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BAS-342G
Brother BAS-342G Service Manual
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8. ELECTRICAL MECHAN
ISM
11
2
BAS-342G
8-4. Description of connectors
A
large number of problems are often caused by connectors that are not inserted correctly or which are contacting poorly
.
As a result, check that all connectors are inserted correc
tly and that the pins and wires are crimped properly before carrying
out problem diagnosis.
8-4-1. Connector positions
Main P.C. board
5072Q
120
122
Table of Contents
Safety Instructions
3
Maintenance and Inspection
5
Specifications
10
Function Settings
11
List of Advanced Functions
12
Memory Switch Setting Method (Advanced)
13
List of Memory Switch Settings
14
Stitch Counter Checking Method
24
Error History Checking Method
25
Input Checking Method
26
Output Checking Method
29
Software Version Checking Method
31
Reading / Writing Data
32
Notes on Handling CF Cards (Sold Separately)
33
Data Read/Write Mode
34
Reading Sewing Data from CF Cards
35
Writing Sewing Data to CF Cards
36
Reading Memory Switch Data from CF Cards
37
Reading User Program Data from CF Cards
38
Updating the Control Program
39
Writing Error Log Data to CF Card
40
Writing Sewing Data to Floppy Disks
41
Reading Extended Option Output Data from a CF Card
42
Writing Extended Option Output Data to CF Cards
43
Mechanical Descriptions
44
Work Clamp Lifter Mechanism
45
Intermittent Presser Foot Stroke Mechanism
46
Feed Mechanism
47
Thread Trimmer Mechanism
48
Tension Release Mechanism
49
Disassembly
50
Thread Wiper Mechanism
51
Work Clamp Arm Mechanism
52
Intermittent Presser Foot Lifter Mechanism (1)
53
Needle Bar Mechanism
54
Upper Shaft Mechanism
55
Lower Shaft Mechanism
56
Feed Covers
57
Feed Mechanism
58
Work Clamp Lifter Mechanism
60
Tension Release Mechanism
61
Thread Trimmer Mechanism
62
Shuttle Hook Mechanism
63
Assembly
64
Intermittent Presser Foot Lifter Mechanism (1)
66
Work Clamp Lifter Mechanism
67
Feed Mechanism
69
X-Feed Mechanism
74
Feed Covers
79
Upper Shaft Mechanism
81
Needle Bar Mechanism
83
Intermittent Presser Foot Lifter Mechanism (2)
85
Lower Shaft Mechanism
87
Shuttle Hook Mechanism
89
Work Clamp Arm Mechanism
90
Adjusting the Lift of the Work Clamp Arm Assembly
91
Thread Wiper Mechanism
92
Covers
93
Adjustment
94
Standard Thread Tension
95
Thread Take-Up Spring
96
Adjusting the Needle Bar Height
97
Adjusting the Needle Clearance
98
Adjusting the Rotary Hook Lubrication Amount
99
Adjusting the Position of the Movable Knife
100
Replacing the Movable and Fixed Knives
102
Installing the Feed Plate
103
Presser Foot Installation Position
104
Adjusting the Work Clamp Lift Amount
106
Adjusting the Thread Trimmer Cam Position
107
Adjusting the Tension Release Amount
109
Adjusting the Lower Shaft Gear Backlash
110
Adjusting the Home Position
112
X-Y Feed Home Position
113
Adjusting the Needle up Stop Home Position
115
Adjusting the Needle up Stop Position
116
Bas-342G
117
Electrical Mechanism
118
Inside the Control Box and Operation Panel Structure
119
Description of Fuses
120
Description of Connectors
121
Symptoms When There Are Poor Connections
124
Troubleshooting
128
Diagnosis Flowchart
129
Remedy
133
Table of Error Codes
144
Troubleshooting
148
Segment Display
151
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Brother BAS-342G Specifications
General
Brand
Brother
Model
BAS-342G
Category
Sewing Machine
Language
English
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