Brother LK3-B448E manual

Please read this manual before using the machine. Please keep this manual within easy reach for quick reference. ELECTRONIC LOCKSTITCH BUTTON SEWER WITH BUTTON FEEDER LK3-B448E / BA-16 INSTRUCTION MANUAL[...]

i LK3-B448E MARK II /BA-16 ............. This symbol ( ) indicates something that you should be careful of. The picture inside the triangle indicates the nature of the caution that must be taken. (For example, the symbol at left means “beware of injury”.) ............. This symbol ( ) indicates something that you must not do. ............. T hi[...]

ii LK3-B448E MARK II /BA-16 Use the sewing machine in an area which is free from sources of strong electrical noise such as high- frequency welders. Sources of strong electrical noise may cause problems with correct operation. Any fluctuations in the power supply voltage should be within ± 10% of the rated voltage for the machine. V oltage fluctua[...]

iii LK3-B448E MARK II /BA-16 This sewing machine should only be used by opera- tors who have received the necessary training in safe use beforehand. The sewing machine should not be used for any applications other than sewing. Be sure to wear protective goggles when using the machine. If goggles are not worn, there is the danger that if a needle br[...]

iv LK3-B448E MARK II /BA-16 c Warning labels ★ The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer. 1 2 Safety devices: q Belt cover , w Thread take-up cover [...]

CONTENTS 1. Name of each part ................................................................................................................. 1 2. Specifications .......................................................................................................................... 2 2-1. Specifications .........................................[...]

8. Sewing ............................................................................................................................... .......... 33 9. Maintenance and inspection .......................................................................................... 34 9-1. Cleaning the rotary hook ............................................[...]

1 1.Name of each part LK3-B448E MARK II /BA-16 1. Name of each part q Power switch w Control box e Operation panel r Foot switch t Motor y T ension release lever u Pulley i Spool stand o Thread take-up lever !0 Button feeder !1 Vibrating bowl !2 Control box !3 Eye guard !4 Thread take-up cove !5 Belt cover !6 Motor cover !7 Thread take-up solenoid [...]

2 2. Specifications LK3-B448E MARK II /BA-16 2. Specifications 2-1. Specifications Maximum sewing speed Maximum pattern size Needle Dimensions of buttons that can be sewn Number of stitches Maximum stitch number Work clamp lifter Rotary hook Wiper device Thread take-up device Data storage method Number of user programs Number of stored data Motor W[...]

3 2. Specifications LK3-B448E MARK II /BA-16 2-2. Program list Sewing patterns are limited as shown in the table below . (Any program is available as long as the needle drops down in the hole of the button.) *3 1 2 3 4 5 6 7 23 8 9 24 25 26 10 11 12 13 27 14 28 15 29 No. of button holes 2 3 4 4 Sewing pattern No. of threads 6 8 10 12 16 20 6 10 12 [...]

4 2. Specifications LK3-B448E MARK II /BA-16 22 *2*3 35 *2*3 16 17 30 18 19 31 45 20 32 33 21 34 46 47 48 49 No. of button holes 4 Sewing pattern No. of threads 6-5 8-7 10-9 6-6 8-8 10-10 12-12 6-6 8-8 10-10 6-6 10-10 6-6 10-10 6-6 8-8 10-10 12-12 No. of crossover stitches 1 1 1 1 1 1 1 0 0 0 1 1 0 0 1 1 1 1 No. of stitches 19 23 27 20 24 28 32 26 [...]

5 2. Specifications LK3-B448E MARK II /BA-16 *2 Do not use the button lifter spring. 36 37 38 39 40 41 42 43 44 No. of button holes 4 Sewing pattern No. of threads 6-6 8-8 10-10 12-12 6-6 8-8 10-10 6-6 10-10 No. of crossover stitches 0 0 0 0 0 0 0 0 0 No. of stitches 26 30 34 38 26 30 34 26 34 Standard sewing length X 3.4mm 2.4mm Standard sewing wi[...]

6 2. Specifications LK3-B448E MARK II /BA-16 This helps to prevent thread breakages caused by friction when using synthetic threads. Fill the tank with silicone oil (100 mm 2 /s). ■ T wo-pedal foot switch The switch has an independent presser switch (left side) and start switch (right side). ■ Solenoid-type thread wiper When sewing without cros[...]

