Needle Breakage; Entanglement Of Upper Thread With The Thread Nipper (Ke-430Hx); Feed Mechanism Does Not Move And Go Out Of Step - Brother KE-430HX Service Manual

Electronic direct drive lockstitch bar tacker electronic direct drive lockstitch button sewer
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13. TROUBLESHOOTING
13-10

. Needle breakage

Items with a "*" in the "Page" column should only be handled by a qualified technician.
Cause
Needle
Hook
Needle plate
Thread wiper
13-11

. Entanglement of upper thread with the thread nipper (KE-430HX)

Items with a "*" in the "Page" column should only be handled by a qualified technician.
Cause
Sub-tension
13-12

. Feed mechanism does not move and go out of step

Items with a "*" in the "Page" column should only be handled by a qualified technician.
Cause
Feed motor
Feed motor home
position
Home position sensor
of feed motor
(When using the
optional expansion
area kit)
179
Check
Needle facing
Needle installation height
Bent needle
Blunt needle tip or burr
Needle and thread
Button position
(BE-438HX/HS)
Needle bar height and needle
bar lift amount
The clearance between the
needle and the tip of the hook
Installation position of the
needle plate
Thread wiper height
Check
Upper thread at the sewing
start is long.
Check
Cord connections
Incorrect feed home position
Position of the home position
sensor of feed motor
KE-430HX/KE-430HS, BE-438HX/BE-438HS
Remedy
Attach the needle so that the long groove on the
needle is at the front.
Insert the end of the needle shank so that it touches
the top edge of the needle hole of the needle bar.
Replace needle.
Replace needle.
Replace with a needle suitable for the thread.
Check that the needle is not touching the button.
Adjust the needle bar height.
Adjust the needle and hook timing.
Adjust so that the clearance between the needle and
the tip of the shuttle hook is 0.01 - 0.08 mm. (Make as
large as possible to the extent the skipped stitches will
not occur.)
* Check that the needle and the tip of the shuttle hook
do not touch while moving the needle bar back and
forth with your finger.
Adjust the position of the needle plate back and forth
so that the needle is aligned with the center of the
needle hole.
・ Adjust the height of the thread wiper so that the work
clamp does not press the thread.
・ Adjust so that the needle and thread wiper do not
interfere with each other.
Remedy
Turn the tension nut to adjust the upper thread trailing
length to 35 - 40 mm.
Remedy
Check if there are any problems with the connection
and contact of the feed motor connector on the side
face of the control box.
Adjust the home positions of the X-feed and Y-feed
pulse motors respectively.
Adjust the position of the home position sensor of the
feed motor.
Page
Instruction
manual
132
141
135*
136*
*
142*
Page
Instruction
manual
Page
*
148*
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Troubleshooting

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This manual is also suitable for:

Ke-430hsBe-438hsBe-438hx

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