Jack JK-T781D User Manual (English)

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Jack JK-T781D Specifications

General

Max Stitch Length	5mm
Lubrication	Automatic
Speed	Adjustable
Voltage	220V
Max Sewing Speed	5000 SPM
Needle	DBx1
Stitch Options	Lockstitch
Presser Feet	Standard

Summary

Warning and Safety Instructions

1. Installation and Usage Precautions

Essential guidelines for safe installation, operation, and handling of the sewing machine.

2. General Safety Instructions

Key safety instructions to follow for proper and safe machine operation.

3. Staff Training Requirement

4. Power Socket Safety

5. Voltage Connection Safety

Caution regarding connecting to correct voltage sockets to prevent damage.

6. Environmental Conditions

7. Humidity and Condensation Control

10. Ground Wire Connection

12. Power Off Conditions

Situations requiring the power to be switched off before performing actions.

15. Product Handling Warnings

Guaranteed Period

1: INSTRUCTIONS

1.1 KEY DESCRIPTION

Explanation of the machine's control panel buttons and their functions.

1.2 OPERATIONAL

1.3 ENTER THE TECHNICIAN MODE

1.4 DIGITAL TYPE OPERATION

2: USER PARAMETER & TECHNICIAN PARAMETER

2.1 USER PARAMETER

Details on user-configurable parameters, their ranges, and default settings.

2.2 TECHNICIAN PARAMETER

Technical parameters for advanced settings, including ranges and default values.

3: ERROR CODES TABLE

4: PORT SCHEMATIC DIAGRAM

5: INSTALLATION INSTRUCTIONS

5.1 SPEED CONTROL PEDAL PULL ADJUSTMENT

5.2 INTEGRATED ELECTRONIC CONTROL INSTALLATION INSTRUCTIONS

6: SPECIFICATION

7: TYPES OF STITCHES

8: SETTING UP THE MACHINE HEAD

9: ATTACHING THE BOBBIN

10: INSTALLATION/REMOVAL OF BOBBIN CASE

11: HOW TO INSTALL THE NEEDLE

12: SETTING UP THE THREAD STAND

13: LUBRICATION

Adjusting the lubrication for the sewing hook

14: WINDING THE BOBBIN

15: THREADING THE NEEDLE-THREAD

16: MANUAL FEED HANDLE

17: HOW TO HOLD THE DESCENDING KNIFE

18: CHANGING THE NUMBER OF STITCHES

19: NEEDLE-TO-HOOK RELATION

20: THREAD TENSION

21: ADJUSTING THE OVEREDGING LENGTH (BUTTONHOLE LENGTH)

22: ADJUSTING THE OVEREDGING WIDTH AND OVEREDGING REFERENCE POSITION

23: ADJUSTING THE PRESSER BAR PRESSURE

24: REPLACING THE KNIFE

25: ADJUSTMENT OF THE NEEDLE THREAD TRIMMER

26: ADJUSTMENT OF NEEDLE THREAD TRIMMER HOLDER AND LIMITING PLATE

27: TIMING FOR DROPPING THE KNIFE

28: STITCHING TROUBLES CAUSED BY OTHER REASONS

29: TROUBLE, CAUSE, AND REMEDY