Brother MFC990CW Service Manual page 206

Separating the ADF unit from the document cover
(8) Turn the ADF & document cover ASSY upside down.
(9) Remove the seven screws (five "a," one "b," and one "c" screws) from the ADF unit.
(10) Release seven "X" latches provided on the document cover and lift up the right end of the
ADF unit at approx. 30°.
(11) Press "Y" latch on the ADF unit outwards to release it from the document cover and then
slide the ADF unit to the upper right, being careful with the document feed roller 2 ASSY.
The ADF cover also comes off.
Document feed
roller 2 ASSY
Positioning
bosses
(Left)
ADF unit
7
"c"
4
"a"
5
"a"
Latch "Y"
"X"
6-22
Tightening order:
Tighten seven screws
1
in the order of
"a"
6
2
"b"
"a"
"X"
"X"
(Rear)
Latches "X"
Groove
ADF cover
to .
1
7
3
"a"
Document
cover
(6_20_2)
"a": Taptite, bind B M4x12
"b": Taptite, cup B M3x8
"c": Taptite, cup B M3x12
Confidential