Baby Lock Regalia BLRG20 User manual

Service Manual
Model BLRG20

Table of Contents
About the Regalia ..........................................................................3
About the Manual ..........................................................................3
Service Manual Guidelines ...................................................................3
General Specicaons .......................................................................4
Assembly Torque Specicaons ...............................................................5
Lubricaon ................................................................................6
Secon 1: General Observaons of Thread Mast, Thread Guides, Quick-Set Tension, Take-Up Spring ......7
Secon 2: Removal of Front Cover ............................................................11
Secon 3: Lubricaon ......................................................................14
Secon 4: Securing Screws on Flats (Counterweight Timing) ......................................18
Secon 5: Axial Play Check and Adjustment ....................................................20
Secon 6: Adjusng the Base Plate Feet and Rollers .............................................21
Secon 7: Adjusng the Motor Drive/Timing Belt Tension ........................................23
Secon 8: Adjusng the Hopping Foot and Presser Bar Height.....................................24
Secon 9: Needle Posion Y / Front to Back, Check and Adjustment ................................27
Secon 10: Replacing Front Cover ............................................................28
Secon 11: Needle Posion X / Le to Right Check and Adjustment ................................31
Secon 12: Checking Loop Li and Needle Distance .............................................32
Secon 13: Adjusng Loop Li and Needle Distance .............................................33
Secon 14: Adjusng Needle Height ..........................................................36
Secon 15: Adjustment of the Stop Finger .....................................................38
Secon 16: Adjustment the Needle Height with Cylinder Tool .....................................39
Secon 17: Electronic Informaon............................................................41
System Power.........................................................................41
Fuses ................................................................................41
Power Supplies........................................................................43
Symptoms of a Failed Power Supply.......................................................43
Needle Posion Sensor .................................................................44
Removing Handwheel ..................................................................45
Replacing Handwheel ..................................................................47
Control Board LEDs ....................................................................48
Handlebar Communicaons LEDs.........................................................50
LED Summary .........................................................................52
Handlebar Front Membrane Switch Connecon.............................................53
Handlebar Rear Membrane Switch Connecon .............................................54
Rear Connecon Panel Board ............................................................55
Front Nose Cover Connecon............................................................57
Control Board Connecon...............................................................58
Motor Driver Board Connecon and LEDs..................................................59
Cable Assemblies ......................................................................60
Quick Set Tension Calibraon ............................................................64
Thread Break Sensor ...................................................................65
Machine Power-up Sequence and Code Updates ............................................66
Deleng and Manually Updang Regalia Display Soware ....................................67
Soware Updates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Regalia Quick Reference Card ............................................................71
Block Diagrams........................................................................73
Burn-In ..............................................................................79
Notes....................................................................................80

BabyLock.com Page 3
The Regalia ulizes high-tech electronics and an innovave touch-pad user interface to oer greater
funconality and ease of operaon to home quilters than ever before conceived in the quilng industry. The
Regalia quilng machine is a high quality machine that incorporates very robust design features and is very
easy to service.
The Regalia machine is constructed following a specic sequence of operaons, similar to the construcon of a
house. Walls cannot be erected unl the foundaon is in place. Similarly, this service manual has been wrien
with an adjustment logic that is driven by the construcon processes used to create the machine. If the service
technician carefully follows the adjustment steps in the order presented, a well running machine is possible
each and every me.
About the Regalia
About the Manual and 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 explanaons that we hope will aid you in your repair
eorts. In addion 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 locang these tools for purchase, please contact Baby lock.
Service Manual Guidelines
• Adjustments shown in the manual should only be made if a seng deviates from the tolerance specied 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 addional 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 technician.
• When working on or near any live electrical components or assemblies, the power cable must be removed
from the machine.
• We urge you to observe the cauons in the manual.
NOTE: The hand wheel must always be turned in the direcon of normal rotaon unless otherwise
instructed. This is especially true when making the loop-li ming and needle-height
adjustment. Excepons are removing thread locks or tesng belt tension. The hand wheel
may be rocked forward and reverse in these cases.

