Brother KE-430F manual

KE-430F BE-438F Please read this manual before making any adjustments. ELECTRONIC DIRECT DRIVE LOCKSTITCH BAR TACKER ELECTRONIC DIRECT DRIVE LOCKSTITCH BUTTON SEWER SER VICE MANUAL[...]

KE-430F , BE-438F This service manual is intended for KE-430F and BE-438F; be su re to read the KE-430F/BE-438F instruction manual before this manual. Carefully read the “SAFETY INSTRUCTIONS” below and the whole of this manual to understand this product before you start maintenance. As a result of research and improvements regarding this produc[...]

KE-430F , BE-438F i SAFETY INSTRUCTIONS [1] Safety indications and the ir meanings This service manual and the indications and symbols that are used on the machine it self are provided in order to ensure safe operation of this machine and to prevent a ccidents and injury to yourself or other people. The meanings of these indications and symbols are[...]

KE-430F , BE-438F ii [2] Notes on safety DANGER Wait at least 5 minutes after turning off the pow er sw itch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present will result in serious injury from electric shocks. WARNING Do not allow any liquids to ge[...]

KE-430F , BE-438F iii CAUTION Sewing This sewing machine should only be used by operators 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, ther e is the danger that if a ne[...]

KE-430F , BE-438F iv [3] Warning labels The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times wh en using the ma chine. If the labels have been removed or are difficult to read, please cont act your nearest Brother dealer. 1 2 T ouching areas where high voltages are pres ent can result [...]

KE-430F , BE-438F v 2559B 2520B 2521B Transformer box (100V/400V system only ) 2522B Rear cove r Solenoid cover Oil tank Finger guard Eye guard Thread take-up cove r Side cover[...]

KE-430F , BE-438F CONTENTS 1. SPECIFI CATIONS ............................... 1 2. NOTES ON HANDLING ........................ 2 3. RELATIONSHIP BETWEEN PROGRAMS AND PATTERNS ........... 3 4. FUNCTION SETTINGS ......................... 6 4-1. List of special functions when power is turned on ..........................................................[...]

KE-430F , BE-438F 9. DISASS EMBLY ................................... 61 9-1. Covers ................................................................. 61 9-2. Work clamp ar m mechani sm................................ 62 9-3. Needle bar mechani sm ........................................ 63 9-4. Upper shaft me chanis m .............................[...]

KE-430F , BE-438F 11-20. Correcting the digita l tension output .............. 125 11-21. Checking the machin e head sw itch ............... 127 11-22. Setting method for standard depression strokes (Foot switch ) ..................................... 127 12. APPLYING GREASE ........................ 129 12-1. Applying grease (Work clamp: KE-430F) .[...]

1. SPECIFICA TIONS KE-430F , BE-438F 1 1 . SPECIFICA TIONS KE-430F Electronic direct drive lockstitch bar tacker BE-438F Electronic direct drive lockstitch button sewer Stitch formation Single needle lock stitch Maximum sewing speed 3,200 sti/min 2,700 sti/min Pattern size (X x Y) 40 x 30 mm max. 6.4 x 6.4 mm max. Dimensions of buttons that can be [...]

KE-430F , BE-438F 2. NOTES ON HANDLING 2 2 . NOTES ON HANDLING About the machine set-up location ・ Do not set up this sewing machine near other equipment such as televisions, radios or cordless telephones, otherwise such equipment may be affected by elec tronic interference from the sewing machine. ・ The sew ing machine should be plugged direct[...]

3. RELA TIONSHIP BETWEEN PROGRAMS AND P A TTERNS 3 KE-430F , BE-438F 3 . RELA TIONSHIP BETWEEN PROGRAMS AND P A TTERNS Programs specify the wa y that p atterns (stitches) are to be sewn (p arameters). <Programming method> 1. Use a standard pattern which has been r egistered in the actual sewing machine (430F: No. 1 to 89, 438F: 1 to 64) * 2 ,[...]

3. RELA TIONSHIP BETWEEN PROGRAMS AND P A TTERNS 4 KE-430F , BE-438F ・ This sewing machine contains programs numbered 1 to 89 (1 to 64 for the 438F) which contain standard p atterns, and can also be programmed with additional programs numbered from 200 to 999. Pattern numbers 1 to 89 (1 to 64 for the 438F) are registered (s et) into program numbe[...]

3. RELA TIONSHIP BETWEEN PROGRAMS AND P A TTERNS 5 KE-430F , BE-438F Example: ・ Pattern: No. 50 ・ X- and Y -scale: 150% ・ Sewing speed: 2700 sti/min ・ Upper thread tension: 100 Program No. 200 ・ Pattern: No. 50 ・ X- and Y -scale: 50% ・ Sewing speed: 2700 sti/min ・ Upper thread tension: 200 Program No. 202 ・ Pattern: No. 50 ・ X- [...]

4. FUNCTION SETTINGS 6 KE-430F , BE-438F 4 . FUNCTION SETTINGS 4-1. List of special functions when power is turned on This list shows the key operations for using special functions. 1 Data initializatio n function Refer to the CD Instruction Manual. 5 Soft w are version disp lay function Refer to “4-9. Confirming softw are version”. 2 Memory sw[...]

4. FUNCTION SETTINGS 7 KE-430F , BE-438F 9 Main shaft motor st andard po sition adjustment m ode Refer to “1 1-19. Adjusting the main shaft motor standard position”. 11 Protect setting mode Refer to “4-10. Protection settings”. 10 Digit al tension output c orrection mode Refer to “1 1-20. Correcting the digital tension output”. 12 V ers[...]

4. FUNCTION SETTINGS 8 KE-430F , BE-438F 4-2. List of advanced functions This list shows the key operations for using advanced functions. 1 Memory switch setting mode (Standard) Refer to the CD Instruction Manual. 5 Cycle prog ram setting mode Refer to the CD Instruction Manual. 2 Lower thread counter setting mode Refer to the CD Instruction Manual[...]

