Baby Lock Crown Jevel BLCJ18 User manual
Service Manual
www.babylock.com Page 1
Table of Contents
IMPORTANT: Part One of this service manual is for the Baby Lock Crown Jewel I and II machines. Part Two
covers the changes in hardware and soware made to the Baby Lock Crown Jewel III machines. Refer to Part
One for those items not covered in Part Two for the Crown Jewel III.
About the Baby Lock Crown Jewel .............................................................2
About the Manual ..........................................................................2
Service Manual Guidelines ...................................................................2
Part One:...............................................................................3
General Specicaons ...................................................................3
Assembly Torque Specicaons ...........................................................4
Lubricaon ............................................................................5
Secon 1: General Observaons of Front Frame Cover, Mast and Hand Wheel ....................8
Secon 2: Removal of Front Cover ........................................................11
Secon 3: Securing Flats and Screws ......................................................18
Secon 4: Axial Play Check and adjustment ................................................20
Secon 5: Adjusng the Base Plate Feet and Rollers .........................................21
Secon 6: Adjusng the Motor Drive/Timing Belt Tension ....................................22
Secon 7: Adjusng the Presser Bar Height/Presser Foot .....................................23
Secon 8: Needle Posion, Check, and Adjustment ..........................................25
Secon 9: Adjustment of the Loop Li and Needle Distance...................................27
Secon 10: Adjusng Needle Height ......................................................31
Secon 11: Adjustment of the Stop Finger .................................................33
Secon 12: Adjusng the Needle Height with Cylinder Tool ...................................34
Secon 13: Electronic Adjustments and Indicators...........................................35
Indicaons of Speed/Needle Posion Sensor ...........................................36
Power Supplies ....................................................................36
Symptoms of a Failed Power Supply...................................................36
Power Supply “Chirping” ............................................................37
Indicaons of Speed/Needle Posion Sensor Failure .....................................38
LED Idencaon ..................................................................39
Control Pod (C-Pod) Power LEDs......................................................39
Handlebar Communicaons LEDs.....................................................40
Fuses ............................................................................40
Part Two: Baby Lock Crown Jewel III..........................................................42
Added Feature: LED Light Ring ...........................................................44
Added Feature: Increased Speed .........................................................45
Added Feature: Integrated Easy-Set Tension ................................................47
Added Feature: Single 48VDC Power Supply ................................................50
Added Feature: Front Handlebars With Remote On/O Switch ................................52
Added Feature: Low-Bobbin Esmator ....................................................53
Added Feature: Basng Stch............................................................53
Added Feature: Interchangeable Feet Mount ...............................................54
Electrical Notes Crown Jewell III ..........................................................54
The More Screen Opons ...............................................................56
Diagnosc Opons.....................................................................57
Burn-in Note..........................................................................63
Useful Part Numbers ...................................................................65
Page 2 Baby Lock Crown Jewel Service Manual
The Baby Lock Crown Jewel ulizes high-tech
electronics and an innovave touch-pad user
interface to oer greater funconality and ease
of operaon to home quilters than ever before
conceived in the quilng industry. The Baby Lock
Crown Jewel quilng machine is a high quality
machine that incorporates very robust design features
and is very easy to service.
About the Baby Lock Crown Jewel
About the Manual and Baby Lock Support
The purpose of this service manual is to help the technician
complete a repair on a machine accurately and quickly. The
manual is complete with photographs and explanaons
that we hope will aid you in your repair eorts. In addion
to the teaching aids found herein, you will also nd all
of the tools listed that are necessary for adjustments. If
you need help in locang these tools for purchase, please
contact Baby Lock.
Service Manual Guidelines
• Adjustments shown in the manual should only
be made if a seng deviates from the tolerance
specied in the manual.
• Adjustments should be made only in the logical
sequence shown and described in the manual.
(Do not jump ahead or start in the middle of the
adjustment sequence – this may cause addional
or more serious problems than the original issue.)