Page 4 Regalia Service Manual
General Specicaons
This Service Manual covers the Regaliaand Forte machines. The Regaliamachine went into producon in
November 2017 and the Forte machines went into producon in February 2018.
Sewing Opening Dimensions:
Sewing Speed:
Stches Per Inch:
Basng Mode:
Needle System:
Needle Sizes, (recommended):
Hook System:
Bobbin Type:
Bobbin Case:
Motor Type:
Needle Posioning:
Electrical Power:
Outlet Power
Sew Foot Stroke/Li:
Needle Bar Stroke:
Take-Up Stroke:
Lubricaon, main components:
Lubricaon of hook:
Regalia(228 mm X 521 mm) 9” X 20.5”
Manual Mode: Min 25 spm, Max 2500 spm
Regulated Mode: Min 0 spm, Max full speed
4 – 24 spi
One stch per quarter inch, one stch per half inch,
one stch per inch, one stch per two inches , and
one stch per four inches
134 (135 X 7)
12/80 - 20/125
Rotary, Horizontal, M-class bobbin
Aluminium, Class M
Type MF
Brush less DC
Up and down, walking stch, on-screen handwheel
100-240VAC, 50-60 Hz, 1.5 - 3.3 A
This machine conforms to UL and internaonal
safety standards for sewing machines and US and
internaonal laws for electromagnec compliance.
120 was maximum
5 mm
35.3 mm
73 mm
Kluber Lube, permanent
Velocite 10, Texaco 22

BabyLock.com Page 5
Assembly Torque Specicaons
The Torque Specicaons 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 specicaons are also generally classied 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 excepon 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 specicaon 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

Page 6 Regalia Service Manual
Lubricaon Specicaons
Rep Lube Kit Part# QM49262
The Regalia lubricang schedule should be followed every 24 months or 10 million stches whichever
comes rst.
Lubricang Schedule
#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 with booklet
HQ Lubricant Order Numbers
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
Lubricant Type Machine Component
#1. Kluber, Constant OY68 (Red) • All main bearings
#2 Kluber, Mikrozella G 8 OY (Blue • All main bearings
#3. Kluber, GLY 2100 (Yellow) • Take-up lever, arculang link and needlebar driver
#4. Kluber, NCA 15, Isoex (Green) • Take-up caged needle bearings
#5. Kluber, GLY 151, Polylub (Orange) • Hook race presser bar guide and plunger, liing
linkand Pitman eccentric
#6. Conoco, Hydroclear R&O 32 (Purple) or similar
white oil, i.e. Texaco 22, or Velocite 10
• Hook race

BabyLock.com Page 7
Secon 1: General Observaon: Thread Mast and
Thread Guides
The following observaons, accompanied by necessary
adjustments, will ensure trouble-free thread passage.
Failure at any of these points will signicantly aect
thread tension.
Check:
1. The thread mast should be adjusted so that the
eyelet loops are centered directly over the spool
pins.
If a correcon is necessary:
Loosen the jam nut on the thread mast, reposion
and ghten the jam nut. (10 mm open end wrench)
2. Check/Inspect: Test the condion of the thread
guides (1, 2, 3), thread srrup (4), thread guide (5)
and needle bar thread guide (6) for any abrasions,
cuts, or electroplate blistering. Test each guide
by ossing it with thread, le to right and front
to back, in all direcons, checking for any defects
that may damage or cut the thread. Replace any
damaged parts. (2 mm and 2.5 mm handle Allen)
3. Check the top tension assembly for the following:
Check between the tension discs for any foreign
material that could prevent the discs from
funconing properly.
1
2
3
4
5
6

Page 8 Regalia Service Manual
Secon 1: General Observaon: Quick Set Tension
Assembly - Replacing the Take-up Spring
NOTE: the detent washer is placed with the
detents away from the knob on the Quick Set
Tension assembly.
1. Remove the following parts from the assembly:
knob, detent washer, cone spring with long tail,
spring base and two tension discs.
2. Loosen the set screw under the Quick Set
Tension assembly on the front cover casng and
pull the tension assembly out just far enough to
loosen the set screw on the barrel (step 4), so
the center split bolt can be removed from the
assembly.
3. Loosen the set screw on the barrel, remove the
center split bolt.
4. Wiggle and push in on the tail of the spring unl
the take-up spring pops out of the barrel.
ÂIMPORTANT: Be careful not to pull the
assembly out too far so as to pull o the
wire e internally, which protects the
tension assembly cable from interfering
with the take-up lever.

BabyLock.com Page 9
5. Replace the damaged take-up spring with a new
take-up spring (QM10197). It is recommended to
have a few take-up springs in stock.
6. Replace the split bolt, adjust the take-up spring
strength, see Five Checks on the next page. With
the correct take-up spring strength, push the split
bolt all the way in to the barrel and ghten the
barrel set screw loosened in step 4.
Shoulder
7. Ensure that the top tension barrel is pushed into
the shoulder (Assembly is removed to allow view of
shoulder.)
8. Align the straight vercal part of the take-up spring
up at 12 o’clock when in its rest posion.
9. Replace the parts removed in step 1.
Secon 1: General Observaon: Quick Set Tension
Assembly - Replacing the Take-up Spring (Connued)

