Brother MFC-3340CN Service Manual page 147

(3) Remove screw "a" from the MJ shield and take it off the lower MJ/PS shield.
(4) Remove the power supply shield.
(5) Remove five screws ("c" and "d1" through "d4" screws) from the grounding terminal and
power supply PCB.
(6) Remove screw "b" from the MJ PCB and take it off the lower MJ/PS shield.
Power cable
MJ-main harness
MJ-line harness
MJ/PS shield box
n Reassembling Notes
• When securing the power supply PCB, tighten "d1," "d2," "d3," and "d4" screws in this order.
MJ PCB
Grounding terminal
Power supply PCB
"a"
"b"
"c"
"d3"
"d2"
"a": Screw, pan (washer) M3x8DB
"b" and "d1" through "d4": Taptite, cup S M3x6
"c": Screw, pan (s/p washer), M4x8DB
5-49
MJ shield
MJ-line harness (2-pin)
MJ-main harness 1 (2-pin)
Lower MJ/PS shield
"d4"
Power supply PCB
"d1"
NOTE: Tighten "d1" through "d4"
screws in this order.
Power supply shield
Confidential