HP 8550 Service Manual - Page 148

Note 4 Open the ADF slowly, and check to make sure that the distance l3 shown in the figure is as indicated. The l3 measurement for A3 paper should be 2.3±1 mm. The l3 measurement for 11-by-17 inch paper should be 11.1±1 mm A3 11-by-17 inch ± ± Figure 40. CAUTION Testing adjustment 5 If the distance is not as indicated, loosen the positioning screw (callout 1) and the fixing screws (callout 2) of the ADF document tray (callout 3), and adjust the position of the ADF document tray. When making a test copy, be sure to tighten the two fixing screws and the positioning screw (two pieces). Otherwise, the original might jam and the adjustment become inaccurate. 23 2 21 2 Figure 41. Adjusting ADF document tray 6 Move the ADF input tray to correct the positioning of the original on the glass. If l3 is too large, move the tray toward the rear of the copier. If l3 is too small, move the tray toward the front of the copier. 7 Close the ADF and leave the copy paper on the glass during the adjustment. 8 After adjustment, check to make sure that the positioning screw and the fixing screws are fully tightened. 146 Chapter 4 - Adjustments and maintenance EN