7 3. Installation LK3-B448E MARK II /BA-16 3. Installation • Use the power table which has been specially designed for the B448E. * If using a commercially-available table, process it as shown in the illus- tration below . 3-1. Power table Table/legs assembly 127-Z48-00001 Model code NOTE: The thickness of the table should be at least 40 mm, and [...]

8 3. Installation LK3-B448E MARK II /BA-16 3-2. Installing the motor Install the motor u to the work table with the four accessory bolts q , cushions w , cushion collars e , flat washers r , spring washers t and nuts y . A t t h at t i m e , fix by setting bolts q a little to the right of oval hole on motor . NOTE: T ighten the nuts so that the cle[...]

9 3. Installation LK3-B448E MARK II /BA-16 3-4. Installing the control box 1. Remove the 12 screws q , and then open the covers (panel mounting assembly w and main P .C. board mounting plate e ). NOTE: When opening the cover , hold it securely so that it does not fall down. 2. Install the control box with the four accessory bolts r , cushions t , c[...]

10 3. Installation LK3-B448E MARK II /BA-16 1. Place the washers q and cushions w into the two holes in the work table. * Adjust the height of the machine head to the button feeder by the number of the washers q . 2. After the height is decided, secure them with the nails e . 1. Insert the tabs of the oil pan w into the holes for the cushions q , a[...]

LK3-B448E MARK II /BA-16 11 3. Installation 3-7. Installing the machine head 1. Insert the two hinge assemblies q into the machine head so that they are parallel, and then secure them with the two set screw w . 2. Place the machine head gently on the table. NOTE: Pull the cords e out as shown in the illustration above in order to prevent them from [...]

12 3. Installation LK3-B448E MARK II /BA-16 3-9. Installing the liquid cooling tank, optional 1. Install the vibration bowl q with bolts w , spring wash- ers e , and washers r . 2. Pass the wires from the vibration bowl q through the hole in the table. 1. Mount the control box q to the bottom of the box stay e with screws w . 2. Mount the control b[...]

LK3-B448E MARK II /BA-16 13 3. Installation 3-13. Installing the shooter 3-12. Installing the button feeder 1. Move button feeder base q to the front and rear and left and right as necessary to install it by using hole bolts w , spring washers e and washers r . (And install ground wires ty .) T o vibrating bowl T o control box (For vibrating bowl) [...]

14 3. Installation LK3-B448E MARK II /BA-16 3-14. Connecting the cords 1. Gently tilt back the machine head. NOTE: After tilting back the machine head, do not push the face side or the pulley side from above. 2. Pass the cords q through the hole w in the work table. 3. Gently return the machine head to its original position. 4. Remove the six screw[...]

LK3-B448E MARK II /BA-16 15 3. Installation ■ Button feeder connection Pull on the connector to make sure it will not come disconnected after connecting the pins. ■ Control box (for vibrating bowl) connection Connect the ground wire from the vibrating bowl to the motor . Button feed sensor 6P 9P 7P 20P 20P connector control box White White Red [...]

LK3-B448E MARK II /BA-16 3. Installation 16 ■ Power switch connection 3-15. Installing the button feeder cover Attach the button feeder cover q to the button feeder w with screws e , spring washers r , and washers t . * Be sure to pass the wires through the hole in the cover when attaching the button feeder cover q . A B Power switch connector (c[...]

LK3-B448E MARK II /BA-16 17 3. Installation 3-16. Installing the operation panel The operation panel can be installed to either the top or bottom of the work table. 3-17. Connecting the ground wire CAUTION Be sure to connect the ground. If the ground connection is not secure, you run the risk of receiving a serious electric shock, and problems with[...]

LK3-B448E MARK II /BA-16 3. Installation 18 3-18. Installing the V -belt 1. Gently tilt back the machine head, and then place the V -belt q into the V grooves on the machine head pul- ley w and the motor pulley e . NOTE: After tilting back the machine head, do not p u s h the face plate side or the pulley side from above. 2. Gently return the machi[...]

LK3-B448E MARK II /BA-16 19 3. Installation 3-19. Installing the belt cover 1. Insert the connector of the foot switch e into the connector w of the control box q . 2. Install the foot switch e to the work table leg !2 with foot switch support plate A r , foot switch support plate C t , the bolt y , spring washer u , flat washer i , bolt o , spring[...]