4. FUNCTION SETTINGS 9 KE-430F , BE-438F 4-3. Setting memory switches (Advanced) 1 Change the mode to memory sw itch sett ing mode. While pressing the TEST key and the SELECT key, turn on the power switch. ・ The memory sw i tch number will be displayed in the PROGRAM No. display and the setting value for that number will be displayed in the menu [...]

4. FUNCTION SETTINGS 10 KE-430F , BE-438F 4-4. List of memory switches NOTE: In standard memory switch setting mode (refer to the C D Inst ruction Manual), the bottom tw o digits only display memory switch Nos. 00 to 49. T he bottom two digit s do not display memory switch Nos. 50 to 99. Work clamp/button clamp settings (001 − 099) No. Setting ra[...]

4. FUNCTION SETTINGS 11 KE-430F , BE-438F Sewing machine moto r settings (100 − 199) No. Setting range Initial value Setting units Setting details 100 ON/OFF ON - Slow start p attern setting method ON: Follows the slow start patterns for each program. (Refer to “5-2. Program settin g method” in the CD Instruction Manual.) OFF: The sewing spee[...]

4. FUNCTION SETTINGS 12 KE-430F , BE-438F Initial values for each application No. KE-430F-03 KE-430F-05 KE-430F -0K KE-430F -0F BE-438F 151 800 1500 400 800 400 152 1200 2000 800 1200 400 153 2500 2500 1200 2500 600 154 3200 3200 2500 3200 900 155 3200 3200 3200 3200 2700 156 3200 3200 3200 3200 2700 157 3200 3200 3200 3200 2700 158 3200 3200 3200 [...]

4. FUNCTION SETTINGS 13 KE-430F , BE-438F Feed settings (200 − 299) No. Setting range Initial value Setting units Setting details 430F:OFF 200 ON/OFF 438F:ON - Single stitch test feed ON: During test feeding, the mechani sm moves one stitch at a ti me when the foot switch is depr essed to the 2nd step (for a 2-pedal foot switch, when the st art s[...]

4. FUNCTION SETTINGS 14 KE-430F , BE-438F Initial values for each application No. KE-430F-03 KE-430F-05 KE-430F-0K KE-430F-0F BE-438F 260 -15 -15 -15 -15 10 261 45 50 45 45 -80 262 45 45 45 45 -50 263 45 45 45 45 -50 264 0 25 0 0 0 265 35 35 35 35 15 266 35 0 35 35 15 No. Setting range Initial value Setting units Setting details 267 OFF , 1 − 99 [...]

4. FUNCTION SETTINGS 15 KE-430F , BE-438F Operation panel settings (30 0 − 399) No. Setting range Initial value Setting units Setting details 300 ON/OFF OFF - Production counter display ON: Production counter display OFF: Lower thread counter display 352 ON/OFF OFF - Production counter counting units ON: Counted for each cycle program. OFF: Count[...]

4. FUNCTION SETTINGS 16 KE-430F , BE-438F No. Setting range Initial value Setting units Setting details 407 1 − 999, C01 − C30 1 - Program No. assigned to the F1 key * Enabled when No. 406 is set to “3”. 408 1 − 999, C01 − C30 2 - Program No. assigned to the F2 key * Enabled when No. 406 is set to “3”. 409 1 − 999, C01 − C30 3 -[...]

4. FUNCTION SETTINGS 17 KE-430F , BE-438F No. Setting range Initial value Setting units Setting details 430F: 1 − 17 ( m m ) 472 438F: 1 − 13 ( m m ) 1 1 Work clamp/button clamp in te rmediate drop position setting * Enabled when No. 470 is set to “OFF”. <Work clamp l ift ing height > * When memory s witch No. 470 is set to “ON”, [...]

4. FUNCTION SETTINGS 18 KE-430F , BE-438F <X and Y pa rallel mov ement amounts > * When memory switch No. 465 is set to “3”, the following p arameters are displa yed during program mode and sewing standby mode. Item Setting range and initial value Display during program mode Display during sewing standby mode X parallel movement amount -9[...]

4. FUNCTION SETTINGS 19 KE-430F , BE-438F Device settings (500 − 599) No. Setting range Initial value Setting units Setting details 500 ON/OFF OFF - Thread nipper operation ON: Used * However , all of the following conditions must be satisfied. Memory switch No. 100 = ON Memory switch No. 566 = ON Slow start speed is Lo8 or Lo9 Sewing speed is 15[...]

4. FUNCTION SETTINGS 20 KE-430F , BE-438F No. Setting range Initial value Setting units Setting details 582 ON/OFF ON 1 Upper thread tension tightening at the sewing start ON: Enabled OFF: Disabled 583 -150 − 150 (degrees) 0 5 Upper thread tension change (ti ghtening) angle offset at the sewing st art 584 -1 10 − 40 (degrees) 0 5 Upper thread t[...]

4. FUNCTION SETTINGS 21 KE-430F , BE-438F Maintenance settings (700 − 799) No. Setting range Initial value Setting units Setting details 750 ON/OFF OFF - Continuous operation m ode (for administrator) ON: Continuous op eration is r epeated while the foot switch is being depressed to the 2nd st ep (for a 2-pedal foot switch, while the start sw itc[...]

4. FUNCTION SETTINGS 22 KE-430F , BE-438F 4-5. Setting the foot switch operation mode ● When using a foot s w itch The following table describes the operation of the work clamp/button clamp during sewing standb y mode when using the foot swit ch. 1. Set memory switch No. 070 to “1”. 2. Use memory switch No. 071 to select t he desired operatio[...]

4. FUNCTION SETTINGS 23 KE-430F , BE-438F ● When using a 2-pedal foot switch (option) The following table describes the operat ion of the work clamp/button clamp during sewing standby mode when using a 2-pedal foot switch. 1. Set memory sw itch No. 070 to “2”. 2. Use memory switch No. 072 to select t he desired operation mode from the followi[...]

