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FS-40
Brother FS-40 User Manual
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3 - 40
Needle-presser module
Application of Di
sassembly
17
Removal of Z zigzag lever assy
1.
Remove the Z lever cap
2
from the Z zigzag lever assy.
1
.
2.
Remove the retaining ring E4, and th
en remove the Z zigzag lever assy.
1
and the polyester slid
er
3
.
1
Retaining ring E4
2
3
18
Removal of Z zigzag cam
1.
Remove the retaining ring E3, a
nd then remo
ve the Z zigzag
cam
1
.
Retaining ring E3
1
19
Removal of Rubber
1.
Remove the rubber
1
.
1
86
88
Table of Contents
Table of Contents
4
1 Outline of Mechanism
10
Main Mechanisms
11
Driveline
12
Positions of Electronic Components
13
Control System Block Diagram
14
Operation of Other Electronic Components
15
2 Basics of Disassembly/Assembly
16
Disassembly Main Parts
17
Removal of Front Cover Assy
20
Electrical Parts and Motors
21
Needle Bar, Presser Mechanism / Upper Shaft Mechanism
25
Feed Mechanism
27
Bobbin Winder Mechanism
29
Assembly Bobbin Winder Mechanism
29
Attachment of Feed Module
34
Feed Mechanism
34
Needle Bar, Presser Mechanism / Upper Shaft Mechanism
35
Electrical Parts and Motors
39
6 Special Instructions of Wiring
42
Main Parts
44
Attachment of Front Cover Assy
45
Attachment of Base Cover
46
Attachment of Face Plate
46
Attachment of Needle Plate B Assy
46
Attachment of Accessory Table
47
3 Application of Disassembly/Assembly
48
Basic Configuration Is the same
48
NOTE: the Posting Pictures Are the "Square Shape Model
48
Disassembly Main Parts
49
Disassembly of Needle Plate B Assy
50
Disassembly of Front Cover Assy
51
Disassembly of Thread Tension Holder a Assy
51
Removal of Thread Tension Holder a Assy
51
Disassembly of Thread Take-Up Holder B
52
Removal of Thread Take-Up Holder B
52
Removal of LED Lamp Assy
53
Removal of SSVR PCB Assy
53
Removal of Ss/Reverse/Np Buttons
54
Removal of SV Keytop
54
Removal of Operation PCB Assy
55
Square Shape Model" Equipped with LCD Backlight
55
Square Shape Model" Not Equipped with LCD Backlight
55
Curvy Shape Model" Equipped with LCD Backlight
56
Curvy Shape Model" Not Equipped with LCD Backlight
56
Removal of Selecting/Manual Buttons
57
Removal of LCD
58
Square Shape Model" Equipped with LCD Backlight
58
Square Shape Model" Not Equipped with LCD Backlight
58
Curvy Shape Model" Equipped with LCD Backlight
59
Curvy Shape Model" Not Equipped with LCD Backlight
59
Removal of Decoration Cover
60
Removal of Front Cover Thread Guard
60
Removal of Thread Guide Wire
60
Removal of Base Plate Rubber (Front Cover Side)
61
Disassembly of Rear Cover Assy
61
Removal of Spool Pin
61
Removal of Bobbin Presser
62
Removal of Bobbin Winder Guide Assy
62
Removal of Spool Pin Holder
62
Removal of Thread Guide Supporting Plate
62
Disassembly of Cutter Cover Assy
63
Removal of Base Plate Rubber (Rear Cover Side)
63
Removal of Cutter Cover Assy
63
Removal of Thread Guide Plate Assy
63
Electrical Parts and Motors
64
Disassembly of Power Supply Unit
65
Disassembly of Main Motor Assy
65
Needle Bar, Presser Mechanism / Upper Shaft Mechanism
66
Disassembly of Tension Pulley Assy
67
Disassembly of Upper Shaft Assy
67
Removal of Plate Spring
67
Bobbin Winder Mechanism
68
Removal of Bobbin Base Assy
