Brother Dream Quilter 15 User manual

Service Manual
Copyright Aug 01, 2016
Jim M. Bagley, GraceWood, Inc
(Reproduction Prohibited)
Version 1

2
Table Of Contents
Bobbin Winder 3
Display Board Box 4
Adjust Needle Bar Height 5
Hopping Foot Height 6
Hook Holder 7
Timing the Sewing Machine 8
Handle Bars 9
Needle Plate 9
Thread Tensioner 10
Right Rear Pod 11
Front Housing 11
Needle Rod Holders 12
Upper Shaft 13
Main Board 16
Power Supply 17
Grounding Wire 17
Motor Driver Board Plugs 18
Optical Encoding Board 18
Grounding Wire 20
Idler Pulley Tension 20

Bobbin Winder
3
Assembly
1. Adjust the Bobbin Winder Cam to be
centered to the Bobbin without touching it
by loosening the Set Screw by the 1.5mm
Allen Wrench, adjusting the Cam, and
retightening the Set Screw.
Set
Screw
2a. If thread winds mostly on the top of the
bobbin, the Tension Discs Post will need to be
lowered by twisting the Post Clockwise and
retightening the hex nut.
2b. If thread winds mostly on the bottom of
the bobbin, the Tension Discs Post will need
to be heightened by twisting the Post Counter
Clockwise and retightening the hex nut.
Tools Needed:
• 1.5mm Allen Wrench
• 9mm Crescent Wrench

Display Board Box
Press here
Press here
4
Assembly
4
Assembly
Tools Needed:
• Flat Head Screw Driver

Adjust Needle Bar height with a Flat
Head Screw Driver here.
Needle Bar
Thread Guide
faces front of
machine
Height Spacer Flat Spot
Tip of Needle
Adjust Needle Bar Height
5
Assembly
Tools Needed:
• Needle Bar Height Spacer
• Flat Head Screw Driver

1. Using the hand wheel in the back of your machine, rotate your machine until the nee-
dle bar is in the lowest position.
2. Attach your hopping foot to the press bar using a M3 socket head screw (don’t tighten
during this step)
3. Using the hole in the needle plate, align the hopping foot so that is centered.
4. Place 8 sheets of paper under the foot and lower the hopping foot to the top of the
surface. You may need to use more or less sheets of paper if your project is particu-
larly thick or thin.
5. Tighten the bolt using the 2mm allen wrench
M3 Socket
Head Thumb
Screw
Press Bar
Needle Plate
Hopping Foot
3mm Allen
Wrench
(Green
Handle)
M3 Socket
Head Screw
6
Assembly
Hopping Foot Height
Tools Needed:
• 3mm Allen Wrench

Hook Holder
7
Assembly
1. Rotate your hook assembly so that the positioning guide is at the highest point during
rotation.
2. Attach your hook holder to your sewing machine with a M5 X 10 FHCS (don’t tighten
the screw during this step) with the hook holder’s nger in the middle of the hook
assembly’s positioning guide.
3. Slide your hook holder away from the hook hssembly so there is about a 0.75mm gap
(it’s hard to measure so just make it as big of a gap as possible with the hook holder
still in the positioning guide) between the hook holder and the hook assembly, and
tighten the M5 X 10 FHCS.
Tools Needed:
• 3mm Allen Wrench - Green Handle
Hook Holder
Hook Assembly
0.75mm Gap
between Hook
Holder and Hook
Assembly
Hook Assembly
Positioning
Guide
M5 X 10 FHCS

Timing the Sewing Machine
8
Assembly
1. Remove needle plate.
2. Loosen all three hook assembly set screws with a M2 allen wrench by inserting the wrench
into the machines timing hole cut out when each set screw aligns with the hole.
3. Rotate the handwheel clockwise from the front of the machine so needle is raising out of
the hook assembly.
4. Bring the needle so it rests on the top of timing spacer, so the groove in the needle aligns
in the middle of the hook on the hook assembly. The needle should be as close as possible
to the hook assembly without touching, roughly between 0.02mm and 0.075mm.
5. Tighten set screw, make sure needle doesn’t hit hook by watching to see if the needle
bends during rotation and there is no clicking noise. Rotate machine using the handwheel
a full rotation to ensure the needle doesn’t hit anywhere during rotation. If needle hits
the hook assembly anywhere during rotation adjust needle height up or down off center
from hook in 0.25mm increments as appropriate to clear the collision.
6. Tighten the two remaining set screws and reattach the needle plate.
Tools Needed:
• 2mm Allen Wrench - Red Handle
• Timing Spacer
Hook
Assembly
Needle
Set
Screws
Hook
Scarf
0.02-0.075mm Gap
Timing Hole
Cut Out Timing Spacer
Tip Of Needle
2mm Allen
Wrench
A timing tutorial is availablie on our website at:
http://www.qniquequilter.com/videos/tutorials/
QR
CODE