LK3-B448E MARK II /BA-16 3. Installation 20 Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result. CAUTION q e w q 3-21 . Installing the motor cover 1. Install the motor cover q to the motor back cover w with the screws e and the flat washers r . 2. Pass the motor shaft t[...]

LK3-B448E MARK II /BA-16 21 3. Installation 3-24. Adjustment by the accessory spring w e q t r 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 . * The spring is effective for use with the foll[...]

22 4. Lubrication LK3-B448E MARK 2 /BA-16 T urn of f the power switch before starting lubricating, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury . Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto you[...]

LK3-B448E MARK 2 /BA-16 23 4. Lubrication 4-2. Applying grease Do not apply too much grease in the place indicated by the arrow . If too much grease is applied here, the button clamp may not move up and down smoothly and error [E-6 ] may appear on the display . 4-3. Draining the oil 1. Remove and empty the waste oil container q whenever it is full.[...]

LK3-B448E MARK II /BA-16 24 5. Operation 5 . Operation 5-1 . Name and function of each operation panel item SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER q w r e t y u i o !0 !1 !4 q POWER indicator ................... Illuminates when the power switch has been turned on. w RESET switch ............[...]

25 LK3-B448E MARK II /BA-16 5. Operation SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER y i o !0 !1 !4 !2 !3 i X-SCALE indicator ................. Illuminates when the SELECT switch y is pressed to shown the X-scale setting. o Y-SCALE indicator ................. Illuminates when the SELECT switch y i[...]

LK3-B448E MARK II /BA-16 26 5. Operation 5-2 . Operating procedure Program No. X-scale (%) Y-scale (%) Speed (rpm) Factory default 00 * 100 100 2000 Variable range 01 - 49 20 - 200 20 - 200 1,000 - 2,500 SELECT PROGRAM NO. COUNTER X - SCALE Y - SCALE SPEED P SELECT PROGRAM NO. COUNTER X - SCALE Y - SCALE SPEED P SELECT PROGRAM NO. COUNTER X - SCALE[...]

27 LK3-B448E MARK II /BA-16 5. Operation AUTO 1 AUTO 2 OFF BA-1 6 q w 5-3. Operating the button feeder 1. Button feeder switch q AUTO1 ... Buttons are supplied automatically after sewing is complete. A U T O 2 . . . When sewing is complete and the button clamp releases its button, the next button is supplied. OFF ........ Buttons are not supplied a[...]

28 LK3-B448E MARK 2 /BA-16 6. Checking the sewing pattern 7. Depress the foot switch to the second step. Only the feed mechanism will move. The feed mechanism moves forward by one stitch each time the foot switch is depressed. Each time the feed mechanism is moved forward by one stitch, turn the machine pulley by hand and check that the needle goes[...]

29 LK3-B448E MARK II /BA-16 7. Correct use 7. Correct use 7-1 . Selecting the needle and thread TQ × 1 #11 TQ × 1 #12 TQ × 1 #14 Thread #60 #50 Button hole diameter 1.5mm or greater 1.6mm or greater 1.7mm or greater Needle q w q w Approx. 40mm [When using the liquid cooling tank] T urn off the power switch before threading the thread, otherwise [...]

30 LK3-B448E MARK II /BA-16 7. Correct use Do not touch or place anything against any of the moving parts while winding the lower thread, otherwise personal injury or damage to the machine may result. 8. To wind more thread onto the bobbin, loosen the set screw t and pull the bob- bin presser q outward. 1. Place the bobbin all the way onto the shaf[...]

31 LK3-B448E MARK II /BA-16 7. Correct use T urn of f the power switch before removing and replacing the bobbin case, otherwise the machine may operate if the foot switch is depressed by mistake and serious injury could result. q 30mm CAUTION 7-5. Replacing the bobbin case and threading the thread Pull the shuttle race cover q toward you to open it[...]

32 LK3-B448E MARK II /BA-16 7. Correct use Become greater Become less q w w q e q Weaker Stronger 7-6-4. Thread take-up spring tension Loosen the set screw q and turn the tensioner body to adjust the thread take-up spring height. Turn the tension stud q with a screwdriver. 7-6-5. Adjusting arm thread guide R The standard position of arm thread guid[...]

