COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)4. Replacing the Air Filter (FM1/2)1) Open the exhaust vent of the printerunit.Figure 7-4082) Remove the existing air filters.Figure 7-4093) Fit the new air filters.5. Replacing the Ozone Filter (FM3)1) Open the right cover of the printerunit.Figure 7-4102) Slide the lid of the ozone filter holder.Figure 7-411CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS7-12Exhaust ventAir filtersOzone filter holderSlide.LidDownload free service manual at http://printer1.blogspot.com