Samsung SLM2820DW

• Code: S2-4120
• Description: Door open Close it
• Causes: Door is open or the cover open switch is defective.
• Remedy: 1) Check if the front cover is closed perfectly.
  2) If the error persists, check that the cover-open sensor is working normally. If it is defective, replace the HVPS board.

• Code: S5-3110
• Description: Error #S5-3110 Call for service
• Causes: 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
• Description: Network Problem: IP Conflict
  802.1x Network Error
• Causes: 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: U1-2115, U1-2116
• Description: Error #U1-2115 Turn off then on
  Error #U1-2116 Turn off then on
• Causes: The fuser unit has the problem for pressure control.
• Remedy: 1) Turn the machine off. Remove and reinstall the fuser unit. Turn the machine off. Is this error message disappeared?
  2) Open the rear cover. Check if the fuser pressure cam is working normally. • If the cam operation is normal, replace the cam sensor.
  3) Remove the side cover. Check if the fuser motor is working normally.
  4) Check if the swing-gear is in the position below when the cam works. If not, replace the fuser drive unit.

• Code: U1-2132, U1-2315, U1-2320
• Description: Error #U1-2132 Turn off then on
  Error #U1-2315 Turn off then on
  Error #U1-2320 Turn off then on
• Causes: 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
• Description: Error #U1-2330 Turn off then on
  Error #U1-2334 Turn off then on
• Causes: 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.