Brother MFC-J3520 Service Manual page 160

Assembling Note: Mount the Head/carriage unit, using the following steps.
1) When mounting a new Head/carriage unit, apply lubricant to the unit, as specified
in "5.LUBRICATION"
2) When mounting the CR timing belt, insert it into the Head/carriage unit so that the
toothed side faces inwards as shown below and make sure that the upper and lower
edges of the belt are fitted in the Latches.
Harness routing: Refer to
of this chapter.
Fig. 3-23
" Main PCB ASSY",
1
3-40
Latches
" Head/carriage unit"
5
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