Sharp MX-5500N / MX-6200N / MX-7000N (serv.man47) Service Manual ▷ View online
MX-7000N SELF DIAG AND TROUBLE CODE 8 – 17
F1-62
Inserter reverse sensor trouble
F2-02
Toner supply abnormality (K2)
F2-04
Toner cartridge improper (K2)
F2-05
Toner cartridge CRUM error (K2)
F2-39
Process thermistor trouble
F2-40
Toner empty sensor abnormality (K)
F2-41
Toner empty sensor abnormality (C)
F2-42
Toner empty sensor abnormality (M)
Trouble content
Sensor adjustment failure
Section
PCU
Case 1
Cause
Sensor trouble, harness disconnection, finisher
control PWB trouble, inserter control PWB trouble
control PWB trouble, inserter control PWB trouble
Check and
remedy
remedy
Use SIM3-2 to check the operation of the inlet port
cover open/close sensor and the paper exit cover
open/close sensor.
Replace the finisher control PWB.
Replace the inserter control PWB.
cover open/close sensor and the paper exit cover
open/close sensor.
Replace the finisher control PWB.
Replace the inserter control PWB.
Trouble content
Toner end with the remaining quantity of 25% or
more.
The toner supply time exceeds 5 times as much as
the specified time.
more.
The toner supply time exceeds 5 times as much as
the specified time.
Section
PCU
Case 1
Cause
Toner motor section connector harness trouble
Check and
remedy
remedy
Check the connector connection of the toner motor
section.
Check the connector harness (TM) connection to
the main PWB.
section.
Check the connector harness (TM) connection to
the main PWB.
Case 2
Cause
Toner motor and toner density sensor trouble.
Piezoelectric sensor abnormality
Piezoelectric sensor abnormality
Check and
remedy
remedy
1)
Check the toner density sensor output.
(SIM25-1)
(SIM25-1)
2)
Check that the toner transport pipe is not
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary. Intermediate hopper
replacement
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary. Intermediate hopper
replacement
3)
If replacement of the toner cartridge (CRUM)
does not clear the trouble, check the
developing unit.
does not clear the trouble, check the
developing unit.
Trouble content
Improper data are detected in the CRUM contents
when the normal CRUM of the cartridge is
detected.
when the normal CRUM of the cartridge is
detected.
Section
PCU
Case 1
Cause
An improper cartridge is inserted.
Toner cartridge trouble
Toner cartridge trouble
Check and
remedy
remedy
Replace the toner cartridge.
Trouble content
CRUM cannot be read or written.
Section
PCU
Case 1
Cause
Connection trouble or disconnection of the
connector and the harness between the PCU and
the toner cartridge.
connector and the harness between the PCU and
the toner cartridge.
Check and
remedy
remedy
Check the connector and the harness between the
PCU and the toner cartridge.
PCU and the toner cartridge.
Case 2
Cause
CRUM trouble
Check and
remedy
remedy
Replace the toner cartridge.
Case 3
Cause
PCU PWB trouble
Check and
remedy
remedy
Replace the PCU PWB.
Trouble content
Process thermistor open
Section
PCU
Case 1
Cause
Process thermistor harness connection trouble
Check and
remedy
remedy
Check the connection of the harness and
connector of the process thermistor.
connector of the process thermistor.
Case 2
Cause
Process thermistor trouble
Check and
remedy
remedy
Check the connection of the harness and
connector of the process thermistor.
connector of the process thermistor.
Case 3
Cause
PCU PWB trouble
Check and
remedy
remedy
Check the PCU PWB.
Trouble content
Toner empty sensor output abnormality. Sample
level 25 or less or 231 or above.
level 25 or less or 231 or above.
Section
PCU
Case 1
Cause
The connector is not installed.
Check and
remedy
remedy
Check the connection of the connector harness to
the PCU PWB. Check the connection of the toner
empty sensor.
the PCU PWB. Check the connection of the toner
empty sensor.
Case 2
Cause
Connector harness trouble
Check and
remedy
remedy
Check the harness disconnection.
Case 3
Cause
Cartridge trouble
Check and
remedy
remedy
Check the cartridge connection.
Trouble content
Toner empty sensor output abnormality. Sample
level 25 or less or 231 or above.
level 25 or less or 231 or above.
Section
PCU
Case 1
Cause
The connector is not installed.