LK3-B448E MARK II /BA-16 8. Sewing 33 8. Sewing Before starting sewing... • Check that the needle bar is at its highest position. T urn the machine pulley so that the index mark q on the pulley is between the marks w on the belt cover . * If the stop position of the machine pulley is not correct, error [E-50] will be displayed, because the wiper [...]

34 9. Maintenance and inspection LK3-B448E MARK 2 /BA-16 9. Maintenance and inspection CAUTION Turn off the power switch before starting any cleaning work, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury. 9-1. Cleaning the rotary hook 1. Pull the large shuttle hook cover toward you to open [...]

35 9. Maintenance and inspection LK3-B448E MARK 2 /BA-16 9-3. Cleaning the eye guard Wipe the eye guard clean with a soft cloth. NOTE: Do not use solvents such as kerosene or thinner to clean the eye guard. 9-4. Checking the needle Always check that the tip of the needle is not broken and also the needle is not bent before starting sewing.[...]

36 10. Adjustments LK3-B448E MARK II /BA-16 Maintenance and inspection of the sewing machine should only be carried out by a quali- fied technician. Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system. T urn off the power switch and disconnect the power cord from the wall outlet at[...]

LK3-B448E MARK II /BA-16 37 10. Adjustments Adjust the needle bar lift amount as described below so that the tip of the rotary hook is aligned with the center of the needle when the machine pulley is turned to raise the needle bar from its lowest position until the second reference line from the top of the needle (reference line B) is aligned with [...]

38 10. Adjustments LK3-B448E MARK II /BA-16 0.01 - 0.08mm Tip Needle center line 10-3 . Adjusting the driver needle guard T urn the machine pulley to align the tip of the rotary hook with the needle center line. Then loosen the set screw w and turn the eccentric shaft e to adjust so that the driver needle guard q contacts the needle. If the needle [...]

LK3-B448E MARK II /BA-16 39 10. Adjustments q q e w r q B A 10-6. Adjusting the thread take-up amount 10-7 . Adjusting the movable knife e w Thread take-up amount (stroke) Become less Become greater At the time of shipment from the factory , the thread take-up amount (stroke) of the thread take-up lever q is set to the standard setting of 5 mm. Y o[...]

40 10. Adjustments LK3-B448E MARK II /BA-16 4. Remove the movable knife i and replace it with a new one. At this time, check that the movable knife i and the fixed knife o cut the thread cleanly . If necessary , adjust by using the appropriate movable knife washer !0 (supplied as accessories). 5. Install the fixed knife o at a distance of 0.5 mm fr[...]

LK3-B448E MARK II /BA-16 41 10. Adjustments A. After the movable knife and fixed knife are properly engaged, tighten the screw as shown in Fig.1. B. Turn the movable knife (in the direction of the arrow) while the screw is still tightened. C. Loosen the screw. D. Turn the movable knife (in the direction of the arrow) while the screw is still loosen[...]

LK3-B448E MARK II /BA-16 10. Adjustment 42 10-9. Adjusting the holding pressure Loosen screw q and turn adjustment screw w so that clamp pressure is as light as possible but high enough so that the material will not slip when pulled lightly . * If the clamp pressure is too high, the buttons may not be fed properly . q w 10-10. Adjusting the positio[...]

43 10. Adjustment LK3-B448E MARK II /BA-16 10-1 1. Adjusting the button clamp height Adjustment 1. After turning on the power switch, turn AUTO 1 or AUTO 2 the feeder switch. 2. The button carrier will move slowly if the foot switch is turned on with the manual switch depressed. The sewing machine will operate in inching mode while the manual switc[...]

LK3-B448E MARK II /BA-16 10. Adjustment 44 2 ± 0.5mm q w e (Approx. 30mm) Approx. 20mm r t 10-12. Adjusting the needle up stop position The needle up stop position is adjusted so that the index mark w on the machine pulley q is inside the mark r on the belt cover e . If adjustment is necessary , loosen the screw t at the “U” mark of the machin[...]

45 10. Adjustment LK3-B448E MARK II /BA-16 10-14. Adjusting the vibrating bowl ● The vibrating bowl arranges all of the buttons face up and feeds the buttons to the shooter . ● Be sure to readjust the vibrating bowl whenever the buttons are changed. ■ If buttons are not fed properly , check the following. 1. Loosen screw w and adjust the gap [...]

