Brother DB2-DD7100A Service Manual Page 36
- Page / 153
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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6. ASSEMBLY
SL-710A
29
6. ASSEMBLY
DANGER
Wait at least 10 minutes after turnin
g
off the
p
ower switch and disconnectin
g
the
p
ower cord from the wall outlet
before o
p
enin
g
the face
p
late of the control box. Touchin
g
areas where hi
g
h volta
g
es are
p
resent can result in
severe injury.
CAUTION
Disassembl
y
and assembl
y
of the sewin
g
machine
should onl
y
be carried out b
y
a
q
ualified
technician.
Turn off the
p
ower switch and disconnect the
p
ower cord from the wall outlet before assembl
y
,
otherwise the machine ma
y
o
p
erate if the treadle
is de
p
ressed b
y
mistake, which could result in
injury.
If the
p
ower switch needs to be left on when
carr
y
in
g
out some ad
j
ustment, be extremel
y
careful to observe all safety precautions.
Use both hands to hold the machine head when
tilting it back or returning it to its original position. If
onl
y
one hand is used, the wei
g
ht of the machine
head ma
y
cause
y
our hand to slit, and
y
our hand
may get caught.
Be sure to wear
p
rotective
g
o
gg
les and
g
loves
when handlin
g
the lubricatin
g
oil, so that no oil
g
ets into
y
our e
y
es or onto
y
our skin, otherwise
inflammation can result.
Furthermore, do not drink the oil under an
y
circumstances, as the
y
can cause vomitin
g
and
diarrhea.
Keep the oil out of the reach of children.
Use onl
y
the
p
ro
p
er re
p
lacement
p
arts as
specified by Brother.
If an
y
safet
y
devices have been removed, be
absolutel
y
sure to re-install them to their ori
g
inal
p
ositions and check that the
y
o
p
erate correctl
y
before using the machine.
An
y
p
roblems in machine o
p
eration which result
from unauthorized modifications to the machine
will not be covered by the warranty.
6-1. Stitch length dial, reverse stitching lever and
feed regulator mechanism
1. Insert the feed regulator assembly (1) into the
mounting hole in the arm so that the screw stop is
facing to the front.
2. Check that the feed regulator (2) moves smoothly with
no play in the direction of the arrow, and then tighten
the two set screws (3).
3. Set the feed regulator (2) so that it is horizontal as
shown in figure [A], insert the spring (4) and the
positioning pin (5) into the mounting hole, and then
screw in the stitch length dial (6).
< For DD7100A, 710A >
The positioning pin (5) should be in the groove of the
lock lever (7) when screwing in the stitch length dial (6).
1708M
(5)
(7)
1707M
1706M
(3)
[2 pcs.]
(2)
(4)
(5)
(6)
Screw stop
(2)
(1)
[A]
Horizontal
- DB2-DD7100A 1
- DB2-DD7100 1
- SAFETY INSTRUCTIONS 2
- CAUTION 3
- 3. Warning labels 5
- 4. About the ground symbol 5
- 1. SPECIFICATIONS 8
- 2. OPTIONAL PARTS 10
- 3. NOTES ON HANDLING 11
- 4. MECHANICAL DESCRIPTIONS 12
- 4-3. Feed mechanism 13
- 4-4. Quick reverse mechanism 14
- 1638M1635M1634M 16
- 4-8. Thread wiper mechanism 21
- 5. DISASSEMBLY 23
- 5-2. Connectors 24
- <DD7100A, 710A> 27
- 5-9. Quick reverse solenoid 28
- 5-14. Feed bar mechanism 30
- 5-15. Feed rocker shaft 30
- 5-16. Presser foot mechanism 31
- 5-19. Pulley and motor 32
- 5-20. Timing belt 33
- 5-24. Stitch length dial 35
- 6. ASSEMBLY 36
- 6-3. Plunger 38
- 6-8. Presser foot mechanism 46
- 6-9. Feed rocker shaft 47
- 6-10. Spring 47
- 6-11. Feed bar mechanism 48
- 6-14. Oil (Feed rocker shaft) 51
- 1766M1765M 53
- 6-19. Tension release wire 58
- 6-20. Quick reverse solenoid 59
- 6-22. Oil tank 61
- 6-23. Tension release wire 62
- 6-24. Ground wire 62
- 6-25. Operation panel 62
- 6-27. Safety switch 64
- 6-29. Other devices 64
- 6-30. Connectors 65
- 6-31. Lubrication 66
- (DD7100A,710A) 67
- (DD7100) 67
- 6-33. Test operation 68
- 7. ADJUSTMENTS 70
- 7-9. Quick reverse mechanism 76
- 7-11. Synchronizer Adjustment 77
- 7-13. Adjusting the treadle 79
- Less oil 80
- More oil 80
- 8. CONTROL SYSTEM 82
- NO. K 0 1 A 111 0 1 84
- NO. G01A11111 85
- 11. CONTROL CIRCUIT BOARD 86
- Control box 88
- DIP switches 88
- OFF: Down 88
- 12-3. Parameters 90
- 12. FUNCTION SETTING METHODS 92
- 12-5. Memory switches 94
- 13. TREADLE UNIT ASSEMBLY 97
- 13-2.Standard setting values 98
- 1) Signal setting entry 99
- 7) Completion of setting 102
- 14. STANDING OPERATION PEDAL 103
- 14-2. Connectors 104
- <CN15> 105
- (1) Puller output 105
- (6) Puller power supply 105
- 16. AUTO BOBBIN CHANGER 106
- 17. SPEED SETTING METHODS 107
- 18. CLEARING THE MEMORY DATA 109
- Power switch 110
- 20. CHECKING THE SOLENOIDS 111
- 21. WIRING DIAGRAMS 112
- Operation panel B-40 (2/3) 138
- Operation panel B-40 (3/3) 139
- Operation panel B-100 (2/3) 141
- Operation panel B-100 (3/3) 142
- 22. TROUBLESHOOTING 143
- Large degree of puckering 144
- Oil gauge 146
- 22-2. Error code displays 150
- Voltage rating label 151
- SERVICE MANUAL 153
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