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Procedures of assembling and adjustment procedures
1. Push the needle thread clamp device
❸
in the direction of A and x it with the three (LK-1900BB,
1903BB, 1900BNB, 1903BNB : four) setscrews
❷
. Tighten the hinge screw
❶
.
2. Attain "07 Needle thread clamp motor origin adjustment" of the check program.
3. Try to tread on the pedal for origin retrieval.
4. Keep pressing the [+] key and move the needle thread clamp release plate
❹
to the most advanced
position.
At that time, conrm that the needle thread clamp motor does not suffer from step-out (position shift).
If step-out should occur, slightly move the needle thread clamp device
❸
behind (in the direction of the
arrow A) and make readjustment from step "3." above.
5. Conrm that the distance between the needle thread clamp release plate
❹
and center of the needle
❺
is A : 2 ± 0.2 mm and B : 2 ± 0.2 mm (LK-1900BB, 1903BB, 1900BNB, 1903BNB → A : 2 ± 0.3 mm, B :
2 ± 0.5 mm), respectively.
6. If the distance seems to be inadequate, loosen the three setscrews
❷
and move the needle thread
clamp device
❸
for adjustment.
(Caution) For the prevention of injury, the distance should be checked in the check program 07.
7. After the completion of the above-mentioned reassembly, make adjustments according to "3.-(36) Ad-
justment of the needle thread clamp reference position".
B : 2 ± 0.5 mm
A : 2 ± 0.3 mm
❺
❹
[LK-1900BB, 1903BB (Short tail application]]
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