Brother International LK3-B438E MKII Instruction Manual - English
Brother International LK3-B438E MKII Manual
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- Brother International LK3-B438E MKII | Instruction Manual - English - Page 1
LK3-B438E - Brother International LK3-B438E MKII | Instruction Manual - English - Page 2
you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions below and the explanations given in the instruction manual. With industrial sewing machines, it the symbol at left means "you must make the ground connection".) LK3-B438E Mark II i - Brother International LK3-B438E MKII | Instruction Manual - English - Page 3
the wall outlet. Lightning may cause problems with correct operation. Installation Machine installation should only be carried out by a qualified technician. Contact your Brother dealer or a qualified electrician for any diarrhoea. Keep the oil out of the reach of children. ii LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 4
to the machine. Use only the proper replacement parts as specified by Brother. If any safety devices have been removed, be absolutely sure to re Any problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty. LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 5
connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur. 4 Direction of operation 4 Eye guard Thread take-up solenoid cover Finger guard Thread take-up cover 2 Belt cover 3 1 Motor cover iv LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 6
..... 31 10-4. Adjusting the needle clearance .......... 31 10-5. Adjusting the shuttle race thread guide 31 10-6. Adjusting the thread take-up amount 32 10-7. Adjusting the movable knife 32 OF ERROR CODES 49 15.GAUGE PARTS LIST 51 16.TROUBLESHOOTING 52 17.OPTIONAL PARTS 55 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 7
iSpool stand oThread take-up lever Safety devices; !0Finger guard !1Eye guard !2Thread take-up cover !3Belt cover !4Motor cover !5Thread take-up solenoid cover 1 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 8
2 . SPECIFICATIONS 2 . SPECIFICATIONS 2-1 . Specifications Stitch formation Single needle lock stitch Maximum sewing speed 2,500rpm Maximum pattern size 0 - 6.4 × 0 - 6.4 mm Needle TQ × 1#12 Dimensions of buttons that can be sewn Outer diameter of button 8 - 30 mm (Use the optional - Brother International LK3-B438E MKII | Instruction Manual - English - Page 9
8-8 1 24 12 4 8-8 3 26 13 10-10 1 28 27 *3 14 *3 28 4 *3 15 *3 29 12-12 6-6 8-8 10-10 12-12 1 32 3.4mm 3.4mm 0 26 0 30 0 34 0 38 3 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 10
foot switch depressed until sewing of the other side starts, or press the foot switch once more after sewing of the first side is completed. LK3-B438E Mark II 4 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 11
3.4mm 3.4mm 40 4 6-6 0 26 41 8-8 0 30 42 * 43 * 44 * 2 Do not use the button lifter spring. 10-10 6-6 10-10 0 34 0 26 2.4mm 3.4mm 0 34 5 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 12
carried out by a qualified technician. Contact your Brother dealer or a qualified electrician for any electrical work not secure, you run the risk of receiving a serious electric shock, and problems with correct operation may also occur. Install the belt covers to the machine LK3-B438E Mark II 6 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 13
center of the V groove in the motor pulley q is aligned as closely as possible with the center of the belt hole in the power table. 7 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 14
q. 4. Install the power switch !0 with the two screws !1. 5. Secure the power switch cord with the three staples !2. 6. Pass the motor cord through the cord hole !3. LK3-B438E Mark II 8 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 15
in the work table so that the notches are aligned with the tabs in the oil pan, and secure them in place with the nails w. 9 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 16
hole. 3-10 .Installing the liquid cooling tank, optional w q 1. Remove the rubber plug, and then push the liquid cooling tank q. 2. Tighten it with the set screw w. LK3-B438E Mark II 10 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 17
not secure, you run the risk of receiving a serious electric shock, and problems with correct operation may also occur. Red White Black Yellow/Green Connect to the power switch. However, the black wire is insulated to the inside of the box and is not used. Connect to ground 11 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 18
cords do not get pulled when the machine head is tilted back gently. 11. Tighten the cover (main P.C. board mounting plate r) with the six screws e. LK3-B438E Mark II 12 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 19
assembly. NOTE: Use brother specified V-belt (belt problems; • Noise & vibration become large. • Needle up stop position becomes unstable. • Error message [E-50] is displayed. Check that the motor is positioned so that the V- belt is straight. (Fig.1) V-belt 13 Sewing machine Motor Fig.1 LK3-B438E - Brother International LK3-B438E MKII | Instruction Manual - English - Page 20
rubber plug !5. * Note that the spring !6 will come out when the screw !4 is removed. 2. Turn foot switch support plate B !3 back to front, and then install it with the bolt !7, spring washer !8 and flat washer !9 as shown referring to "Setting the presser mode" on page 41. LK3-B438E Mark II 14 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 21