4. FUNCTION SETTINGS 24 KE-430F , BE-438F 4-6. Checking the error history The past error history can be c hecked by the following procedure. 1. While pressing the key (1), turn on the pow er switch. The error history number will appear in the PROGRAM No. disp lay (2) and the error code will appear in the menu display (3). NOTE: E025, E035, E065, E7[...]

4. FUNCTION SETTINGS 25 KE-430F , BE-438F 4-7. Input checking method This is used at the following times. ・ When you would like to check for problems with the operatio n panel ・ When you would like to check for broken cords ・ When you would like to adjust a sensor position This lets you check if the CPU is reading si gnals from the keys and t[...]

4. FUNCTION SETTINGS 26 KE-430F , BE-438F Item No. Item name Input status C heck items and checking methods [ 5] [orP] [ on] / [ oFF] Work clamp motor home posi tion sensor position Remove the side cover and raise the work clamp/button clamp manually . * ON when raised, OFF when lowered. [ 6] [EnP] [-999] − [ 999] Work clamp motor encoder counter[...]

4. FUNCTION SETTINGS 27 KE-430F , BE-438F Item No. Item name Input status C heck items and checking methods [ 16] [EMC] [ no] / [ oFF] / [ on] S top switch (option) * [ no] is displayed when not connected. [ 17] [HEd] [ on] / [ oFF] Machine head switch [ oFF] is displayed when the machine head is tilted back. [ 18] [orn] [ on] / [ oFF] Thread nippe[...]

4. FUNCTION SETTINGS 28 KE-430F , BE-438F 4-8. Output checking method This is used at the following times. ・ When you would like to check for problems with the operatio n panel ・ When you would like to check for a problem w i th the drive mechanism ・ When you would like to check for broken cords Y ou can check whether the signals being output[...]

4. FUNCTION SETTINGS 29 KE-430F , BE-438F Item No. Item name Operation [ 55] [CL − r] The valve for the right work clamp turns on. (*) [ 56] [CL − L] T he valve for the left work clamp turns on. (* ) [ 57] [Foot] The valve for the stepping foot turns on. (*) [ 58] [FLiP] Inner clamping valve is turned ON (*) [ 59] [CooL] Needle cooler valve is [...]

4. FUNCTION SETTINGS 30 KE-430F , BE-438F 4-9. Confirming sof tware version 1. If you turn on the power while pressing the key (1), the software version w ill be displ ayed in the menu display (2). 2. The PROGRAM No. display (4) will change as follows each time the or key (3) is pressed. PROGRAM No. display (4) Softwa re Menu display (2) example [1[...]

4. FUNCTION SETTINGS 31 KE-430F , BE-438F 4-10. Protection settings There are two ways which can be used to switch to protect setting mode: Method A (which does not require an SD card) and Method B (which requires an SD card). If you want to set up the sewing machine so that these modes cannot be distinguished, it is recommended that y ou set the m[...]

4. FUNCTION SETTINGS 32 KE-430F , BE-438F ● Method B Have an SD card ready . * The SD card is only used at the step of selecting protect setti ng mode, so any type of SD card can be used as long as it can be accessed. In addition, if making the setting two or more times, a different SD card from the one used before can be used. 1. Insert the SD c[...]

4. FUNCTION SETTINGS 33 KE-430F , BE-438F T able of protection lev els and corresponding protected item s × : Operation di sallowed Level OFF 1 2 3 4 5 6 7 (Individ ual setti ngs) Item No. Protect ion details 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 1 Data initialization × × × × × × × 2 Memory switch (Advanced) × 3 Memory swit[...]

5. EDITING P A TTERN DA T A 34 KE-430F , BE-438F 5 . EDITING P A TTERN DA T A 5-1. T ension information in p a ttern dat a T ension codes are recorded in the p atter n data to provide tension information. The tension codes indicate the type of tension (T1 to T9). In addition, the units w hich tension codes are divided into are called sections, and [...]

5. EDITING P A TTERN DA T A 35 KE-430F , BE-438F 5-2. Wo rk flowchart 2922B[...]

5. EDITING P A TTERN DA T A 36 KE-430F , BE-438F 5-3. Switching to p attern editing mode 1 While pressing the TEST key, press the key. ・ The pattern number will flash in the PROGRAM No. display. ・ The number of stitches rema ining until the final stitch will be displayed in the menu display. ・ The section number will be displayed in th e sect[...]

5. EDITING P A TTERN DA T A 37 KE-430F , BE-438F 5-5. Copying p attern data Editing (adding, changing or deleting) of the tension codes w i thin pattern data is limited to pattern numbers within the range of 200 to 999. Because of this, if you would like to edit pattern data w hich has already been registered, you will need to copy the pattern to a[...]

5. EDITING P A TTERN DA T A 38 KE-430F , BE-438F 5-6. Adding tension codes 1 Carry out steps 1 to 3 in “5-3. Switching to pattern editing mode” to switch to pattern editing mode. Press the or key to move the work clamp/button clamp to the desired position. * Move it to a position other than the start of the section (so that “.” is not displ[...]

5. EDITING P A TTERN DA T A 39 KE-430F , BE-438F 5-7. Changing tension codes 1 Carry out steps 1 to 3 in “5-3. Switching to pattern editing mode” to switch to pattern editing mode. While pressing the SELECT key, press the SECTION [+ -] keys. Ea ch time a key is pressed, the wo rk clamp/button clamp aut omatically moves to the start of the next [...]

5. EDITING P A TTERN DA T A 40 KE-430F , BE-438F <Deleting section 2> 5-8. Deleting tension codes 1 Carry out steps 1 to 3 in “5-3. Switching to pattern editing mode” to switch to pattern editing mode. While pressing the SELECT key, press the SECTION [+ -] keys. Ea ch time a key is pressed, the wo rk clamp/button clamp aut omatically move[...]

