Sharp MX-4100N / MX-4101N / MX-5000N / MX-5001N (serv.man15) Service Manual ▷ View online
MX-4101N SELF DIAG AND TROUBLE CODE 7 – 9
E7-08
MFP memory compatibility error
(MFP PWB)
(MFP PWB)
E7-09
Wrong memory size
(Std./Ext. memory) (MFP PWB)
(Std./Ext. memory) (MFP PWB)
E7-10
Shading error (Black correction)
E7-11
Shading error (White correction)
E7-14
CCD-ASIC error
E7-20
LSU laser detection error (K)
E7-21
LSU laser detection error (C)
E7-22
LSU laser detection error (M)
E7-23
LSU laser detection error (Y)
Trouble content
Detail
MFP
Cause
A DIMM of different specifications is installed to the
MFP memory slot.
DIMM trouble.
MFP memory slot.
DIMM trouble.
Check & Remedy
Check the installed DIMM.
Replace the DIMM.
Replace the DIMM.
Trouble content
Detail
MFP
Cause
A DIMM which is not 512MB is inserted into the
default slot.
DIMM trouble.
Insufficient memory size.
default slot.
DIMM trouble.
Insufficient memory size.
Check & Remedy
Replace the DIMM.
Trouble content
Detail
SCU
Cause
Abnormality in the CCD black scan level when the
scanner lamp is turned OFF.
Improper installation of the harness to the CCD unit.
CCD unit abnormality.
SCU PWB abnormality.
scanner lamp is turned OFF.
Improper installation of the harness to the CCD unit.
CCD unit abnormality.
SCU PWB abnormality.
Check & Remedy
Check connection of the harness to the CCD unit.
Check the CCD unit.
Check the SCU PWB.
Check the CCD unit.
Check the SCU PWB.
Trouble content
Detail
SCU
Cause
Abnormality in the CCD white reference plate scan
level when the scanner lamp is turned ON.
Improper installation of the harness to the CCD unit.
Dirt on the mirror, lens, and the reference white plate.
Scanner lamp lighting trouble.
CCD unit abnormality.
SCU PWB abnormality.
level when the scanner lamp is turned ON.
Improper installation of the harness to the CCD unit.
Dirt on the mirror, lens, and the reference white plate.
Scanner lamp lighting trouble.
CCD unit abnormality.
SCU PWB abnormality.
Check & Remedy
Check connection of the harness to the CCD unit.
Check connection of the harness to the scanner
lamp unit.
Clean the mirror, the lens, and the reference white
plate.
Check the CCD unit.
Check the SCU PWB.
Check connection of the harness to the scanner
lamp unit.
Clean the mirror, the lens, and the reference white
plate.
Check the CCD unit.
Check the SCU PWB.
Trouble content
Detail
SCU
Cause
SCU PWB trouble.
Check & Remedy
Check the SCU PWB.
Replace the SCU PWB.
Replace the SCU PWB.
Trouble content
Detail
PCU
Cause
Optical axis shift.
Reduced laser power, lighting error, laser diode
trouble.
BD PWB trouble.
Harness and connector trouble between the LD/BD
PWB and the LSU cnt PWB.
Reduced laser power, lighting error, laser diode
trouble.
BD PWB trouble.
Harness and connector trouble between the LD/BD
PWB and the LSU cnt PWB.
Check & Remedy
Use SIM61-1 to check the operation of the LSU.
Check the PWB and connection of the harness in the
LSU.
Replace the LSU.
Check the PWB and connection of the harness in the
LSU.
Replace the LSU.
Trouble content
Detail
PCU
Cause
Reduced laser power, lighting error, laser diode
trouble.
Harness and connector trouble between the LD PWB
and the LSU cnt PWB.
trouble.
Harness and connector trouble between the LD PWB
and the LSU cnt PWB.
Check & Remedy
Use SIM61-1 to check the operation of the LSU.
Check the PWB and connection of the harness in the
LSU.
Replace the LSU.
Check the PWB and connection of the harness in the
LSU.
Replace the LSU.
Trouble content
Detail
PCU
Cause
Reduced laser power, lighting error, laser diode
trouble.
Harness and connector trouble between the LD PWB
and the LSU cnt PWB.
trouble.
