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