6. X A ND Y P ARALLEL MOVEMENT OF SEWING P A TTERNS 41 KE-430F , BE-438F 6 . X AND Y P ARALLEL MOVEMENT OF SEWING P A TTERNS The work clamp/button clamp can be moved to any desired position so that sew ing patterns which have already been programmed can be moved in parallel directions forward, back or to the left or right. Use this when you would l[...]

6. X A ND Y P ARALLEL MOVEMENT OF SEWING P A TTERNS 42 KE-430F , BE-438F 6 X-scale Parallel movement mode Press the SELECT key so t hat the Y-scale indicator flashes. * When the SELECT key is pressed, the X-SCALE indicator and the Y-SCALE indicator will flash alternately. 7 Each time the or key is pressed, the work clamp/button clamp will move by 0[...]

7. USING SD CARDS 43 KE-430F , BE-438F 7. USING SD CARDS 7-1. Notes on handling SD cards (commercially available) • Use an SD card or a multimedia card w ith a capacity of 2GB or less. • Do not disassemble or alter SD cards. • Do not bend, drop, scra tch or place heavy objects on top of the SD cards. • Do not allow the SD cards to become we[...]

7. USING SD CARDS 44 KE-430F , BE-438F 7-3. Prep aration for reading and writing data 1 Insert the SD card into the SD slot. NOTE: • Make sure the SD card is facing the correct w ay . • The cover should be closed at all times except when the SD card is inserted and removed, otherwise dust may cause trouble 2 T urn on the pow er switch. 3 Sw itc[...]

7. USING SD CARDS 45 KE-430F , BE-438F 7-4. Reading additional p attern data 1 Select the “ r 1” SD data read/w r ite mode. (Refer to “7-3. Prep aration for reading and writing data”.) ・ The number of the additional p attern data i n the SD card folder will appear in the tension display . (The initial value displayed is “ALL”.) 2 Pres[...]

7. USING SD CARDS 46 KE-430F , BE-438F 7-5. W riting additional p attern data to an SD card 1 Select the “ w2” SD data read/write mode. (Refer to “7-3. Prep arati on for reading and writing data”.) ・ The numbers for the additional pa ttern data in the sewing machine memory will appear in the tension display . (The initial value displayed [...]

7. USING SD CARDS 47 KE-430F , BE-438F 7-6. Reading memory switch dat a 1 Select the “ r3” SD data read/w r ite mode. (Refer to “7-3. Prep aration for reading and writing data”.) 2 While reading “MEM” appears in the tension display Press the ENTER key . ・ The buzzer will sound and the memory switch data will be read from the SD card a[...]

7. USING SD CARDS 48 KE-430F , BE-438F 7-7. W r iting memory switch data to the SD card 1 Select the “ w4” SD data read/write mode. (Refer to “7-3. Prep aration for reading and writing data”.) 2 While writing “MEM” appears in the tension display Press the ENTER key . ・ The buzzer will sound and the memory switch data will be copied to[...]

7. USING SD CARDS 49 KE-430F , BE-438F 7-8. Reading program dat a 1 Select the “ r5” SD data read/w r ite mode. (Refer to “7-3. Prep aration for reading and writing data”.) 2 While reading “PrG” appears in the tension display Press the ENTER key . ・ The buzzer will sound and the sewing program data and cycle program data will be read [...]

7. USING SD CARDS 50 KE-430F , BE-438F 7-9. W riting program data to an SD card 1 Select the “ w6” SD data read/write mode. (Refer to “7-3. Prep aration for reading and writing data”.) 2 While writing “PrG” appears in the tension display Press the ENTER key . ・ The buzzer will sound and the memory switch data will be copied to the SD [...]

7. USING SD CARDS 51 KE-430F , BE-438F 7-10. Reading sewing machine dat a 1 Select the “ r7” SD data read/w r ite mode. (Refer to “7-3. Prep arati on for reading and writing data”.) 2 While reading “MEM” appears in the tension display while memory switch settings are being read, the pattern number appears w hil e additional pattern data[...]

7. USING SD CARDS 52 KE-430F , BE-438F 7-1 1. W riting sewing machine dat a to an SD card 1 Select the “ w8” SD data read/write mode. (Refer to “7-3. Prep aration for reading and writing data”.) 2 While writing “MEM” appears in the tension display while memory switch settings are being written, the pattern number appears while additiona[...]

7. USING SD CARDS 53 KE-430F , BE-438F 7 - 1 2 . Writing error log dat a and memory switch log data to an SD card 1 Select the “ w9” SD data read/write mode. (Refer to “7-3. Prep aration for reading and writing data”.) 2 While writing “LoG” appears in the tension display while log data is being written Press the ENTER key . ・ The buzz[...]

7. USING SD CARDS 54 KE-430F , BE-438F 7-13. Up dating the control program version 1 Place the control program that you would like to update into the folder of the SD card as specified in “7-2. S tructure of a SD card folder”. 2 W ith the power switch turned off, insert the SD card into the SD card slot. (Refer to step 1 in “7-3. Prep ar atio[...]

8. MECHANICAL DESCRIPTIONS KE-430F, BE-438F 55 8. MECHANICAL DESCRIPTIONS * <number> and [number] indicates the flow of each operations given. * (number) indicates part names only. (They do not represent the flow of operations.) 8-1. Needle bar and thread take-up mechanisms 8-2. Lower shaft and shu ttle race mechanisms 2524B The mechanisms op[...]

8. MECHANICAL DESCRIPTIONS KE-430F, BE-438F 56 8-3. Work clamp lifter mechanism BE-438F 2525B 2526B 1. Pulse motor T assembly 2. Gear 16 3. Cam gear 4. Driving lever 5. Link 6. Lifter lever assembly 7. Work clamp lifter plate assembly 8. Work clamp arm lever plate 9. Work clamp arm lever shaft 10. Work clamp arm lever 11. Work clamp * When the work[...]

