Setting The Upper Stop Position Of The Needle Bar - JUKI MF-7900 Series Engineer's Manual

(8) Setting the upper stop position of the needle bar

❸ ❹
❸ ❹
❸ ❹
Ⓐ
❺
❻
Ⓑ
❺ ❻
❷ ❶
Ⓑ
❺ ❻
– 164 –
1. Simultaneously pressing
❹ and switch ❺ , turn ON the
power switch.
is displayed ( Ⓐ ) in the indi-
2.
cator and the mode is changed over
to the adjustment mode.
3. Give the pulley of the machine head
a turn by hand. Then, the main shaft
reference signal is detected. The de-
gree of an angle given by the main
shaft reference signal is indicated
on display section Ⓑ with a blip.
(The value is the reference value.)
4. In this state, give the pulley of the
machine head another turn by hand
to align marker line ❶ on the hand
pulley with recess ❷ in the machine
frame as shown in the figure.
(Caution) The direction of rotation is
clockwise. If the pulley is
turned counterclockwise,
the degree of the aforemen-
tioned angle can differ by
approximately two degrees.
switch ❻ .
5. Press
(The value is the reference value.)
Take a note of the numeric value
shown on display section Ⓑ since it
is used for "(9) Setting the raveling
prevention parameter".
switch