Service Manual
Original issue
May 2014
Page
58/64
Model
XL-420
| 58
No.
Name of al
code
Way of detect
Solution
14
Problem in
Hoop
movement
(hoop moved
with needle at
bottom
position)
Needle position became lower position before
hoop motion has completely end at embroidery
mode.
The embroidery data is
broken.
15
Trouble of
operation
board.
Any button of START/STOP, FORWARD
STICTH, REVERSE STITCH or AUTOMATIC
THREAD TRIMING is pressed more than
5seconds when turning on the sewing machine.
Switch button has been
stiffened and pressed.
It is need to check
button.
16
nil
17
Trouble of
PWM output
If exceed amount of electric current has followed
to bobbin winder motor more than 50ms out of
250ms at condition of PWM output is off and
connecting to protection relay while main power
is on.
Replace CPU board is
needed.
Trouble of
main shaft
stop (detected
it is moving
even though it
should be
stopped.)
If exceed amount of electric current has followed
to bobbin winder motor within 200rms while main
bobbin winder motor is turned on.
Replace CPU board is
needed.
Trouble of
loading
current
Regardless of motor turned on or off, if exceed
amount of electric current has followed to bobbin
winder motor for more than 3seconds.
Replace CPU board is
needed.
SEC.25-5 Trouble contents on display (5)