Brother International BE-1204B Stand Alone Type Instruction Manual - English - Page 174
Mechanical
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Chapter 10 Troubleshooting Mechanical Section Check these points once again Problem ! Thread breakage ! Needle (presser foot) interference with embroidery hoop ! Needle breakage ! Not embroidered properly ! Machine operation abnormal Check point • Is the machine properly threaded? • Is thread tension too high? • Is the rotary hook assembly clogged? • Is there thread in the bobbin? • Is the needle bent? • Is there a rough edge or flaw on the needle plate, rotary hook, or bobbin case that might cut the thread? • Is the needle installed correctly (direction, angle, etc.) • Is the presser foot in contact with the material? • Are the thread thickness and needle size correct? • Is a thread with right-hand twist being used? (If such a thread is used, replace with a thread with left-hand twist.) • Is there any adhesive on the needle? • Is the material tension too weak? • Is there too much play between the outer rotary hook and inner rotary hook? • Does the outer rotary hook turn smoothly? • Is the clearance between the rotary hook stopper and the rotary hook adjusted correctly? • Does the thread come out from the bobbin case smoothly? • Is the embroidery hoop too small? • Check the size and needle start position in the sewing data. • Is the needle attached correctly (direction, height, etc.)? • Is the needle bent? • Is the rotary hook attached correctly? • Is the timing set correctly? • Is there any backlash with the needle bar case (back/forth and right/left)? • Is the rotary hook stopper correctly attached to stop the rotary hook? • Is the needle size correct and the tip sharp? • Does the thread pass through the hole center of the presser foot? • Is the material edge caught in the machine? (Are embroidery hoop and other related parts operating correctly?) • Is the material stretched properly? • Is thread tension proper? Does the lower thread come out smoothly? • Is embroidery data normal? • Is the XY carriage belt loosened? • Is the XY carriage belt damaged? • Are any set screws for the XY drive pulley loosened? • Are any fixing screws for the coupling of the Y drive shaft loosened? 10-2 BE-1204B-BC • BE-1206B-BC