LK3-B448E MARK II /BA-16 10. Adjustment 46 10-15. Adjustment for excess buttons in the button shooter 1. T urn the button carrier q by hand in the direction of the arrow , and remove any buttons from the button carrier pin w . 2. With the button carrier q in this position, pull lever e to remove any excess buttons from the shooter at point A. 3. Pr[...]

47 10. Adjustment LK3-B448E MARK II /BA-16 10-16. Button replacement 10-16-1. Adjustment when the button diameter is changed ■ Slide base adjustment 1. Adjust the width of the slide base assembly w to the button width with slide base screw e so that the bottons q pass smoothly . The bed slide base assembly w can be adjusted for button diameters o[...]

LK3-B448E MARK II /BA-16 10. Adjustment 48 10-16-2. Adjustment when the button thickness changes 1. Check to be sure that buttons q are being smoothly sent to the shooter w . If the buttons are not fed smoothly , replace the shooter . 2 . Install accessory spacers (0.4 mm, 0.8 mm, ) as required by the button thickness. 3 . Check to be sure that but[...]

49 10. Adjustment LK3-B448E MARK II /BA-16 1. Turn on the power switch. 2. Check whether or not the feeder switch q is AUTO 1. 3. Press and hold manual switch w and turn the foot switch on. The machine will begin to operate. * At this time, the machine head will be prevented from operating, and error code "E-C3" will be displayed. The buz[...]

LK3-B448E MARK II /BA-16 10. Adjustment 50 10-16-6. Adjusting the needle location Adjustment is required whenever the button carrier is replaced. Make sure the needle is not bent. ■ Horizontal feed position 1. Set the X scale so that the holes A and B in the button are aligned with the point of the needle. (Refer to “Setting the X-scale and Y -[...]

51 10. Adjustment LK3-B448E MARK II /BA-16 4. Gently tilt back the machine head, and then place the V-belt u remove the V grooves on the machine head pulley i and the motor pulley o . NOTE: After tilting back the machine head, do not push the face plate side or the pulley side from above. 5. Gently return the machine head to its original position r[...]

LK3-B448E MARK II /BA-16 10. Adjustment 52 Fig.1 Motor V-belt Sewing machine NOTE: Use brother specified V -belt (belt, VM). The V -belt may stretch slightly when it is first used, so adjust the belt tension after about 3,000 cycles of use. When above belt tension is weak, this will be cause of following problems; • Noise and vibration become lar[...]

53 10. Adjustment LK3-B448E MARK II /BA-16 SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER 1. When the X-SCALE indicator q is illuminated and the RESET switch e is pressed while the TEST switch w is being pressed, the state of the X home position signal will appear on the display window r . · When se[...]

LK3-B448E MARK II /BA-16 10. Adjustment 54 SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER r et 200V 220V 230V 100V 380V 400V 415V Display [090 - 110] [100 - 120] [105 - 125] [100 - 120] Notes “ 100 ” is displayed when the input voltage is 200 V. “ 110 ” is displayed when the input voltage is [...]

55 10. Adjustment LK3-B448E MARK II /BA-16 SELECT BOBBIN.WIND r e q y t o w u i 10-20. Moving stitch patterns • Programs which have already been programmed can be moved up, down and to the left and right. (However, such patterns will be reset if the power supply is turned off or the program number is changed.) • The feed position can be set to [...]

LK3-B448E MARK II /BA-16 1 1. Using the counters 56 11. Using the counters 11-1 . Using the bobbin thread counter r ey t q r ey q u w t w 1. Press the SELECT switch q until the COUNTER in- dicator w illuminates. 2. While pressing the TEST switch e , press the RESET switch r . * The COUNTER indicator w will flash and the counter will switch to bobbi[...]

57 12. Using user programs LK3-B448E MARK II /BA-16 SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER 12.Using user programs Recording a user program 12. Press the TEST switch w . This completes the recording. * The menu indicators ( r to i ) will all illuminate and “p1” will appear in the display t[...]

LK3-B448E MARK II /BA-16 12. Using user programs 58 Clearing the user programs 2. Depress the foot switch to the second step. 3. Check the sewing pattern (see P.20), and then sew the pattern selected. 1. Switch the machine to recording mode by the procedure in steps 2. of recording a user program. 2. Use the DISPLAY SET switches !0 to specify the u[...]

