Chapter 88-388.6 Registration Unit8.6.1 Overview 0007-2213iR2270 / iR2870 / iR3570 / iR4570The registration roller is driven by the main motor (M2).In between the registration roller and the main motor is the registration clutch (SL2), servicing to turn on and off theregistration roller so that the paper will be matched in relation to the image on the drum at correct registration.F-8-358.6.2 Checking Horizontal Registration 0007-2214iR2270 / iR2870 / iR3570 / iR4570The machine does not have a mechanism to check horizontal registration for both 1st and 2nd sides of a print. Thepoint of horizontal registration for the 2nd side may be adjusted in service mode (i.e., the image write start position).The degree of arching for registration on the 2nd side of a double-sided print must be adjusted separately from theadjustment for the 1st side to accommodate the fact that different feed paths are used up to the registration roller for1st and 2nd sides.Service Mode:COPIER>ADJUST>FEED-ADJ>ADJ-REFEUse it to adjust the horizontal registration for the 2nd side of small-size double-sided prints.M2DC controller PCBJ313J314CL2