Brother DCP-J552DW Service Manual page 159

(7) Open the document scanner unit at around 90 degrees then pull it backwards.
ADF unit*1
Document cover ASSY*2
Document
scanning position
sensor harness*1
Document detection
sensor harness*1
ADF motor harness*1
(8) Open the ADF unit
latches.
Assembling Note When mounting the ADF unit onto the document scanner unit, insert a 2 to 3
cm thick magazine or paper bundle in between to ensure the movement of harnesses. Do not
place objects that can scratch or stain the document cover glass.
(9) Turn the ADF hinge slightly and remove it from the ADF unit
*2
ASSY .
Document
scanner FG wire
Document scanner
motor harness
ADF FG wire*1
*1
, or document cover ASSY
3-42
Document
scanner unit
CIS flat cable
Upper cover
*2
at around 90 degrees and pull out the two
*1
*1 For models with ADF
*2 For models without ADF
(3_053)
or from the document cover
Confidential