Hp MFP 178nw Reset imaging drum unit, Error Replace New imaging unit

enter tech mode or service mode
menu- back-left-right-ok-stop-menu
enter pass code 1934
using Right left and ok keys

[@alishahishmah498]

TQ for sharing usefull tips.

[@7PropagandaPanda7]

thank you very much ---worked perfectly

[@al-rubaie857]

Have same printer keep flashing orange light. They told me toner not original.

[@al-rubaie857]

Any suggestions to fix it plz