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Brother JS1420 User Manual

Brother JS1420
151 pages
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MODEL :
J14/LS14/LX-1400/X14/L14/STAR1400
JS1400/JS1410/J17/LS17/LX-1700
X17/L17/JS1700/AS1430S/JSL15/JSL18/LS200
LS300/artwork19/artwork22/SL10/HQ18/X7/JX1410
JX1710/JX2517/AS1450/RS100/RS200/JX1400
JS1420/LS2225/LS2325/SL100/VitrageM71
VitrageM73/ArtCity140/JS1750/NB1400/NB1700
KD144/K14/F14/K17/F17/KE14/ArtCity170
Home Sewing Machine
SERVICE MANUAL
Aug.,2012
May,2015
Published :
Revised :
c
2012 Brother Industries, Ltd.
All rights reserved.
CONFIDENTIAL

Table of Contents

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Brother JS1420 Specifications

General IconGeneral
BrandBrother
ModelJS1420
CategorySewing Machine
LanguageEnglish

Summary

Home Sewing Machine Service Manual

Basic of Disassembly/Assembly

Application of Disassembly/Assembly

Adjustment

Timing belt tension

Procedure for adjusting the timing belt tension.

Motor belt tension

Procedure for adjusting the motor belt tension.

Needle plate holder assy position

Adjusting the position of the needle plate holder assembly.

Presser foot hole / Needle plate hole position (front/back)

Aligning presser foot and needle plate holes in the front/back direction.

Needle swing timing

Adjusting the timing of the needle's swing motion.

Three point needle drop

Adjusting the needle drop position for accurate stitching.

Needle interference left/right

Adjusting the needle to prevent left/right interference.

Needle bar rising

Adjusting the needle bar's vertical movement.

Upper thread tension

Procedure for adjusting the upper thread tension.

Lower thread tension

Procedure for adjusting the lower thread tension.

Failure Investigation for Electronic Parts

Main motor does not turn or Rotation speed is slow

Troubleshooting steps for motor issues.

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