Handle Bars
Needle Plate
Front Handle Support Bar
9
Assembly
9
M6 x 15mm SBHCS
M6 x 10mm SBHCS
Needle Plate
Needle Plate Screw
Needle
Tools Needed:
• Flat Head Screw Driver
Tools Needed:
• 4mm Allen Wrench
• 3mm Allen Wrench
1. Place your needle plate on your sewing
machine and rotate hand wheel to
ensure needle plate orientation so that
all screw holes are visible and needle
enters the middle of the needle plate
without contacting the needle plate at
any point
2. Attach your needle plate using 4 needle
plate screws, don’t tighten the screws
during this step.
3. Rotate hand wheel until the needle is in
the lowest position move needle plate
till it is centered around needle and
tighten all 4 needle plate screws.
M5 x 10mm
SBHCS
Display Clip - Bottom
Display Clip - Top
M4 x 8mm SBHCS

Thread Tensioner
10
Assembly
Tools Needed:
• 2.5mm Allen Wrench
Assembly Steps
3. Press Thread Tension Assembly
into sewing machine body until it
bottoms out.
4. Orient Thread Tension Assembly
so that the spring is pointing
in roughly 90 degrees above
horizontal as shown in Figure 2.
5. Tighten 1 M5X8mm Set Screw
into sewing machine body and
tighten the Thread Tension
Assembly into place.
90 Degree Angle
Removal Steps
1. Loosen 1 M5 X 8mm Set Screw in
sewing machine.
2. Remove old Thread Tension
Assembly.
Thread Tension
Assembly
M5 X 8mm Set Screw
Figure 1
Figure 2

Right Rear Pod
Front Housing
11
Assembly
Tools Needed:
• 3mm Allen Wrench
Tools Needed:
• 4mm Allen Wrench

Needle Rod Holders
12
Assembly
Press Bar
Rod Holder
Retaining
Ring
Swing Bracket
Pin for Swing
Bracket (Loc-
Tite and Fasten)
Needle Rod
Holder Long
Needle Rod
Holder
Note: Set Press Bar
to be about 2mm
above Needle Rod
Holder
Tools Needed:
• Flat Head Screw Driver
Press Bar
Rod Holder

Upper Shaft - Version 1
Tools Needed:
• 3mm Allen Wrench
• Flat head Screw Driver
13
Assembly
Top Shaft
Assembly
M5 X 15 SBHCS
Top Shaft
Bushing Clamp
Pin for Swing
Bracket
Thread Take-up
And Counter
Weight Assembly
Crank Screw
Crank Set Screw
O-Ring
Connecting Link
M3 x 3mm Set
Screw (x3)
Top Shaft Bearing
Assembly
Hopping Foot
Eccentric Cam
Assembly
Main Shaft
Top Shaft Bearing
Assembly
M3 x 3mm Set
Screw (x3)
M4 x 4mm Set
Screw (x3)
Top Shaft
Pulley M6 x 6mm Set
Screw (x2)
Optical Encoding
Wheel Assembly

Upper Shaft - Version 2
14
Assembly
M5 X 15 SBHCS
Top Shaft
Bushing Clamp
Pin for Swing
Bracket
Loosen Needle
Holder Screw
when removing
Upper Shaft.
Tools Needed:
• 3mm Allen Wrench
• Flat head Screw Driver
Top Shaft
Assembly
Connecting Link
Thread Take-up
Lever Spring
Thread Take-up
Crank Pin
Thread Take-up
Assembly
6.35mm x 6mm
Flat Set Screw
Crank Screw
Crank Set Screw
Counter Weight
M3 x 3mm
Set Screw
Top Shaft Bearing
Assembly
M4 x 4mm
Set Screw M4 x 4mm
Set Screw
Hopping Foot
Eccentric Cam
Assembly
Top Shaft
Pulley
M3 x 3mm
Set Screw
Top Shaft Bearing
Assembly
M6 x 6mm
Set Screw M4 x 4mm
Set Screw
Handle Wheel
M6 x 12mm
Connector Bolt
Optical Encoding
Wheel Assembly
Main Shaft
O-Ring
M4 x 8mm
SBHCS
Thread Take-up
Lever Clamp
Thread Take-up
Lever Clamp Right

