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4) CP-4 (Main motor rpm check)
Used to set up the sewing machine rpm. Only the main motor is driven at the preset rpm and the actually
measured rpm number is displayed.
1. Preparation
At first, press the key to start origin retrieval for needle thread clamp and work clamp foot/thread trimmer
motors.
After the completion of preparation, the sewing LED is turn on.
2. Operation
When the key is pressed, sewing machine operation stops.
The preset rpm number or the actually measured rpm number is
displayed. Changeover is possible by pressing the key.
Using the and keys, it is possible to change the rpm
number within the range of 400 ~ 3000rpm. This setting is pos-
sible even when the machine is presently driven.
Using the key, the rpm display can be changed over be-
tween preset rpm and actual rpm.
5) CP-5 (Output check)
Output check is carried out for the material drawing magnet of the LK1901A.
1. Operation
While the key is pressed, the material drawing magnet ON output is generated.
When the key is pressed, the sewing machine motor
begins to run at the preset rpm. If the rpm setting is changed on
sewing machine operation, speed change is possible to the pre-
set rpm by pressing the key.
The speed LED is turn off when the displayed rpm is maintained at
the preset figure. It is turn on when the actually measured figure is
displayed. Changeover is possible by pressing the key.
Summary of Contents for LK-1900A
Page 20: ... 16 10 Hook adjustment Standard Adjustment 0mm 0mm 7 5mm 0 05 0 1mm For DPX5 For DPX17 ...
Page 90: ... 86 Grease Grease Grease Grease Grease 8 Needle thread clamp mechanism area ...
Page 91: ... 87 Grease Grease A Grease Grease Grease Grease 9 LK 1901A relations ...
Page 92: ... 88 10 LK 1903A relations Grease Grease ...
Page 114: ... 111 12 Circuit diagrams 1 Block diagram A ...
Page 115: ... 112 2 Power supply circuit diagram A ...
Page 116: ... 113 3 Power supply circuit diagram B ...
Page 117: ... 114 4 Power supply circuit diagram C ...
Page 118: ... 115 5 Servo motor circuit diagram ...
Page 119: ... 116 6 Sensor pedal VR circuit diagram ...
Page 120: ... 117 7 MAIN PANEL board circuit diagram ...
Page 121: ... 118 8 Motor solenoid circuit diagram Thread trimmer Lifting the work clamp foot motor ...