background image

22

To enter self-diagnostic mode:
Turn the power switch on while simultaneously pressing needle up/down button and the start/stop button.
Press the start/stop button five times to select menu item "6".
Press the needle up/down button.
If the interval between each step is longer than 2.5 seconds, the machine will revert to normal sewing mode.
Should this occur, start over again from the step 1.

Preparation:

 

1. Turn the power switch.

 

2. Move the bobbin winder spindle to the left.

 

3. Raise the feed dog.

 

4. Set the speed control lever to the left.

 

5. Remove the presser foot and raise the presser foot lifter.

 

6. Turn the hand wheel toward you to raise the needle to its highest position.

 

7. Connect the foot control to the machine.

Notes:
 

• Be careful: the sewing machine may start running in its own while in test mode.

 

• Turn off the power switch before replacing any parts.

 

• Repeat the diagnostic test until the problem has been resolved.

 

• You can skip steps in the diagnostic procedure and go directly to the test you want to perform.

 

    (Enter self-diagnostic mode, then select the step number of the diagnostic test you require by 

 

    pressing the needle up/down button)

To begin:
    Turn on the switch, if any of the following problems occur, take the recommended actions in the order 
    they are shown.
     
   1. The machine does not respond when the power switch is turned on:
 

 Check each connector connection

 

 Replace the machine socket

 

 Replace the A-board

 

 Replace the power transformer

   2. The sewing machine lamp does not light up:
 

 Replace the light bulb

 

 Replace the A-board

   3. The LED display shows "            " to "           " :   
 

 Replace the A-board

 

SELF DIAGNOSTIC TESTS

Содержание Star Edition

Страница 1: ...SERVICE MANUAL MODEL Star Edition...

Страница 2: ...T 15 NEEDLE SWING TIMING 16 NEEDLE THREAD TENSION 17 STRETCH STITCH FEED BALANCE 18 REPLACEMENT AND ADJUSTMENT OF THE NEEDLE THREADER PLATE 19 ADJUSTING BUTTONHOLE LEVER POSITION 20 REPLACING THE ELEC...

Страница 3: ...HA x 11 blue tip needle Adjust the presser bar level to make the pressure stronger See mechanical adjustment Needle bar height See mechanical adjustment Needle to hook timing See mechanical adjustment...

Страница 4: ...uch thread is wound on the bobbin 3 Lint is stuck inside the bobbin holder 4 Thread quality is too low 5 Thread is jamming around the bobbin holder Set the bobbin thread correctly Adjust the position...

Страница 5: ...backlash lower shaft gear Eliminate the looseness See part removal and replacement driving motor dc motor Oil all moving parts P 14 P 27 P 31 7 Deformation pattern 1 Inappropriate feed balance 2 Inapp...

Страница 6: ...4 SERVICE ACCESS 1 FACE COVER TO REMOVE 1 Remove the setscrew A and remove the face cover TO INSTALL 2 Follow the above procedure in reverse Face cover Setscrew A...

Страница 7: ...the left and remove the 4 setscrews A remove the bed cover TO INSTALL 2 Set the drop lever to the left and install the bed cover Secure the bed cover with the 4 setscrews A SERVICE ACCESS 2 Setscrew...

Страница 8: ...screw C and D 3 Remove the cap and loosen setscrew E 4 Disconnect all the connectors from the circuit board A NOTE Do not disconnect the connectors by pulling on cord To disconnect grasp the connector...

Страница 9: ...CCESS 3 2 FRONT COVER TO REMOVE 5 Disengage the 6 hooks indicated by white arrows and clear the feed balancing dial 6 Remove the front cover TO INSTALL 7 Follow the above procedure in reverse Feed bal...

Страница 10: ...7 2 Loosen setscrews A B C D E and F then remove the rear cover NOTE Remove the presser lifter from the rear cover first while presser lifter lowered TO INSTALL 3 Follow the above procedure in reverse...

Страница 11: ...the foot and the feed dog window on the needle plate should be parallel 1 Remove the face cover see page 4 and raise the presser foot Loosen the setscrew to adjust the presser foot height 6 0 mm and t...

Страница 12: ...s 1 Remove the face cover see page 4 2 Turn the power switch on and check the needle drop position 3 If the needle drop is out of position adjust it to proper position by turning the adjusting screw s...

