DB2-DD7100A
1. NAMES OF MAJOR PARTS .................................
1
2. MACHINE SPECIFICATIONS ...............................
3
3. OPTIONAL PARTS ................................................
5
4. INSTALLATION ....................................................
7
4-1. Work Table ............................................................. 9
4-2. Installing the control box ..................................... 10
4-3. Installing the machine head ................................. 11
4-4. Installing the cotton stand .................................... 13
4-5. Installing the knee lifter assembly
(-30
□
• 31
□
• 40
□
• 41
□
) .................................. 13
4-6. Installing the knee switch (-90
□
• 91
□
) ............ 14
4-7. Lubrication ............................................................ 15
4-8. Connecting the cords ........................................... 17
4-8-1. Opening the control box cover ................. 17
4-8-2. Connecting the cords ................................. 19
4-8-3. Using the binding strap ............................. 20
4-9. Connecting the motor connector, power
supply connector and power cord ....................... 21
4-10. Test operation (Operating the treadle) ............. 23
5. PREPARATION BEFORE SEWING ......................
25
5-1. Installing the needle ............................................. 25
5-2. Removing the bobbin case .................................. 26
5-3. Winding the lower thread .................................... 27
5-4. Installing the bobbin case .................................... 28
5-5. Threading the upper thread ................................. 29
5-6. Adjusting the stitch length .................................. 30
5-7. Using the knee lifter lever
(-30
□
• 31
□
• 40
□
• 41
□
) .................................... 30
5-8. Using the solenoid-type presser lifter
(-90
□
• 91
□
) ........................................................ 31
5-9. Using the thread wiper
(-40
□
• 41
□
• 90
□
• 91
□
) .................................. 32
6. USING THE B-40 OPERATION PANEL ...............
33
6-1. Part names and functions .................................... 33
6-2. Setting a sewing operation .................................. 39
6-3. List of operations .................................................. 45
7. USING THE B-100 OPERATION PANEL .............
53
7-1. Part names and functions .................................... 53
7-2. Standard pattern sewing operations ................... 62
7-3. Programming with sewing
(patterns 5
-
9) ....................................................... 71
7-4. Programming without sewing ............................. 75
7-5. Changing a program ............................................. 77
7-6. Programmed sewing (examples) ........................ 79
8. LOWER THREAD REMAINDER SETTING ..........
81
9. SEWING ...............................................................
85
9-1. Sewing ................................................................... 86
9-2. Backtacking ............................................................ 86
10. THREAD TENSION ..............................................
87
10-1. Adjusting the thread tension ............................. 87
10-2. Adjusting the trailing length after
thread trimming .................................................. 88
10-3. Adjusting the presser foot pressure ................. 88
11. CLEANING ...........................................................
91
12. REPLACING PARTS .............................................
95
12-1. Replacing the fixed knife .................................... 96
12-2. Replacing the movable knife .............................. 97
13. STANDARD ADJUSTMENTS .............................
98
13-1. Adjusting the thread tension spring ................. 99
13-2. Adjusting arm thread guide R ......................... 101
13-3. Adjusting the presser foot height ................... 102
13-4. Adjusting of the feed dog height ..................... 103
13-5. Adjusting the feed dog angle .......................... 104
13-6. Adjusting the needle bar height ..................... 106
13-7. Adjusting the needle and feed
mechanism timing ........................................... 107
13-8. Adjusting the needle and rotary
hook timing ........................................................ 109
13-9. Synchronizer Adjustment ................................ 110
13-10. Adjusting the rotary hook
lubrication amount ........................................... 112
13-11. Adjusting the treadle ...................................... 117
14. INSTALLING OPTIONAL PARTS ......................
118
14-1. Installing the bobbin thread
detector ............................................................. 118
14-2. Installing the solenoid-type
presser lifter ...................................................... 121
14-3. Installing the thread wiper .............................. 126
14-4. Installing the standing operation
pedal .................................................................. 131
14-5. Installing the casters ........................................ 135
14-6. Installing the spacers ....................................... 136
14-7. Installing the parts for sewing new synthetic
materials or the rotary hook RP ...................... 137
14-8. Installing the illumination lamp ...................... 141
15. TROUBLESHOOTING ........................................
143
16. NOTES ON TRANSPORTATION ......................
163
CONTENTS
