• Code: S3-3121
• Display: Scanner is locked.
• Description: Scanner lock error has occurred. CIS does not move.
• Remedy: 1) Check if the CIS unit is moving when power on. 2) Check if the at cable is connected to the CIS unit properly. Re-connect or replace the cable. 3) If the CIS is defective, replace it. 4) Check if there is any defective part in the scanner unit. (Gear, Belt, Motor etc.) 5) If the problem persists, replace the main board.

• Code: S4-2111, S4-2112
• Display: Fax Memory is almost full. Print or remove received fax Job. Fax memory is full. Print or remove received fax Job.
• Description: The fax memory is almost full.
• Remedy: 1) Print or remove the received fax job.

• Code: S4-3111
• Display: Fax System Failure: #S4-3111. Install fax modem card again.
• Description: The fax board is not installed or defective.
• Remedy: 1) Check if the fax board is installed properly. 2) If the fax board is defective, replace it. 3) If the problem persists, replace the main board.

• Code: S5-3110
• Display: UI System Failure: #S5-3110. Call for service.
• Description: The communication error between main board and OPE board has occurred.
• Remedy: 1) Turn the machine off then on. 2) If the problem persists, check the followings. a) Check the connection between main board and OPE board. Reconnect the harness. b) If the connection is OK, replace the main board or OPE board.

• Code: S6-3123, S6-3128
• Display: This IP address conflicts with that of other system. Check it. 802.1x authentication failed. Please Contact the System Administrator.
• Description: IP address conflicts with that of other system.
• Remedy: 1) Change the machine’s IP address. 2) Check the setting-up for 802.1x confirmation server.

• Code: U1-2132, U1-2315, U1-2320
• Display: Fuser Unit Failure #: Turn off then on.
• Description: The temperature control of fuser unit is abnormal.
• Remedy: 1) Check if the input voltage is normal. 2) Turn the machine off. Remove and reinstall the fuser unit. Be careful when connecting the AC-connector and Thermistor connector. 3) Turn the machine on. Is the error message is disappeared? 4) Check the followings. If the fuser unit has any problem, replace it. a) Check if the fuser connector is connected properly. b) Check if the halogen lamp voltage is normal. c) Check if the thermistor is contaminated or twisted. 5) If the problem persists, replace the main board or SMPS board.

• Code: U1-2330, U1-2334
• Display: Fuser Unit Failure #: Turn off then on.
• Description: The temperature control of fuser unit is abnormal.
• Remedy: 1) Check if the input voltage is normal. 2) Turn the machine off. Remove and reinstall the fuser unit. Be careful when connecting the AC-connector and Thermistor connector. 3) Turn the machine on. Is the error message is disappeared? 4) Check the followings. If the fuser unit has any problem, replace it. a) Check if the fuser connector is connected properly. b) Check if the halogen lamp voltage is normal. c) Check if the thermistor is contaminated or twisted. 5) If the problem persists, replace the main board or SMPS board.

• Code: U1-2340, U1-234H
• Display: Fuser Unit Failure #: Turn off then on.
• Description: The temperature control of fuser unit is abnormal.
• Remedy: 1) Check if the input voltage is normal. 2) Turn the machine off. Remove and reinstall the fuser unit. Be careful when connecting the AC-connector and Thermistor connector. 3) Turn the machine on. Is the error message is disappeared? 4) Check the followings. If the fuser unit has any problem, replace it. a) Check if the fuser connector is connected properly. b) Check if the halogen lamp voltage is normal. c) Check if the thermistor is contaminated or twisted. 5) If the problem persists, replace the main board or SMPS board.