JUKI TL-2010Q User manual

SERVICE Manual
Tl-2010Q/2000Qi
1-nEEDlE lOCKSTITCH SEWInG MaCHInE WITH
auTOMaTIC THREaD TRIMMER FOR PROFESSIOnal

CONTENTS
[1] SPECIFICATIONS OF TL-2010Q/2000Qi....................................................... 1
[2] NAMES OF COMPONENTS ........................................................................... 3
[3] DISASSEMBLY AND ASSEMBLY .................................................................. 3
[4] PRINTED CIRCUIT BOARD DIAGRAM (CONNECTOR LAYOUT) ............. 15
[5] ADJUSTMENTS OF COMPONENTS ........................................................... 16
WARNING :
To avoid the risk of re, electric shock, injury to persons or damage to components, especially keep the
following :
• When disassembling, assembling or adjusting the sewing machine, remove the power plug.
• When assembling, be careful about the electrical cord being caught with other components,
damage to the covered parts of the cord or miswiring.
• When replacing the part(s), use the genuine part(s).

–1 –
[1] SPECIFICATIONS OF TL-2010Q/2000Qi
(1) Power switch
ON•OFF 2-step changeover switch (common to lamp) located at the belt cover section of the right-hand
side of main unit.
(2) Drive control components
Drive : Built-in motor timing belt method
Control : Foot pedal controller method 50 to 1,500 sti/min
Low speed rotation of 50 sti/min while needle up/down switch is ON
(3) Table, stand and handle components
Main unit : Portable type main unit with soft case (Case is folded in two and packed with main unit.)
One-touch type auxiliary table knee lifter is provided as standard. (Packed together)
Handle : Pull-up/down from machine main unit type
Table/stand: Separately sold fully-sunken type table and stand can be used.
(4) Arm and bed components
Material : Aluminum die casting arm and bed separate body type
Bed form : Flat bed portable type
(5) General mechanism
1. Thread take-up : Slit type link thread take-up for one-touch threading
2. Hook : DB type horizontal full-rotary hook
3. Pressing pressure adjustment : Stepless adjusting screw with pressing pressure indicator method
4. Lighting device : Built in face cover Switch : Slide type Lamp : Halogen lamp
5. Needle thread post : Two posts for small thread spool and large thread spool
Thread guide of thread post is of draw-out type and capable of
one-touch threading
6. Bobbin thread winder : One-touch action : Starting method by controller Automatic stop when
bobbin thread winding completed
7. Needle thread threading : One-touch threading from thread spool to needle tip
8. Presser foot : Commercially-available presser foot for industrial sewing machine
(SL2) can be used. (Setscrew type)
9. Lift of presser foot : By lever : 7 mm Max. by lever : 10 mm By knee lifter : 12 mm
10. Thread tension : Disk pressure adjusting type with simplied disk pressure scale
11. Drop feed : 2-step changeover by knob method (Feed dog : UP : DOWN)
12. Power switch : ON • OFF 2-step
(6) Feed mechanism
1. Feed amount adjustment : Dial method ...... Stepless 0 to 6 mm
2. Reverse feed stitch : Lever method .... Feed amount conforms to that of normal feed stitch.

–2 –
(7) Special mechanism
1. Automatic thread trimming : Thread trimming switch is used in common for pushbutton type and
for external foot pedal switch type.
Switch fails to work even when pressing it within two seconds after
the rotation of thread trimmer.
2. Needle bar stop position : Electric brake stop method
Stop by controller : Down stop
Stop by automatic thread trimming : UP stop
Stop by bobbin winder : UP stop
3. Automatic needle hole threading : Hook section rotates and automatically returns by lowering threading
lever.
4. Needle up/down switch : Switch is of pushbutton type and up/down stop can be performed by
half rotation of main shaft when operating switch for a short period of
time. When switch is continuously held ON, sewing machine
continuously runs at a speed of 80 sti/min until switch is turned OFF.
5. Prevention of reverse setting of needle : Needle is attachable to normal direction only.
6. Motor protection
Overcurrent : When motor is locked for 0.5 to 1 second due to sudden overload,
motor power is automatically turned OFF and returns to the ON state
immediately.
Overheat : When motor temperature has abnormally risen, motor power is turned
OFF(thermal cut) and returns to the ON state when temperature has
fallen.
(8) Dimensions and weight
Main unit : 452W x 219L x 350H (mm)
Weight : 11.5kg
(9) Power consumption
Whole sewing machine : 120V 1.4A 60Hz