Check and
remedy
remedy
Check the connection of the connector harness to
the PCU PWB. Check the connection of the toner
empty sensor.
the PCU PWB. Check the connection of the toner
empty sensor.
Case 2
Cause
Connector harness trouble
Check and
remedy
remedy
Check the harness disconnection.
Case 3
Cause
Cartridge trouble
Check and
remedy
remedy
Check the cartridge connection.
Trouble content
Toner empty sensor output abnormality. Sample
level 25 or less or 231 or above.
level 25 or less or 231 or above.
Section
PCU
Case 1
Cause
The connector is not installed.
Check and
remedy
remedy
Check the connection of the connector harness to
the PCU PWB. Check the connection of the toner
empty sensor.
the PCU PWB. Check the connection of the toner
empty sensor.
Case 2
Cause
Connector harness trouble
Check and
remedy
remedy
Check the harness disconnection.
Case 3
Cause
Cartridge trouble
Check and
remedy
remedy
Check the cartridge connection.
MX-7000N SELF DIAG AND TROUBLE CODE 8 – 18
F2-43
Toner empty sensor abnormality (Y)
F2-44
Black exclusive image density sensor
trouble (Transfer belt surface
reflection ratio abnormality)
trouble (Transfer belt surface
reflection ratio abnormality)
F2-45
Color exclusive image density sensor
trouble (Calibration plate surface
reflection ratio abnormality)
trouble (Calibration plate surface
reflection ratio abnormality)
F2-49
LSU thermistor trouble
F2-50
K phase sensor sensing trouble
F2-51
CL phase sensor sensing trouble (C)
Trouble content
Toner empty sensor output abnormality. Sample
level 25 or less or 231 or above.
level 25 or less or 231 or above.
Section
PCU
Case 1
Cause
The connector is not installed.
Check and
remedy
remedy
Check the connection of the connector harness to
the PCU PWB. Check the connection of the toner
empty sensor.
the PCU PWB. Check the connection of the toner
empty sensor.
Case 2
Cause
Connector harness trouble
Check and
remedy
remedy
Check the harness disconnection.
Case 3
Cause
Cartridge trouble
Check and
remedy
remedy
Check the cartridge connection.
Trouble content
The transfer belt surface is scanned by the image
density sensor before starting the process control,
and adjust the sensor gain so that the output is
kept at a certain level. However, the output is not
within the specified range though the senor gain is
adjusted.
density sensor before starting the process control,
and adjust the sensor gain so that the output is
kept at a certain level. However, the output is not
within the specified range though the senor gain is
adjusted.
Section
PCU
Case 1
Cause
Image density sensor trouble, harness connection
trouble between PCU PWB and the image density
sensor, image density sensor dirt, transfer belt
cleaning trouble, calibration plate solenoid
operation trouble
trouble between PCU PWB and the image density
sensor, image density sensor dirt, transfer belt
cleaning trouble, calibration plate solenoid
operation trouble
Check and
remedy
remedy
Use SIM44-2 to execute the process control
sensor gain adjustment. If "ERROR" is displayed,
check the sensor, the harness and the calibration
plate solenoid operation for any trouble. If the
adjustment is completed, check the transfer belt
surface state.
sensor gain adjustment. If "ERROR" is displayed,
check the sensor, the harness and the calibration
plate solenoid operation for any trouble. If the
adjustment is completed, check the transfer belt
surface state.
Trouble content
The calibration plate surface is scanned by the
image density sensor before starting the process
control, and adjust the sensor gain so that the
output is kept at a certain level. However, the
output is not within the certain level though the
senor gain is adjusted.
image density sensor before starting the process
control, and adjust the sensor gain so that the
output is kept at a certain level. However, the
output is not within the certain level though the
senor gain is adjusted.
Section
PCU
Case 1
Cause
Image density sensor trouble, harness connection
trouble between PCU PWB and the image density
sensor, image density sensor dirt, calibration plate
dirt, calibration plate solenoid operation trouble
trouble between PCU PWB and the image density
sensor, image density sensor dirt, calibration plate
dirt, calibration plate solenoid operation trouble
Check and
remedy
remedy
Use SIM44-2 to execute the process control
sensor gain adjustment. If "ERROR" is displayed,
check the sensor and the harness operation for
any trouble. If the adjustment is completed, check
the calibration plate solenoid operation.
sensor gain adjustment. If "ERROR" is displayed,
check the sensor and the harness operation for
any trouble. If the adjustment is completed, check
the calibration plate solenoid operation.
