Setting The Raveling Prevention Parameter - JUKI MF-7900 Series Engineer's Manual

(9) Setting the raveling prevention parameter

❶
Ⓒ
Ⓓ
❸ ❹
❷
(Caution) Be sure to re-turn ON the power switch when one or more seconds have passed after turn-
ing it OFF. If the power switch is re-turned ON immediately after turning it OFF, the sewing
machine may fail to operate normally. In such a case, be sure to turn ON the power switch
again properly.
❸ ❹
Example) The value shown on display section Ⓑ in 5. "(8) Setting the upper stop position of the needle bar" is 5.
The value displayed when the descending left needle tip is aligned with the center of the looper is
90. Subtract the former value 5 from the latter value 90. (i.e., 90 - 5 = 85)
switch ❺ or
Press
3. After completion of the changing procedure, press
ed value.
(Caution) If the power is turned OFF before carrying out this procedure, the changed content is not
updated. When
setting No. When
quent setting No. After completion of the operation, the machine is returned to the normal
sewing state by turning OFF the power and re-turning it ON.
Ⓐ
Ⓑ
❺ ❻ Ⓔ ❼
Ⓑ
❺
❻
switch ❻ to change the value shown on display section Ⓑ to 85.
switch ❸ is pressed, the display on the panel changes to the previous
switch ❹ is pressed, the display on the panel changes to the subse-
– 166 –
1. Turn ON the power with
switch ❼ held pressed.
(The item which has been changed
during the previous work is dis-
played.)
* If the screen display does not
change, re-carry out operation de-
scribed in step 1.
2. Press
❹ to set the setting number at 128.
The current set value is shown on
display section Ⓑ .
Press
❻ to lower the left needle until its
tip is aligned with the center of
the looper. At this time, read the
displayed value. Change the value
shown on display section Ⓑ to a
value which is obtained by sub-
tracting the value shown on display
section Ⓑ in 5. "(8) Setting the up-
per stop position of the needle bar"
from the aforementioned value.
switch ❸ or switch ❹ to confirm the updat-
switch ❸ or
switch
switch ❺ or
switch