Minolta Di551 Service Manual page 252

(5) Install two RADF positioning jigs in the mounting
holes of the original stopper plates (left).
(6) Close the RADF to mate the reference holes and
RADF positioning jigs.
(7) Install three screws to secure each of the two fix-
ing plates with three screws following the
removal procedure in reverse.
(8) Open the RADF and tighten all of the six screws
to secure the two fixing plates.
Reference hole (round)
Reference hole
(oval)
RADF positioning jigs
(9) Remove the RADF positioning jigs and install the
original stopper plate (left) with two screws.
(10) Remove two screws and uninstall the top cover
(left).
RADF positioning jigs
1-P-3
(11) Close the RADF and check whether both stopper
pieces on the RADF-side touch the slit glass.
Stopper piece
Screws (2)
Top cover (left)
(12) If both stopper pieces do not touch the slit glass
at the same time, make adjustments using
adjusting screws A and B alternately.
(13) Perform steps 11 and 12 repeatedly until the two
stopper pieces touch the slit glass at the same
time.
Adjusting screws B
(14) For further installation, follow the removal proce-
dure in reverse.
(15) Open and close angle of RADF can be changed
from 70 degrees to 40 degrees when the stopper
is attached to opposite direction.
EDH
Stopper piece
Adjusting screws A