• Safety must be considered when working on
any machine. Safety warnings are included
throughout this manual where appropriate,
but these warnings do not address all possible
safety concerns that might confront the service
The Baby Lock Crown Jewelmachine is constructed
following a specic sequence of operaons, similar to
the construcon of a house. Walls cannot be erected
unl the foundaon is in place. Similarly, this service
manual has been wrien with an adjustment logic
that is driven by the construcon processes used to
create the machine. If the service technician carefully
follows the adjustment steps in the order presented,
a ne running quilng machine is possible each and
every me.
technician.
• When working on or near any live electrical
assemblies, the power cable must be removed
from the machine.
• We urge you to observe the cauons in the
manual.
• Please note that the hand wheel must always be
turned in the direcon of normal rotaon unless
otherwise instructed. This is especially true when
making the loop-li ming and needle-height
adjustment. (Excepons are removing thread locks
or tesng belt tension. The hand wheel may be
rocked forward and reverse in these cases.)
www.babylock.com Page 3
Part One
General Specicaons
Part One of this service manual is for the rst-generaon and second-generaon Baby Lock Crown Jewel
machines. Part Two covers hardware and soware features added to the Baby Lock Crown Jewel III machines.
Sewing Opening Dimensions:
Sewing Speed:
Stches Per Inch:
Needle System:
Needle Sizes, (recommended):
Hook System:
Bobbin Type:
Bobbin Case:
Motor Type:
Needle Posioning:
Electrical Power:
LED Power Consumpon:
Sew Foot Stroke/Li:
Needle Bar Stroke:
Take-Up Stroke:
Lubricaon, main components:
Lubricaon of hook:
(245 mm X 470 mm)
8.25” X 18”
Manual Mode:
Min 90spm, Max 1800spm (Baby Lock Crown Jewel III:
Max 2200 spm); Regulated Mode:
Min 0spm, Max full speed
4spi – 18spi
134 (135 X 7)
12/80 - 20/125
Rotary, Horizontal, M-class bobbin
Aluminum, Class M
Type MF
Brushless DC
Up and down, walking stch
90 – 264 VAC, 47-63Hz, 300W peak
8 W
5 mm
35.3 mm
73 mm
Kluber Lube, permanent
Velocite 10, Texaco 22
Page 4 Baby Lock Crown Jewel Service Manual
Assembly Torque Specicaons
The Torque Specicaons apply to all internal and external fasteners in sizes 4.0, 5.0 and 6.0 mm in general at
ISO 4762 Screw class 8.8. The torque specicaons are also generally classied as so-jointed and are listed
according to size and placement in the machine.
1. 4 mm Allen socket head cap screws, Class 8.8 @ 2.5 Nm (uses 3 mm Allen tool)
• Head-frame, bearing retainers, front cover small
2. 4 mm Allen set screw, class 8.8 @ 1.2 Nm (uses 2.0 mm Allen tool)
• Tension assembly, 3 hole thread guide, motor pulley, hook
3. 5 mm Allen socket head cap screw class 8.8@ 5.6 Nm (uses 4 mm Allen tool)
• Front cover large
• Belt tensioner
• Drive-train bracket
4. 5 mm Allen set screw, Class 8.8 @ 2.4 Nm (uses 2.5 mm Allen tool)
• Main sha ming pulley, hook-sha ming pulley
• Main sha ming collar, hook-sha ming collar
5. 6 mm Allen socket-head cap screws Class 8.8 @ 9.9 Nm. (Uses 5 mm Allen tool)
An excepon must be observed here since the screws are considered so-jointed and shallow-threaded and
are used externally. It is therefore advised that this torque specicaon not exceed 6 Nm.
• Base plates
• Handlebars
6. 6 mm Allen set screw, Class 8.8@ 4.5 Nm (Uses a 3 mm Allen tool)
• Hand wheel
www.babylock.com Page 5
Lubricaon Specicaons
Lubricant Type
#1. Kluber, Constant OY68 (Red)
#2 Kluber, Mikrozella G 8 OY (Blue)
#3. Kluber, GLY 2100 (Yellow)
#4. Kluber, NCA 15, Isoex (Green)
#5. Kluber, GLY 151, Polylub (Orange)
#6. Conoco, Hydroclear R&O 32 (Purple)
or similar white oil, i.e.
