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MX-4101N SELF DIAG AND TROUBLE CODE 7 – 14
F1-45
Saddle staple trouble
F1-47
Saddle paper transport motor trouble
F1-50
Main unit - Finisher combination error
F2-22
Discharge lamp trouble (K)
F2-23
Discharge lamp trouble (C)
F2-24
Discharge lamp trouble (M)
F2-25
Discharge lamp trouble (Y)
F2-39
Process thermistor trouble
F2-40
Toner density sensor trouble (BLACK)
Trouble content
Abnormality of the staple unit drive motor in the
saddle section.
saddle section.
Detail
PCU
Cause
Saddle staple motor trouble.
Finisher control PWB trouble.
Home position sensor trouble.
Harness and connector connection trouble.
Finisher control PWB trouble.
Home position sensor trouble.
Harness and connector connection trouble.
Check & Remedy
Use SIM3-3 to check the operation of the saddle
staple motor.
Check connection from the control PWB to the motor.
Turn OFF/ON the power.
Replace the control PWB.
Replace the sensor.
staple motor.
Check connection from the control PWB to the motor.
Turn OFF/ON the power.
Replace the control PWB.
Replace the sensor.
Trouble content
Abnormality in the drive roller oscillation motor in the
finisher saddle transport section.
finisher saddle transport section.
Detail
PCU
Cause
Saddle paper transport motor trouble.
Finisher control PWB trouble.
Harness and connector connection trouble.
Fuse blown (24V line).
Finisher control PWB trouble.
Harness and connector connection trouble.
Fuse blown (24V line).
Check & Remedy
Use SIM3-3 to check the operation of the saddle
paper transport motor.
Check connection from the control PWB to the motor.
Replace the control PWB.
Replace the sensor.
paper transport motor.
Check connection from the control PWB to the motor.
Replace the control PWB.
Replace the sensor.
Trouble content
Detail
PCU
Cause
The finisher which is not supported by the main unit
model is installed.
Finisher control PWB trouble.
model is installed.
Finisher control PWB trouble.
Check & Remedy
Install a proper finisher.
Replace the finisher control PWB.
Replace the finisher control PWB.
Trouble content
A trouble is detected when the discharge lamp open
sensor is open for 1 sec after turning ON the
discharge lamp.
sensor is open for 1 sec after turning ON the
discharge lamp.
Detail
PCU
Cause
Contact trouble between the discharge lamp PWB
(K) and the PCU PWB.
Discharge lamp PWB (K) trouble.
PCU PWB trouble.
(K) and the PCU PWB.
Discharge lamp PWB (K) trouble.
PCU PWB trouble.
Check & Remedy
Replace the discharge lamp PWB (K).
Check the harness and the connector.
Replace the PCU PWB.
Check the harness and the connector.
Replace the PCU PWB.
Trouble content
A trouble is detected when the discharge lamp open
sensor is open for 1 sec after turning ON the
discharge lamp.
sensor is open for 1 sec after turning ON the
discharge lamp.
Detail
PCU
Cause
Contact trouble between the discharge lamp PWB
(C) and the PCU PWB.
Discharge lamp PWB (C) trouble.
PCU PWB trouble.
(C) and the PCU PWB.
Discharge lamp PWB (C) trouble.
PCU PWB trouble.
Check & Remedy
Replace the discharge lamp PWB (C).
Check the harness and the connector.
Replace the PCU PWB.
Check the harness and the connector.
Replace the PCU PWB.
Trouble content
A trouble is detected when the discharge lamp open
sensor is open for 1 sec after turning ON the
discharge lamp.
sensor is open for 1 sec after turning ON the
discharge lamp.
Detail
PCU
Cause
Contact trouble between the discharge lamp PWB
(M) and the PCU PWB.
Discharge lamp PWB (M) trouble.
PCU PWB trouble.
(M) and the PCU PWB.
Discharge lamp PWB (M) trouble.
PCU PWB trouble.
Check & Remedy
Replace the discharge lamp PWB (M).
Check the harness and the connector.
Replace the PCU PWB.
Check the harness and the connector.
Replace the PCU PWB.
Trouble content
A trouble is detected when the discharge lamp open
sensor is open for 1 sec after turning ON the
discharge lamp.
sensor is open for 1 sec after turning ON the
discharge lamp.
Detail
PCU
Cause
Contact trouble between the discharge lamp PWB
(Y) and the PCU PWB.
Discharge lamp PWB (Y) trouble.
PCU PWB trouble.
(Y) and the PCU PWB.
Discharge lamp PWB (Y) trouble.
PCU PWB trouble.
Check & Remedy
Replace the discharge lamp PWB (Y).
Check the harness and the connector.
Replace the PCU PWB.
Check the harness and the connector.
Replace the PCU PWB.
Trouble content
Detail
PCU
Cause
Process thermistor trouble.
Process thermistor harness connection trouble.
PCU PWB trouble
Process thermistor harness connection trouble.
PCU PWB trouble
Check & Remedy
Replace the process thermistor.
Check connection of the harness and the connector.
Replace the PCU PWB.
Check connection of the harness and the connector.
Replace the PCU PWB.
Trouble content
Detail
PCU
Cause
Toner density sensor output abnormality (Sample
level 25 or less, or 231 or above)
Connection trouble of the connector and the
harness.
Developing unit trouble. PCU PWB trouble
level 25 or less, or 231 or above)
Connection trouble of the connector and the
harness.
Developing unit trouble. PCU PWB trouble
Check & Remedy
Replace the toner density sensor.
Check connection of the connector and the harness.
Replace the developing unit.
Replace the PCU PWB.
Check connection of the connector and the harness.
Replace the developing unit.
Replace the PCU PWB.
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