Mechanical Section - Brother BE-1204B Instruction Manual
12 needle embroidery machine stand-alone type
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Also See for BE-1204B:
- Instruction manual (262 pages) ,
- Maintenance schedule (9 pages) ,
- Supplement manual (2 pages)
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Chapter 10 Troubleshooting
Mechanical Section
Problem
! Thread breakage
! Needle (presser foot) interference
with embroidery hoop
! Needle breakage
! Not embroidered properly
! Machine operation abnormal
10-2
• Is the machine properly threaded?
• Is thread tension too high?
• Is the rotary hook assembly clogged?
• Is there thread in the bobbin?
• Is the needle bent?
• Is there a rough edge or flaw on the needle plate, rotary hook, or
bobbin case that might cut the thread?
• Is the needle installed correctly (direction, angle, etc.)
• Is the presser foot in contact with the material?
• Are the thread thickness and needle size correct?
• Is a thread with right-hand twist being used? (If such a thread is
used, replace with a thread with left-hand twist.)
• Is there any adhesive on the needle?
• Is the material tension too weak?
• Is there too much play between the outer rotary hook and inner
rotary hook?
• Does the outer rotary hook turn smoothly?
• Is the clearance between the rotary hook stopper and the rotary
hook adjusted correctly?
• Does the thread come out from the bobbin case smoothly?
• Is the embroidery hoop too small?
• Check the size and needle start position in the sewing data.
• Is the needle attached correctly (direction, height, etc.)?
• Is the needle bent?
• Is the rotary hook attached correctly?
• Is the timing set correctly?
• Is there any backlash with the needle bar case (back/forth and
right/left)?
• Is the rotary hook stopper correctly attached to stop the rotary
hook?
• Is the needle size correct and the tip sharp?
• Does the thread pass through the hole center of the presser
foot?
• Is the material edge caught in the machine?
(Are embroidery hoop and other related parts operating
correctly?)
• Is the material stretched properly?
• Is thread tension proper?
Does the lower thread come out smoothly?
• Is embroidery data normal?
• Is the XY carriage belt loosened?
• Is the XY carriage belt damaged?
• Are any set screws for the XY drive pulley loosened?
• Are any fixing screws for the coupling of the Y drive shaft
loosened?
BE-1204B-BC • BE-1206B-BC
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