Harness and connector trouble between the LD PWB
and the LSU cnt PWB.
Check & Remedy
Use SIM61-1 to check the operation of the LSU.
Check the PWB and connection of the harness in the
LSU.
Replace the LSU.
Check the PWB and connection of the harness in the
LSU.
Replace the LSU.
Trouble content
Detail
PCU
Cause
Reduced laser power, lighting error, laser diode
trouble.
Harness and connector trouble between the LD PWB
and the LSU cnt PWB.
trouble.
Harness and connector trouble between the LD PWB
and the LSU cnt PWB.
Check & Remedy
Use SIM61-1 to check the operation of the LSU.
Check the PWB and connection of the harness in the
LSU.
Replace the LSU.
Check the PWB and connection of the harness in the
LSU.
Replace the LSU.
MX-4101N SELF DIAG AND TROUBLE CODE 7 – 10
E7-28
LSU-PCU connection error
E7-29
LSU ASIC frequency error
E7-42
Date error (ACRE ASIC)
E7-46
Decode error (ACRE ASIC)
E7-48
Memory error (ACRE ASIC)
E7-49
Water Mark data error
E7-50
Engine connection trouble
E7-55
PWB information sum error
(Engine detection)
(Engine detection)
E7-60
Combination error between the MFP
PWB and other PWB, firmware
PWB and other PWB, firmware
E7-61
Combination error between the MFP
PWB and the PCU PWB
PWB and the PCU PWB
E7-65
MFP EEPROM sum check error
Trouble content
Detail
PCU
Cause
Communication error between the CPU in the PCU
PWB and the control ASIC.
Improper connection of the communication
connector between the PCU PWB and the LSU cnt
PWB (interface PWB).
Harness trouble between the PCU PWB and the LSU
cnt PWB (interface PWB)
PCU PWB or LSU cnt PWB (interface PWB) trouble
PWB and the control ASIC.
Improper connection of the communication
connector between the PCU PWB and the LSU cnt
PWB (interface PWB).
Harness trouble between the PCU PWB and the LSU
cnt PWB (interface PWB)
PCU PWB or LSU cnt PWB (interface PWB) trouble
Check & Remedy
Check connection of the connector and the harness
between the PCU PWB and the LSU cnt PWB
(interface PWB).
Replace the LSU cnt PWB.
Replace the PCU PWB.
between the PCU PWB and the LSU cnt PWB
(interface PWB).
Replace the LSU cnt PWB.
Replace the PCU PWB.
Trouble content
Detail
PCU
Cause
Oscillation abnormality of the external oscillator and
the internal oscillating circuit used in the LSU ASIC.
LSU ASIC abnormality on the LSU ASIC PWB.
the internal oscillating circuit used in the LSU ASIC.
LSU ASIC abnormality on the LSU ASIC PWB.
Check & Remedy
Replace the LSU cnt PWB.
Trouble content
Detail
MFP
Cause
Image transfer trouble.
Detail
Check the connection state of the ACRE ASIC PWB
connector.
Replace the ACRE ASIC PWB.
connector.
Replace the ACRE ASIC PWB.
Trouble content
Detail
MFP
Cause
Compression data abnormality.
Garbled data are produced in image compression/
transmission.
ACRE ASIC PWB trouble.
Garbled data are produced in image compression/
transmission.
ACRE ASIC PWB trouble.
Check & Remedy
Check the installation state of the PWB.
Check connection of the ACRE ASIC PWB.
Replace the ACRE ASIC PWB.
Check connection of the ACRE ASIC PWB.
Replace the ACRE ASIC PWB.
Trouble content
Detail
MFP
Cause
DIMM trouble, memory slot trouble.
DIMM insertion trouble, different DIMM inserted.
DIMM insertion trouble, different DIMM inserted.
Check & Remedy
DIMM trouble.
Replace the PWB.
Replace the PWB.
Trouble content
Detail
MFP
Cause
Check & Remedy
Trouble content
Detail
PCU
Cause
A PWB, or firmware, or LSU which is not supported
by the machine specifications is detected in the PCU
PWB.
PCU PWB trouble.
LSU trouble.
by the machine specifications is detected in the PCU
PWB.
PCU PWB trouble.
