• Code: A1-2511, A1-2512, A1-2513
• Display: Motor Failure: #. Turn off then on. Call for service if the problem persists
• Description: Black OPC motor operation is abnormal.
• Remedy: • A1-2411 : Black OPC motor is stopped but machine recognizes it as operational. • A1-2412 : Black OPC motor is not operated for print-job. • A1-2413 : Black OPC motor is operating but machine recognizes status as "Stopped". 1) Turn the machine off then on. If the error persists, turn the machine off again. 2) Open the front cover. Check if there are any foreign substances or paper around black drum drive unit. 3) Turn the machine on. If the error persists, turn the machine off again. 4) Remove the rear cover after removing 7 screws. 5) Check if the black OPC motor connector is connected correctly. 6) If the connection is OK, turn the machine on. Enter SVC mode. Select black OPC motor test. (Diagnostics > Engine Diagnostics > Engine Test Routines > 100-0044) Check the motor operation. a) If the motor is not operational, • Check the signal and power with the DVM. • If the checked result is normal, replace the motor(JC31-00123C). • If the checked result is abnormal, check the following. - If 24V power is not generated, replace the SMPS board(JC44-00150B(220V) / JC44-00149B(110V)). - If the control signal is abnormal, replace the main board(JC92-02516A). b) If the motor is operational, • Check the Pin Num 8. If the value is abnormal, replace the main board. If the value is normal, replace the harness.

• Code: A1-4310
• Display: Motor Failure: #. Turn off then on. Call for service if the problem persists
• Description: ITB engage motor does not operate normally.
• Remedy: 1) Enter SVC mode. Select the T1 engage motor test. (Diagnostics > Engine Diagnostics > Engine Test Routines > 100-0080) Push the start button and check the motor operation. 2) If the motor is operational, a) Open the side cover. Check if the ITB T1 Coupler pressure lever is pushed normally as shown below. b) If the motor is stopped after 3 times operation, check the following. • Check if the T1 engage DC motor connector is connected correctly. • Check if the photo-sensor(0604-001415) in ITB unit is contaminated or assembled correctly. c) Remove the ITB unit. Check if the ITB T1 Coupler is rotated counterclockwise smoothly. 3) If there is a motor noise or the motor is not operational normally, check the following : a) Remove the rear cover after removing 7 screws. b) Remove the main drive unit. (Refer to 3.3.9. Main Drive Unit) i) Rotate the gear by hand. • If the motor operation is stiff, replace the motor(JC31-00149A) ii) Measure the resistance value with DVM. • If the measured value is out of the standard area (7-10 ohm), replace the motor(JC31-00149A) c) If the motor is normal, measure the motor signal with DVM. • If the phase output voltage is changed in 0-24V(8-10V), the output value is normal. • If the phase output voltage is not changed to 0 or 24V, replace the main board(JC92-02429A).

• Code: A1-5211, A1-5212, A1-5213
• Display: Motor Failure: #. Turn off then on. Call for service if the problem persists
• Description: Yellow toner is not supplied normally.
• Remedy: • A1-5211 : Yellow toner supply motor is not operational but toner is supplied. • A1-5212 : Yellow toner supply motor does not operate. • A1-5213 : Yellow toner supply is stopped during operation. 1) Open the front cover. If the yellow toner pipe is blocked, open it. 2) Turn the machine off then on. If the error persists, check the following steps. 3) Enter SVC mode. Select the yellow toner supply motor test. (Diagnostics > Engine Diagnostics > Engine Test Routines) • 111-0000 : Toner Dispense Motor Yellow 4) If the motor is not operational, a) Remove the rear cover after removing 7 screws. b) Remove the main board shield. Measure the yellow motor power with DVM. i) If 24V power is generated, replace the yellow toner supply motor(JC31-00159A). ii) If 24V power is not generated, • Measure the 24V power on the SMPS board. If the SMPS board(JC44-00150B (220V) / JC44-00149B (110V)) is defective, replace it. • If the SMPS board is normal, replace the main board(JC92-02516A).

