– 3 –
Item selection LED
LEDs of the selected items light up.
Needle thread clamp ON/OFF key
This key selects effective/ineffective of needle thread
clamp. When it is effective, needle thread clamp
disply LED lights up. (Note) 1.
Needle thread clamp display LED
When this LED lights up, needle threas clamp
operaters.
Pattern registration key
This key registers the pattern. When this key is
pressed, the pattern registered here can sew imme-
diately.
X/Y scale, sewing position, ets. can be changed and
registered.
Pattern No. X scale Y scale
Max. speed Sewing counter Bobbin winder
limitation
Work clamp foot Thread tension
lowering
(2) Names and explanation of switches on the operation panel
“Ready” key
This key changes over the setting state from the panel
to the sewing state where the sewing machine actu-
ally operates.
Sewing LED
This LED goes off at the time of setting state and
lights up at the time of sewing state. Changeover
can be performed with “Ready” key.
“Reset” key
This key is used for canceling error or returning the
set value to the initial value.
“Mode” key
This key makes the setting mode of the memory
switch.
“+ / Feed forward” key, and “- / Feed backward”
key
This key is used for changing pattern No. and X/Y
scale, and feed forward/feed backward.
“Selection” key
This key selects the item to be set. Item selection
LED of the selected item and the set value are dis-
played.
Data indication LED
This LED indicates the set values of the selected
items such as pattern No., X/Y scale, etc.
(Note) 1. LK-1903A is set to needle thread clamp prohibited (no motion) with memory switch No. 35 at the
time of standard delivery.
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