Samsung ProXpress M4020ND model and fix error codes list – Compatible Printer model: Samsung ProXpress M4020ND – Samsung ProXpress M4020ND Error Codes with quick guides: Code: A1-1110 Display: Error #A1-1110: Turn off then on. Description: Harness or main BLDC motor or main board is defective. / OPC coupler in the toner cartridge(or imaging unit) has […]