PDFMAILER.DE I N D E X WIRING DIAGRAM GENERAL TROUBLE SHOOTING PROCEDURE WHAT TO DO WHEN ELECTRONIC QUICK CHECK SERVICE ACCESS 8-12 FACE COVER TOP COVER BELT COVER BASE PLATE BED COVER FRONT COVER REAR COVER MECHANICAL ADJUSTMENT 13-23 NEEDLE POSITION NEEDLE BAR HEIGHT NEEDLE TO SHUTTLE TIMING CLEARANCE BETWEEN NEEDLE AND HOOK...
PDFMAILER.DE WIRING DIAGRAM NAME OF ELECTRONIC PARTS AND WIRING EACH CONNECTOR SHOULD BE CONNECTED AS FOLLOWS ; A: BUTTONHOLE SENSOR TRANSFOMER (PRIMARY) B: UPPER SHAFT SENSOR TRANSFOMER (SECONDARY) C: SEWING LIGHT RECEPTACLE (PRIMARY) D: FEED STEPPING MOTOR RECEPTACLE (SECONDARY) E: ZIGZAG STEPPING MOTOR K-BOARD F: DC MOTOR F-BOARD...
PDFMAILER.DE WHAT TO DO WHEN CONDITION CAUSE HOW IS FIX REFERENCE Needle is not inserted Insert the needle properly 1. Skipping stitches properly. Needle is bent or worn. Change the needle Incorrectly threaded Rethread Needle or thread are Use the recommended sewing inappropriate for fabric needle and thread being sewn.
PDFMAILER.DE CONDITION CAUSE HOW IS FIX REFERENCE Thread bobbin correctly. 4. Breaking bobbin Incorrectly threaded thread. bobbin. Too much thread is Adjust the bobbin winding stopper. around on the bobbin. Lint is stuck inside the Clean the shuttle. bobbin holder. Thread quality is too low.
PDFMAILER.DE SELF DIAGNOSTIC TESTS PREPARATION • Turn off the power switch. • Shift the bobbin winder spindle to the left. • Raise the feed dog. • Shift the slide volume to the left. • Remove the presser foot and raise the presser foot lifter. •...
PDFMAILER.DE SELF DIAGNOSTIC SHEET STEP PROCEDURE CORRECT CONDITION DEFECTIVE CONDITION • Beep sounds when the buttons • Turn on the power switch while No beep sound. • simultaneously pressing are pressed. Does not enter 7 Segment LED • LED displays “8.8”, and blinks in needle up/down button and the reverse button.
PDFMAILER.DE SELF DIAGNOSTIC SHEET STEP PROCEDURE CORRECT CONDITION DEFECTIVE CONDITION Press the needle up/down When the needle is at LED display is different from that button, LED displays “07” for the highest position, shown to the left. UPPER SHAFT one second. LED displays “LH”.
PDFMAILER.DE FACE AND TOP COVER FACE COVER 1. Remove the cap and set screw (A). 2. Remove the face plate while pulling it toward you so that face plate hook is released. TO ATTACH 1. Attach the face plate. Tighten the setscrew (A) and attach the cap. TOP COVER TO REMOVE 1.
PDFMAILER.DE BELT COVER TO REMOVE 1. Remove the cap. 2. Remove the setscrew (A) and (B). 3. Lift up the handle and loosen the setscrew the belt cover. TO ATTACH 1. Attach the belt cover with the setscrew (A), (B) and (C).
PDFMAILER.DE BASE PLATE AND BED COVER BASE PLATE TO REMOVE 1. Remove the setscrew (A) and 4 screws (B). 2. Remove the base plate (C). TO ATTACH 3. Reverse this procedure. BED COVER TO REMOVE 1. Remove the 2 screws (D). 2.
PDFMAILER.DE FRONT COVER FRONT COVER TO REMOVE 1. Remove the face cover, top cover, belt cover and bed cover (see page 8, 9 and 10). 2. Remove the set screw (A) and loosen the setscrews (B), (C), (D), (E), (F) and (G). 3.
PDFMAILER.DE REAR COVER TO REMOVE 1. Remove the face cover, top cover, belt cover and bed cover. (See pages 8, 9 and 10.) 2. Loosen the setscrews (A), (B), (C) and (D). 2. Remove the cap, setscrew (E) and set screw (F). 3.
PDFMAILER.DE NEEDLE POSITION When straight stitch (----) is selected, needle should be in the middle of needle plate hole. When the machine is set for maximum zigzag width, the clearance between needle at the left and right should be minimum 0.2 mm. 1.
PDFMAILER.DE NEEDLE BAR HEIGHT The distance between the upper edge of needle eye and the tip of the hook should be in the range of 1.6-2.0 mm when the tip of hook meets the right side of the needle in ascending travel of needle from its left and lowest position.
PDFMAILER.DE NEEDLE TO SHUTTLE TIMING When the machine is set for the straight stitch pattern No.2 (left needle position), the amount of ascending travel of the needle bar between its lowest position at the left needle drop and the position where the tip of the hook meets the right side of the needle should be 3.25- 3.55mm.
PDFMAILER.DE CLEARANCE ADJUSTMENT The clearance between the needle and the point of hook should be –0.1 to +0.05 mm. PREPARATION: 1. Remove the needle plate, bobbin holder, and bed cover, and replace the needle with the test pin (D). 2. Turn the power switch on, and select pattern No.2 (simple zigzag). (maximum zigzag width) ADJUSTMENT 1.
