Adjust The Upper Thread Feeding Device; Adjust The Height Of The Needle Bar - Brother LZ2-B855E Service Manual

Electronic single needle zigzag lock stitcher electronic single needle zigzag lock stitcher with thread trimmer

Hide thumbs Also See for LZ2-B855E:

Service manual (93 pages)

Specifications (8 pages)

Instruction manual (222 pages)

Table Of Contents

Table of Contents

Problem

11. Broken needles

12. Incorrect thread trimming

(upper and lower threads

are both not being

trimmed). (B856E)

13. Incorrect thread trimming

(upper thread or lower

thread is not being

trimmed). (B856E)

14. The thread wiper does not

wipe the thread.

(B856E-40|, 90|)

Problem

15. Operation panel keys do

not operate.

• 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.

Caution

• 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.

0469M

• 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.

• 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".

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

after thread trimming?