Brother LK3-B438E MKII Benutzeranleitung

ZE-8570,8580

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48

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Caution

11. Broken needles

• Is the material being pushed or pulled with excessive force dur-

ing sewing?

• Is the needle properly installed?

If it is incorrect, install the needle correctly.

• Is the needle bent, is the needle tip broken, or is the needle hole

blocked?
Replace the needle.

• Is the needle and rotary hook timing incorrect?

Adjust the height of the needle bar.
Adjust the clearance between the needle and the rotary hook.

• It is extremely dangerous to leave any pieces of broken

needle sticking in the material. If the needle breaks, search
for all pieces until the whole of the needle is found again.

• Furthermore, we recommend that through steps be taken to

account for such needles to comply with product liability
regulations.

12. Incorrect thread trimming

(upper and lower threads
are both not being
trimmed). (ZE-8580)

• Is the fixed knife or movable knife damaged or worn?

Replace the fixed knife or the movable knife.

• Is the thread trimming timing correct?

Adjust the rotating direction of the thread trimming cam.

13. Incorrect thread trimming

(upper thread or lower
thread is not being
trimmed). (ZE-8580)

• Is the neelde properly installed?

If it is incorrect, install the needle correclty.

• Is the fixed knife or movable knife blunt?

Replace the fixed knife or the movable knife.

• Do skipped stitches occur during sewing?

Refer to “Skipped stitches during sewing”.

14. The thread wiper does not

wipe the thread.
(ZE-8580-401, 901)

• Is the length of thread trailing from the needle hole too long

after thread trimming?
Adjust the upper thread feeding device.

1. Operation panel keys do

not operate.

• Is 

AA AA

 appearing in the LED display?

If this display appears, key operation has been locked because
of a DIP switch setting, so the keys cannot be operated.
When DIP switch 2-8 is set to OFF, the lock is released.

• Is the LOCK key indicator illuminated?

If the indicator is illuminated, the key operation has been locked
by the LOCK key, so key operation is not possible.
Press the LOCK key for 2 seconds or more to cancel the lock.

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148

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