4–9COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)MECHANICAL SYSTEM5. Adjusting the Mirror Position (opti-cal length between No. 1 mirror andNo. 2 and No. 3 mirrors)1) Keep the mirror positioning tool near at hand.(See “Assembling the Mirror Positioning Tool.”)2) Move the No. 1 mirror mount in the forwarddirection, and match the angular hole in thefront side plate and the cable fixing screw q.Figure 4-2133) Loosen the set screw of the pulley.4) Set the mirror positioning tool w between theNo. 1 mirror mount and the No. 2 mirror mount(both front and rear).(front) (front)Figure 4-2145) Install the metal fixing of the scanner cable tothe No. 1 mirror mount with two screws e (bothfront and rear).Figure 4-2156) Tighten the set screw of the pulley.7) Remove the tool (FY9-3009).6. Cleaning the Scanner No. 6 Mirror1) Open the front cover.2) Operate the open/close lever to open the body.3) Remove the dust-proofing glass q and thedust-proofing mirror cover w.Figure 4-2164) Using a blower brush or lint-free paper moist-ened with alcohol, clean the No. 6 mirror.21Mirror positioning tool (front) Mirror positioning tool (rear)(front)(front)(front) (rear)1 (front) (rear)1Download service manual and resetter printer at http://printer1.blogspot.com