JUKI LZ-2290C-F Instruction Manual page 137

4) Place the multi-layered section of material under the presser foot, and press  .

<Multi-layered section changeover function ON
sensor value teaching screen>
The value of  is automatically calculated, and that value becomes the "threshold" for the multi-layered
section detection. The value is adjustable with
If the "threshold" is decreased, the multi-layered section can be detected earlier. Be aware that,
excessively decreased threshold can cause a faulty detection.
 is pressed, the "multi-layered section changeover function ON sensor value screen" is
When
displayed.
<Multi-layered section changeover function ON
sensor value screen>
 

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according to the sewing item.
Check that the "threshold" you have set is en-
tered. Then, press
setting. Note that the "threshold" can be directly
entered or corrected on this screen.
MAX : 3000
MIN : 1000
The initial value of "threshold" for
the multi-layered section detection
is a rough indication. The threshold
should be finely adjusted according
to the actual sewing conditions such
as the item to be sewn.
 again to confirm the