Brother HL-3040CN Service Manual page 268

(3) Release the Hook to remove the PF line holder from the Side frame L.
PF line holder
Side frame L
(4) Release the two Hooks A on the upper side to remove the Line holder M from the Drum
develop drive unit.
Drum develop drive unit
Hook
Fig. 5-107
Line holder M
Hook
Fig. 5-108
5-94
Hook A
Confidential