Installing the button tray q e w r q Assemble the spool stand q while referring to the spool stand instruction manual, and then install the spool stand q at the right side of the work table. 1. Install the button guard assy w to the face plate q with the two screws e. 15 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 22
more oil on the felt of the shuttle race base, problems with sewing may result, so add oil to the felt until it is slightly soaked. NOTE 4: Use only specified Brother oil (Nisseki Sewing Libe 10) for the machine oil liquid cooling tank w, fill it with silicon oil (100 mm2/s). LK3-B438E Mark II 16 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 23
u →X-SCALE indicator i →Y-SCALE indicator o →SPEED indicator !0 →COUNTER indicator !1 u PROGRAM NO. indicator ..... Illuminates when the SELECT switch y is pressed to shown the program number setting. 17 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 24
....... Used to set and select user programs. !4 Display window This display window will indicate the current statu for the selected menu, error or memory switch. LK3-B438E Mark II 18 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 25
has been completed to make sure that the needle drops down into the hole of the button. P PROGRAM NO. X-SCALE y Y-SCALE SPEED COUNTER SELECT !2 19 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 26
7 and 8 to ON. When DIP switch 7 is ON ... The sewing pattern cannot be enlarged. When DIP switch 8 is ON ... The program number cannot be changed. LK3-B438E Mark II 20 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 27
the arrow, it will be easier to open the tension disc w and pull the thread through. q w [When using the liquid cooling tank] Approx. 40mm 21 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 28
bobbin winder thread tension stud w counterclockwise. 8. To wind more thread onto the bobbin, loosen the set screw t and pull the bobbin presser q outward. t q w Case A q Case B LK3-B438E Mark II 22 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 29
turns in the direction of the arrow when the thread is pulled at this time. 7-6 . Thread tension reference guide Thread #60 or equivalent Upper thread tension (N) Lower thread tension (N) Thread take-up spring height (mm) mm when the thread take-up lever is not used. 23 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 30
left. (The thread take-up amount will become greater.) * When sewing thin material, move arm thread guide Rq to the right. (The thread take-up amount will become less.) 7-6-6. Thread take-up amount upward. * To increase the thread take-up amount, move the stopper w downward. LK3-B438E Mark II 24 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 31
the accessory spring w q e r t If you would like the button to be raised up more after it is sewn, install the accessory spring. 1. Install the spring support q with the bolt w. 2. Install the spring e with the washer r and the screw t. 25 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 32
, or keep pressing it until the second sewing operation starts. 5. Once sewing is completed and the thread has been trimmed, the button clamp will rise. LK3-B438E Mark II 26 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 33
shuttle race body w and the shuttle hook e. e w 3. Clean all the dust and thread ends from around the driver r, the top of the rotary hook thread guide and the shuttle race. LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 34
oil on the felt of the shuttle race base, problems with sewing may result, so add oil to the felt until it is slightly soaked. Use only specified Brother oil (Nisseki Sewing Libe 10) for the machine oil using the liquid cooling tank w, fill it with silicon oil (100 mm2/s). w LK3-B438E Mark II 28 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 35
. 9-6 . Checking the needle Always check that the tip of the needle is not broken and also the needle is not bent before starting sewing. 29 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 36
technician. Ask your Brother dealer or a qualified support e, place it as shown in the illustration so as not to clamp the felt t, and then gently press the felt t and the wick y until they are at the same height as the rotary hook race. * Return the support w to its original position. LK3-B438E - Brother International LK3-B438E MKII | Instruction Manual - English - Page 37
race thread guide q by pushing it in the direction of the arrow so that the needle groove is aligned with the center of the needle plate hole. NOTE: If the shuttle race thread guide is in the wrong position, thread breakages, soiled thread or catching of the thread may occur. 31 LK3-B438E Mark - Brother International LK3-B438E MKII | Instruction Manual - English - Page 38
the index bark B on the needle plate when the sewing machine in the stopped position and the movable knife q is moved toward the index mark. LK3-B438E Mark II 32 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 39
from the needle hole plate !3. 6. Place the thread trimming connecting rod uonto the connecting rod lever pin i, and then install to the needle plate y. 33 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 40
large, the button clamp will not be raised. * If the button clamp cannot be raised or lowered, error code "E-61" or "E-63" will be displayed. LK3-B438E Mark II 34 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 41
holder body w by moving it. 2. Check that the needle will go through the button hole with no contact. (Refer to "6. CHECKING THE SEWING PATTERN".) q w 35 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 42