–3 –
[2] Names of Components
[3] Disassembly/assembly
Page
Outer Components
1. Arm cover asm. ...................................... 4
2. Belt cover and motor cover .................... 4
3. Face plate asm. ...................................... 4
4. Bed cover mas. asm. .............................. 5
5. MAIN circuit board asm. ......................... 5
Function components
1. Motor asm. and transformer asm. .......... 5
2. Handwheel and clutch ............................ 6
3. Thread tensioner asm. ........................... 6
4. Presser bar ............................................. 7
5. Needle bar .............................................. 7
6. Thread take-up ....................................... 8
7. Reverse feed stitch lever ........................ 8
8. Idler ........................................................ 8
9. Stitch dial ................................................ 9
10. Automatic thread trimming switch case .. 9
Page
11. Wire holder ............................................. 9
12. Knee lifter lever .................................... 10
13. Hook driving shaft pulley ...................... 11
14. Hand lifter lever .................................... 12
15. Drop-feed knob ..................................... 12
Automatic thread trimming components
1. Looper mas. asm. ................................. 13
2. Moving knife arm
installing plate mas. asm. ..................... 13
3. Moving knife base mas. asm. ............... 14
4. Thread trimming solenoid mas. asm. ... 14
Indicating needle of
presser spring regulator
Face cover
Pressure indicating plate
Thread take-up thread guide
Thread take-up spring
Presser bar connection thread guide
LED lamp
Needle bar thread guide
Needle bar thread bracket
Presser spring regulator
Thread guide base
Side cover
TL-2000Qi
Thread guide No.1
Standard presser foot asm.
Arm cover asm.
Throat plate asm.
Bobbin winder shaft
Thread take-up spring adjusting plate
Belt cover
Handwheel
Stitch dial
Speed limit vr knob (only for TL-2010Q)
Automatic thread trimming switch
Reverse feed stitch lever
Hole for knee lifter lever setting
Bed cover rubber seat
Bed cover
Drop-feed knob
Thread guide rod
Needle threader lever
TL-2010Q
First tention
Needle up/down switch
Hand lifter lever

–4 –
1. Arm cover asm.
3. Face plate asm.
Preparation
™Remove arm cover.
2. Belt cover and motor cover
Outer Components
1Arm cover setscrew
SM5042005SN
3Arm cover
6Convex of presser
spring regulator knob 5Slit of presser regulating screw
3Face plate asm.
1Lamp connector
5Face cover
2Face plate asm. setscrew
SL5040631SE 6Hand lifter lever spring
4Indicating needle of
presser spring regulator
2Motor cover setscrew
SM5041255SN
1Belt cover setscrew
SM5041255SN
4MAIN circuit
board case cover
2Bobbin
winder
connector
Disassembly Assembly Point
™Remove two 1setscrews.
™Disconnect and remove 2con-
nector.
™Insert 2connector.
™Align 6convex with 5slit and
tighten the setscrew.
™There should be no torsion or
distorsion in presser spring regu-
lator.
™Align precisely slit portion with
convex portion.
™Do not press each lead wire.
Disassembly Assembly Point
™Remove four 1setscrews and
remove belt cover.
™Remove three 2setscrews and
remove motor cover.
™Attach belt cover and tighten 1
setscrews.
™Attach motor cover and tighten
2 setscrews.
™There should be no difference
in level between belt cover and
front face of frame.
™Make motor cover come closely
contact with belt cover.
Disassembly Assembly Point
™Disconnect 1connector and 6
remove.
™Remove 2setscrews and re-
move 3face plate asm.
(together with face cover).
™Attach 3face plate asm., tighten
it with face plate asm. 2set-
screws, and attach 6hand lifter
lever spring.
™Insert 1connector.
™There should be no difference in
level around the cover when face
cover is closed.
™
5should not come in contact
with 4indicating needle.

–5 –
5. MAIN circuit board asm.
Preparation
™Remove arm cover asm.
™Remove MAIN circuit board case
cover and lamp connector.
Note) 3Setscrew to set the
circuit board and cover
to circuit board case
Do not insert in the
reverse direction.
(See page 15.)
Do not loosen this
screw.
4. Bed cover mas. asm.
1. Motor asm. and
transformer asm.
Preparation
™Remove arm cover asm.
™Remove belt cover and
motor cover respectively.
Make a memorandum of
cord wiring.
1Bed cover setscrew
SM5051255SN
1Bed cover setscrew
Function Components
2Power
transformer
setscrew
SM5040855SN
3Motor setscrew nut
1Motor asm.
setscrew
SM5050855SN
5-1
5Cord guide
plate setscrew
SM5030655SN
4
2MAIN circuit board case setscrew A
SL5030831SF
3MAIN circuit board setscrew
4MAIN circuit board case
setscrew B SM5031401SE
Porality exists.
Never loosen this screw.
6clip band (3 places)
Disassembly Assembly Point
™Remove six 1setscrews and re-
move bed cover.
™Attach bed cover and tighten set-
screws.
Disassembly Assembly Point
™Remove 7 connectors of each
lead wire.
™Cut 6clip bands (3 places).
™Remove 2setscrews and 4set-
screw, and remove circuit board.
™Press play of circuit board to at-
tach circuit board to the front side
and tighten two setscrews.
™Insert each lead wire into con-
nectors.
™Read the note and understand it.
™Ther are color indications on the
circuit board for inserting connec-
tors.
Disassembly Assembly Point
™Remove cord guide plate 5set-
screws and 5-1 in previous item,
and cut 6clip band.
™Loosen 4cord presser.
™Remove two 1setscrews and
remove motor asm.
™Remove two 2setscrews and
remove transformer asm.
Make sure of wiring route.
™Attach transformer and tighten
3setscrews.
™Attach motor asm. and tighten
1setscrews.
™Fix it with 4cord presser.
™Attach cord guide plate asm. and
tighten 5and 5-1 setscrew.
™Connect cord guide plate and
cord.
™Loosen 3nuts to adjust motor
tension.
™Belt tension : the belt should sag
3 to 4 mm when center of belt is
applied with 1.96N load.

