DOWNLOAD Sharp AR-M351U / AR-M451U (serv.man19) Service Manual ↓ Size: 185.89 KB | Pages: 16 in PDF or view online for FREE

Model
AR-M351U AR-M451U (serv.man19)
Pages
16
Size
185.89 KB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Trouble Codes
File
ar-m351u-ar-m451u-sm19.pdf
Date

Sharp AR-M351U / AR-M451U (serv.man19) Service Manual ▷ View online

AR-M351U/M451U, AR-M355U/M455U  TROUBLE CODES  11 - 9
F7
01
Content
FAX board EEPROM read/write error
Details
EEPROM access error (read/write)
Cause
EEPROM trouble
FAX PWB EEPROM access circuit 
trouble
Check & 
Remedy
When replacing the EEPROM, use 
SIM66-4/5 (Signal send level)  and 
SIM66-14/15/16 (Dial test) for 
adjustment. However, note that all the 
soft switches are reset to the initial 
values.
No need to adjust when the PWB is 
replaced.
H2
00···
HL1
01···
HL2
Content
Thermistor open
Fusing unit not installed
Detail
Thermistor is open. 
(An input voltage of 2.92V or above is 
detected.)
Fusing unit not installed
Cause
Thermistor trouble
Control PWB trouble
Fusing section connector 
disconnection
AC power trouble
Fusing unit not installed
Check and 
remedy
Check harnesses and connectors from 
the thermistor to the control PWB.
Use SIM14 to clear the self diag 
display.
H3
00···
HL1
01···
HL2
Content
Fusing section high temperature 
trouble
Detail
The fusing temperature exceeds 
242°C. (An input voltage of 0.27V or 
above is detected.)
Fusing temperature control is started, 
and 242°C is detected three or more 
times continuously in sampling in the 
specified interval. (Every 300msec) 
Cause
Thermistor trouble
Control PWB trouble
Fusing section connector 
disconnection
AC power trouble
Check and 
remedy
Use SIM5-2 to check the heater lamp
Blinking operation.
If the heater lamp blinks normally:
Check the thermistor and its 
harness.
Check the thermistor input circuit in 
the control PWB.
If the heater lamp keep lighting:
Check the AC PWB and the lamp 
control circuit in the control PWB.
Use SIM14 to cancel the trouble
MAIN SUB
Details
H4
00···
HL1
01···
HL2
Content
Fusing section low temperature trouble
Detail
The set temperature is not reached 
within the specified time (3 min) after 
turning on the power relay, or the 
temperature does not reach 80°C 
within 80 sec.
When the heater lamp is not turned off 
in the specified time (3 min) from 
starting warm-up, or the temperature 
does not reach 80°C within 80 sec.
After completion of warm-up operation, 
a temperature 50°C lower than the 
temperature control level is detected 5 
times continuously in sampling in the 
specified interval. (every 300msec)
Cause
Thermistor trouble
Heater lamp trouble
Control PWB trouble
Thermostat trouble
AC power trouble
Interlock switch trouble
Check and 
remedy
Use SIM5-2 to check the heater lamp
Blinking operation.
If the heater lamp blinks normally:
Check the thermistor and its 
harness.
Check the thermistor input circuit in 
the control PWB.
If the heater lamp does not light:
Check for heater lamp disconnection 
and thermostat disconnection.
Check the interlock switch.
Check the AC PWB and the lamp 
control circuit in the control PWB.
Use SIM14 to cancel the trouble.
H5
01
Content
5-time continuous POD1 not-reaching 
jam detection
Detail
5-time continuous POD1 not-reaching 
jam detection
Cause
A fusing section jam is not properly 
removed. (Jam paper remains.)
POD1 sensor trouble, or harness 
disconnection
Improper installation of fusing unit
Check and 
remedy
Check jam paper in the fusing section. 
(winding, etc.)
Check POD1 sensor harness, and 
check  the fusing unit installation.
Use SIM14 to cancel the trouble.
L1
00
Content
Scanner feed trouble
Details
Scanner feed is not completed within 
the specified time.
Cause
Scanner unit abnormality
Scanner wire disconnection
Check & 
Remedy
Check scanning with SIM 1-1.
