Code :

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

Code: U1-2113, U1-2131, U1-2141
Display: Fuser Unit Failure #: Turn off then on.
Description: The temperature control of fuser unit is abnormal. (U1-2113 : Open heat error / U1-2131 : Low heat error / U1-2141 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 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 main board or SMPS.

Code: U2-5111, U2-5113
Display: Black LSU Unit Failure #: Turn off then on.
Description: LSU P-Motor ready error has occurred. / LSU Hsync error has occurred.
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.

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