. 30mm) Approx. 20mm 1. Loosen the set screw w and move the wiper arm support e up or down to adjust so that the clearance between the top of the thread guide connecting plate t up or down so that the thread wiper is approximately 20 mm from the needle when it is at the standby position. LK3-B438E - Brother International LK3-B438E MKII | Instruction Manual - English - Page 43
normally always turn off the power when changing DIP switch settings. 3. Press the TEST switch w again to return the display to the normal condition. 37 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 44
and user program settings to be cleared. • If the optional emergency stop switch has been installed, you should reset memory switch No. 10 to ON. LK3-B438E Mark II 38 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 45
to a desired position, carry out steps 2. to 6. above while the display window y is flashing. The stitch pattern will not be moved at this time. 39 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 46
ma- chine will start sewing. 4. If you press the TEST switch e or the SELECT switch q, the display will return to showing the bobbin thread counter. LK3-B438E Mark II 40 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 47
12 . CHANGING FUNCTIONS USING THE DIP SWITCHES 12. CHANGING FUNCTIONS USING THE DIP SWITCHES 12-1. Operation panel DIP switches The operation panel DIP switches q are used to change functions which might need to be changed depending on the sewing conditions. NOTE: Always turn off the power - Brother International LK3-B438E MKII | Instruction Manual - English - Page 48
the upper shaft stops, to return the needle bar to close to its highest position. Area checking of the sewing data is not carried out. LK3-B438E Mark II 42 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 49
recording. * The menu indicators ( e to i ) will all illuminate and "p1" will appear in the display to indicate that user program No.1 is currently selected. 43 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 50
the data in user program P2, the contents of P3 will be transferred to P2, and the contents of P4 will be transferred to P3. LK3-B438E Mark II 44 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 51
opens and closes once (practice operation). * Set to ON at the time of shipment from the factory, and when all memory settings are initialized. 45 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 52
timing for the second stitch at the sewing start. Changes the feed timing for the first stitch at the sewing start. - - - - memo-40 - - memo-4F - -- LK3-B438E Mark II 46 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 53
indicators (r to i) will all illuminate and "c1-1" will appear in the display window !0 to indicate that the cycle sewing program No.1 is currently selected. 47 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 54
be cleared. NOTE: If you clear a user program after any cycle sewing programs have been recorded, all recorded cycle sewing programs will also be cleared. LK3-B438E Mark II 48 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 55
the problem. Code E-13 E-20 E-21 Cause Machine specification select connector is not connected properly. Problem with tension. (Refer to "3-14. Installing the V-belt".) Refer to "16. Troubleshooting". Turn off the power and check the connection of presser sensor connector P1. 49 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 56
the power, and turn it back on. If the error continually occurs, contact a qualified service technician. Corrupted EEPROM data, or main PROM version has been upgraded. Press the RESET switch segment LED alphabet Panel display Text display A b c d E F 6 H L o LK3-B438E Mark II 50 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 57
S52074-001 1.5 2 2.5 3 • Needle hole plate HS S40917-001 HT S40925-001 HU S52079-001 HV S52080-001 φ3.6 1.5 φ3.6 0.8 φ2 HW S52081-001 φ2 HX S52082-001(Standard) φ3.6 1.2 φ2 φ3.2 1.5 φ1.6 φ3.2 0.8 φ1.6 φ3.2 1.2 φ1.6 51 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 58
16. TROUBLESHOOTING Problem Cause Check 16. TROUBLESHOOTING Remedy Page Button clamp does not rise. Button clamp lifter amount is too great. Presser is contacting Upper thread is too short. Thread take-up lever Adjust the thread 32 stroke take-up lever stroke. LK3-B438E Mark II 52 - Brother International LK3-B438E MKII | Instruction Manual - English - Page 59
16. TROUBLESHOOTING Problem Cause Check Remedy Page Upper thread breaks. Upper thread tension is too strong. Upper thread tension Needle is installed Bent needle Replace the needle. Needle is too thin. Needle and thread Use the correct needle for the material. 53 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 60
Problem Cause Check 16. TROUBLESHOOTING Needle bar lift amount Shuttle race thread guide position Shuttle race thread guide position Upper thread tension. Sharpen or and height Needle is striking the button. Needle down setting LK3-B438E Mark II Adjust the lower thread tension. 23 Adjust the - Brother International LK3-B438E MKII | Instruction Manual - English - Page 61
using synthetic threads. Fill the tank with silicone oil (100 mm2/s). s Solenoid thread wiper This wipes the thread independently of the work clamp operation. 55 LK3-B438E Mark II - Brother International LK3-B438E MKII | Instruction Manual - English - Page 62
INSTRUCTION MANUAL BROTHER INDUSTRIES,LTD. NAGOYA,JAPAN Printed in Japan 118-V38 S91V38-002 2000.02. B (1)
LK3-B438E
INSTRUCTION MANUAL
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
ELECTRONIC LOCKSTITCH BUTTON SEWER
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