Brother HE-800B Instruction Manual page 9

8. CLEANING ...........................................
8-1. Cleaning ......................................................... 61
8-2. Draining the oil................................................ 62
8-3. Cleaning the control box air inlet port............. 62
8-4. Cleaning the eye guard .................................. 63
8-5. Checking the needle....................................... 63
8-6. Cleaning the length feed plate........................ 63
9. STANDARD ADJUSTMENTS ..............
9-1. Adjusting the needle bar height...................... 64
9-2. Adjusting the needle and hook timing ............ 65
9-3. Adjusting the clearance between needle
and hook tip .................................................... 66
9-4. Adjusting the inner rotary hook and
rotary hook holder overlap.............................. 66
9-5. Adjusting the work clamp pressure ................ 66
9-6. Adjusting the cutter installation....................... 67
9-7. Adjusting the installation height of
the upper thread trimmer ................................ 68
9-8. Adjusting the upper thread trimmer
opening timing ................................................ 69
9-9. Adjusting the lower thread clamp timing......... 70
9-10. Adjusting the bobbin presser........................ 70
10. TABLE OF ERROR CODES...............
11. TROUBLESHOOTING........................
11-1. Upper thread breakage................................. 77
11-2. Skipped stitches ........................................... 78
11-3. Uneven seams (1) ......
At the sewing start..................................... 80
11-4. Uneven seams (2) ......
Lower thread is lifted up at
the sewing start ......................................... 81
11-5. Uneven seams (3) ......
Seam lifts up at the sewing start ............... 81
11-6. Uneven seams (4) ......
Uneven sewing pitch at the sewing start... 82
11-7. Uneven seams (5) ......
Poor rounding of seam................................. 82
11-8. Uneven seams (6) ......
61
Around rear tack or front tack ....................82
11-9. Uneven seams (7) ......
Loose thread end at end backtack ............82
11-10. Uneven seams (8) ......
Thread sticking out at end backtack ........83
11-11. Uneven seams (9) ......
Sticking in needle plate............................83
64 11-12. Uneven seams (10) ......
All stitches................................................84
11-13. Upper thread run out...................................85
11-14. Unraveling of thread trimmed by upper
thread trimmer assembly ............................87
11-15. Upper thread miss-trimming........................88
11-16. Needle strikes upper thread trimmer ..........89
11-17. Needle breakage.........................................90
11-18. Imperfect cutter function
(imperfect material cutting)..........................91
11-19. Cutter does not return .................................91
11-20. Cutter and upper thread trimmer touch.......92
11-21. Seam is cut .................................................92
11-22. Upper thread miss-winding .........................93
11-23. Work clamp is not raised (1) ......
Pulse motor stepping sound cannot
71
be heard......................................................93
11-24. Work clamp is not raised (2) ......
77
Pulse motor stepping sound can
be heard......................................................94
11-25. Lower thread is not trimmed
(pulls when material is removed)................95
11-26. Feed mechanism does not operate or
motor is out of step .....................................95
11-27. Needle does not zigzag or noise occurs
when needle zigzags ..................................96
11-28. Sewing machine stops during sewing.........96
11-29. Upper shaft does not rotate as far as
the needle up stop position.........................96
11-30. Operation panel display freezes and
operation is not possible.............................96
HE-800B