Страница 13: ...the pattern simple zigzag maximum zigzag width 3 Remove the bed cover see page 5 4 Turn the handwheel toward you and set the needle bar at the lowest position 5 Loosen the 2 setscrews on the lower sh...

Страница 14: ...ttern simple zigzag maximum zigzag width 4 Turn the handwheel toward you until the tip of hook meets the right side of the needle 5 Loosen the setscrew 6 Adjust the height of the needle bar by moving...

Страница 15: ...B C then slightly tighten the hinge screw C 2 Turn the handwheel toward you to bring the hook point behind the needle Adjust the clearance between the test pin and the point of the hook in the left a...

Страница 16: ...0 8 mm If there is more than 0 8 mm play adjust as follows ADJUSTMENT PROCEDURE 1 Remove the bed cover see page 5 and loosen the setscrew 2 Turn the lower shaft bushing eccentric in the direction A w...

Страница 17: ...urn the power switch on 3 Select the straight stitch pattern with maximum length 4 Turn the handwheel toward you to set the feed dog at the highest position 5 Loosen the setscrew and nut 6 Adjust the...

Страница 18: ...ly with your hand until the needle start to swing Loosen the setscrew and turn the upper shaft shield plate in the direction of A If the swing point is higher than 7 5 mm B If the swing point is lower...

Страница 19: ...within the above limit adjust as follows 1 Set the tension dial at 4 2 Lower the presser foot 3 Remove the front cover see page 6 7 2 Pull the spring D away from the lead screw 3 If the top tension is...

Страница 20: ...r 3 Enter the adjusting mode Sew the stitch pattern 8 until the machine stop automatically and check the stitch length Standard length of five 8 characters 32 mm to 40 mm 4 Remove the base cap 5 If th...

Страница 21: ...n B and push it up to snap fit TO ADJUST THE THREADER PLATE POSITION 1 If the hook on the threader plate touches the left or right side of the needle hole loosen setscrew C and adjust the hook positio...

Страница 22: ...etween the slider and the buttonhole foot 6 Turn the adjusting screw to the left until the LED display changes from L to H 7 Next turn the adjusting screw right until the LED display changes from H to...

Страница 23: ...by pulling on the cord To disconnect grasp the connector not the cord Connect the connector to the connector post of the same color on the circuit board Bobbin winder switch Upper shaft sensor Lamp B...

Страница 24: ...to the machine Notes Be careful the sewing machine may start running in its own while in test mode Turn off the power switch before replacing any parts Repeat the diagnostic test until the problem ha...

Страница 25: ...is model 06 Buttonhole Sensor Procedure Turn on the power switch while simultaneously pressing the needle up down button and start stop button Press the start stop button five times to select menu ite...

Страница 26: ...ns 278 The maximum value should be 370 to 390 When the speed control lever is at the left LED displays 00 The indicated value hexadecimal increase as you move the speed control lever to the right and...

Страница 27: ...sen 7 setscrews and remove the circuit board A TO INSTALL 4 Follow the above procedures in reverse NOTE Do not disconnect the connectors by pulling on cord To disconnect grasp the connector not the co...

Страница 28: ...ve the board F TO INSTALL 4 Follow the above procedures in reverse NOTE Insert the lower part of the board F into the hole of rear cover when attaching the board F Check function of the each buttons n...

Страница 29: ...elt with 2 setscrews 2 Loosen the setscrews slightly and move the motor up or down to adjust the motor belt tension The belt should deflect 7 9 mm when applying 300 grams of load to the middle of the...

Страница 30: ...en 2 setscrews A and a setscrew B then remove the switching regulator TO INSTALL 3 Follow the above procedures in reverse NOTE Cords should not contact the lower shaft motor belt etc REPLACING SWITCHI...

Страница 31: ...ages 6 8 2 Remove 2 setscrews 3 Remove E ring 4 Remove stepping motor zigzag TO INSTALL 5 Follow the above procedures in reverse NOTE Check the needle drop position after replacing the stepping motor...

Страница 32: ...s 6 8 2 Remove 2 setscrews 3 Remove E ring 4 Remove stepping motor feed TO INSTALL 5 Follow the above procedures in reverse NOTE Check the stretch stitch balance after replacing the stepping motor REP...

Страница 33: ...y parts need to be lubricated OIL Use good quality sewing machine oil at the points A B C D E F G H J K indicated by black arrows GREASE White grease is recommended for use on gears and cam surfaces I...

Отзывы: