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Manuals
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JUKI Manuals
Sewing Machine
LK-1900B series
Engineer's manual
JUKI LK-1900B Series Engineer's Manual
Computer-controlled high-speed bartacking machine
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Also See for LK-1900B Series
:
Instruction manual
(110 pages)
,
Installing
(2 pages)
,
Specifications
(7 pages)
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
1 Specifications
2 Configuration
N Ames Of Main Unit
N Ames And Explanation Of Switches On The Operation Panel
3 Standard Adjustment Value
Main Shaft Connection/Disconnection
Removal of the Main Shaft Motor and Coupling
Crank Connecting Rod Connection/Disconnection
Crank Balancer Positioning
Lower Shaft Backlash Adjustment and Connection/Disconnection
Adjustment of Hook Oil Amount
Oscillator Gear Positioning
Adjustment the Height of the Needle Bar
Shuttle Connection/Disconnection and Oil Wick Piping
10) H Ook Adjustment
11) T Hread Trimmer Cam Position Adjustment And Connection/Disconnection
12) T Hread Trimmer/Work Clamp Foot Origin Sensor Adjustment
13) a Djustment Of The Height Of The Work Clamp Foot
14) a Djustment Of The Thread Trimmer Sensor
15) a Djustment Of The Moving Knife And Counter Knife Position
16) a Djustment Of The Height Of The Moving Knife And Counter Knife
17) I Nclination Of The Blade Point Of The Counter Knife
18) F Loating Amount Of The Thread Tension Disk
19) S Econd Thread Tension Connection/Disconnection
20) a T Unit Connection/Disconnection
21) P Osition Of The Mechanical Origin
22) a Djustment Of The Y Origin
23) a Djustment Of The X Origin
24) a Djustment Of The Wiper Position
( 25) a Djustment Of The Wiper Spring (LK-1903B, 1903BN)
(Adjustment Of The Backlash Of The Driving Gear)
27) I Nstalling The Feed Plate Support Plate
28) I Nstallation Of The Feeder Bar Rear Cover
29) a Djustment Of The Bobbin Winder Driving Wheel Position
30) a Djustment Of The Bobbin Winder Amount
( 31) a Djustment of the Shuttle Upper Spring Position ( Except for LK-1900B-BS, 1900B-BF, 1903B-BS, 1900BN-BS, 1900BN-BF and 1903BN-BS)
32) S Huttle Felt
33) S Hape Of The Inner Hook Presser
34) a Djustment Of The Thread Take-Up Spring
35) N Eedle Thread Clamp Device Connection/Disconnection
36) a Djustment Of The Needle Thread Clamp Reference Position
37) a Djustment Of The Needle Thread Clamp Notch
39) a Ssembling The Moving Knife Drive Section Of Shorter Thread Remaining
Assembling The Shorter Thread Remaining Unit
40) a Ssembling The Suction Pipe
( 41) a Djustment of the Shuttle Upper Spring Position (LK-1903B-BS, 1900B-BS, 1900B-BF, 1903BN-BS, 1900BN-BS, 1900BN-BF) and the Lower Thread Holder Position (LK-1903BN-BS)
42) B Obbin Case With An Idling Prevention Spring
500 D Escription Of The Functions
To Use the Functions of the Serviceperson Level
Contrast Adjustment
USB Format
K Ey Lock Setting
H Ow To Check The Version Infoemation
How to Use the Communication Function (Communication Functions Other than NFC)
Registering an NFC Terminal
Pattern Selection from the USB Thumb Drive
5 Memory Switches
Memory Switch Start and Change
Table of Memory Switch Functions
Supplement for the Memory Switch
6 Check Program
Starting the Check Program
Input Signal Check
X/Y Motor Origin Adjustment
Continuous Operation
Main Motor Rpm Check
Output Check
Work Clamp Foot/Thread Trimming Motor Origin Adjustment
Needle Thread Clamp Motor Origin Adjustment
7 Miscellaneous
Various Printed Wiring Boards
T Able Of Bar-Tacking Standard Pattern Specifications
Table of Standard Patterns
8 Sub-Class Information
M Odels Classified By Button Sizes (LK-1903B)
T Able Of Standard Patterns (LK-1903B)
Option (LK-1900BB, 1903BB, 1900BNB, 1903BNB)
9 Optional Features
Table of Optional Parts
Connection of the Optional Pedal
Connection of the Magnet Wiper (Cannot be Connected with LK-1901B)
Connection of the Pause Switch
Connection of the Marking Light
Connection of the Needle Cooler (Turns on While Machine Is Running)
Table of the Work Clamp Foot
10 Maintenance
Replacing the Fuse
Specification Changeover
Greasing Parts
Parts to Which Grease Is Applied
Grease-Up Procedures for the Specified Position
11 Error List
2. T Roubles And Corrective Measures
Mechanical Parts
Sewing Conditions
Electrical Components
B Lock Diagram_Standard Specification (MC-670)
Block Diagram_Lk-1900BB, 1903BB (MC-672)
Block Diagram_Nfc Type (MC-672)
Power Supply Circuit Diagram (Single-Phase)
13 Circuit Diagrams
P Ower Supply Circuit Diagram (Single-Phase Ce)
P Ower Supply Circuit Diagram (3-Phase)
S Ervo Motor Circuit Diagram
Stepping Motor Circuit Diagram
MAIN · Operation Panel Circuit Diagram
Machine Head Sensor Circuit Diagram
( 11) a Ir Circuit Diagram (LK-1900Bb And 1903Bb Only)
12) P Neumatic Circuit Diagram For Lk-1900BB
T Able Type For Longitudinal Installation
14 Table Drawings
T Able Type For Lateral Installation
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Error List
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Computer-controlled High-speed Bartacking Machine
LK-1900B Series
(LK-1900B, LK-1901B, LK-1902B, LK-1903B, LK-1900BB, LK-1903BB,
LK-1900BN, LK-1901BN, LK-1902BN, LK-1903BN, LK-1900BNB,
LK-1903BNB)
ENGINEER'S MANUAL
40145045
No. E414-03
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This manual is also suitable for:
Lk-1902b
Lk-1901b
Lk-1903b
Lk-1903bb
Lk-1900bb
Lk-1900bn
...
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Lk-1901bn
Lk-1902bn
Lk-1903bn
Lk-1903bnb
Lk-1900bnb
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