8. MECHANICAL DESCRIPTIONS KE-430F, BE-438F 57 8-4. Thread wiper mechanism 2527B When the work clamp pulse motor is turned off, the thread wiper operates in the opposite direction. 1. Pulse moto r T assembl y 2. Gear 16 3. Cam gear 4. Cam shaft 5. Thread wiper cam 6. T hread wiper driving lever 7. T hread wiper rod assembly 8. Connecting plate 9. T[...]

8. MECHANICAL DESCRIPTIONS KE-430F, BE-438F 58 1. Pulse motor Y assembl y 2. Feed gear 3. Y-feed rack shaft 4. Y-feed rack shaft clamp 5. Feed bracket sub assembly 8-5. Feed mechanism Sewing patterns are created through combinations of X and Y movements. 2528B 2529B Y direction X direction 1. Pulse motor X assembl y 2. Feed gear 3. X-feed gear 4. X[...]

8. MECHANICAL DESCRIPTIONS KE-430F, BE-438F 59 8-6. Thread trimmer mechanism 13. Thread trimmer lever H 14. Thread trimmer rod H assembly <14>Thread trimmer link 15. Movable knife lever 16. Movable knife connecting plate 17. Movable knife <Pulse motor ON> 18. Gear 19. Thread trimmer driving cam 20. Cam lever thread trimmer 21. Thread tr[...]

8. MECHANICAL DESCRIPTIONS KE-430F, BE-438F 60 8-7. Tension release mechanism 8-8. Thread nipper mechanism (KE-430F -03, -0F, -0K specifications o nly) 1. Pulse motor P assembly 2. Motor lever 3. TR-link 4. Thread driving lever 5. Connecting plat e R 6. T N-Connecting plate assembly F 7. T hread nipper D assembly 8. T hread nipper U 2531B 2532B 1. [...]

9. DISASSEMBL Y KE-430F, BE-438F 61 9. DISASSEMBL Y CAUTION Disassembly should only be carried out by a qualified technician. Turn off the power switch before disassembly, otherwise the machine may o perate if the foot switch is depressed by mistake, which may result in injury . Be sure to wear protective goggles and gloves when handling the lubric[...]

9. DISASSEMBL Y KE-430F, BE-438F 62 1. Set scre w 2. Needle 3. Needle bar thread guide 4. Nuts [2 pcs] Adjusting screw Compression spring [Push upward and remove horizontally] 9-2. Work clamp arm mechanism BE-438F KE-430F 2534B 2535B 1. Set scre w 2. Needle 3. Needle bar thread guide 4. Bolts [2 pcs] 5. Plain washers [2 pcs] 6. Work clamp arm assem[...]

9. DISASSEMBL Y KE-430F, BE-438F 63 9-3. Needle bar mechanism Do not remove the slide block guide if possible to prevent the machine from overheating due to needle bar rubbing. Left-hand thread 2536B 2537B 1. Rubber cap 2. Screw 3. Needle bar [Pull out] 4. Needle bar clamp 5. Slide block 6. Rubber caps [3 pcs] 7. Set screws [2 pcs: Loosen] 8. Set s[...]

9. DISASSEMBL Y KE-430F, BE-438F 64 9-4. Upper shaft mechanism (Continued on next page.) 2538B 1. Screws [2 pcs] 2. Grease support F 3. Bolt 4. Crank rod washer 5. Crank rod base[...]

9. DISASSEMBL Y KE-430F, BE-438F 65 （取り外す） （ゆるめる） 6. Screw 7. Set screw [Loosen] 8. T hread take-up crank 9. Bolts [2 pcs] (Remove one, loosen one.) 10. Balancer plate 11. Balancer 12. Set screws [2 pcs: Loosen] 13. Rubber cap 14. Set screws [2 pcs: Loosen] 15. Set screws [2 pcs: Loosen] 16. Set screws [2 pcs: Loosen] 17. Se[...]

9. DISASSEMBL Y KE-430F, BE-438F 66 9-5. Lower shaft mechanism (Continued on next page.) 10. Screws [5 pcs] 11. Gear cover 12. Screws [2 pcs] 13. Positioning plate 2541B Do not remove the gear cover if at all possible, otherwise grease will leak out. 1. Bolt [Loosen] 2. Driver 3. Adjusting stud [Pull out] 4. Set screw [Loosen] 5. Screw 6. Oil tube [...]

9. DISASSEMBL Y KE-430F, BE-438F 67 14. Rubber caps [2 pcs] 15. Set screws [4 pcs: Loosen] 16. Set screw s [2 pcs] 17. Set screw s [2 pcs] 18. Rock gear shaft R [Pull backw ard] 19. Rock gear shaft assembly [Pull forward] 20. Rock gear 21. Set screws [4 pcs: Loosen] 22. Lower shaft assembly 23. Rubber seal L 24. Bearing bush assembly (Tap out the r[...]

9. DISASSEMBL Y KE-430F, BE-438F 68 9-6. Lubrication 2542B 1. Bolts [2 pcs] 2. Bolts [2 pcs] 3. Plain washers [2 pcs] 4. Oil tank plate 5. Oil tank nut 6. Oil tank assembly[...]

9. DISASSEMBL Y KE-430F, BE-438F 69 9-7. Feed mechanism 1. Set screw [Loosen] 2. Retaining ring, E 3. Y-feed rack shaft cramp [Pull upward] 4. Screws [6 pcs] 5. Feed bracket cover 6. Set screw [Loosen] 7. Regulator block assembly 8. Feed bracket sub assembly 9. Bolts [4 pcs] 10. Feed bracket support plate 11. Bolt sockets (S/P w ashers) [3 pcs] 12.[...]