69
Disassembly of Bobbin Base Assy
69
Feed and Rotary Module
70
Removal of Feed Dog
71
Removal of Inner Rotary Hook Assy
71
Removal of Needle Plate a Assy
71
Disassembly of Needle Plate a Assy
71
Removal of FPM Holder Sub Assy
72
Removal of Spring
72
Removal of Inner Rotary Hook Bracket Assy
73
Removal of Outer Rotary Hook Assy
73
Removal of Spring
73
Removal of Z Pulse Motor
73
Removal of Feed Bar
74
Removal of Vertical Adjuster Screw Assy
74
Removal of Drop Knob
75
Removal of Feed Supporting Plate
76
Removal of Shaft Supporter
76
Removal of Timing Pulley D
76
Removal of Bushing Presser B
77
Removal of Upper Shaft Bushing
77
Removal of Feed Arm a Assy
78
Removal of Lower Shaft Assy
78
Removal of Feed Adjuster Assy
79
Disassembly of Feed Adjuster Assy
79
Needle-Presser Module
80
Removal of Feed Arm B Assy
79
Removal of Lead Wire Assy: Ground
81
Removal of Presser Feed Holder Assy
81
Removal of Thread Slider Guide
81
Removal of BH Switch Assy
82
Removal of Thread Take-Up Lever Link
82
Removal of Needle Bar Assy. N
83
Removal of Needle Bar Crank Rod Assy
83
Removal of Needle Bar Supporter Assy
84
Removal of Shaft Assy
84
Removal of Threader Hook Assembly
84
Removal of Needle Holder Shaft a
85
Removal of PF Switch Assy
85
Removal of Zigzag Adjusting Nut
85
Removal of Presser Bar
86
Removal of Presser Foot Lifter
86
Removal of Thread Release Lever
86
Removal of Rubber
87
Removal of Z Zigzag Cam
87
Removal of Z Zigzag Lever Assy
87
Removal of Lock Nut
88
Removal of Shaft Bushing
88
Assembly Main Parts
89
Removal of Z Pulse Motor
88
Assembly of Rear Cover Assy
90
Attachment of Base Plate Rubber (Rear Cover Side)
90
Attachment of Cutter Cover Assy
90
Assembly of Cutter Cover Assy
90
Attachment of Thread Guide Plate Assy
91
Attachment of Thread Guide Supporting Plate Assy
91
Attachment of Bobbin Winder Guide Assy
91
Attachment of Bobbin Presser
91
Attachment of Spool Pin Holder
92
Attachment of Spool Pin
93
Assembly of Front Cover Assy
94
Attachment of Base Plate Rubber (Front Cover Side)
94
Attachment of Thread Guide Wire
94
Attachment of Front Cover Thread Guard
94
Attachment of Decoration Cover
95
Attachment of LCD
96
Square Shape Model" Equipped with LCD Backlight
96
Square Shape Model" Not Equipped with LCD Backlight
96
Curvy Shape Model" Equipped with LCD Backlight
97
Curvy Shape Model" Not Equipped with LCD Backlight
97
Attachment of Selecting/Manual Buttons
98
Attachment of Operation PCB Assy
99
Square Shape Model" Equipped with LCD Backlight
99
Square Shape Model" Not Equipped with LCD Backlight
99
Curvy Shape Model" Equipped with LCD Backlight
100
Curvy Shape Model" Not Equipped with LCD Backlight
100
Attachment of SV Keytop
101
Attachment of Ss/Reverse/Np Buttons
101
Attachment of SSVR PCB Assy
102
Attachment of LED Lamp Assy
102
Attachment of Thread Take-Up Holder B
103
Assembly of Thread Take-Up Holder B
104
Attachment of Thread Tension Holder a Assy
105
Assembly of Thread Tension Holder a Assy
105
Assembly of Needle Plate B Assy
106
Electrical Parts and Motors
107
Assembly of Main Motor Assy
108
Assembly of Power Supply Unit
108
Needle Bar, Presser Mechanism / Upper Shaft Mechanism
109
Assembly of Tension Pulley Assy
110
Bobbin Winder Mechanism
111
Assembly of Upper Shaft Assy
110
Attachment of Plate Spring