Texaco 22, or Velocite 10
#1 Red OY 68
#2 Blue Mikrozella G 8 OY
#3 Yellow GLY 2100
#4 Green IsoFlex NCA-15
#5 Orange GLY 151
#6 Purple Texaco 22, hook race only
All the above in box w/ booklet
Lubricant Order Numbers
The Baby Lock Crown Jewel lubricang schedule should be followed every year up to every two years to ensure
top mechanical performance.
Machine Components
All main bearings
Main bearing reservoirs
Take-up lever, arculang link and
needle bar driver
Take-up caged needle bearings
Presser bar guide and plunger, liing link and
Pitman eccentric
Hook race
Replacement Lube
Replacement Lube
Replacement Lube
Replacement Lube
Replacement Lube
Replacement Lube
Rep Lube Kit Box
#1 Red: QM49301
#2 Blue: QM49302
#3 Yellow: QM49303
#4 Green: QM49304
#5 Orange: QM49305
#6 Purple: QM49306
#1-#6 Kit QM49262
Lubricang Schedule
Page 6 Baby Lock Crown Jewel Service Manual
Apply one drop of Lube #6 (Purple), to the raceway of the bobbin case support two to three
mes per day. This applicaon is based upon sewing for eight hours of machine me. If the
machine is used less, lubricate the hook less frequently. Aer the lubricaon of the hook, it is
recommended that one momentarily sew on scrap material before resuming the sewing of the
quilt. Failure to do so may result in oil stains on the quilt.
Baby Lock Crown Jewel Lubricaon
Use Lube #1 (Red) in the seven places shown below, on each side of the sha between the bearing
and the sha. Then use Lube #2 (Blue) between the bearing outer diameter and the bearing
support at each of the seven places.
www.babylock.com Page 7
5
5
5
3 (orice located a lile
behind the top radius.)
3
5
#1 (Red) OY 68
One drop on the side of the
needle and presser bars. One
drop on each bearing of the
hopping foot (4 places)
#3 (Yellow) GLY 2100
One drop per orice,
arculang link, take-up lever
and needle bar driver
(3 places)
#4 (Green) IsoFlex NCA-15
Inside caged needle bearings
(2 places)
#5 (Orange) GLY 151
Add grease sparingly to the
presser-bar slide and plunger.
Add a small amount between
the stylus and cams of both
the presser-bar liing link
and the hopping-mechanism
liing arm.
(4 places)
Baby Lock Crown Jewel Lubricaon - Connued
3
1
1
4
4
1
1
1 (Also lubricate two
lower bearings, not shown.)
Page 8 Baby Lock Crown Jewel Service Manual
Figure 1.1
Figure 1.2
1. General Observaon of the Front Frame Cover, Mast and Hand Wheel
The following observaons, accompanied by
necessary adjustments, will ensure trouble-free
thread passage. Failure at any of these points will
signicantly aect thread tension.
Check:
1. The thread mast should be adjusted so that the
eyelet loops are centered directly over the spool pins.
(Figure 1.1)
If a correcon is necessary:
Loosen the jam nut, reposion and ghten the jam
nut. (10 mm open end wrench)
Check:
2. Make sure that a gap of 1.0 mm to 1.5 mm exists
between the frame and the hand wheel. (Note: The
hand wheel screw is inside the front cover and cannot
be seen from the outside of the machine, therefore it
can only be adjusted with the front cover removed.)
(Figure 1.2)
If a correcon is necessary:
(Usually this would only be necessary if the hand
wheel is rubbing, has an extreme gap or is loose.)
