Remedy: 1) Open the top cover. Check if the paper has jammed. If there is the jammed paper, remove it. 2) If the error message in Smart Panel is not disappered, check the Regi sensor and actuator. If they are defective, replace them.
Code: S2-4110
Display: Door is open. Close the door.
Description: Door is open or the cover open sensor is defective.
Remedy: 1) Check whether the door is closed perfectly. 2) Check the cover open switch on the HVPS is operated properly. If it is defective, replace the HVPS board.
Code: U1-2113
Display: Fuser Unit Failure #U1-2113. Please turn off then on.
Description: Fuser Unit is transferred Power.
Remedy: 1) Turn the machine off and turn it on again. 2) Check the following : a) Check the power voltage of the fuser unit. (110V, 220V) b) Check if the Heat lamp is broken. c) Check if the AC connection of Heat lamp is disconnected or contaminated. d) Check if the thermostat is blown. e) Check if there is any jammed paper in fuser unit. f) Check if the power voltage is normal. (Is the voltage during the operation ±10% of the rated voltage?) 3) If the problem persists, replace the fuser unit. 4) If the problem persists after replacing the fuser unit, replace the engine board or SMPS.
Code: U1-2131
Display: Fuser Unit Failure #U1-2131. Please turn off then on.
Description: The Fuser is being diagnosed for Low Heat Error.
Remedy: 1) Turn the machine off and turn it on again. 2) Check the following : a) Check the power voltage of the fuser unit. (110V, 220V) b) Check if the Heat lamp is broken. c) Check if the AC connection of Heat lamp is disconnected or contaminated. d) Check if the thermostat is blown. e) Check if there is any jammed paper in fuser unit. f) Check if the power voltage is normal. (Is the voltage during the operation ±10% of the rated voltage?) 3) If the problem persists, replace the fuser unit. 4) If the problem persists after replacing the fuser unit, replace the engine board or SMPS.
Code: U1-2141
Display: Fuser Unit Failure #U1-2141. Please turn off then on.
Description: The Fuser is being diagnosed for Over Heat Error.
Remedy: 1) Turn the machine off and turn it on again. 2) Check the following : a) Check the power voltage of the fuser unit. (110V, 220V) b) Check if there is any jammed paper in fuser unit. c) Check if the power voltage is normal. (Is the voltage during the operation ±10% of the rated voltage?) 3) If the problem persists, replace the fuser unit. 4) If the problem persists after replacing the fuser unit, replace the engine board or SMPS.
Code: U2-5111, U2-5113
Display: Black LSU Unit Failure: #U2-5111. Please turn off then on. Black LSU Unit Failure: #U2-5113. Please turn off then on.
Description: Black LSU occurs Lready Error.
Remedy: 1) Turn the machine on and turn it off again. Has the error message disappeared? 2) Check if the LSU connector is connected properly. Reconnect it. 3) If the problem persists, replace the LSU.