9. DISASSEMBL Y KE-430F, BE-438F 70 9-8. Thread wiper mechanism 1. Set screw [Loosen] 2. Retaining ring, E 3. Screws [2 pcs] 4. Plain washers [2 pcs] 5. T hread wiper arm assembly 6. Retaining ring, E 7. Plain washer 8. O rings [2 pcs] 9. Connecting plat e [Pull upward] 10. Set screw [Loosen] 11. Retaining ring, E 12. Plain washer 13. Wiper shaft 1[...]

9. DISASSEMBL Y KE-430F, BE-438F 71 9-9. Work clamp lifter mechanism (Continued on next page.) 1. Link shoulder screw 2. Bolts [3 pcs] 3. Motor bracket assembly 4. Bolts [4 pcs] 5. Pulse motor T assembly 6. Set screws [2 pcs: Loosen] 7. Gear 16 8. Set screws [2 pcs: Loosen] 9. Retaining ring, E 10. Driving thread trimmer shaft 11. Cam lever thread [...]

9. DISASSEMBL Y KE-430F, BE-438F 72 30. Rubber cap 31. Link shoulder screw 32. Link 33. Set screw [Loosen] 34. Retaining ring, E 35. Lever shaft 36. Plain washer 37. Lifter lever assembly 38. Needle bar guide slide block 39. Work clamp lifter plate assembly NOTE: Hold the work clamp lifter plate when removing the lifter lever assembly 37, otherwise[...]

9. DISASSEMBL Y KE-430F, BE-438F 73 9-10. Threading mechanism 9-11. Tension release mechanism 1. Set screw [Loosen] 2. T ension bracket [Pull out] 3. Tension release pin 4. Nut 5. Plain washer 6. Set screw [Loosen] 7. T ension stud assembly [Pull out] 8. T hread take-up spring 2553B 2552B 1. Screws [2 pcs] 2. Solenoid cover 3. Screws [2 pcs] 4. Ten[...]

9. DISASSEMBL Y KE-430F, BE-438F 74 9-12. Thread nipper mechanism (KE-430F -03, -0F, -0K sp ecifications only) 1. Link shoulder screws [2 pcs] 2. TR-Ling 3. Set screws [2 pcs: Loosen] 4. Motor lever 5. Bolts [4 pcs] 6. Pulse motor P assembly 7. Bolts [3 pcs] 8. Motor bracket rear assembly 9. Link shoulder screw 10. Washer, wave spring 11. Set screw[...]

9. DISASSEMBL Y KE-430F, BE-438F 75 9-13. Thread trimmer mechanism (Continued on next page.) 1. Set screws [2 pcs: Loosen] 2. T hread trimmer cam 3. Screws [3 pcs] 4. Fan 5. Set screws [2 pcs: Loosen] 6. Guide shaft 7. Spring 8. Nut 9. Shoulder screw B 10. Driving lever 11. Set screws [2 pcs: Loosen] 12. Retaining ring, C 13. Collar shaft 14. Threa[...]

9. DISASSEMBL Y KE-430F, BE-438F 76 2557B 18. Nut 19. Shoulder screw B 20. Thread trimmer rod V assembly 21. Nut 22. Shoulder screw B 23. Washer, wave spring 24. Bolt 25. Spring washer 26. Plain washer 27. Set screws [2 pcs: Loosen] 28. Thread trimmer lever shaft 29. Retaining ring, C 30. Washers [2 pcs] 31. Thread trimmer lever H 32. Link shoulder[...]

9. DISASSEMBL Y KE-430F, BE-438F 77 9-14. Shuttle hook mechanism 2558B 1. Bobbin case assembly 2. Shuttle race base setting claw [Open to right and left] 3. Shuttle race base 4. Shuttle hook[...]

10. ASSEMBL Y KE-430F, BE-438F 78 10. ASSEMBL Y CAUTION Disassembly should only be carried out by a qualified technician. Turn off the power switch before disassembly, otherwise the machine may o perate if the foot switch is depressed by mistake, which may result in injury . Be sure to wear protective goggles and gloves when handling the lubricatin[...]

10. ASSEMBL Y KE-430F, BE-438F 79 15. Driving lever 16. Thread trimmer collar 17. Collar shaft 18. Retaining ring, C 19. Set screws [2 pcs: Tighten] 20. Thread trimmer rod V assembly 21. Shoulder screw B 22. Nut 23. Guide shaft 24. Spring 25. Set screws [2 pcs: Tighten] 26. Shoulder screw B 27. Nut When the ball joint assembly of the thread trimmer[...]

10. ASSEMBL Y KE-430F, BE-438F 80 10-2. Tension release mechanism 10-3. Threading mechanism While gently pushing the tension stud assembly 3 in the direction shown in the illustration, tighten the set screw 6 until there is no clearance between the tension bracket 1 and the nut 5. 2836B Adjust while referring to “11-16. Adjusting the tension rele[...]

10. ASSEMBL Y KE-430F, BE-438F 81 10-4. Thread wiper mechanism Apply grease to the portions indicated by the w hite arrows. 1. T hread wiper rod assembly [Insert from the front] 2. Wiper shaft 3. Plain washer 4. Retaining ring, E 5. Set screw [Tighten] 6. O rings [2 pcs] 7. Connecting plate 8. Plain washer 9. Retaining ring, E 10. Thread wiper arm [...]

10. ASSEMBL Y KE-430F, BE-438F 82 1) Loosen the set screw 2 about 1/3 of a turn from its fully-tightened position so that the eccentric shaft 1 can rotate. 2) Insert the Y-feed ra ck shaft (1), and then turn the eccentric shaft 1 so that it is lightly touching the ball beari ng (2); then tighten the set screw 2. 3) T emporarily remove the Y-feed ra[...]