PDFMAILER.DE BACKLASH (LOWER SHAFT GEAR) TO CHECK 1. Turn the power switch off. 2. Remove the needle plate and bobbin holder. 3. Jog the hook race back and forth to check rotary play. The standard play should be 0.8 mm (0.3") or less when the hook point is within the feed dog width.
PDFMAILER.DE FEED DOG HEIGHT The highest position of the feed dog should be between 0.80 to 0.90 mm from the surface of the needle plate when the pressure dial is set at "3" and the presser foot is lowered. 1. Set the pressure dial at "3" and lower the presser foot. 2.
PDFMAILER.DE ZIGZAG SYNCHRONIZATION The needle should start to swing between 6.3 to 7.5 mm above the surface of the needle plate when the machine is set for zigzag stitching. 1. Remove the top cover (see page 8). 2. Turn on the power switch, select the pattern No. 2 and set the machine at the maximum zigzag width.
PDFMAILER.DE STRETCH STITCH FEED BALANCE TO CHECK When a stretch pattern is sewn with the feed balancing dial (C) set at the standard setting mark '' 4 '', the pattern should be as indicated with the '' O '' mark in the following figure. If not (if there is no balance between forward feeding and backward feeding), Then make an adjustment as follows.
PDFMAILER.DE UPPER THREAD TENSION The upper thread tension should be between 75–90g when pulling the thread (size 50 cotton thread) in the direction of "C" with the tension dial at "3". (The presser foot should be lowered). 1. Set the thread tension at "3". 2.
PDFMAILER.DE BUTTONHOLE TO ADJUST THE BUTTONHOLE LEVER GUIDE 1. Set the machine in buttonhole sensor adjusting mode. (See below, The LED should display "H" or "L".) 2. Remove the face cover. 3. Lower the buttonhole lever. Loosen the setscrew (A) and position the buttonhole lever guide so the LED displays "L".
PDFMAILER.DE PRESSER BAR HEIGHT AND ALIGNMENT TO CHECK: 1. Raise the presser foot lever (B). 2. The distance between the zigzag foot (A) and the needle plate (C) should be 6.0 mm (0.24''). If the height is greater or less than 6 mm (0.24''), adjust as follows. ADJUSTMENT: 1.
PDFMAILER.DE THREADER PLATE If the hook of the threader plate is damaged, change or adjust the part as follows: TO REMOVE: 1. Push down the needle threader knob and pull the needle threader plate (A) down to remove it (See Fig.1). 2.
PDFMAILER.DE A-BOARD AND FUSE REPLACING THE FUSE TO REMOVE: 1. Remove the front cover (See page 11). 2. Remove the four setscrews and lift off the cover on A-board. 3. Remove the fuse (Pry it out with a screwdriver). TO INSTALL: 4.
PDFMAILER.DE TRANSFORMER TO REMOVE: 1. Remove the A-board (See page 25). 2. Remove the two setscrews and remove the transformer. TO INSTALL: 1. To install the transformer, follow the above procedure in reverse. NOTE Place the rear of the transformer on the transformer support. Slide the two transformer wire tubes to the side of transformer and secure them to the zigzag stepping motor wire so they will not come in contact with any moving parts.
PDFMAILER.DE MACHINE SOCKET TO REMOVE: 1. Remove the front cover (See page11). 2. Remove the two connectors from the A-board. 3. Remove the 2 setscrews (B) and remove the machine socket. TO INSTALL: 1. To install the machine socket, follow the above procedure in reverse. NOTE Pull out the cord in front of the arm to prevent it from contacting with the lower shaft or there moving parts, and secure the feed motor cord with a binder.
PDFMAILER.DE K-BOARD AND F-BOARD K-BOARD TO REMOVE: 1. 1.Remove the front cover (See page 11). 2. Disconnect the F-board connector. 3. Remove the 7 setscrews (A) and remove the printed circuit K-board. TO ATTACH: 1. To attach the board "K", follow the above procedure in reverse. Note Ensure to insert the projection of the slide volume into the forked slide knob.
PDFMAILER.DE DRIVING MOTOR (DC MOTOR) TO REMOVE 1. Remove the front cover (see page 11). 2. Remove the belt. 3. Pull out the motor connector from the A-board. 4. Remove screws (A) and (B). 5. Take off the driving motor. TO ATTACH 1.
PDFMAILER.DE BUTTONHOLE SENSOR TO REMOVE 1. Remove the face and front cover (see page 8 and 11). 2. Remove screw (A), then remove the buttonhole sensor (B) from the sensor set plate (C). 3. Pull out the connector of buttonhole sensor unit (D) from the A-board. 4.
PDFMAILER.DE UPPER SHAFT SENSOR TO REMOVE: 1. Remove the front cover (See page 11). 2. Remove the 2 setscrews (A) and remove the A-board. 3. Remove the setscrew (B) and slide the upper shaft shield plate to the left. 4. Remove the 2 setscrew (C) and remove the upper shaft sensor (P-board). TO ATTACH: 1.
PDFMAILER.DE ZIGZAG STEPPING MOTOR TO REMOVE 1. Remove the front cover (see page 11). 2. Remove the 4 screws (A) and A-board setting plate. 3. Remove the 2 screws (B), 2 screws (C) and remove the motor (D). TO ATTACH 1.
PDFMAILER.DE FEED STEPPING MOTOR TO REMOVE: 2. Remove the front cover and base (See page 10 and 11). 3. Remove the E-ring (B). 4. Remove the 2 setscrews (A) and remove the feed stepping motor. TO ATTACH: 5. To attach the feed stepping motor, follow the above procedure in reverse. Note: Check the "STRETCH STITCH FEED BALANCE"...