Brother HL-4040CN, HL-4050CDN, HL-4070CDW Service Manual page 94

(6) Connect the Connector (6pin) into the USB host relay PCB ASSY, and connect the
Connector (5pin) into the LCD panel PCB ASSY.
LCD panel PCB ASSY
Connector (6pin)
USB host relay
PCB ASSY
Frame unit
(7) Align the two Hooks of the front side of the Top cover ASSY with the Frame unit and catch
the six Hooks at the same time.
<Back side>
Hooks
Fig. 2-28
Hooks
Fig. 2-29
2-17
Connector (5pin)
Top cover ASSY
Hooks
Frame unit
<Front side>
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