JUKI LK-1900B series, Руководство инженера

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(11) Thread trimmer cam position adjustment and connection/disconnection
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Procedures of disassembling
1. Loosen the two setscrews ❷ of the thread trimmer cam (cam hereafter) ❶ .
2. Loosen the two setscrews ❹ and remove the sensor slit ❸ .
3. Remove the four setscrews ❺ and take out the work clamp foot lifting motor ❻ in the direction of the
arrow. In some cases, the bearing ❼ and the motor shaft seem to be tightly coupled. Pull out the motor
shaft in the direction of the arrow straightforward in order not to hurt the bearing ❼ .
At that time, the cam ❶ may come down. Handle it with care, not to damage it.
(12) Thread trimmer/work clamp foot origin sensor adjustment
WARNING :
As the work is performed while the power is ON, never touch the switches other than the necessary
one so as to prevent accidents caused by the malfunction of switches.
Standard adjustment
In the state of origin retrieval (Start Switch ON) in the check program 06, the standard holes A and B of
the sewing machine frame come to coincide with the standard hole
C
of the thread trimmer/work clamp
foot lifter cam ❶ .