4 On the calibration target page, extend the wide line (callout 1) on the top, left corner and the wide line on the top, right corner (callout 2) to the edge of the paper. 5 Using a straight edge, draw a line 1 mm (0.04 inch) in from the top, left edge of the page (callout 1) and from the top, right edge of the page (callout 2). Make the lines approximately 30 mm (1.2 inch) long. 1 2 Figure 197. Left side front calibration (2 of 4) 6 Load the calibration target face down, and copy it using the ADF frontside optical unit. 7 Align the edge of the thick, black lines on the copy to the lines drawn on the original calibration target that are 1 mm (0.04 inch) from the edges.
Note Make sure that you can see white on both sides of the calibration target. If not, you cannot perform the necessary measurements. 8 On the calibration target, compare the line on the left side of the original to the line on the left side of the copy. Figure 198. Left side front calibration (3 of 4) 9 Determine whether the copied page needs to be shifted to the left or to the right. If the copied page needs to be shifted, determine the required distance in millimeters. 210 Chapter 7 Troubleshooting C8523-90921