Remove the front cover (see Secon 2), loosen the
hand-wheel set screw, posion the hand wheel and
re-ghten the set screw. (3 mm handle Allen)
Figure 1.1 Detail
www.babylock.com Page 9
Figure 1.4
Figure 1.5. Top tension assembly, fully assembled
(two views)
Figure 1.3
3. Check/Inspect: Test the condion of the thread
guides 1, 2, 3, thread srrup 4, thread guide 5 and
needle bar thread guide 6 for any abrasions, cuts, or
electroplang blistering. Test each guide by ossing
it with thread, le to right and front to back in all
direcons, checking for any sharp defects that may
damage or cut the thread. Replace any damaged
parts. (Figure 1.3) (2 mm and 2.5 mm handle Allen)
Check the top tension assembly for the following:
Check between the tension discs for any foreign
material that could prevent the discs from funconing
properly.
If a correcon is necessary:
Check the relave locaon of the knob before
removing the knob. Remove the knob, detent
washer, tension discs and cone spring. (See Figures
1.5 through 1.10.) Clear and reassemble. Note: On
very rare occasions, if the machine has been used
an extreme amount, it is possible for a groove to
be worn into the tension discs. This will make it
impossible for the tension to be adjusted correctly
as the thread can pass through this worn groove in
the tension discs, while the unworn part of the discs
touch, resulng in no tension on the thread in the
groove. This may result in thread nests on the boom
of the quilt. The top tension assembly will need to be
replaced in this instance. Top tension assembly part
#QM10198.
Check: That the take-up spring has a normal torsion
tension and inspect the spring for any cuts, breaks
or abrasions. When moved by hand and released,
it should return to the end of the cutout in the top
tension assembly.
If a correcon is necessary: (2 mm handle Allen, #1
at screwdriver) (Figure 1.5)
Please Note: Tension knob may be either gray or
black in color.
NOTE: If the machine has Easy-Set Tension, see
Integrated Quick-Set Tension in Part Two of this
manual.
B
A
1. General Observaon - Connued
1
2
34
56
Page 10 Baby Lock Crown Jewel Service Manual
Loosen the set screw under the top tension
assembly a couple turns as it xed into an undercut
into the top tension base. (Screw A, Figure 1.4 on
previous page.) Note that the set screw is on about
a 30° angle to the machine front cover. Loosen the
sloed set screw at the rear of the top tension base
and rotate the split bolt unl the spring returns to
the end of the sloed groove when pushed and
released. Re-ghten the set screw rmly.
If the take-up spring needs replacement remove the
tension parts and split bolt and carefully work the
spring around unl it can be removed. Replace with
a new take-up spring (Part #QM10197). Make sure
the split bolt is inserted all the way into the base
and reghten the sloed screw. Adjust the take-up
spring tension so that it barely returns to the end
of its slot when pressed to the side and released.
Figure 1.8 shows this posion. NOTE: Too much
spring tension will aect the stch quality.
Reinstall the top tension parts on the split bolt and
then the assembly into the machine front cover and
ghten the set screw.
Radial poson: When the top tension assembly
is properly installed into the machine front cover,
the straight part of the take-up spring (before the
loop) will be straight up at 12 o’clock (or a lile
bit towards 11 o’clock). (Figure 1.4, Posion B on
previous page.)
Check that the top tension knob is not too loose
on the split bolt and that it has some resistance so
that it will not vibrate loose while sewing.
If a correcon is necessary:
To correct: remove the knob, detent washer and
cone spring, adjust the split bolt by spreading with
a at screwdriver unl the knob has adequate
resistance to keep its seng.
Cauon: The split bolt is hardened and if adjusted
too much it may break. The top tension assembly
will then needs to be replaced. (Top Tension
Assembly Part #QM10198)
Figure 1.6. Knob
removed
Figure 1.7 Detent washer
and cone spring removed
Figure 1.8 .Tension discs removed (two views)
Figure 1.9. Fully disassembled,
laid out in order of assembly
Figure 1.10. Tension
assembly split bolt
1. General Observaon - Connued
www.babylock.com Page 11
Figure 2.4
Figure 2.1
A
Figure 2.3
Figure 2.5
Figure 2.2
2. Removal of the Front Cover
Tools Required: 2 mm, 3 mm, 4 mm handle Allen,
4 mm L Allen, #3 at screwdriver and #2 Phillips
screwdriver.
