CONTENTS
I. EXPLANATION OF THE LK-1900S,
COMPUTER-CONTROLLED HIGH-
SPEED BARTACKING MACHINE ........1
1. SPECIFICATIONS ..............................................1
2. CONFIGURATION .............................................2
2-1. Names of main unit ........................................... 2
2-2. Names and explanation of switches on the
operation panel .................................................. 3
3. INSTALLATION .................................................. 4
3-1. Installing the electrical box .............................. 4
3-2. Installing the pedal sensor ............................... 4
3-3. Attaching the connecting rod ........................... 5
3-4. Installing the head support rod ........................ 5
3-5. Installing and connecting the power switch ... 6
3-6. How to carry the sewing machine.................... 7
3-7. Installation of the sewing machine head......... 7
3-8. Installing the drain receiver and the head
support rubber ................................................... 8
3-9. Safety switch...................................................... 8
3-10. Tilting the sewing machine head ..................... 9
3-11. Installing the operation panel .......................... 9
3-12. Connecting the cords ..................................... 10
3-13. Handling the cords .......................................... 11
3-14. Installing the eye protection cover ................ 12
3-15. Installing the thread stand ............................. 13
3-16. In the case the machine is transported
after factory-completed at the time of
shipment .......................................................... 13
4. OPERATION OF THE SEWING MACHINE ..... 14
4-1. Lubrication ....................................................... 14
4-2. Attaching the needle ....................................... 14
4-3. Threading the machine head .......................... 15
4-4. Installing and removing the bobbin case ...... 15
4-5. Installing the bobbin ....................................... 16
4-6. Adjusting the thread tension .......................... 16
4-7. Adjusting the thread take-up spring .............. 17
5. OPERATION OF THE SEWING MACHINE
(BASIC) ............................................................17
5-1. Selection of language ..................................... 17
5-2. Setting the pattern number ............................. 18
5-3. Setting the item data ....................................... 18
5-4. Checking the contour of a sewing pattern .... 21
5-5. Sewing .............................................................. 22
5-6. Changing the pattern to a different one ........ 22
5-7. Winding a bobbin ............................................ 23
5-8. How to open the tension disk ......................... 24
5-9. LED hand light ................................................. 25
6.
OPERATION OF THE SEWING MACHINE
(ADVANCED) ...................................................26
6-1. Performing sewing using the pattern keys .. 26
6-2. Sewing using the combination function
(cycle sewing) .................................................. 31
6-3. Sewing through the use of the counter ......... 34
6-4. How to use the temporary stop ...................... 37
6-5. Copying or deleting various kinds of
pattern data ...................................................... 38
6-6. Communication ............................................... 40
6-7. Cautions in operation ...................................... 42
6-8. Setting enable/disable of standard pattern
invoking ............................................................ 43
6-9. How to use the F key ....................................... 44
6-10. Production support function ........................ 45
7. MAINTENANCE ...............................................51
7-1.
Adjusting the height of the needle bar .......... 51
7-2. Adjusting the needle-to-shuttle relation ........ 52
7-3. Adjusting the lift of the work clamp foot ....... 53
7-4. The moving knife and counter knife .............. 53
7-5. Adjustment of the wiper .................................. 54
7-6. Draining waste oil ............................................ 54
7-7. Amount of oil supplied to the hook ............... 55
7-8. Replacing the fuse........................................... 55
7-9. Replenishing the designated places with
grease ............................................................... 56
8. HOW TO USE THE MEMORY SWITCH .........58
8-1. Method of changing memory switch data ..... 58
8-2. List of the memory switch functions ............. 59
9. OTHERS ..........................................................62
9-1. Table of the standard pattern specications 62
9-2. Table of the standard patterns ....................... 63
9-3. Table of the work clamp foot .......................... 65
9-4. Installing the foot pedal switch (optional) ..... 67
9-5. Error list............................................................ 68
9-6. Message list ..................................................... 72
9-7. Troubles and corrective measures (sewing
conditions) ....................................................... 74
9-8. Table of the optional parts .............................. 76
II. EXPLANATION OF THE LK-1903S,
COMPUTER-CONTROLLED HIGH-
SPEED LOCKSTITCH BUTTON
SEWING MACHINE .............................78
1. SPECIFICATIONS ............................................78
2. PREPARATION OF THE SEWING MACHINE 78
2-1. Installation of the sewing machine and
preparation of the operation .......................... 78
2-2. Needle and thread ........................................... 78
2-3. Various sewing modes .................................... 79
3. ADJUSTMENT OF THE SEWING MACHINE .80
3-1. Position of the button clamp jaw lever .......... 80
3-2. Adjusting the feed plate .................................. 81
3-3. Adjusting the button clamp jaw lever ............ 82
3-4. Adjusting the lifting amount of the button
clamp ................................................................ 82
3-5. Adjustment of the pressure of the work
clamp unit ........................................................ 83
3-6. Adjustment of the wiper spring ...................... 83
4. OTHERS ..........................................................84
4-1. Installing the save button bar (accessory
part) .................................................................. 84
4-2. Model classication according to the
button size ....................................................... 84
4-3. Attaching the shank button (optional) ........... 85
III. DRAWING OF THE TABLE ................89
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