10. ASSEMBL Y KE-430F, BE-438F 83 10-6. Work clamp lifter mechanism Apply grease to the portions indicated by the w hite arrows. * Refer to the next page for the points to no te during reassembl y. (Continued on next page.) 1. Spring hook 2. Bolts [2 pcs] 3. Springs [2 pcs] 4. Cam gear 5. Thread wiper cam 6. T hread trimmer driving cam 7. Cam shaft[...]

10. ASSEMBL Y KE-430F, BE-438F 84 1) While maintaining the condition in C, install drive gear 16 23 to the moto r bracket 27 so that the index mark is facing directly upward. Make sure th at t he harness connector is facing the correct way at this time. 2) Engage drive gear 16 23 and the cam gear 6, and while taking up the ba cklash (play), install[...]

10. ASSEMBL Y KE-430F, BE-438F 85 30. Work clamp lifter plate assembly 31. Needle bar guide slide block 32. Lifter lever assembly 33. Plain washer 34. Lever shaft 35. Retaining ring, E 36. Set screw [Tighten] 37. Link 38. Link shoulder screw 39. Rubber cap KE-430F BE-438F 2844B 2843B Align the set screw 36 (430F) or 47 (438F) with the screw stop on[...]

10. ASSEMBL Y KE-430F, BE-438F 86 Apply grease to the grease hole on the inside. 10-7. Feed mechanism Apply grease to the portions indicated by the arrow s. (Continued on next page.) 2849B Index marks 1. Feed gear 2. X-motor setting plate [Pulse motor X assembly] 3. Set scre ws [2 pcs: Tighten] 4. Bolt sockets (S/P washers) [3 pcs] 5. X-feed lever [...]

10. ASSEMBL Y KE-430F, BE-438F 87 Move the feed bracket sub a ssembly 12 back and forth so that the Y-feed rack shaft 8 and the feed bracket sub assembly 12 move smoothly , and then tighten the four bolts 11. (Continued on next page.) 8. Y-feed rack shaft 9. Retaining ring, E 10. Feed bracket support plate 11. Bolts [4 pcs: Temporarily tighten] 12.[...]

10. ASSEMBL Y KE-430F, BE-438F 88 (Continued on next page.) 19. Feed gear 20. Pulse motor Y assembly (Y-motor setting plate) 21. Set screw s [2 pcs] 22. Bolt sockets (S/P wa shers) [3 pcs: Temporarily tighten] Align the set screw 21 with the screw stop and tighten it so that the clearance between the feed gear 1 and the pulse motor Y assembly 20 is[...]

10. ASSEMBL Y KE-430F, BE-438F 89 <Feed mechanism home positio n adjustment> 1. Install the home position standard plate (1) to the feed bracket s ub assembly (2) w ith the two screws (3). 2. Gently tilt back the machine head. 3. Switch the sewing machine to home position adjustment mode. (See "11-18 -1 . X- and Y-feed motor home positio[...]

10. ASSEMBL Y KE-430F, BE-438F 90 10-8. Upper shaft mechanism Apply grease <GREASE BZL-300P> specif ied by Brother to the portions indicated by the white arrows. * 17, 18 and 19 should be installed after carrying out the installations in “10-10. Lower shaft mechanism”. * Set screws marked with * in the illustration are on the screw stop s[...]

10. ASSEMBL Y KE-430F, BE-438F 91 Install pulley gear R 3 so t hat it is aligned with the reference line on the upper shaft 1. With the motor assembly 13 provisionally installed, turn it in the direction of the arrow and then tighten the four bolts 14. With the edge of the bal ancer 20 pushed up against the edge of the cam (1), ti ghten the two bol[...]

10. ASSEMBL Y KE-430F, BE-438F 92 10-9. Needle bar mechanism Apply grease <GREASE BZL-300P> specif ied by Brother to the portions indicated by the white arrows. (Continued on next page.) 1. Slide block guide 2. Bolts [2 pcs: Temporarily tighten] 3. Washer 4. T hread take-up lever assembly 5. Washer 6. Needle bar crank 7. Set screw collar 8. T[...]

10. ASSEMBL Y KE-430F, BE-438F 93 Align the needle bar 18 so that reference line A (the second low est reference line on the needle bar 18) or reference line a (top reference line) is aligned with t he lower edge of the needle bar bush when the machine pulley is turned to lower the needle bar 18 to its lowest position, and then set the cu t section[...]

10. ASSEMBL Y KE-430F, BE-438F 94 10-10. Lower shaft mechanism Apply grease < GREASE BZL-300P > or < GREASE BZL-302R > specif ied by Brother to the porti ons indicated by the white arrows. (Continued on next page.) 1. Shuttle race base assembly 2. Oil tube support 3. Screw 4. Cord holder U3 5. Screw 6. Adjusting stud 7. Set Screw [Tight[...]

10. ASSEMBL Y KE-430F, BE-438F 95 Gap distribution * Set screws marked with * in the illustration are on the screw stop side. (Continued on next page.) Align the angles of the grooves 8. Rock gear 9. Rock gear shaft assembly 10. Rock gear shaft R 11. Set screws [2 pcs: Tighten] 12. Set screws [2 pcs: Tighten] While pushing the rock gear shaft assem[...]

10. ASSEMBL Y KE-430F, BE-438F 96 溝の角度を 合わせる (Continued on next page.) 2872B Adjust while referring to “11-17. Adjusting the backlash amount (play) of the low er shaft gear”. 1) The oil seal 13 and rubber seal L 16 cannot be reused, so have new parts ready for use. 2) Make sure that the installation direct ions for the oil sea[...]

10. ASSEMBL Y KE-430F, BE-438F 97 2875B 2876B 2877B After applying sealant (Threebond 1215) to the shaded area, install the gear cover 24 by tightening the five screws 25 at a torque of 1 Nm. 24. Gear cover 25. Screws [5 pcs] 26. Grease support F 27. Screws [2 pcs] 28. Rubber caps [2 pcs] Remove the rubber cap (1) and apply grease, and then reinsta[...]