1. Loosen set screw on top of cover (posion A in
Figure 2.1). Rotate the 3-hole thread guide to allow
access to the frame screw (Figure 2.2), then re-snug
the screw so the guide will not become misplaced.
(2 mm handle Allen tool)
2. Remove the three frame screws circled in
Figure 2.3 (3 mm handle Allen)
3. Before removing the C-pod, use a grounding mat
and wrist strap. Connect the two ground clips to the
bare threads of the hopping foot. (Figure 2.4)
Cauon: Make sure the machine is unplugged from
the wall before removing the C-pod or whenever
working on the machine.
4. Remove the “C-pod” by unscrewing the 4 screws.
(Figure 2.5) (#2 Philips screwdriver)
5. With the machine properly grounded to a
grounding mat, and with a ground wrist strap (Figure
2.4), carefully unplug the cables from the C-pod. Be
careful not to touch the circuit board or damage the
cables or plugs. They should be pulled straight out by
the connector housing. (Page 13, Figures 2.6-2.8)
Note: The plugs are labeled and keyed on the C-pod
circuit board. See Figures 2.6- 2.13 for reconnecon
informaon.
(Connue to Step 6 on page 14.)
A
Page 12 Baby Lock Crown Jewel Service Manual
Figure 2.7
C-Pod Cable and Circuit Board Idencaon
D: Le cable, red and yellow, posion labeled J14
on board. E: Center cable, black and yellow, posion
labeled J15 on board. F: Right cable, red and black,
posion labeled Motor on board. (Note: The board
may be labeled J16 or J17 due to a producon error
on the boards)
A
B
C
Figure 2.6
C-Pod Circuit Board Idencaon (Detail)
A: Encoder connecon. B: Motor driver connecon.
C: Handlebar connecons (2)
DEF
Figure 2.8
C-Pod cables (A-F) shown disconnected
E
DA
B
C
F
J14 J15 J16
J17
Motor
www.babylock.com Page 13
Figure 2.10
Figure 2.9
Figure 2.11
A
6. To remove power supply, loosen the 3
screws on the right side and remove the
3 screws on the le side (shown circled in
orange in Figure 2.9). Slide the power supply
to the le and unplug the boom cable.
(Figures 2.9-2.11)
Important Note: Insulator material must
cover all metal on the back of the power
supply for proper insulang purposes. (See
posion A in Figure 2.10.)
(Connue to Step 7 on page 18.)
2. Removal of the Front Cover
- Connued
Page 14 Baby Lock Crown Jewel Service Manual
Figure 2.13
Locationofencoder
disc and sensor
(circled)
Figure 2.12
Cable Idencaon
F: Motor driver board with
motor power (top)
G: Motor (center)
B: Motor driver (boom)
F
G
B
Internal Wiring Reference Photos
www.babylock.com Page 15
Figure 2.15
Figure 2.14
Figure 2.16
Figure 2.17
Important note: Two ground wires are
xed with a socket head cap screw and star
washer (shown circled in Figure 2.15) for
safety grounding.
Important note: Insulator material must cover
all metal on the back of the power supply for
proper insulang purposes (see circled area in
Figure 2.16).
P-pod Cable Reference
Photos
Page 16 Baby Lock Crown Jewel Service Manual
Figure 2.18
Inside View of C-Pod
C-Pod and Cables P-Pod and Cables
Figure 2.19
Inside View of P-Pod
Do not plug in main power or run the quilng
machine with the P-pod taken o of the machine
and/or open so that any human body part could come
in contact with electrical energy.
Note 1: The C-Pod and the P-Pod are stac-sensive
parts and should not be handled without special
discharge tools. For this reason, all C and P Prints will
be exchanged in the pod covers. Do not remove the
Printed Circuit Boards (PCBs) from the pods.
Note 2: The plugs are labeled and keyed on the
C-pod circuit board.
Note 3: Aer installing the cables through the service
hole on the front cover (see Figure 2.7), carefully
push the excess cable back into the machine as there
is no room in the pod for extra cable. The cables are
to the right of the drive-train bracket and therefore
protected from moving parts on the le side.