Trouble content
The detection temperature is out of the range of
-28
-28
°C to 78°C.
Section
PCU
Case 1
Cause
LSU thermistor harness connection trouble
Check and
remedy
remedy
Check the connection of the LSU thermistor
harness and connector.
harness and connector.
Case 2
Cause
LSU thermistor trouble, PCU PWB trouble
Check and
remedy
remedy
Replace the LSU thermistor. Replace the PCU
PWB.
PWB.
Trouble content
Detection is made by interruption of light in the
sensor section of the projection rib on the drum
drive gear to control the BK drum phase. The
detection signal cannot be acquired and phase
control cannot be made.
sensor section of the projection rib on the drum
drive gear to control the BK drum phase. The
detection signal cannot be acquired and phase
control cannot be made.
Section
PCU
Case 1
Cause
Sensor connector connection trouble
Check and
remedy
remedy
Check the sensor connector connection.
Case 2
Cause
Dirt on the sensor light emitting section, or
installation trouble
installation trouble
Check and
remedy
remedy
Check for dirt on the sensor or check the
installation state.
installation state.
Case 3
Cause
Drum drive gear upper rib breakage, sensor
trouble
trouble
Check and
remedy
remedy
If there is no trouble in the rib, replace the sensor.
(Use SIM30-1 "DHPD_K" to check interruption or
transmission of light.)
(Use SIM30-1 "DHPD_K" to check interruption or
transmission of light.)
Trouble content
Detection is made by interruption of light in the
sensor section of the projection rib on the drum
drive gear to control the color drum (C) phase. The
detection signal cannot be acquired and phase
control cannot be made.
sensor section of the projection rib on the drum
drive gear to control the color drum (C) phase. The
detection signal cannot be acquired and phase
control cannot be made.
Section
PCU
Case 1
Cause
Sensor connector connection trouble
Check and
remedy
remedy
Check the sensor connector connection.
Case 2
Cause
Dirt on the sensor light emitting section, or
installation trouble
installation trouble
Check and
remedy
remedy
Check for dirt on the sensor or check the
installation state.
installation state.
Case 3
Cause
Drum drive gear upper rib breakage, sensor
trouble
trouble
Check and
remedy
remedy
If there is no trouble in the rib, replace the sensor.
(Use SIM30-1 "DHPD_C" to check interruption or
transmission of light.)
(Use SIM30-1 "DHPD_C" to check interruption or
transmission of light.)
MX-7000N SELF DIAG AND TROUBLE CODE 8 – 19
F2-52
CL phase sensor sensing trouble (M)
F2-53
CL phase sensor sensing trouble (Y)
F2-58
Process humidity sensor trouble
F2-64
Toner supply abnormality (K)
F2-65
Toner supply abnormality (C)
F2-66
Toner supply abnormality (M)
Trouble content
Detection is made by interruption of light in the
sensor section of the projection rib on the drum
drive gear to control the color drum (M) phase. The
detection signal cannot be acquired and phase
control cannot be made.
sensor section of the projection rib on the drum
drive gear to control the color drum (M) phase. The
detection signal cannot be acquired and phase
control cannot be made.
Section
PCU
Case 1
Cause
Sensor connector connection trouble
Check and
remedy
remedy
Check the sensor connector connection.
Case 2
Cause
Dirt on the sensor light emitting section, or
installation trouble
installation trouble
Check and
remedy
remedy
Check for dirt on the sensor or check the
installation state.
installation state.
Case 3
Cause
Drum drive gear upper rib breakage, sensor
trouble
trouble
Check and
remedy
remedy
If there is no trouble in the rib, replace the sensor.
(Use SIM30-1 "DHPD_M" to check interruption or
transmission of light.)
(Use SIM30-1 "DHPD_M" to check interruption or
transmission of light.)
Trouble content
Detection is made by interruption of light in the
sensor section of the projection rib on the drum
drive gear to control the color drum (Y) phase. The
detection signal cannot be acquired and phase
control cannot be made.
sensor section of the projection rib on the drum
drive gear to control the color drum (Y) phase. The
detection signal cannot be acquired and phase
control cannot be made.
Section
PCU
Case 1
Cause
Sensor connector connection trouble
Check and
remedy
remedy
Check the sensor connector connection.