Page 10 Regalia Service Manual
Five Checks When Replacing the Take-up Spring:
1. With the take up spring inside the barrel, reinstall the center split bolt.
2. Rotate the center split bolt clockwise to make the spring stronger or counterclockwise to make the spring
weaker. To test: the spring should return all the way to the right end of the slot, regardless of how lightly it
is moved to the le. The spring should be just strong enough to always return clockwise to the end of the
slot.
ÂIMPORTANT: The strength of the spring is crical. If it is too weak or too strong, it will not take the
thread up properly and this will cause stching issues.
3. With the spring strength set properly, ensure the center split bolt is pushed rmly all the way into the
barrel and ghten the barrel set screw onto the center split bolt.
4. Make sure the top tension assembly is pushed all the way into the shoulder on the front cover.
5. Rotate the enre tension assembly to set the straight part of the take-up spring up toward 12 o’clock when
it is in its rest posion, and then ghten the front cover set screw onto the tension assembly.
Secon 1: General Observaon: Quick Set Tension
Assembly - Replacing the Take-up Spring (Connued)

BabyLock.com Page 11
Secon 2: Removal of the Front Cover
1. Remove the small hex screw on the back power
inlet module closest to the three power prongs
with a 2 mm hex tool.
2. Remove the nose cover screw with a 3 mm hex
tool. Remove the nose cover.
3 Remove the needle plate screws with a #3 at
screwdriver. Remove the needle plate.
4. Loosen the levelling screw 1 full turn with a 5 mm
handle hex tool This will take any bind o the two
large lower screws in the next step.
UCAUTION: Make sure the machine is unplugged from the wall before removing the front cover or
whenever working on the machine.
Tools Required: 2 mm, 3 mm, 4 mm, 5 mm handle Allen, 4 mm L Allen, #3 at screwdriver.

Page 12 Regalia Service Manual
5. Remove the two large lower frame screws with a
4 mm hex tool.
6. Remove the large center upper frame screw with a
4 mm hex tool.
7. Remove the two large and three small front cover
screws (5 total) circled with 4 mm and 3 mm hex
tools respecvely.
Secon 2: Removal of the Front Cover (Connued)

BabyLock.com Page 13
Secon 2: Removal of the Front Cover (Connued)
10. Open the front cover carefully and remove the
front wiring harness from the control board. This
harness contains the wiring for the Quick Set
Tension, the thread break sensor and the right
throat light.
NOTE: Once the front cover is removed
and the wiring harness in the above step is
disconnected, neither throat light will work
because the right and le throat lights are
wired in series.
8. Remove the ve large front cover screws (5 total)
circled with 4 mm hex tool.)
9. Separate the front cover. Make sure the take-up
lever does not get caught in the front cover slot.
ÂIMPORTANT: The take-up lever is very hard
and will break, not bend.

Page 14 Regalia Service Manual
Secon 3: Regalia Lubricaon
#1 Red
Use Lube #1 (Red) in the seven places shown below, on each side of the bearing, between the
bearing and the sha (7 places).
Lubricaon Schedule The Regalia lubricang schedule should be followed every 24 months or
10 million stches whichever comes rst, to ensure top mechanical performance.
1
#2 Blue
Use Lube #2 (Blue) between the bearing outer
diameter and the bearing support at one corner on
each of the seven bearing retainers (7 places).
2
1 1 1
1 11

BabyLock.com Page 15
1 (Also lubricate two lower
bearings, shown below)
1
1
1
1
#1 (Red) OY 68
Needle Bar and Presser Bar Bearings
The needle bar and presser bar both have
two bearings, an upper and lower.
Place one drop on the side of the needle
and presser bars on the top two bearings
and also on the boom two bearings as
shown in the boom photo.
Work the oil up into the boom two
bearings by turning the hand wheel for the
needle bar and pushing up on the presser
bar to work the oil up into the bearings
(4 places).
Hopping Block Mechanism
Place one drop on each side where the
moving part is against the hopping block
bearing (2 places).
1
1
Secon 3: Regalia Lubricaon (Connued)

Page 16 Regalia Service Manual
3 (orice located a lile
behind the top radius.)
3
#3 (Yellow) GLY 2100
One drop per orice,
arculang link, take-up lever
and needle bar driver
(3 places).
#4 (Green) IsoFlex NCA-15
Inside caged needle bearings
(2 places).
Secon 3: Regalia Lubricaon (Connued)
3
4
4
5
5
5
#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 liing link
and the hopping-mechanism
liing arm (4 places).
5

BabyLock.com Page 17
#6 Purple
Apply one drop of Lube #6 (Purple), to the raceway of the bobbin case support two to three mes per day
or aer each bobbin change. This applicaon is based upon sewing for eight hours of machine me. If the
machine is used less, lubricate the hook less frequently. Aer the lubricaon of the hook, it is recommended
that you sew on scrap material for a few inches before resuming sewing on the quilt. Failure to do so may
result in oil stains on the quilt.
Secon 3: Regalia Lubricaon (Connued)

