 11, 12, 22, 23)
✕
✕
✕
✕
✕
✕
❍
External communication disable
(RICA)
(RICA)
ICU
U7, PF
✕
✕
✕
✕
✕
✕
❍
Image memory trouble, decode error
ICU
E7 (01, 06)
✕
✕
✕
✕
✕
✕
❍
Skating check error
ICU/PCU E7 (50, 60)
✕
✕
✕
✕
✕
✕
✕
Controller fan motor trouble
ICU
L4-30
✕
✕
✕
✕
✕
✕
✕
MX-M350/M450 N/U TROUBLE CODES 11 - 15
(5) Communication specification when a trouble occurs
The image send/receive specifications when a trouble occurs are as shown below.
∆
2: Enable except for the trouble tray
∗
When, however, a paper feed tray trouble is detected during a job, the engine is stopped and printing is disabled.
∆
3: The display goes to the FAX status check menu and the list can be printed.: The received document is outputted.
∆
4: Paper exit is enabled except for the trouble paper exit tray
∗
When, however, a paper feed tray trouble is detected during a job, the engine is stopped and printing is disabled.
∆
5: Only the operation related to image quality can be executed depending on the destination. (low density print)
∆
6: The operation can be executed in the single surface scanning mode.
(6) Writing to the trouble memory
(SIMULATION. 26-35)
Trouble
Send
reservation
Print
FAX call
request
FAX
call-in
LAN
send
LAN
receive
Precaution
PCU breakdowns (Excluding C1,
C2, C3, H2, H3, H4, H5, L4, L8, U2-
90, U2-91, and skating check error)
C2, C3, H2, H3, H4, H5, L4, L8, U2-
90, U2-91, and skating check error)
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Scanner breakdowns (L1, L3, U2-
80, U2-81)
80, U2-81)
×
❍
❍
❍
❍
❍
F6, F7 (FAX breakdown)
×
❍
×
×
❍
❍
F1 (Paper exit section breakdown)
❍
∆
4
❍
❍
❍
❍
F3, U6 (Paper feed tray breakdown)
❍
∆
2
❍
❍
❍
❍
E7 (01, 06) (ICU breakdown)
×
×
×
×
❍
❍
E7-02 (Laser breakdown)
❍
×
❍
❍ Note
×
❍ Note
There is a risk that the memory is full.
E7-03 (HD breakdown)
×
×
×
×
×
×
E7 (10, 11, 14) (CCD breakdown)
×
❍
❍
❍
❍
❍
E6 (10, 11, 14) (CIS breakdown)
∆
6
❍
❍
❍
❍
❍
E7-80 (Scanner communication
trouble)
trouble)
×
❍
❍
❍
❍
❍
E7-90 (PCU communication trouble)
×
×
×
×
×
×
E7 (50, 60) (Skating check error)
×
×
×
×
×
×
U2 (00, 11, 12, 22) (ICU memory
error)
error)
×
×
×
×
×
×
U2 (22, 23) (SRAM check sum
error)
error)
×
×
×
×
×
×
U2-50 (HD check sum error)
×
×
×
×
×
×
U7 (RIC external communication
disable), PF
disable), PF
×
×
×
×
×
×
Inhibition of use by a customer
having outstanding fee
having outstanding fee
U1 (Backup battery voltage fall)
×
∆
3
× Note
×
× Note
×
Transfer enable
L4-30 (Controller fan motor trouble)
×
×
×
×
×
×
Door open
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Toner empty
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Process cartridge uninstalled, etc.
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Paper empty
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Paper JAM
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Document JAM
×
❍
❍
❍
❍
❍
Simulation
×
×
×
×
×
×
Key operation (Communication
disable)
disable)
×
×
×
×
×
×
MX-M350/M450 N/U TROUBLE CODES 11 - 15
(5) Communication specification when a trouble occurs
The image send/receive specifications when a trouble occurs are as shown below.
∆
2: Enable except for the trouble tray
∗
When, however, a paper feed tray trouble is detected during a job, the engine is stopped and printing is disabled.
∆
3: The display goes to the FAX status check menu and the list can be printed.: The received document is outputted.
∆
4: Paper exit is enabled except for the trouble paper exit tray
∗
When, however, a paper feed tray trouble is detected during a job, the engine is stopped and printing is disabled.
∆
5: Only the operation related to image quality can be executed depending on the destination. (low density print)
∆
6: The operation can be executed in the single surface scanning mode.
(6) Writing to the trouble memory
(SIMULATION. 26-35)
Trouble
Send
reservation
Print
FAX call
request
FAX
call-in
LAN
send
LAN
receive
Precaution
PCU breakdowns (Excluding C1,
C2, C3, H2, H3, H4, H5, L4, L8, U2-
90, U2-91, and skating check error)
C2, C3, H2, H3, H4, H5, L4, L8, U2-
90, U2-91, and skating check error)
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Scanner breakdowns (L1, L3, U2-
80, U2-81)
80, U2-81)
×
❍
❍
❍
❍
❍
F6, F7 (FAX breakdown)
×
❍
×
×
❍
❍
F1 (Paper exit section breakdown)
❍
∆
4
❍
❍
❍
❍
F3, U6 (Paper feed tray breakdown)
❍
∆
2
❍
❍
❍
❍
E7 (01, 06) (ICU breakdown)
×
×
×
×
❍
❍
E7-02 (Laser breakdown)
❍
×
❍
❍ Note
×
❍ Note
There is a risk that the memory is full.
E7-03 (HD breakdown)
×
×
×
×
×
×
E7 (10, 11, 14) (CCD breakdown)
×
❍
❍
❍
❍
❍
E6 (10, 11, 14) (CIS breakdown)
∆
6
❍
❍
❍
❍
❍
E7-80 (Scanner communication
trouble)
trouble)
×
❍
❍
❍
❍
❍
E7-90 (PCU communication trouble)
×
×
×
×
×
×
E7 (50, 60) (Skating check error)
×
×
×
×
×
×
U2 (00, 11, 12, 22) (ICU memory
error)
error)
×
×
×
×
×
×
U2 (22, 23) (SRAM check sum
error)
error)
×
×
×
×
×
×
U2-50 (HD check sum error)
×
×
×
×
×
×
U7 (RIC external communication
disable), PF
disable), PF
×
×
×
×
×
×
Inhibition of use by a customer
having outstanding fee
having outstanding fee
U1 (Backup battery voltage fall)
×
∆
3
× Note
×
× Note
×
Transfer enable
L4-30 (Controller fan motor trouble)
×
×
×
×
×
×
Door open
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Toner empty
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Process cartridge uninstalled, etc.
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Paper empty
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Paper JAM
❍
×
❍
❍ Note
❍
❍ Note
There is a risk that the memory is full.
Document JAM
×
❍
❍
❍
❍
❍
Simulation
×
×
×
×
×
×
Key operation (Communication
disable)
disable)
×
×
×
×
×
×