LSU trouble.
Check & Remedy
Check the kind and the version of the firmware.
Check the LSU, and replace it if necessary.
Check the PCU PWB, and replace it if necessary.
Check the LSU, and replace it if necessary.
Check the PCU PWB, and replace it if necessary.
Trouble content
PCU EEPROM PWB information sum error
Detail
PCU
Cause
PCU EEPROM sum check error.
PCU EEPROM trouble.
PCU EEPROM contact trouble.
Malfunction due to noises
PCU EEPROM trouble.
PCU EEPROM contact trouble.
Malfunction due to noises
Check & Remedy
Replace the PCU PWB.
Replace the PCU EEPROM.
Replace the PCU EEPROM.
Trouble content
Detail
MFP
Cause
A PWB or firmware which is not supported by the
machine specifications is detected in the MFP PWB.
MFP PWB trouble.
The PWB/firmware which is not supported by the
machine specifications is connected.
machine specifications is detected in the MFP PWB.
MFP PWB trouble.
The PWB/firmware which is not supported by the
machine specifications is connected.
Check & Remedy
Check the kind and the version of the firmware.
Check the MFP PWB, and replace it if necessary.
Check the MFP PWB, and replace it if necessary.
Trouble content
Detail
MFP
Cause
Combination error between the MFP PWB and the
PCU PWB.
MFP PWB trouble.
PCU PWB trouble.
PCU PWB.
MFP PWB trouble.
PCU PWB trouble.
Check & Remedy
Check the combination between the MFP PWB and
the PCU PWB.
Replace the MFP PWB.
Replace the PCU PWB.
the PCU PWB.
Replace the MFP PWB.
Replace the PCU PWB.
Trouble content
Detail
MFP
Cause
MFP PWB EEPROM device breakdown.
Contact trouble of the MFP EEPROM device.
Malfunction due to noises.
Contact trouble of the MFP EEPROM device.
Malfunction due to noises.
Check & Remedy
Replace the MFP PWB.
Replace the MFP PWB EEPROM.
Replace the MFP PWB EEPROM.
MX-4101N SELF DIAG AND TROUBLE CODE 7 – 11
E7-80
MFP-SCU PWB communication error
E7-90
MFP - PCU PWB communication error
EE-EC
Automatic toner density adjustment
error (Sampling level 76 - 117/
139 - 178)
error (Sampling level 76 - 117/
139 - 178)
EE-EL
Automatic toner density adjustment
error (Overtoner)
error (Overtoner)
EE-EU
Automatic toner density adjustment
error (Undertoner)
error (Undertoner)
F1-00
Finisher - PCU PWB communication
error
error
F1-03
Finisher paper exit roller lifting opera-
tion trouble
tion trouble
F1-08
Stapler shift trouble
Trouble content
Detail
MFP
Cause
SCU PWB connector connection trouble.
SCU PWB - MFP PWB connection trouble.
SCU PWB mother board connection trouble.
SCU PWB trouble.
MFP PWB trouble.
Replace the mother board.
SCU PWB - MFP PWB connection trouble.
SCU PWB mother board connection trouble.
SCU PWB trouble.
MFP PWB trouble.
Replace the mother board.
Check & Remedy
Check connection of the SCU PWB, the MFP PWB,
and the mother board.
Check the earth line.
Replace the SCU PWB.
Replace the MFP PWB.
Replace the mother board.
and the mother board.
Check the earth line.
Replace the SCU PWB.
Replace the MFP PWB.
Replace the mother board.
Trouble content
Detail
MFP
Cause
PCU PWB connector connection trouble.
PCU PWB - MFP PWB connection trouble.
PCU PWB motherboard connection trouble.
PCU PWB trouble.
MFP PWB trouble.
Replace the mother board.
PCU PWB - MFP PWB connection trouble.
PCU PWB motherboard connection trouble.
PCU PWB trouble.
MFP PWB trouble.
Replace the mother board.
Check & Remedy
Check connection of the PCU PWB, the MFP PWB,
and the mother board.
Check the earth line.
Replace the PCU PWB.
Replace the MFP PWB.
Replace the mother board.
and the mother board.
Check the earth line.
Replace the PCU PWB.
Replace the MFP PWB.