Page 18 Regalia Service Manual
Hook-sha ming pulley
Tools needed: 2.5 mm handle hex tool
NOTE: The hook-sha ming pulley rotates in
the opposite direcon as the main sha ming
pulley. Carefully NOTE the labeled rst screw.
NOTE: The hook-sha collar normally does
not have a at, but on the Regalia machines
it does; however it is not for ming. The hook
sha pulley rst screw is xed on another
hook sha at.
Important Hook-Sha NOTEs
The hook-sha turns two mes per stch and rotates
in the opposite direcon as the main sha. Please
carefully NOTE which screw is the rst screw in the
direcon of moon and on the at.
The hook-sha pulley is set to a specic seng from
the end of the sha to allow proper needle-to-hook
distance adjustment. Adjust the collar to remove ax-
ial play, not the hook-sha pulley. The seng can be
thrown o, which may make needle-to-hook distance
adjustment impossible.
The Regalia ulizes long collars with two screws in line
to help prevent the collar from pping when ght-
ened, causing variaon of ghtness or play, as the
collar rotates 360°. To ensure that there is no ght-
ness or play, the collar should be checked through a
full rotaon unl it has minimal ghtness and
minimal play.
Secon 4: Checking and Securing Flats and Screws
First Screw, First Posion Rule
The rst screw is 120 degrees before the 2nd screw
when the handwheel is turned in the direcon of
rotaon. The rst screw in direcon of rotaon goes
on the at.
120 o
Position 2
Direction of
Rotation / motion
Position 1
NOTE: First screw in direcon of moon goes
on the at. The rst screw is 120 degrees
before the 2nd screw. The 2nd screw is 240
degrees before the 1st screw.
Hook-sha Timing
Pulley 1st screw

BabyLock.com Page 19
Secon 4: Checking and Securing Flats and Screws
(Connued)
The Regalia 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 would have to break when something goes wrong.
The hook is designed to be adjusted without removing the front cover.
First check the torque specicaons chart on page 5,
then check the following locaons, making sure that
the rst screw of a med component has been xed
rmly on the respecve at on the sha:
1. The hook-sha ming pulley
(2.5 mm handle hex).
2. The Pitman crank
(5 mm L hex tool)
3. The take-up lever driving link (
(3 mm handle hex tool )
4. The main sha ming pulley
(2.5 mm handle hex tool)
NOTE: The screws are generally posioned
120 degrees apart. When the rst screw in
Direcon of Moon (DOM) (Posion 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 brass counterweight posion is
crical both axially and rotaonally.
NOTE: It is important to check that the brass
counterweight ghtening procedure did
not create a ght arm sha condion. If so,
readjust the counterweight again unl there is
no ghtness and minimal-to-no end-play. This
is checked by rotang the sha and checking a
few mes through a full 360° rotaon of
the sha.
Counterweight Timing
The counterweight has a slit and can be adjusted. It is
not set on a at for ming. Set counterweight ming
as follows:
• First Pitman screw straight up, pitman straight
edge vercal and aligned parallel with the bearing
retainer strap.
• The counterweight slit is straight up with screws on
top facing straight out.
• Tighten very rmly with an L hex tool.
Pitman Crank 1st screw
1st screw Main
Shaft Timing
Pulley on at
Take-up Lever Driving Link 1st screw
Flat
Counter weight
slit straight up
(vertical)
Pitman straight edge
straight up (vertical)
Counter Weight Slit
straight up (vertical)

Page 20 Regalia Service Manual
Secon 5: Axial Play Check and Adjustment
Axial or end play on shaing can result in noise, wear
and faulty sewing.
Check:
1. Check the main sha by pushing and pulling on the
hand wheel.
NOTE: A small amount of main sha axial play
is permissible. Too much main sha play may
cause noise and/or stching issues.
Remove play here
Test left to right
If a correcon is necessary:
• Remove the front cover.
• Loosen the counterweight screws
(3 mm handle Allen)
• Adjust so that minimal to no play is detected.
• Provisionally set the screws.
• Check that the sha has minimal play and no
ghtness, from the collar being too ght, by
rotang the sha through a few 360o rotaons.
• Check that the ming of the eccentric is sll correct
(see counterweight ming page 17).
• Fully ghten the screws.
• Check sha again for play or ghtness.
2. Check the hook sha by pushing and pulling
the hook.
If a correcon is necessary:
• Remove the front cover.
• Remove the play by loosening the hook-sha
thrust collar (not the hook-sha ming pulley) and
adjusng out any axial play.
• Check for proper seng by rotang sha through a
few 360o rotaons.
Collar set screws
Take out play here