L3
00
Content
Scanner return trouble
Details
Scanner return is not completed within 
the specified time.
Cause
Scanner unit abnormality
Scanner wire disconnection
Check & 
Remedy
Check scanning with SIM 1-1.
MAIN SUB
Details
AR-M351U/M451U, AR-M355U/M455U  TROUBLE CODES  11 - 10
L4
01
Content
Main motor lock detection
Detail
The motor lock signal is detected for 
1.5sec during rotation of the main 
motor.
Cause
main motor trouble
Check connection of harness between 
the PCU PWB and the main motor. 
Control circuit trouble
Check and 
remedy
Use SIM25-1 to check the main motor 
operation.
Check harness and connector between 
the PCU PWB and the main motor.
02
Content
Drum motor lock detection
Detail
The motor lock signal is detected for 
1.5sec during rotation of the drum 
motor.
Cause
Drum motor trouble
Improper connection of harness 
between the PCU PWB and the drum 
motor.
Control circuit trouble
Check and 
remedy
Use SIM6-1 to check the drum motor 
operation.
Check harness and connector between 
the PCU PWB and the drum motor.
30
Content
Controller fan motor lock detection
Detail
The motor lock signal is detected 
during rotation of the controller fan 
motor.
The motor lock signal is detected 
during rotation of the HDD fan motor.
Cause
Fan motor trouble
Improper connection of the harness 
between the controller PWB and the 
fan motor.
Control circuit trouble
Check and 
remedy
Use SIM 6-2 to check the fan motor 
operation.
Check the harness and the connector 
between the controller PWB and the 
fan motor.
L6
10
Content
Polygon motor lock detection
Detail
It is judged that the polygon motor lock 
signal is not outputted.
Lock signal is checked in the interval of 
10sec after starting the polygon motor, 
and it is judged that the polygon motor 
does not rotate normally.
Cause
The LSU connector or harness in the 
LSU is disconnected or broken.
Polygon motor trouble
Check and 
remedy
Use SIM61-1 to check the polygon 
motor operation.
Check connector and harness 
connection.
Replace LSU.
MAIN SUB
Details
L8
01
Content
No fullwave signal
Detail
Full wave signal is not detected.
Cause
The PCU PWB connector or the power 
unit harness is disconnected or broken.
PCU PWB trouble
12V power source trouble
Check and 
remedy
Check connection of the harness and 
connector.
Replace PCU PWB.
Replace the power unit.
Replace the controller connection 
mother board.
02
Content
Full wave signal width abnormality
Detail
It is judged as full wave signal 
frequency abnormality. 
(When the detection cycle is judged as 
69Hz or above or 42.5Hz or below)
Cause
The connector or harness of the PCU 
PWB and the power PWB is 
disconnected.
PCU PWB trouble
Power unit trouble
Check and 
remedy
Check connection of the harness and 
connector.
Replace the PCU PWB.
Replace the power unit. 
U1
01
Content
FAX battery abnormality
Detail
FAX backup SRAM battery voltage fall
Cause
Battery life
Battery circuit abnormality
Check and 
remedy
Check that the battery voltage is about 
2.5V or above.
Check the battery circuit. 
02
Content
RTC read abnormality 
(common with FAX, on ICU PWB)
Details
The value read from RTC on ICU PWB 
is [EE]h (abnormal).
Cause
RTC circuit abnormality
Battery voltage fall
Battery circuit abnormality
Check & 
Remedy
Set the time again with key operation, 
and check that time advances properly.
Check RTC circuit.
Check that battery voltage is about 
2.5V or above.
Check battery circuit. 
U2
00
Content
EEPROM read/write error (ICU)
Detail
EEPROM write error
Cause
EEPROM trouble
EEPROM is not initialized.
ICU PWB EEPROM access circuit 
trouble
Check and 
remedy
Check that EEPROM is properly 
inserted. 
Save the counter/adjustment values 
with the  simulation.
Use SIM16 to cancel U2 trouble.
Replace the ICU PWB.
