9) Remove the pully clip, and detach the scanner cable (both front and rear).3. Assembling the Mirror Position Tool1) Remove the screw found in position B.Figure 3-4072) Fit the screw removed in step 1) in position A, and tighten it slightly.3) Extend the arm accommodated by the main frame unit it butts against the stopper asin Figure 3-408.4) Tighten the screw.Figure 3-408COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 3 EXPOSURE SYSTEM3-12AABBPosition BAABBPosition A