• Code: A3-3113, A3-3114
• Display: Sensor Failure: #. Turn off then on. Call for service if the problem persists.
• Description: The NC sensor in the fuser unit is defective. / The sensor signal is abnormal due to a defective harness.
• Remedy: . 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 307KOm - 430KOm at 25C, 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) 6) If the error persists, replace the fuser unit(JC91-01121A(220V) / JC91-01120A(110V)). 7) If the error persists after replacing fuser unit, replace the main board(JC92-02516A).

• Code: A3-3210, A3-3211, A3-3212
• Display: Sensor Failure: #. Turn off then on. Call for service if the problem persists
• Description: Inner temperature sensor is defective.
• Remedy: • A3-3210 : Inner temperature sensor value is abnormal. • A3-3211 : Inner temperature sensor is in short status. • A3-3212 : Inner temperature sensor is in open status. 1) Remove the rear cover after removing 7 screws. 2) Check if the inner temperature sensor harness is connected correctly. 3) Remove the harness. Measure the resistance value of the connector at both ends. (C36_16, CN36_17) . If the values is not in 10KOm +- 1% (at 25C), replace the photo sensor (1404-001417). 4) If the sensor is normal, replace the main board(JC92.02516A).

• Code: A3-3310, A3-3311, A3-3312
• Display: Sensor Failure: #A3-3310. Turn off then on. Call for service if the problem persists. Actuator Fan Failure #: Turn off then on.
• Description: Outer temperature/humidity sensor is defective.
• Remedy: • A3-3310 / A3-3311 / A3-3312 : Temperature function is abnormal. • A3-3410 / A3-3411 / A3-3412 : Humidity function is abnormal. 1) Remove the Cover-Left Top[A]. Remove 8 screws. And remove the left cover. 2) Check the temp sensor harness connection. 3) Disconnect the harness. Measure the resistance value of the connector at both ends. If the value is not in 47.5KOm 52.5KOm (at 25C), replace the sensor(JC93-00486A). 4) Remove the rear cover after removing 7 screws. 5) Measure the resistance value of two connectors(CN37_12 / CN37_13) at both ends. 6) If the value is not in 47.5Kom - 52.5KOm (at 25C), replace the harness(JC39-01733A). 7) If the harness and sensor are normal, replace the main board(JC92.02516A)

• Code: A3-3410, A3-3411, A3-3412
• Display: Sensor Failure: #A3-3310. Turn off then on. Call for service if the problem persists. Actuator Fan Failure #: Turn off then on.
• Description: Outer temperature/humidity sensor is defective.
• Remedy: • A3-3310 / A3-3311 / A3-3312 : Temperature function is abnormal. • A3-3410 / A3-3411 / A3-3412 : Humidity function is abnormal. 1) Remove the Cover-Left Top[A]. Remove 8 screws. And remove the left cover. 2) Check the temp sensor harness connection. 3) Disconnect the harness. Measure the resistance value of the connector at both ends. If the value is not in 47.5KOm 52.5KOm (at 25C), replace the sensor(JC93-00486A). 4) Remove the rear cover after removing 7 screws. 5) Measure the resistance value of two connectors(CN37_12 / CN37_13) at both ends. 6) If the value is not in 47.5Kom - 52.5KOm (at 25C), replace the harness(JC39-01733A). 7) If the harness and sensor are normal, replace the main board(JC92.02516A)

• Code: A3-4114
• Display: The ACR sensor is dirty. Please clean it with soft cloth or paper(A3-4114)
• Description: ACR(CTD) sensor is defective or ACR(CTD) sensor calibration is abnormal.
• Remedy: 1) Open the side cover. 2) Open the ACR module. 3) Move the shutter to the right manually. 4) Close the side cover. 5) Check if the CTD sensor window is contaminated. If yes, clean the window with soft cloth. 6) If the problem persists, replace the CTD sensor(JC32-00012A and JC32-00014A).

• Code: A4-1117, A4-1118
• Display: Lamp Failure: #. Open the door, then close it. Call for service if the problem persists.
• Description: Eraser Lamp is off.
• Remedy: 1) Open the front cover and side cover. Remove the waste toner container and imaging units. 2) Enter SVC mode. Execute Lamp test. (Diagnostics > Engine Diagnostics > Engine Test Routines) • 107-0160 : Erase Lamp1 • 107-0161 : Erase Lamp2 3) Check if the Lamp is on. Remove the rear cover after removing 7 screws. 4) Check the erase Lamp harness connection. (JC39-01733A / JC39-01734A) 5) If the Lamp Assy or harness is defective, replace it. (Harness : JC39-01733A / Erase Lamp Assy : JC98-01979A) 6) If the Lamp Assy and harness are normal, replace the main board(JC92-02516A)

• Code: C1-2110
• Display: Prepare new yellow toner cartridge.
• Description: Yellow toner is almost empty.
• Remedy: 1) Order new yellow toner cartridge because toner cartridge with level of “Low” will be exhausted soon.

• Code: C1-2120, C1-2120, C1-2140
• Display: Replace with new yellow toner cartridge
• Description: The yellow toner cartridge is at the end of its life.
• Remedy: 1) Open the front cover. 2) Remove the yellow toner cartridge. 3) Install the new yellow toner cartridge. 4) Close the front cover.