JUKI LK-1900A Series User Manual

5. Memory switches .................................................................................................. 52
(1) Memory switch start and change .......................................................................................... 52
(2) Table of memory switch functions ........................................................................................ 53
6. Test mode .............................................................................................................. 57
(1) Test mode start........................................................................................................................ 57
(2) Display output test .................................................................................................................. 58
(3) Method of confirmation according to each test program No. ............................................ 59
7. Miscellaneous........................................................................................................ 64
(1) Various printed wiring boards ...............................................................................................64
(2) LK1900 data ROM.................................................................................................................... 71
(3) Dipswitch setting .................................................................................................................... 71
(4) Table of standard pattern specifications .............................................................................. 72
(5) Table of standard patterns ..................................................................................................... 73
8. Optional features................................................................................................... 75
(1) Connection of PK-57 ............................................................................................................... 75
(2) Table of optional parts ............................................................................................................ 76
(3) Table of the work clamp foot.................................................................................................. 78
9. Maintenance .......................................................................................................... 80
(1) Replacing the fuse .................................................................................................................. 80
(2) 100V
↔↔
↔↔
↔ 200V voltage specification changeover .................................................................. 80
(3) Greasing parts ......................................................................................................................... 81
(4) Parts to which grease is applied ........................................................................................... 82
(5) Grease-up procedures for the specified position ................................................................ 89
10. Table of errors ..................................................................................................... 90
11. Troubles and corrective measures .................................................................... 93
(1) Mechanical parts ..................................................................................................................... 93
(2) Sewing conditions .................................................................................................................. 95
(3) Electrical components .......................................................................................................... 103
12. Circuit diagrams.................................................................................................111
(1) Block diagram A .....................................................................................................................111
(2) Power supply circuit diagram A........................................................................................... 112
(3) Power supply circuit diagram B .......................................................................................... 113
(4) Power supply circuit diagram C .......................................................................................... 114
(5) Servo motor circuit diagram ................................................................................................ 115
(6) Sensor – pedal VR circuit diagram ...................................................................................... 116
(7) MAIN • PANEL board circuit diagram .................................................................................. 117
(8) Motor • solenoid circuit diagram ......................................................................................... 118
13. Table drawings .................................................................................................. 119
(1) Table type for longitudinal Installation ............................................................................... 119
(2) Table type for lateral Installation ......................................................................................... 120

JUKI LK-1900A Series Specifications

General

Stitch Type	Lockstitch
Max Sewing Speed	3, 000 sti/min
Power Consumption	550W
Needle Bar Stroke	41.2 mm
Needle Type	DP×5
Number of Patterns	50 standard patterns
Sewing Area	30mm x 40mm
Lubrication	Automatic lubrication
Presser Foot Lift	17mm (max)