4 - 17Adjustment (Main Unit)Inspection andAdjustmentFeed adjustment1. Remove the front cover, and turn on the power while pushing SW1 and SW3 on the main PCB assy. (the buzzersounds four times and test mode starts)*See (4 - 4 "Test Mode") for starting test mode with the front cover in place.2. Press SW3 (with the front cover in place, press five times, select and press ), and select "Feedforward and reverse mode."3. Press SW1 (with the front cover in place, ) and run "Feed forward and reverse mode," checking the forwardand reverse feed amounts.4. Loosen the FPM holder assy. screw (3 x 8).5. Adjust the forward and reverse feed using the FPM holder assy. screw (4 x 25).6. Tighten the screw (3 x 8).*Key point• Confirm that when a material of two layers of broadcloth with paper in between is given 100 stitches forwardand reverse ("Feed forward and reverse" mode), the forward side is 0 – 10 mm longer than the reverse side.• Tightening the screw (4 x 25) => shortens the reverse side.• Loosening the screw (4 x 25) => lengthens the reverse side.176