Replace the mother board.
Trouble content
The sampling level in the automatic toner density
adjustment is outside of 128
adjustment is outside of 128
±10.
Detail
PCU
Cause
Toner density sensor trouble.
Developing unit trouble.
PCU PWB trouble.
Developing unit trouble.
PCU PWB trouble.
Check & Remedy
Replace the toner density sensor.
Replace the developing unit.
Replace the PCU PWB.
Replace the developing unit.
Replace the PCU PWB.
Trouble content
The sampling level in the automatic toner density
adjustment is 76 or less or the control voltage is 208
or above.
adjustment is 76 or less or the control voltage is 208
or above.
Detail
PCU
Cause
Toner density sensor trouble.
Charging voltage/ developing voltage trouble, toner
density trouble, or developing unit trouble.
PCU PWB trouble.
Charging voltage/ developing voltage trouble, toner
density trouble, or developing unit trouble.
PCU PWB trouble.
Check & Remedy
Replace the toner density sensor.
Replace the developing unit.
Replace the PCU PWB.
Replace the developing unit.
Replace the PCU PWB.
Trouble content
The sampling level in the automatic toner density
adjustment is 178 or above or the control voltage is
51 or less.
adjustment is 178 or above or the control voltage is
51 or less.
Detail
PCU
Cause
Toner density sensor trouble.
Charging voltage/ developing voltage trouble, toner
density trouble, or developing unit trouble.
PCU PWB trouble.
Charging voltage/ developing voltage trouble, toner
density trouble, or developing unit trouble.
PCU PWB trouble.
Check & Remedy
Replace the toner density sensor.
Replace the developing unit.
Replace the PCU PWB.
Replace the developing unit.
Replace the PCU PWB.
Trouble content
Detail
PCU
Cause
Connection trouble of the connector and the harness
between the finisher and the PCU PWB.
Finisher control PWB trouble.
PCU PWB trouble.
Strong external noises.
between the finisher and the PCU PWB.
Finisher control PWB trouble.
PCU PWB trouble.
Strong external noises.
Check & Remedy
Check the connector and the harness between the
finisher and the PCU PWB.
Replace the finisher control PWB.
Replace the PCU PWB.
finisher and the PCU PWB.
Replace the finisher control PWB.
Replace the PCU PWB.
Trouble content
Detail
PCU
Cause
Finisher paper exit roller lift motor trouble.
Harness and connector connection trouble.
Home position sensor trouble.
Finisher control PWB trouble.
Harness and connector connection trouble.
Home position sensor trouble.
Finisher control PWB trouble.
Check & Remedy
Use SIM3-3 to check the operation of the paper exit
roller lift motor.
Replace the paper exit roller lift motor.
Check connection of the connector and the harness.
Replace the home position sensor.
Replace the finisher control PWB.
roller lift motor.
Replace the paper exit roller lift motor.
Check connection of the connector and the harness.
Replace the home position sensor.
Replace the finisher control PWB.
Trouble content
Detail
PCU
Cause
Stapler shift motor trouble.
Finisher control PWB trouble.
Home position sensor trouble.
Finisher control PWB trouble.
Home position sensor trouble.
Check & Remedy
Use SIM3-3 to check the operation of the stapler shift
motor.
Replace the stapler shift motor.
Check connection of the connector and the harness.
Replace the home position sensor.
Replace the finisher control PWB.
motor.
Replace the stapler shift motor.
Check connection of the connector and the harness.
Replace the home position sensor.
Replace the finisher control PWB.
MX-4101N SELF DIAG AND TROUBLE CODE 7 – 12
F1-10
Staple operation trouble
F1-11
Finisher grip operation trouble
F1-15
Finisher paper exit tray lift operation
trouble
trouble
F1-19
Finisher alignment operation trouble F
F1-20
Finisher alignment operation trouble
R
R
F1-21
Finisher fan trouble
F1-22
Finisher assist motor trouble
F1-23
Finisher shutter trouble
F1-31
Saddle paper folding trouble
Trouble content
Detail
PCU
Cause
Staple motor trouble.
Finisher control PWB trouble.
Home position sensor trouble.
Finisher control PWB trouble.
Home position sensor trouble.
