Chapter 55-20F-5-544) Remove the 2 screws [1], and detach the reader front cover [2].F-5-555.4.4.2 Removing the Reader Rear Cover 0007-3433iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N // iR4570N / iR2230 / / / iR3530 /1) Disconnect the ADF communications cable [1] (if equipped with an ADF)F-5-562) Open the copyboard cover (or the ADF).3) Remove the 4 screws [1], and detach the reader rear cover [2].F-5-575.4.4.3 Removing the Copyboard Glass 0007-3421iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N // iR4570N / iR2230 / / / iR3530 /1) Open the copyboard cover (or ADF).2) Remove the 2 screws [1], and detach the glass retainer [2]; then, detachthe copyboard glass [3].F-5-58When removing the copyboard glass, take care not to touch the following:- glass surface- standard white plateThe presence of dirt can cause white/black lines in the images. If dirt isfound, clean it with lint-free paper moistened with alcohol.[1][1] [2][1]