110
Attachment of Bobbin Base Assy
112
Assembly of Bobbin Base Assy
112
Feed and Rotary Module
113
Attachment of Feed Adjuster Assy
114
Assembly of Feed Adjuster Assy
114
Attachment of Feed Arm a Assy
115
Attachment of Feed Arm B Assy
115
Attachment of Lower Shaft Assy
116
Attachment of Bushing Presser B
117
Attachment of Upper Shaft Bushing
117
Attachment of Feed Supporting Plate
118
Attachment of Timing Pulley D
118
Attachment of Shaft Supporter
119
Attachment of Drop Knob
120
Attachment of Vertical Adjuster Screw Assy
120
Attachment of Feed Bar
121
Attachment of Spring
121
Attachment of Outer Rotary Hook Assy
122
Attachment of Inner Rotary Hook Bracket Assy
122
Attachment of F Pulse Motor
122
Attachment of FPM Holder Sub Assy
123
Alignment of F Gear Teeth
124
Attachment of Spring
124
Attachment of Feed Dog
125
Attachment of Needle Plate a Assy
125
Assembly of Needle Plate a Assy
125
Attachment of Inner Rotary Hook Assy
126
Needle-Presser Module
127
Attachment of Lock Nut
128
Attachment of Shaft Bushing
128
Attachment of Z Pulse Motor
128
Attachment of Rubber
129
Attachment of Z Zigzag Cam
129
Attachment of Z Zigzag Lever Assy
130
Attachment of Presser Bar
131
Attachment of Thread Release Lever
131
Attachment of PF Switch Assy
132
Attachment of Presser Foot Lifter
132
Attachment of Needle Holder Shaft a
133
Attachment of Z Zigzag Adjusting Nut
133
Attachment of Needle Bar Supporter Assy
134
Attachment of Threader Hook Assembly
134
Attachment of Shaft Assy
135
Attachment of Needle Bar Assy. N
136
Attachment of Needle Bar Crank Rod Assy
137
Attachment of Thread Take-Up Lever Link
137
Attachment of BH Switch Assy
138
Attachment of Lead Wire Assy: Ground
138
Attachment of Thread Slider Guide
138
Attachment of Presser Feed Holder Assy
139
4 Adjustment
140
Starting Test Mode/Starting and Stopping Operation
141
Timing Belt Tension
143
Motor Belt Tension
144
Upper Thread Tension
145
Left Base Line Needle Drop
146
Rotary Hook Unit Position
147
Needle Clearance Left/Right
148
Needle Bar Rising
149
Needle Bar Height
150
Clearance between Needle and Rotary Hook Point
151
Needle Threader
152
Presser Bar Height and Parallelism
153
Feed Forward/Backward
154
Bobbin Winder
155
BH Lever Switch Position
156
Needle and Presser Foot Front/Back Position
157
Front/Back and Left/Right Position of Feed Dog
158
Feed Dog Height
159
Inner Rotary Hook Bracket Position
160
Inner Rotary Hook Assy. (Lower Thread) Tension
161
5 Failure Investigation for Electronic Parts
162
Error Message List
163
Error Message Is Displayed
164
Power Does Not Come on
168
Pulse Motor Does Not Return to Initial Position
169
Pattern Cannot be Selected
170
Main Motor Does Not Rotate
171
Main Motor Rotation Is Not Normal
173
Pattern Cannot be Sewn Correctly
174
Button Hole Cannot be Sewn Correctly
175
Operation Button Does Not Work
176
Does Not Operate When the Foot Controller Is Used
177
Bobbin Thread Cannot be Wound on the Bobbin
178
LED Lamp Does Not Light
179
LCD Is Not Normal
180
Buzzer Does Not Sound
181
Special Instructions of Wiring
182
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Brother FS-40 Specifications
General
Brand
Brother
Model
FS-40
Category
Sewing Machine
Language
English
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