Canon BJC 6000 Service Manual - Page 124

Part 5: Maintenance BJC-6000 4.2.3 Removing the ASF unit The ASF unit is attached to the printer unit such that the ASF driving gear and the pick-up roller are matched in phase. Once you removed the assembly screws, painted red to protect against careless removal, which fasten the ASF unit to the printer frame, you must readjust the position of the ASF gear with respect to that of the pickup roller. For the procedure of the ASF gear position adjustment, refer to Part 5: 5.2.3 ASF gear position adjustment (page 5-10). Assembly Screw (Red) ASF Unit Assembly Screws (Red) Figure 5-4 Removing the ASF Unit 4.2.4 Removing the adjustable bearings supporting the carriage shaft The adjustable bearings supporting the carriage shaft are adjusted and secured to the printer frame so that the ideal head-to-paper gap is maintained for best print quality. Once you have loosened the screws, painted red to protect against careless removal, which fasten the adjustable bearings to the printer frame, you must readjust the position of the bearings for head gap adjustment. For the procedure of the head gap adjustment, refer to Part 5: 5.2.4 Head gap adjustment (page 5-11). Adjustable Bearing Supporting the Carriage Shaft Adjustable Bearing Supporting the Carriage Shaft Figure 5-5 Adjustable Bearings Supporting the Carriage Shaft 5-6