4–1COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)MECHANICAL SYSTEMI. EXTERNALSA. External CoversNote:Remove the covers as necessary to clean,inspect, or repair the inside of the machine.Those covers that may be detached by merelyremoving their mounting screws are left out ofthe discussions.When installing the copyboard glass, be sure tobutt it against the vertical size plate so that no gapis left for intrusion of foreign matter.Figure 4-103q Copyboard coverw Control panele Right coverr Rear right covert Right doorFigure 4-101y Front right coveru Cassettei Front dooro Size index!0 Copyboard glass11121413!1 Left cover!2 Lower left cover!3 Lower rear cover!4 Upper rear coverFigure 4-10210987236451