3. Description of the Function Keys
3.1 Selecting and Adjusting the Seam Length
Three stored seam lengths can be selected via the L1, L2 and L3
keys. A change in the seam length can only be made before starting
the feed procedure.
–
Select the stored seam length by pressing the L1, L2 or L3 key.
The selected seam length is shown in the right half of the first line
of the display.
–
If "L?" appears in the display a seam length was selected under
which no valid value is stored.
Enter a valid value via the " + " or " - " key or select another seam
length.
–
Change the set seam length with the " + " or " - " key.
–
Press the function key (L1, L2 or L3).
The set seam length is stored.
It remains in the memory until it is changed again.
3.2 Controlling the Seam Length via Light Barrier
The light barrier is turned on by pressing this key.
The light barrier recognizes the end of the cloth.
–
Press the key.
The symbol "LX" appears in the display in place of the seam
lengths L1, L2, L3.
–
To turn off the light barrier press one of the L1, L2 or L3 keys.
3.3 Programming Mode
The programming mode is activated by pressing this key.
–
Press the " P " key for 3 seconds.
The program position and the values to be changed appear in the
display.
With the "
Σ
" key the individual, alterable parameters are called
up consecutively.
–
Press the " P " key.
The programming mode is ended.
The sewing unit is ready for sewing.
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Summary of Contents for class 743-221
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