JUKI AMS-221EN Series Engineer's Manual page 75

1. Push the needle thread clamp device
the hinge screw .
2. Attain the test mode I08.
3. Try to tread on the pedal for origin retrieval.
4. Keep pressing the [+] key and move the needle thread clamp release plate
At that time, confirm 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 sensor behind (in the direction of the arrow A)
according to [(41) Adjusting the needle thread clamp sensor] and make readjustment from [3.] above.
5. Confirm that the distance between the needle thread clamp release plate
A:2±0.2mm and B:2±0.2mm, respectively.
6. If the distance seems to be inadequate, loosen the three set screws
device for adjustment.
(Caution) For the prevention of injury, the distance should be checked in the Test Mode I08.
7. After the completion of the above-mentioned reassembly, make adjustments according to "(49) Adjusting the
needle thread clamp sensor."
Procedures of assembling
in the direction of A and fix it with the three set screws
±
B : 2 0.2mm
– 71 –
to the most advanced position.
and the needle center
and move the needle thread clamp
. Tighten
is