–6 –
2. Handwheel and clutch
Preparation
™Remove belt cover.
™Remove arm cover.
9Motor pulley
6Groove of
handwheel bushing
8Handwheel bushing stopper pin
4Angle portion of clutch spring
7Convex of handwheel bushing
3Groove of clutch spring support
!0 Groove of handwheel
3. Thread tensioner asm.
Disassembly
™Remove 1setscrew.
™Remove cord guide plate set-
screw and remove cord guide
plate asm.
™Remove 3spring support.
™Move 4in the direction where
clutch spring is released and re-
move clutch spring.
™Face 6to motor side and 8is
hard to drop.
™Draw out 8and remove 9.
Assembly
™Attach 9and enter 8.
™Enter 6groove of bushing to 8
stopper pin and attach bushing.
™Enter 5hook portion of spring
to slit in the center of handwheel
bushing
™Enter 5clutch spring to 3
groove of spring support and at-
tach cord guide plate asm. Then
tighten setscrew.
Point
™Align 7convex of bushing with
!0 groove of handwheel and at-
tach handwheel. Then tighten
setscrew.
™Clearance provided between con-
vex of 3clutch spring support
and clutch plate is 2 ± 0.5 mm.
™See item 12 on page 19 for ad-
justment.
1Handwheel
setscrew
2Handwheel
Disassembly
™Remove 1setscrew.
™Lower presser foot and remove 2
setscrew.
™Remove 3spring together with
4thread tensioner asm. and ad-
justing plate.
Assembly
™Attach 6adjusting plate and 3
spring to thread tensioner asm.
and attach it to frame. Then x it
with 2setscrew.
™Tighten 1adjusting plate set-
screw.
Point
™Place upward the scale of 5
thread tension disk presser.
™See items 9 and 10 on page 19
for adjustment of pressure and
thread take-up spring of stroke.
1Thread take-up spring
adjusting plate setscrew
SL5030801SN
2Thread tensioner setscrew
SM8040602TP
3Thread take-up spring
4Thread tensioner asm.
5Thread tension disk presser
5Hook portion of clutch spring
6Thread take-up
spring adjusting
plate
When removing motor
pulley, remove cord guide
plate setscrews 5and 5-1
in previous item.

–7 –
4. Presser bar
Preparation
™Remove arm cover asm.
™Remove face plate mas. asm.
™Remove presser foot and setscrew.
Disassembly
™Lower 8lever and loosen 1set-
screw.
™Drawing 3u p w a r d , r e m o ve 4
spring.
™Remove 5connection and 6lever.
™Remove regulator 2screw.
™Do not remove 7indicating needle.
3is hard to remove since secrew
mark is attached.
Assembly
™Attach regulator 2screw.
™Set 6lever to frame, and then
set 5connection.
™Attach 4spring when setting
3presser bar from upper side.
Point
™Set 4spring under 7indicating
needle.
™Lower 8lever and temporarily
tighten it at the position where top
end of 3protrudes approximately
4 mm from frame.
For the adjustment, see item 3 on
page 17.
™Needle should not interfere with
presser foot.
Disassembly
™Remove 3and 4.
™Remove 1felt. (Push up needle
bar upper bushing 1felt with 5
and draw it out.)
™Loosen setscrew of 2and 6.
(Pushing needle bar 5upward is
acceptable.)
™Draw out 5upward.
™Remove left 6screw and remove
crank rod.
Assembly
™Attach crank rod and tighten it with
6.
™Perform positioning of needle bar
and tighten needle bar connection
2setscrew.
™Set needle bar and attach 4and
3.
™Insert 1into hole.
™Temporarily tighten 6, and perform
adjustment of vertical height after
attaching threader support plate
asm.
Point
™Position of needle bar is the
place where upper engraved
line of needle bar is aligned
with lower end face of needle
bar bushing at the needle lower
dead point.
See item 2 on page 17 for the
adjustment.
™See item 15 o n page 22 for
height adjustment of threader
hook of threader support plate
mas. asm.
6Presser bar lifting lever
8Hand lifter lever
3Presser bar
2Presser spring regulator
7Indicating needle of
presser spring regulator
4Presser spring
5Presser bar connection asm.
1Presser bar connection setscrew
SM8060502TP
Threader support plate
setscrew (upper)
SL5040631SE
Threader support plate mas. asm.
Threader support plate
setscrew (lower)
SM4040655SN
5. Needle bar
Preparation
™Remove arm cover asm.
™Remove face plate mas. asm.
™Remove presser bar.
™Remove needle bar threading
guide as well.
Needle bar crank
left screw
1Needle bar upper bushing felt
2Needle bar connection setscrew
SM8060510SP
6Needle bar threader guide setscrew
5Needle bar
3Needle bar thread bracket
setscrew A1420-001-000
4Needle clamp