• Code: M3-1110
• Display: Paper Jam in exit area
• Description: A paper jam was detected in the exit area.
• Remedy: 1) Open the rear cover. Remove the jammed paper. (Refer to 4.1.3 Jam removal) 2) Check if the Guide-Change Duplex of the rear cover is defective. 3) Check if the exit sensor and actuator is working normally.

• Code: M3-2130
• Display: Output bin full Remove paper
• Description: The machine detected that the output tray has got full or the bin-full sensor is defective.
• Remedy: 1) Remove the paper on the output tray. (The maximum loading capacity is 150 sheets based on standard paper(80g/m2).) 2) Check if the Bin-full Sensor connector is connected properly. Reconnect it or replace the Bin-full sensor.

• Code: S1-3212
• Display: Error #S1-3212 Turn off then on
• Description: The Motor Control chip on the main board does not work normally.
• Remedy: 1) Turn the machine off then on. 2) If the problem persists, replace the main board.

• Code: S1-5221
• Display: Install wireless NIC
• Description: The communication error between the main board and the wireless board has occurred.
• Remedy: Check if the connection between the main board and the wireless board is normal. If the connection is OK, replace the part in this order. (Flat cable -> Wireless board -> Main board)

• Code: S2-4110
• Display: Door open Close it
• Description: Door is open or the cover open switch is defective.
• Remedy: 1) Check if the front cover is closed perfectly. 2) Check if the connection between the main board and HVPS board is correct. 3) Check if the cover open switch on HVPS board is operated properly. If it is defective, replace the HVPS board.

• Code: S3-3121
• Display: Scanner Locked.
• Description: CIS unit in the scanner does not move.
• Remedy: 1) Check if the CIS unit moves when turning the machine off then on. 2) Check if the CIS cable is connected correctly. Reconnect it. 3) If the CIS unit is defective, replace it. 4) Check if there is any defective part in the scanner. Find and replace it. 5) If the problem persists, replace the main board.

• Code: S6-3123
• Display: Network Problem : IP Conflict
• Description: Network has some problem. (IP address conflicts with that of other system. / Communication error / There is no response when checking the ping test.)
• Remedy: Change the machine’s IP address. • Execute the Samsung Easy Printer Manager program. (Device setting - Network - IP address). Change the IP address. • In case of DHCP or Bootp, reboot the machine to receive a new IP address.

• Code: U1-2320
• Display: Error #U1-2320 Turn off then on
• Description: The temperature control of fuser unit is abnormal. (Open Heat Error)
• Remedy: 1) Turn the machine off. Re-install the fuser unit. Then turn the machine on. Is the error message is disappeared? 2) If the problem persists, turn the machine off and remove the fuser unit. Check if the fuser connector is connected properly. Check if the input voltage is normal.