Brother DCP-9055CDN Service Manual page 299

(3) Disconnect the Flat cable from the Develop FFC holder.
(4) Release the two Hooks to remove the Develop FFC holder from the Upper cable rack.
Develop FFC holder
Hook
Hook
<Left side>
(5) Disconnect cables from the Upper cable rack.
(6) Release the four Hooks to remove the Upper cable rack from the Base frame unit.
Upper cable rack
Hook
<Left side>
Upper cable rack
Fig. 3-161
Hook
Base frame unit
Fig. 3-162
3-118
Confidential