• Code: S1-2530, S1-2540
• Display: MSOK System Failure: #S1-2511. Turn off then on MSOK Failure: #S1-2521. Call for service PPM data is incorrect. Call for service & change MSOK MSOK Failure: #. Call for service & change MSOK
• Description: MSOK has a problem.
• Remedy: 1) Turn the machine off and on. 2) If the problem persists, turn the machine off again. 3) Remove the rear cover. 4) Check if the MSOK is inserted correctly. Remove and reinstall it. 5) If the problem persists, replace the main board(JC92-02516).

• Code: S2-1211
• Display: Engine System Failure: #S2-1211. Turn off then on
• Description: Communication error between the ASIC on main board and microcontroller IC has occurred.
• Remedy: 1) Turn the machine off and on. 2) If the problem persists, turn the machine off again. 3) Remove the rear cover. 4) Replace the main board(JC92-02516A) 5) Assemble the rear cover. Turn the machine on.

• Code: S2-331C
• Display: Calibrating... Please Wait
• Description: Printing Job is stopped because of high temperature inside machine.
• Remedy: 1) Open the side cover. Cool the machine. And close the side cover. 2) If the problem persists, enter SVC mode. Execute the temperature sensor test. (Diagnostics > Engine Diagnostics > EngineTest Routines > 109-0013 Outer Temperature) 3) Check the temperature sensor connection. If the connection is OK, measure the resistor value of the sensor. 4) If the value is not in 47.5KOm - 52.5KOm (at 25C), replace the sensor(JC32.00015A) 5) If the temperature sensor is OK, remove the rear cover. 6) Replace the main board(JC92-02516A). 7) Assemble the rear cover. Turn the machine on.

• Code: S2-4210
• Display: Front door is open. Close it.
• Description: Front cover is opened.
• Remedy: 1) Close the front cover correctly. 2) Check if the cover open sensor connector is connected properly. Reconnect it. 3) If the sensor is defective, replace it.

• Code: S2-4410
• Display: Right door is open. Close it
• Description: Side cover is opened.
• Remedy: 1) Close the side cover correctly. 2) Check if the cover open sensor connector is connected properly. Reconnect it. 3) If the sensor is defective, replace it.

• Code: S2-5111, S2-5112, S2-5120, S2-5131
• Display: Failed to adjust the color registration
• Description: ACR error has occurred.
• Remedy: 1) Execute “ACR calibration” manually. 2) Check if the ACR sensor is defective and connector is connected properly. 3) Check the image density and the belt of the ITB unit. 4) If the problem persists, main board.

• Code: S2-5132, S2-5133, S2-5135
• Display: Failed to adjust the color registration
• Description: ACR error has occurred.
• Remedy: 1) Execute “ACR calibration” manually. 2) Check if the ACR sensor is defective and connector is connected properly. 3) Check the image density and the belt of the ITB unit. 4) If the problem persists, main board.

• Code: S2-5136, S2-5161, S2-5164
• Display: Failed to adjust the color registration
• Description: ACR error has occurred.
• Remedy: 1) Execute “ACR calibration” manually. 2) Check if the ACR sensor is defective and connector is connected properly. 3) Check the image density and the belt of the ITB unit. 4) If the problem persists, main board.