Brother hl 1650 - B/W Laser Printer Service Manual page 109

3.4 Network Board (For HL-1670N only)
(1) Open the access cover by sliding it to the backward.
(2) Loosen the two bind S M3x8 Taptite screws to remove the PCB access plate.
Access cover
(3) Remove the two bind S M3x8 Taptite screws to remove the network board cover plate.
(4) Disconnect the connector connected with the main PCB and remove the network board.
Printer
Network board
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PCB access plate
Fig. 4-16
Fig. 4-17
4-11
Taptite, bind S M3x8
Printer
Taptite, bind S M3x8
Main PCB