HL-L5100DN / HL-L5200DW: replace DR3400 drum
An open-cover OK confirmation for this mono business family.
1 min readFit usable toner into the new drum until it locks, return the corona tab to its marked home position and reinstall the assembly.
Confirm the new drum
- With the machine on, open the front cover.
- Hold OK for about two seconds until Drum Unit appears, then press OK.
- Press Up to reset the new drum’s counter, then close the front cover.