Brother HL-L9300CDW Service Manual page 192

(3) Release the four Hooks and remove the Panel control PCB ASSY from the Top cover ASSY.
Top cover ASSY
(4) Disconnect the Panel control PCB harness ASSY from the Panel control PCB ASSY.
Panel control PCB harness ASSY
Panel control PCB ASSY
Panel control PCB ASSY
Hook
Fig. 3-53
Fig. 3-54
3-51
3b
3a
Hook
CN5
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