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MD-741B
User Manuals: Brother MD-741B Sewing Machine
Manuals and User Guides for Brother MD-741B Sewing Machine. We have
1
Brother MD-741B Sewing Machine manual available for free PDF download: Service Manual
Brother MD-741B Service Manual (84 pages)
SINGLE NEEDLE DIRECT DRIVE STRAIGHT LOCK STITCHER WITH THREAD TRIMMER
Brand:
Brother
| Category:
Sewing Machine
| Size: 1.72 MB
Table of Contents
Safety Instructions
3
Maintenance and Inspection
5
Table of Contents
7
1 Machine Specifications
8
2 Notes on Handling
9
3 Function Settings (Operation Panel)
10
Maximum Sewing Speed and Start Backtack Sewing Speed Setting Methods
10
Using the LOCK Key
11
Setting the DIP Switches
11
Setting Functions
12
Function List
13
Clearing Saved Data (Initialization)
28
4 Initializing the Control Box Panel
29
5 ADJUSTING the ROTARY HOOK LUBRICATION AMOUNT (-[]0[], []3[] Specifications)
30
6 Adjustments
31
Adjusting the Actuator Position
31
Adjusting the Safety Switch Position
32
Adjusting the Thread Take-Up Spring
33
Adjusting Arm Thread Guide R
34
Adjusting the Presser Foot Height
34
Adjusting of the Feed Dog Height
35
Adjusting the Feed Dog Angle
36
Adjusting the Needle Bar Height
37
Adjusting the Needle and Feed Mechanism Timing
37
Adjusting the Needle and Rotary Hook Timing
38
Adjusting the Thread Trimming Timing
39
Adjusting the Thread Take-Up Amount (-[][]3 Specifications)
40
Adjusting the Needle up Stop Position (When Using the Operation Panel)
41
Setting the Needle up Stop Position and Needle down Stop Position (if Using the Control Box Panel)
42
Adjusting the Treadle
44
Adjusting the Presser Foot Floating Amount (Minute Lifting Amount)
44
7 Replacing Parts
45
Fixed Knife
45
Movable Knife
45
Motor and Timing Belt
46
Rotary Hook RP
49
Feed Bar Shaft, Lifting Feed Shaft
50
8 APPLYING GREASE (-[]3[], []5[] Specifications)
51
When Using the Operation Panel
51
When Using the Control Box Panel
53
9 Control System
55
10 Control Box and Motor
56
Removing and Installing the Control Box
56
Control Box and Motor Rating Plate
57
Control Circuit Board
59
Checking the Motor and Power Supply
61
Checking the Solenoids
62
11 Treadle Unit Assembly
63
Types
63
Standard Setting Values
64
Setting Method for Standard Depression Strokes
65
12 Standing Operation Pedal
69
Installing the Foot Plug
69
Connectors
70
13 Troubleshooting
71
Sewing
71
Error Code Displays
76
14 Segment Display Definition Table
81
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