Case 2
Cause
Dirt on the sensor light emitting section, or
installation trouble
installation trouble
Check and
remedy
remedy
Check for dirt on the sensor or check the
installation state.
installation state.
Case 3
Cause
Drum drive gear upper rib breakage, sensor
trouble
trouble
Check and
remedy
remedy
If there is no trouble in the rib, replace the sensor.
(Use SIM30-1 "DHPD_Y" to check interruption or
transmission of light.)
(Use SIM30-1 "DHPD_Y" to check interruption or
transmission of light.)
Trouble content
Process humidity sensor open
Section
PCU
Case 1
Cause
Process humidity sensor harness connection
trouble
trouble
Check and
remedy
remedy
Check the harness and connector connection of
the process humidity sensor.
the process humidity sensor.
Case 2
Cause
Process humidity sensor trouble
Check and
remedy
remedy
Check the process humidity sensor.
Case 3
Cause
PCU PWB trouble
Check and
remedy
remedy
Check the PCU PWB.
Trouble content
Toner end with the remaining quantity of 25% or
more.
The toner supply time exceeds 5 times as much as
the specified time.
more.
The toner supply time exceeds 5 times as much as
the specified time.
Section
PCU
Case 1
Cause
Toner motor section connector harness trouble
Check and
remedy
remedy
Check the connector connection of the toner motor
section.
Check the connector harness (TM) connection to
the main PWB.
section.
Check the connector harness (TM) connection to
the main PWB.
Case 2
Cause
Toner motor and toner density sensor trouble.
Piezoelectric sensor abnormality
Piezoelectric sensor abnormality
Check and
remedy
remedy
1)
Check the toner density sensor output.
(SIM25-1)
(SIM25-1)
2)
Check that the toner transport pipe is not
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary. Intermediate hopper
replacement
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary. Intermediate hopper
replacement
3)
If replacement of the toner cartridge (CRUM)
does not clear the trouble, check the
developing unit.
does not clear the trouble, check the
developing unit.
Trouble content
Toner end with the remaining quantity of 75% or
more.
The toner supply time exceeds 3 times as much as
the specified time.
more.
The toner supply time exceeds 3 times as much as
the specified time.
Section
PCU
Case 1
Cause
Toner motor section connector harness trouble
Check and
remedy
remedy
Check the connector connection of the toner motor
section.
Check the connector harness (TM) connection to
the main PWB.
section.
Check the connector harness (TM) connection to
the main PWB.
Case 2
Cause
Toner motor and toner density sensor trouble
Check and
remedy
remedy
1)
Check the toner density sensor output.
(SIM25-1)
(SIM25-1)
2)
Check that the toner transport pipe is not
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary.
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary.
3)
If replacement of the toner cartridge (CRUM)
does not clear the trouble, check the
developing unit.
does not clear the trouble, check the
developing unit.
Trouble content
Toner end with the remaining quantity of 75% or
more.
The toner supply time exceeds 3 times as much as
the specified time.
more.
The toner supply time exceeds 3 times as much as
the specified time.
Section
PCU
Case 1
Cause
Toner motor section connector harness trouble
Check and
remedy
remedy
Check the connector connection of the toner motor
section.
Check the connector harness (TM) connection to
the main PWB.
section.
Check the connector harness (TM) connection to
the main PWB.
Case 2
Cause
Toner motor and toner density sensor trouble
Check and
remedy
remedy
1)
Check the toner density sensor output.
(SIM25-1)
(SIM25-1)
2)
Check that the toner transport pipe is not
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary.
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary.
3)
If replacement of the toner cartridge (CRUM)
does not clear the trouble, check the
developing unit.
does not clear the trouble, check the
developing unit.
MX-7000N SELF DIAG AND TROUBLE CODE 8 – 20
F2-67
Toner supply abnormality (Y)
F2-70
Toner cartridge improper (K)
F2-71
Toner cartridge improper (C)
F2-72
Toner cartridge improper (M)
F2-73
Toner cartridge improper (Y)
F2-74
Toner cartridge CRUM error (K)
F2-75
Toner cartridge CRUM error (C)
F2-76
Toner cartridge CRUM error (M)
F2-77
Toner cartridge CRUM error (Y)
Trouble content
Toner end with the remaining quantity of 75% or
more.
The toner supply time exceeds 3 times as much as
the specified time.
more.
The toner supply time exceeds 3 times as much as
the specified time.
