Jack JK-T781E Manual Download Page 2

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technical parameters and models

Model

JK-T781E

JK-T782E

JK-T783E

JK-T781EK

Purpos

(Textile, chemical fiber fabric )buttonhole`s

sewing lock

Knitting

Buttonhole length

22mm

33mm

40mm

22mm

Stitch width

2.5~4mm

2.5~5mm

2.5~4mm

Cutter length

6.4~19mm

(1/4”~3/4”)

6.4~25.4mm

(1/4”~1”)

6.4~31.7mm

(1/4”~1 1/4”)

6.4~19mm

(1/4”~3/4”)

Speed

100~3600rpm/min

Needle stroke

34.6mm

Presser foot height

10mm

Needle

（

#11~#14

）

Refueling mode

Automatic oiling

Sewing thickness

4mm

Needle count

Factory equipped with 4 unitsG(225,83) J(190,100) L(170,110)

N(152,123)

Market has 8 units 54针

~345

针

Summary of Contents for JK-T781E

Page 1: ...JK T781E series...

Page 2: ...2mm Stitch width 2 5 4mm 2 5 5mm 2 5 5mm 2 5 4mm Cutter length 6 4 19mm 1 4 3 4 6 4 25 4mm 1 4 1 6 4 31 7mm 1 4 1 1 4 6 4 19mm 1 4 3 4 Speed 100 3600rpm min Needle stroke 34 6mm Presser foot height 10...

Page 3: ...il the distance between needle bar and the ruler is 0 Adjust the hook to make the tip of the hook from the upper end of the pinhole 1 6 1 8mm tighten the screw of Rotary hooks to make that the distanc...

Page 4: ...the needle to make the needle in the middle of the pinhole move the needle bar to the lowest point observe and make the upper edge of the pinhole not exceed the needle plate needle plate lowest point...

Page 5: ...e the pinhole at the the lowest plat 2 Adjust the rotary hook positioning screw util hook tip close to the needle but not hit the needle zero distance 3 pls note when the hook catchs thread the rotary...

Page 6: ...he desired scale on the scale plate 2 Reinforce sewing width adjustment Tighten screw 2 to align the reinforcement pointer to the baseline pointer 3 Right baseline position twist screw 3 adjust the cu...

Page 7: ...ize the knife will malfunction the position of the presser foot will change resulting in broken needle broken thread adjustment method when stopping make the scale line of plate align the middle posit...

Page 8: ...Pull out the part put up the canning 2 Loose the screw let the pointer front to the number you need The number should be same as length of cutter Then tighten the screw 18 0 Adjustment of the button h...

Page 9: ...e needle plate hole is too close the thread breakage will happen when you sew Adjustment method 1 Lose the fixed knife fasten screw 2 Adjust fixed knife make the distance between the fixed knife and t...

Page 10: ...position adjustment 3mm Gap Sports pin Sensor chip Sensor The sensor chip is aligned with up side of the stamp mark of sensor Stamp mark Larger Smaller Adjustment methods 1 Loosen the setscrews and ad...

Page 11: ...ss can not lift the foot when stop sewing the sensor lamp lights up and presses presser lift the presser foot Easy to adjust the presser foot up and down during maintain Adjustment method Loosen the s...

Page 12: ...key to enter the user parameter mode 2 Press and hold the key to enter the technician parameter mode Set the value increment parameter increment 1 In the parameter selection area as the key to increa...

Page 13: ...D display script and actual script comparison table 3 Display mode of the LCD screen Digital script part Actual value LCD English script part English alphabet LCD English alphabet LCD English alphabet...

Page 14: ...Press the up and down key and at the same time boot the machine up it will show P11 Press F key and reboot Press enter key to save it 4 Factory reset...

Page 15: ...ss F to get into user parameter mode Press up and down key to change parameter items Press enter key to get the value of this parameter Press up and down key to modify the parameter value Press F key...

Page 16: ...same time boot the machine up Press up and down key to change parameter items Press enter key to get the value of this parameter Press up and down key to modify the parameter value Press enter key to...

Page 17: ...F and enter key and at the same time boot the machine up Press up key to find P26 speed limit and the press ENTER to get the value Press F key to get out of this mode Press up and down key to modify...

Page 18: ...stment Press the up and down key and at the same time boot the machine up Move the hand wheel to adjust and press enter key to save Press up key to find P27 and the press ENTER to get into it Press F...

Page 19: ...10 360 80 actual speed display number 10 P05 Speed limit for 2nd stitch 10 360 80 actual speed display number 10 P06 Speed limit for 3rd stitch 10 360 200 actual speed display number 10 P07 Speed lim...

Page 20: ...p time 1 250 20 In C test setting stop time P21 A test 0 1 0 In A test continual working test with speed P01 P22 B test 0 1 0 In B test full functional test with speed P01 P23 C test 0 1 0 In C test n...

Page 21: ...nsor optoelectronic switch is ok 2 Check if stepper motor s mechanical structure is right E7 a Loose contact of engine plug b Position signal abnormal c Head is blocked d Fabric is too heavy e module...

Page 22: ...cooling fin is good contact E14 Encoder signal fault Check whether the encoder signal is right or change the encoder E15 Power module abnormal overcurrent production Module driver efforts and head ef...

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