Brother DCP-L8400CDN Service Manual page 302

(2) Remove the three Screw bind M3x6 screws and remove the Main PCB ASSY from the
Main body.
Screw bind M3x6
(Upper side)
Main PCB ASSY
Screw bind M3x6
Note:
Note that the tightening torque is different between the upper/middle side and lower
side of the Screw bind M3x6.
Upper/Middle side: 0.5±0.05 N
Lower side: 0.8±0.1 N
2b
(Middle side)
(Lower side)
Fig. 3-188
·
m
·
m
3-138
Main body
2a
Confidential