4 - 10
Adjustment (Main Unit)
Three point needle drop adjustment
1. Remove the front cover, and turn on the power while pushing SW1 and SW3 on the main PCB assy. (the buzzer
sounds four times and test mode starts)
*See (4 - 4 "Test Mode") for starting test mode with the front cover in place.
2. Press SW5 (with the front cover in place, press
twice and select
and press
), and select "3 point
drop mode." (with each push of SW5 or
, the needle bar switches left base line / center base line / right base
line).
3. Turn the pulley by hand, and insert the tip of the needle into the needle hole.
4. Loosen the screw (3X10).
5. Adjust the zigzag adjusting nut so that the left base line / center base line / right base needle drop is uniform to the
left and right of the needle plate A needle hole.
6. Tighten the screw (3X10).
17
3
Summary of Contents for BLMY
Page 1: ......
Page 2: ......
Page 3: ......
Page 19: ...1 8 ...
Page 21: ...2 2 Main parts location diagram Main unit ...
Page 30: ...2 11 Disassembly Electrical parts and motors location diagram Main unit ...
Page 37: ...2 18 Thread tension mechanism location diagram Main unit ...
Page 43: ...2 24 Bobbin winder mechanism location diagram Main unit ...
Page 49: ...2 30 Needle bar presser mechanism Upper shaft mechanism location diagram Main unit ...
Page 53: ...2 34 Needle presser module breakout diagram 78 Modules ...
Page 66: ...2 47 Disassembly Feed and bobbin module breakout diagram Modules ...
Page 75: ...2 56 Thread cutter module breakout diagram Modules ...
Page 79: ...2 60 ...
Page 81: ...3 2 Needle bar presser mechanism upper shaft mechanism location diagram Main unit ...
Page 90: ...3 11 Assembly Bobbin winder mechanism location diagram Main unit ...
Page 94: ...3 15 Assembly Thread tension mechanism location diagram Main unit ...
Page 102: ...3 23 Assembly Electrical parts and motors location diagram Main unit ...
Page 109: ...3 30 Main parts location diagram Main unit ...
Page 120: ...3 41 Assembly Needle presser module breakout diagram 78 Modules ...
Page 139: ...3 60 Feed module breakout diagram Modules ...
Page 155: ...3 76 Thread cutter module breakout diagram Modules ...
Page 161: ...3 82 ...
Page 191: ...4 30 ...
Page 226: ......