Pulley and Optical Encoding Wheel
Lower Shaft - Version 1
15
Assembly
Note: Top Shaft Pulley needs
to be 7mm from Bearing Collar
Lower Shaft - Version 2
M5 x 10mm
SBHCS
M5 x 10mm
SBHCS
Lower
Shaft Rear
Bushing
Clamp
Lower
Shaft Front
Bushing
Clamp
Lower Shaft
Assembly
M5 x 10mm
SBHCS
Lower Shaft
Bushing Clamp
Lower Shaft
Assembly
Lower Shaft
Bushing Clamp M5 x 10mm
SBHCS

Lower Shaft Assembly
16
Assembly
Hook
Assembly
Hook
Assembly Set
Screw x3
M4 x 4mm
Set Screw x3
Lower Shaft
Bearing
Assembly Lower Shaft
Pulley
Lower Shaft
Bearing
Assembly
M4 x 4mm
Set Screw x3
M4 x 4mm
Set Screw x3

Bushing Block
17
Assembly
Bushing Block
Adjustment Plate
M6 x 25mm
Set Screws M4 x 8mm
SBHCS
Bushing
Block
M5 x 16mm
SBHCS
12 3
Needle Bar
Thread Guide
M3 Thumb
Screw
Needle
Tighten the M4 x 8mm
SBHCS after the needle
has been aligned with
the needle plate hole.
Align the
needle with
the needle
plate hole
Align the needle
with the needle
plate hole so
that it will pass
through with
out touching the
needle plate
Use the M6
x 25mm set
screw to adjust
the bushing
block position
Tighten
the lower
screw rst
to prevent
the bushing
block from
going out of
alignment
Needle Bar
Assembly Steps
Step 1: Attach the Bushing
Block Adjustment Plate to the
body with M4 x 8mm SBHCS.
Leave the screws loose.
Step 2: Slide the Bushing
Block over the Adjustment
Plate and thread the M5 x
16mm SBHCS. Leave the
screws loose.
Bushing Block Adjustment
Tools Needed:
• 3mm Allen Wrench
• 2.5mm Allen Wrench
Step 3: Thread the M6 x 25mm Set Screws into the Bushing Block
Step 4: Slide the needle bar through the top of the machine and through the
bushing block, then attach the needle bar thread guide and secure a needle in place
using the m3 x thumb screw.
Step 1: Slide the Bushing Block Adjustment Plate so that the needle is in line with the hole on the
needle plate then tighten the M4 x 8mm SBHCS to lock it in place.
Step 2: Use the M6 x 25mm Set Screws to adjust the Bushing Block in and out so that the Needle is
in line with the hole on the Needle Plate.
Step 3: Tighten the M5 x 16mm SBHCS on the back of the machine. Tighten the lower screw rst, then
tighten the two upper screws.

Main Board
Back Handle Cable or Front Handle Cable
Back Handle Cable or Front Handle Cable
Motor Driver Signal Cable
Speed Sensor Cable
24V Power Supply
LED Cable (2 wires together)
Bobbin Winder Cable (2 separate wires)
18
Electronics
Tools Needed:
• Phillops Head Screw Driver
• 3mm Allen Wrench

Grounding Wire
Power Supply
M6 X 20 SBHCS
Grounding Wire
to Power Supply
Grounding Wire to
M6 x 20 SBHCS of
Pulley Assembly
Grounding Wire
Terminal
Tools Needed:
• 4mm Allen Wrench
Power Supply
Power Supply
Main Controller
24V Power Cable
Motor Driver
24V Power Cable
(Thinner Cable)
Cable to AC
Power Supply
Cable
19
Electronics

Optical Encoding Board
Speed Sensor CableM6 x 15mm SBHCS
Motor Driver Board Plugs
Motor Driver 24V Power Cable
(Thinner Cable) To Power Suply
Motor Driver Signal Cable
Motor Cable (Thicker Cable)
*Note: Do not confuse the Motor Driver Cable
and the Motor Power Cable. If plugged in
opposite it will burn out the board.
20
Electronics
Tools Needed:
• 4mm Allen Wrench