Section
PCU
Case 1
Cause
Toner motor section connector harness trouble
Check and
remedy
remedy
Check the connector connection of the toner motor
section.
Check the connector harness (TM) connection to
the main PWB.
section.
Check the connector harness (TM) connection to
the main PWB.
Case 2
Cause
Toner motor and toner density sensor trouble
Check and
remedy
remedy
1)
Check the toner density sensor output.
(SIM25-1)
(SIM25-1)
2)
Check that the toner transport pipe is not
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary.
clogged between the toner cartridge and the
developing unit. Replace the toner cartridge
(CRUM) if necessary.
3)
If replacement of the toner cartridge (CRUM)
does not clear the trouble, check the
developing unit.
does not clear the trouble, check the
developing unit.
Trouble content
Improper data are detected in the CRUM contents
when the normal CRUM of the cartridge is
detected.
when the normal CRUM of the cartridge is
detected.
Section
PCU
Case 1
Cause
An improper cartridge is inserted.
Toner cartridge trouble
Toner cartridge trouble
Check and
remedy
remedy
Replace the toner cartridge.
Trouble content
Improper data are detected in the CRUM contents
when the normal CRUM of the cartridge is
detected.
when the normal CRUM of the cartridge is
detected.
Section
PCU
Case 1
Cause
An improper cartridge is inserted.
Toner cartridge trouble
Toner cartridge trouble
Check and
remedy
remedy
Replace the toner cartridge.
Trouble content
Improper data are detected in the CRUM contents
when the normal CRUM of the cartridge is
detected.
when the normal CRUM of the cartridge is
detected.
Section
PCU
Case 1
Cause
An improper cartridge is inserted.
Toner cartridge trouble
Toner cartridge trouble
Check and
remedy
remedy
Replace the toner cartridge.
Trouble content
Improper data are detected in the CRUM contents
when the normal CRUM of the cartridge is
detected.
when the normal CRUM of the cartridge is
detected.
Section
PCU
Case 1
Cause
An improper cartridge is inserted.
Toner cartridge trouble
Toner cartridge trouble
Check and
remedy
remedy
Replace the toner cartridge.
Trouble content
CRUM cannot be read or written.
Section
PCU
Case 1
Cause
Connection trouble or disconnection of the
connector and the harness between the PCU and
the toner cartridge.
connector and the harness between the PCU and
the toner cartridge.
Check and
remedy
remedy
Check the connector and the harness between the
PCU and the toner cartridge.
PCU and the toner cartridge.
Case 2
Cause
CRUM trouble
Check and
remedy
remedy
Replace the toner cartridge.
Case 3
Cause
Control (PCU) PWB trouble
Check and
remedy
remedy
Replace the PCU PWB.
Trouble content
CRUM cannot be read or written.
Section
PCU
Case 1
Cause
Connection trouble or disconnection of the
connector and the harness between the PCU and
the toner cartridge.
connector and the harness between the PCU and
the toner cartridge.
Check and
remedy
remedy
Check the connector and the harness between the
PCU and the toner cartridge.
PCU and the toner cartridge.
Case 2
Cause
CRUM trouble
Check and
remedy
remedy
Replace the toner cartridge.
Case 3
Cause
Control (PCU) PWB trouble
Check and
remedy
remedy
Replace the PCU PWB.
Trouble content
CRUM cannot be read or written.
Section
PCU
Case 1
Cause
Connection trouble or disconnection of the
connector and the harness between the PCU and
the toner cartridge.
connector and the harness between the PCU and
the toner cartridge.
Check and
remedy
remedy
Check the connector and the harness between the
PCU and the toner cartridge.
PCU and the toner cartridge.
Case 2
Cause
CRUM trouble
Check and
remedy
remedy
Replace the toner cartridge.
Case 3
Cause
Control (PCU) PWB trouble
Check and
remedy
remedy
Replace the PCU PWB.
Trouble content
CRUM cannot be read or written.
Section
PCU
Case 1
Cause
Connection trouble or disconnection of the
connector and the harness between the PCU and
the toner cartridge.
connector and the harness between the PCU and
the toner cartridge.
Check and
remedy
remedy
Check the connector and the harness between the
PCU and the toner cartridge.
PCU and the toner cartridge.
Case 2
Cause
CRUM trouble
Check and
remedy
remedy
Replace the toner cartridge.
Case 3
Cause
Control (PCU) PWB trouble
Check and
remedy
remedy
Replace the PCU PWB.
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