MAIN SUB
Details
AR-M351U/M451U, AR-M355U/M455U  TROUBLE CODES  11 - 11
U2
11
Content
Counter check sum error (ICU)
Detail
Counter data area check sum error
Cause
EEPROM trouble
Control circuit trouble by noise
ICU PWB EEPROM access circuit 
trouble
Check and 
remedy
Check that EEPROM is properly 
inserted. 
Save the counter/adjustment values 
with the  DIAG simulation.
Use DIAG (SIM16) to cancel U2 
trouble.
Replace the ICU PWB.
12
Content
Adjustment value check sum error 
(ICU)
Detail
Adjustment data area check sum error
Cause
EEPROM trouble
Control circuit trouble by noise
ICU PWB EEPROM access circuit 
trouble
Check and 
remedy
Check that EEPROM is properly 
inserted. 
Save the counter/adjustment values 
with the  simulation.
Use SIM16 to cancel U2 trouble.
Replace the ICU PWB.
22
Content
SRAM memory check sum error (ICU)
Detail
MFPC section SRAM memory check 
sum error
Cause
SRAM trouble
Control circuit runaway due to noises
ICU PWB SRAM access circuit trouble
Check and 
remedy
Initialize the communication 
management table registered in the 
SRAM and the FAX soft switch.
Since the registered data are deleted, 
register the data again.
Use SIM16 to cancel U2 trouble.
Replace the ICU PWB.
23
Content
SRAM memory individual data check 
sum error (ICU)
Detail
Check sum error for every data in the 
SRAM memory of the MFPC section
(Communication management table, 
sender registration data, etc.)
Cause
SRAM trouble
Control circuit runaway due to noises
ICU PWB SRAM access circuit trouble
Check and 
remedy
Automatically initialize the data related 
to the check sum error by turning OFF/
ON the power.
Since the registered data are deleted, 
register the data again.
Use SIM16 to cancel U2 trouble.
Replace the ICU PWB.
MAIN SUB
Details
U2
50
Content
HD section individual data check sum 
error (ICU)
Detail
Check sum error for every individual 
data in HD of the MFPC section (One-
touch, Group, Program, etc.)
Cause
HDD write/read error
Control circuit runaway due to noises
ICU PWB HD access circuit trouble
Check and 
remedy
Automatically initialize the data related 
to the check sum error by turning OFF/
ON the power.
Since the registered data are deleted, 
register the data again.
Use SIM 16 to cancel the U2 trouble.
Replace the HD PWB.
Replace the ICU PWB.
80
Content
EEPROM read/write error (Scanner)
Details
Scanner EEPROM write error
Cause
EEPROM abnormality
Scanner PWB EEPROM access circuit 
abnormality
Check & 
Remedy
Check that EEPROM is set properly.
Record counter/adjustment values with 
the simulation to protect the data from 
being deleted.
Cancel U2 trouble with SIM 16.
Replace scanner PWB.
81
Content
Memory check sum error (Scanner)
Details
Scanner memory check sum error
Cause
EEPROM trouble
EEPROM which is not initialized is 
installed.
Control circuit freeze by noises
Scanner PWB EEPROM access circuit 
trouble
Check & 
Remedy
Check that EEPROM is set properly.
Record counter/adjustment values with 
the simulation to protect the data from 
being deleted.
Cancel U2 trouble with SIM 16.
Replace scanner PWB.
90
Content
EEPROM read/write error (PCU)
Detail
PCU EEPROM write error
Cause
EEPROM trouble
PCU PWB EEPROM access circuit 
trouble
Check and 
remedy
Check that EEPROM is properly 
inserted. 
Record counter/adjustment values with 
the simulation to protect the data from 
being deleted.
Use SIM16 to cancel U2 trouble.
Replace the Controller PWB.
91
Content
Memory check sum error (PCU)
Detail
PCU memory check sum error
Cause
EEPROM trouble
EEPROM which is not initialized is 
installed.
EEPROM is not initialized.
PCU PWB EEPROM access circuit 
trouble
Hang of control circuit due to noises
Check and 
remedy
Check that EEPROM is properly 
inserted. 
Save the counter/adjustment values 
with the simulation.
Use SIM16 to cancel U2 trouble.