59 13. Using the cycle sewing function LK3-B448E MARK II /BA-16 SELECT PROGRAM NO. RESET COUNTER X - SCALE Y - SCALE SPEED P TEST BOBBIN.WIND P4 P3 P1 P2 POWER B430E Series t !0 !1 e w !2 r y u i q 13. Using the cycle sewing function What is the cycle sewing function? The cycle sewing function lets you program up to four patterns for cycle sewing o[...]

LK3-B448E MARK II /BA-16 13. Using the cycle sewing function 60 1. When “c1-1” is flashing in the display window !0 , press the foot switch to the second step. 2. Start sewing. 3. “c1-1”, “c1-2”, “c1-3” are sewn in order for each article, and when the last-recorded pattern has been sewn, the display returns to “c1-1”. * If you p[...]

61 14. Changing functions using the DIP switches LK3-B448E MARK II /BA-16 q DIPA-1 DIPA-2 DIPA-3 DIPA-4 DIPA-5 DIPA-6 DIPA-7 DIPA-8 Motion when set to ON See “12-2. Setting the presser mode” Presser does not automatically lift after sewing is completed. Two-pedal mode is available. User program mode is available. – The presser does not rise a[...]

LK3-B448E MARK II /BA-16 14. Changing functions using the DIP switches 62 W ait at least 5 minutes after turning of f the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. T ouching areas where high voltages are present can result in severe injury . q DIPB-1 DIPB-2 DIPB-3 DIPB-4 DIP[...]

63 15. Changing special functions using the memory switches LK3-B448E MARK II /BA-16 memo-00 memo-01 memo-02 memo-03 memo-04 memo-05 memo-06 memo-07 memo-08 memo-09 memo-0A memo-0b memo-0c memo-0d memo-0E memo-0F Motion when set to ON At the end of sewing, the feed plate will be returned to the sewing start point via mechanical home position. Butto[...]

LK3-B448E MARK II /BA-16 15. Changing special functions using the memory switches 64 memo-11 - memo-13 memo-19 memo-1A memo-1b memo-14 memo-15 memo-16 memo-17 memo-18 memo-1F Motion when set to ON — Presser position errors are not detected. Needle up stop position errors are not detected. Presser can be moved up and down before the home position [...]

65 16. T able of error codes LK3-B448E MARK II /BA-16 W ait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. T ouching areas where high voltages are present can result in severe injury . Machine motor operation error. E-13 E-20 E-21 E-30 E-3[...]

LK3-B448E MARK II /BA-16 16. T able of error codes 66 E-10 E-11 E-12 E-14 Cause Emergency stop switch was pressed. Emergency stop switch was pressed during sewing. Emergency stop switch is being continually pressed, or emergency switch connection error. Thread breakage detected. Remedy Turn the EMERGENCY STOP switch clockwise to release the lock, a[...]

LK3-B448E MARK II /BA-16 67 17. Adjustment guide refer to this guide when different button are used When button diameter (D) changes Adjust button selector Adjust button guide Vibrating Bowl Shoot Coil assy Button Slide Base Button Catch Plate Feeder Installation Position Machine Head Adjust button adjustment dial Adjust button clamp width When but[...]

LK3-B448E MARK II /BA-16 18. T roubleshooting 68 18. T roubleshooting Check Remedy Problem Cause Page Presser is contacting thread wiper. Thread wiper standby position Distance between button clamp and top of needle plate Button clamp lifter amount is too great. 48 Adjust the position of the thread wiper. Adjust the height of the button clamp to wi[...]

69 18. T roubleshooting LK3-B448E MARK II /BA-16 Check Remedy Problem Cause Page Corners of needle hole plate or bobbin case are damaged. Damage Lower thread tension Lower thread tension is too strong. File smooth or replace the affected part. Adjust the lower thread tension. Lower thread breaks. 28 Needle is installed incorrectly. Needle direction[...]

LK3-B448E MARK II /BA-16 18. T roubleshooting 70 Shuttle race thread guide position Fixed knife blade Shuttle race thread guide position Needle bar lift amount Skipped stitches at sewing end Needle bar lift amount Thread takeup spring tension and height Check Remedy Problem Cause Movable knife does not pick up the thread. Fixed knife is blunt. Thre[...]

INSTRUCTION MANUAL Printed in Japan 151-916 S93V48-002 2000.06. H (1) BROTHER INDUSTRIES, LTD. 15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone: 81-52-824-2177[...]