DC Power Connecons (at top of photo): Le, red
and yellow cable and connector (labeled J14). Center,
black and yellow (labled J15). Right, red and black
(labeled Motor).
Control Board Connecons (le center): Encoder,
Motor Driver, two Handlebar Connecons.
The two boom white connectors (at lower le in
photo) are for AC power out of P-pod to the two
power supplies. One power supply is mounted to the
back frame and the second power supply is mounted
to the front frame. The cables that connect to these
connectors each have three black wires.
Encoder
Motor Driver
Handlebar (2)
CAUTION! DANGER OF ELECTRICAL SHOCK! DANGEROUS VOLTAGES. CAUTION!
J14
J15
Motor
www.babylock.com Page 17
Figure 2.20
Figure 2.21
Figure 2.22
Figure 2.24
7. Remove the needle plate. (Figure 2.20) (#3 at
screwdriver)
8. Loosen both the front and rear base plates a couple
turns to allow the front cover to be removed. (Figures
2.21 and 2.22) (Tools needed: 5 mm handle Allen wrench)
9. Remove the 9 frame screws shown circled in Figure
2.23. Note: The ninth screw is behind the C-pod and was
removed in step 4.
(4 mm handle Allen. May need 4 mm L Allen tool to break
loose screws.) Note: The three small screws (shown circled
in Figure 2.24) were removed in step 2.
10. Separate the front frame cover. Make sure the take-up
lever does not get caught in the frame slot.
Important Note: The take-up lever is very hard and will
break, not bend.
Figure 2.23
2. Removal of the Front Cover -
Connued
Page 18 Baby Lock Crown Jewel Service Manual
3. Checking and Securing Flats and Screws
Figure 3.1
Figure 3.2
The Baby Lock Crown Jewel has been designed using ats and special screws to help prevent loop li ming from
slipping, except at the hook. (If the hook cannot slip then something has to break when something goes wrong. The
hook is designed to be adjusted without removing the front cover.)
First check the torque specicaons chart on page 5,
then check the following locaons, making sure that
the rst screw of a med component has been xed
rmly on the respecve at on the sha:
1. The Pitman crank (Figure 3.1) (# 5 sloed
screwdriver 2. The take-up lever driving link, (Figure
3.1) (3 mm handle Allen)
3. The main sha ming pulley (Figure 3.3) (2.5 mm
handle Allen)
4. The hook-sha ming pulley (Figure 3.6 on page
20) (2.5 mm handle Allen).
Note: The screws are generally posioned 120 degrees
apart. When the rst screw (Posion 1) has been
located and ghtened on a at, the second screw is then
ghtened, compounding the ghtness of the rst screw,
thus securing and assuring that ming will not change.
Note: The main-sha thrust collar has been replaced with
a brass counterweight which is no longer located on a at.
Note: It is important to check that the brass counterweight
ghtening procedure did not create a ght arm sha
condion. If so, readjust the counterweight again unl
there is no ghtness and minimal-to-no end-play. This is
checked by rotang the sha and checking a few mes
thru a full 360° rotaon of the sha.
Counterweight Timing
Set counterweight ming as follows.
First Pitman screw up, edge vercal and aligned with
lier arm. At this posion, the counterweight chamfer
(the beveled edge) always goes to the le side next to the
bearing and the slit is either straight up with screws on top
or straight down with screws on boom straight out at you
(Figure 3.2).
The counterweight has a slit and can be adjusted. It is not
set on a at for ming.
Note: The end where the chamfer is cut on the
counterweight will determine whether the slit is up or
down. The counterweight funcons the same whether the
slit is up or down. The counterweight chamfer edge is for
bearing clearance and goes to the le against the bearing
always (Figure 3.1).
Take-up Lever Driving Link 1st screw
Pitman Crank 1st screw
Figure 3.3
Figure 3.4
1st screw Main
Shaft Timing
Pulley on at
Flat
Slit straight up
Edge vertical
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