E020 indicates a Black Toner malfunction. If you've recently changed the toner and failed to distribute the toner by gently shaking it from side to side, this could be the cause of this error or if the toner is very low it could trigger the same error.
01B0 is a drum error related to your toner error message. If toner cartridge is good, remove the cartridge, clean the drum, replace the cartridge and both errors should clear. A dirty drum will also trigger your 1st error e020.
Hello, I have error code 20-0293 and 20-0486, could you let me know how to fix, please.
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