P1
P2
P3
P4
P5
– 145 –
4) CP-4 (Main motor rpm check)
Set up the rpm number of the sewing machine, drive only the main motor of the sewing machine at the preset
rpm level, and display the measured rpm number.
1. READY operation
In the first place, press the key for the origin retrieval of the needle thread clamp and the presser and thread
trimmer motor. After operation for preparation, the sewing LED is lit.
2. Operation
When the key is pressed, the sewing machine is
actuated at the preset rpm level.
If the rpm number is changed in the middle of sewing
machine operation, the speed can be changed by press-
ing the key.
When the key is pressed, the sewing machine
stops.
The preset rpm number or the actually measured rpm
number is displayed. Changeover is possible by press-
ing the key.
Using the and keys, the rpm number can be
preset within the range of 400 to 2700 rpm. This setting
is possible even in the middle of sewing machine opera-
tion.
The speed LED is unlit while the preset rpm number is
displayed, and is lit while the measured number is dis-
played. Changeover can be made by pressing the
key.
With the key, the speed display can be changed
over between the preset and the measured rpm num-
ber.