Replace the Controller PWB.
MAIN SUB
Details
AR-M351U/M451U, AR-M355U/M455U  TROUBLE CODES  11 - 12
U6
00
Content
Desk/LCC communication trouble
Detail
Desk/LCC communication error
Communication cable test error after 
turning on the power or exiting SIM.
Cause
Improper connection or disconnection 
of connector and harness
Desk control PWB trouble
Control PWB (PCU) trouble
Noise or interference
Check and 
remedy
Canceled by turning OFF/ON the 
power. 
Check connection of the harness and 
connector in the communication line.
01
Content
Desk/LCC No. 1 tray lift-up trouble
Detail
Desk/LCC No. 1 tray lift-up trouble
Cause
Sensor trouble
Tray trouble
Defective connection or disconnection 
between the PWB and the motor.
Desk control PWB trouble
Lift-up motor trouble
Check and 
remedy
Use SIM4-2 to check the upper limit 
sensor detection.
Use SIM4-3 to check the lift-up motor 
operation.
02
Content
Desk No. 2 tray/LCC1 lift-up trouble
Detail
Desk No. 2 tray/LCC lift-up trouble
Cause
Sensor trouble
Tray trouble
Defective connection or disconnection 
between the PWB and the motor.
Desk control PWB trouble
Lift-up motor trouble
Check and 
remedy
Use SIM4-2 to check the upper limit 
sensor detection.
Use SIM4-3 to check the lift-up motor 
operation.
03
Content
Desk No. 3 tray/LCC2 lift-up trouble
Detail
Desk no. 3 tray lift-up trouble
Cause
Sensor trouble
Tray trouble
Defective connection or disconnection 
between the PWB and the motor.
Desk control PWB trouble
Lift-up motor trouble
Check and 
remedy
Use SIM4-2 to check the upper limit 
sensor detection.
Use SIM4-3 to check the lift-up motor 
operation.
10
Content
Desk/LCC transport motor trouble
Detail
Desk/LCC transport motor operation 
trouble
Cause
Motor lock
Drive abnormality
Defective connection or disconnection 
between the PWB and the motor.
Motor rpm abnormality
Overcurrent to the motor
Desk control PWB trouble
Check and 
remedy
Use SIM4-3 to check the transport 
motor operation.
MAIN SUB
Details
U7
00
Content
RIC communication trouble
Detail
RIC communication trouble
Communication cable test error after 
turning on the power or exiting SIM.
Cause
Disconnection of connector and 
harness
RTC control PWB trouble
Control PWB (ICU) trouble
Noise or interference
Check and 
remedy
Canceled by turning OFF/ON the 
power.
Check connector and harness in the 
communication line. 
EE
EL
Content
Auto developer adjustment trouble 
(Over-toner)
Detail
The toner concentration output is 
detected as 1.5V or below in the auto 
development adjustment.
Cause
Toner concentration sensor trouble
Charging voltage, developing voltage 
abnormality
Insufficient toner concentration
Developing unit trouble
PCU PWB trouble
Check and 
remedy
Use SIM25-2 to perform auto 
developer adjustment.
EU
Content
Auto developer adjustment trouble 
(Under-toner)
Detail
The toner concentration output is 
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
Check and 
remedy
Use SIM25-2 to perform auto 
developer adjustment.
PF
00
Content
RIC copy inhibit signal is received.
Detail
Copy inhibit command from RIM (host) 
is received. 
Cause
Judged by the host.
Check and 
remedy
Inform to the host.
CE
00
Content
Another communication error occurs.
Detail
Communication error
Cause
Improper connection of the network 
cable
Check and 
remedy
Check the connection of the network 
cable.
01
Content
The print server card is broken down or 
is not installed.
Detail
Print server card connection trouble
Cause
The print server card is not installed on 
the controller.
Print server card control PWB trouble
Check and 
remedy
1. Check that the print server card is 
installed on the controller.
2. Output the NIC Config. Page to 
check the NIC version.
3. Replace the NIC.
MAIN SUB
Details
Page of 16
Display

Click on the first or last page to see other AR-M351U / AR-M451U (serv.man19) service manuals if exist.