Check & Remedy
Use SIM3-3 to check the operation of the staple
motor.
Replace the staple motor.
Check connection of the connector and the harness.
Replace the home position sensor.
Replace the finisher control PWB.
motor.
Replace the staple motor.
Check connection of the connector and the harness.
Replace the home position sensor.
Replace the finisher control PWB.
Trouble content
Detail
PCU
Cause
Grip motor trouble.
Finisher control PWB trouble.
Grip arm trouble.
Home position sensor trouble.
Finisher control PWB trouble.
Grip arm trouble.
Home position sensor trouble.
Check & Remedy
Use SIM3-3 to check the operation of the grip motor.
Replace the grip motor.
Replace the finisher control PWB.
Replace the grip arm.
Replace the home position sensor.
Replace the grip motor.
Replace the finisher control PWB.
Replace the grip arm.
Replace the home position sensor.
Trouble content
Lift motor trouble.
Detail
PCU
Cause
Paper exit tray lift motor trouble.
Finisher control PWB trouble.
Finisher control PWB trouble.
Check & Remedy
Use SIM3-3 to check the operation of the paper exit
tray lift motor.
Replace the finisher control PWB.
Replace the paper exit tray lift motor.
tray lift motor.
Replace the finisher control PWB.
Replace the paper exit tray lift motor.
Trouble content
Detail
PCU
Cause
Finisher paper alignment motor lock.
Motor speed abnormality.
Overcurrent to the motor.
Finisher control PWB trouble.
Motor speed abnormality.
Overcurrent to the motor.
Finisher control PWB trouble.
Check & Remedy
Use SIM3-3 to check the operation of the paper
alignment motor F.
Replace the finisher control PWB.
Replace the paper alignment motor F.
alignment motor F.
Replace the finisher control PWB.
Replace the paper alignment motor F.
Trouble content
Detail
PCU
Cause
Finisher paper alignment motor lock.
Motor speed abnormality.
Overcurrent to the motor.
Finisher control PWB trouble.
Motor speed abnormality.
Overcurrent to the motor.
Finisher control PWB trouble.
Check & Remedy
Use SIM3-3 to check the operation of the paper
alignment motor R.
Replace the finisher control PWB.
Replace the paper alignment motor R.
alignment motor R.
Replace the finisher control PWB.
Replace the paper alignment motor R.
Trouble content
Detail
PCU
Cause
Finisher fan motor trouble.
Finisher control PWB trouble.
Harness and connector connection trouble.
Finisher control PWB trouble.
Harness and connector connection trouble.
Check & Remedy
Use SIM3-3 to check the operation of the fan motor.
Check connection between the finisher control PWB
and the fan.
Replace the fan.
Replace the finisher control PWB.
Check connection between the finisher control PWB
and the fan.
Replace the fan.
Replace the finisher control PWB.
Trouble content
Detail
PCU
Cause
Motor harness short/open trouble.
Control PWB trouble.
Connection harness/connector connection trouble
Control PWB trouble.
Connection harness/connector connection trouble
Check & Remedy
Check the operation of the rear edge assist motor
with SIM3-3.
Check connection from the control PWB to the
motor.
Replace the control PWB.
with SIM3-3.
Check connection from the control PWB to the
motor.
Replace the control PWB.
Trouble content
Detail
PCU
Cause
Motor lock trouble.
Control PWB trouble, home position sensor trouble.
Connection harness/connector connection trouble.
Control PWB trouble, home position sensor trouble.
Connection harness/connector connection trouble.
Check & Remedy
Check the operation of the rear edge assist motor
with SIM3-3.
Check connection from the control PWB to the
motor.
Replace the control PWB.
with SIM3-3.
Check connection from the control PWB to the
motor.
Replace the control PWB.
Trouble content
Detail
PCU
Cause
Motor lock trouble.
Control PWB trouble, home position sensor trouble.
Connection harness/connector connection trouble.
Control PWB trouble, home position sensor trouble.
Connection harness/connector connection trouble.
Check & Remedy
Check the operation of the saddle motor with SIM3-
3.
Check connection from the control PWB to the motor.
Replace the control PWB.
Replace the sensor.
3.
Check connection from the control PWB to the motor.
Replace the control PWB.
Replace the sensor.
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