• Code: A1-5311, A1-5312, A1-5313
• Display: Motor Failure: #. Turn off then on. Call for service if the problem persists
• Description: Magenta toner is not supplied normally.
• Remedy: • A1-5311 : Magenta toner supply motor is not operational but toner is supplied. • A1-5312 : Magenta toner supply motor does not operate. • A1-5313 : Magenta toner supply is stopped during operation. 1) Open the front cover. If the magenta toner pipe is blocked, open it. 2) Turn the machine off then on. If the error persists, check the following steps. 3) Enter SVC mode. Select the magenta toner supply motor test. (Diagnostics > Engine Diagnostics > Engine Test Routines) • 111-0010 : Toner Dispense Motor Magenta 4) If the motor is not operational, a) Remove the rear cover after removing 7 screws. b) Remove the main board shield. Measure the magenta motor power with DVM. i) If 24V power is generated, replace the magenta toner supply motor(JC31-00159A). ii) If 24V power is not generated, • Measure the 24V power on the SMPS board. If the SMPS board(JC44-00150B (220V) / JC44-00149B (110V)) is defective, replace it. • If the SMPS board is normal, replace the main board(JC92-02516A).

• Code: A1-5411, A1-5412, A1-5413
• Display: Motor Failure: #. Turn off then on. Call for service if the problem persists
• Description: Cyan toner is not supplied normally.
• Remedy: • A1-5411 : Cyan toner supply motor is not operational but toner is supplied. • A1-5412 : Cyan toner supply motor does not operate. • A1-5413 : Cyan toner supply is stopped during operation. 1) Open the front cover. If the cyan toner pipe is blocked, open it. 2) Turn the machine off then on. If the error persists, check the following steps. 3) Enter SVC mode. Select the cyan toner supply motor test. (Diagnostics > Engine Diagnostics > Engine Test Routines) • 111-0020 : Toner Dispense Motor Cyan 4) If the motor is not operational, a) Remove the rear cover after removing 7 screws. b) Remove the main board shield. Measure the cyan motor power with DVM. i) If 24V power is generated, replace the cyan toner supply motor(JC31-00159A). ii) If 24V power is not generated, • Measure the 24V power on the SMPS board. If the SMPS board(JC44-00150B (220V) / JC44-00149B (110V)) is defective, replace it. • If the SMPS board is normal, replace the main board(JC92-02516A).

• Code: A1-5511, A1-5512, A1-5513
• Display: Motor Failure: #. Turn off then on. Call for service if the problem persists
• Description: Black toner is not supplied normally.
• Remedy: • A1-5511 : Black toner supply motor is not operational but toner is supplied. • A1-5512 : Black toner supply motor does not operate. • A1-5513 : Black toner supply is stopped during operation. 1) Open the front cover. If the cyan toner pipe is blocked, open it. 2) Turn the machine off then on. If the error persists, check the following steps. 3) Enter SVC mode. Select the black toner supply motor test. (Diagnostics > Engine Diagnostics > Engine Test Routines) • 111-0030 : Toner Dispense Motor Black 4) If the motor is not operational, a) Remove the rear cover after removing 7 screws. b) Remove the main board shield. Measure the black motor power with DVM. i) If 24V power is generated, replace the black toner supply motor(JC31-00159A). ii) If 24V power is not generated, • Measure the 24V power on the SMPS board. If the SMPS board(JC44-00150B (220V) / JC44-00149B (110V)) is defective, replace it. • If the SMPS board is normal, replace the main board(JC92-02516A).

• Code: A3-2110, A3-2113, A3-2210
• Display: ID control has failed. Check the CTD sensor(A3-2110) The CTD sensor is dirty. Please clean it with soft cloth or paper(A3-2113) ID control has failed. Check the CTD sensor(A3-2210)
• Description: CTD sensor is defective or 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: A3-3111, A3-3112
• 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).