Brother MFC-J3520 Service Manual page 231

(4) Remove the two Switchback side frames.
(5) Remove the Switchback roller belt from the Switchback roller and Paper ejection
roller.
(6) Remove the Switchback roller.
Switchback roller belt
Switchback
side frame
Paper ejection roller
(7) Remove the Bushing from the Switchback outer paper guide.
(8) Remove the Switchback roller from the Switchback outer paper guide.
Switchback outer paper guide
Switchback roller
6b
6a
Fig. 3-130
8
Switchback roller
Fig. 3-131
3-111
Switchback side frame
Bushing
7
Confidential