4. Troubleshooting
► Error Code
A3–3111
A3–3112
A3–3113
A3–3114
► Error message
Sensor Failure: #A3-3111. Turn off then on. Call for service if the problem persists.
Sensor Failure: #A3-3112. Turn off then on. Call for service if the problem persists.
Sensor Failure: #A3-3113. Turn off then on. Call for service if the problem persists.
Sensor Failure: #A3-3114. Turn off then on. Call for service if the problem persists.
► Symptom
The NC sensor in the fuser unit is defective. / The sensor signal is abnormal due to a defective harness.
► Troubleshooting method
•
A3–3111 : Center NC sensor is in short status.
•
A3–3112 : Center NC sensor is in open status.
•
A3–3113 : Side NC sensor is in short status.
•
A3–3114 : Side NC sensor is in open status.
1) Enter SVC mode. Execute sensor test to check the sensor operation.
(
Diagnostics > Engine Diagnostics > Engine Test Routines
)
•
109-0000 : Fuser Temperature A
•
109-0010 : Fuser Temperature B
2) Remove the fuser unit and disassemble the NC thermistor.
3) Measure the resistance value of the thermistor.
•
Side :
1404–001718
•
Center :
1404–001719
If the measured value is out of 307KΩ~430KΩ @25
℃
, replace the thermistor.
4) Install the fuser unit after replacing the thermistor.
5) If the thermistor is normal, replace the harness between the fuser unit and main board. (
JC39–01746A
)
4-109
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