10. ASSEMBL Y KE-430F, BE-438F 98 10-11. Lubrication 10-12. Shuttle hook mechanism After installing the shuttle hook 4, carry out the adjustments in “11-3. Adjusting the needle bar lift amount and the driver needle guard” and “11-4. Adjusting the needle clearance”. 2879B 1. Needle bar thread guide 2. Needle 3. Set screw 4. Shuttle hook 5. S[...]

10. ASSEMBL Y KE-430F, BE-438F 99 10-13. Thread trimme r mechanism (2) Apply grease to the portions indicated by the w hite arrows. 1. Fixed knife 2. Plain washers [2 pcs] 3. Spring washers [2 pcs] 4. Screws [2 pcs] 5. Movable knife spacer 6. Movable knife assembly 7. Movable knife collar 8. Thrust collar 9. Movable knife shoulder screw * 10. Bobbi[...]

10. ASSEMBL Y KE-430F, BE-438F 100 Apply grease to all sliding parts du ring assembly. 10-14. Work clamp arm mechanism (KE-430F) After installing, carry out test feedi ng and check that the needle hole (7) is not inside the work clamp (4) and the frame of the feed plate 1. If the needle hole (7) is inside the frame, ad just the position of the w or[...]

10. ASSEMBL Y KE-430F, BE-438F 101 10-15. Work clamp arm mechanism (BE-438F) Apply grease to the portions indicated by the arrows during assembly. 1. Feed plate 2. Screws [2 pcs] 3. Button clamp holder 4. Button clamp holder shaft 5. Set screws [2 pcs] 6. Nuts [2 pcs] Adjusting screw Compression spring After installing, check that the needle passes[...]

10. ASSEMBL Y KE-430F, BE-438F 102 10-16. Covers 1. Shuttle race cover assembly 2. Washer, wave spring [2 pcs] 3. Shoulder screws, 8-2 [2 pcs] 4. Face plate assembly 5. Screws [3 pcs] 6. Eye guard assembly 7. Bolts [2 pcs] 8. Side cover 9. Screws [4 pcs] 10. Rear cover 11. Screws [4 pcs] 12. Top cover 13. Screws [4 pcs] 2890B[...]

11 . A D J U S T M E N T 103 KE-430F , BE-438F 1 1 . ADJUSTMENT CAUTION Maintenance and inspection of the sew ing machine should only be carried out by a qualified technician. Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system. Turn off the power switch and disconnect the powe r c[...]

11 . A D J U S T M E N T 104 KE-430F , BE-438F 1 1-1-1. Upper and lower th read tension <Operating th e upper thread te nsion> ● When using a foot switch In the sewing st andby condition and during test operation st andby , the thread tension in the TENSION display (2) which has been set for the section appearing in the SECTION No. display [...]

11 . A D J U S T M E N T 105 KE-430F , BE-438F 1 1-1-2. Thread take-up spring KE-430F Use Medium-weight materials (-0 3) Knitted w ear (-0K) Foundation garments (-0F) Heavy-weight materials (-05) BE-438F Thread take-up spring height (mm) 6 - 1 1 6 - 1 1 Thread take-up spring tension (N) 0.2 - 0.4 0.6 - 1.0 0.15 – 0.35 <Thread take-up spring he[...]

11 . A D J U S T M E N T 106 KE-430F , BE-438F 1 1-1-3. Arm thread guide C The standard position of arm thread guide C (1) is w he n the screw (2) is aligned with the pos ition of the reference line. T o adjust the position, loosen the screw (2) and then move arm thread guide C (1). ・ When sewing heavy-weight materials, move arm thread guide C (1[...]

11 . A D J U S T M E N T 107 KE-430F , BE-438F 1 1-3. Adjusting the needle bar lif t amount and the driver needle guard 1. T urn the pulley in the dire ction of the arrow to raise the needle bar from the low est position until the lowest reference li ne on the needle bar (reference line B) is aligned wi th the lower edge of the needle bar bush (1).[...]

11 . A D J U S T M E N T 108 KE-430F , BE-438F 1 1-5. Adjusting the shuttl e race thread guide Install the shuttle race thread guide (1) 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 w r ong positi on, thread breakages, soil[...]

11 . A D J U S T M E N T 109 KE-430F , BE-438F 1 1-7. Adjusting the thread trimming 1. Remove the top cover, side cover and rear cover. 2. Turn the pulley in the direct ion of the arrow to move the needle bar to its low est position. 3. Loosen the three bolts (1), and then set the clearance (section A) between the rubber and the plunger to 0.65 mm.[...]

11 . A D J U S T M E N T 1 10 KE-430F , BE-438F 1 1-8. Adjusting the position of the movable knife 1. Remove the top cover and the side cover. 2. T urn the pulley by hand in the direction of the arrow to mo ve the needle bar to its lowest position, and then turn the cam shaft (1) so that the thread trimmer collar (2) goes into the groove in the thr[...]

11 . A D J U S T M E N T 111 KE-430F , BE-438F 1 1-9. Replacing the movable knife and fixed knife 1. Open the shuttle race cover, remove the two screw s (1), and then remove the feed plate (2). 2. Remove the two screws (3) and the tw o flat sc rews (4), and then remove the needle plate (5). 3. Remove the movable knife (6) and the fixed knife (7). 4[...]

11 . A D J U S T M E N T 1 12 KE-430F , BE-438F 1 1-10. Adjusting the work clamp lift amount (KE-430F) Adjust so that the actual maximum lif t amount for the work clamp is 17 mm abov e the top of the needle plate w h en the maximum work clamp height has been set to 17 mm using th e operation panel (refer to “W ork clamp lifting height” on P .17[...]

11 . A D J U S T M E N T 11 3 KE-430F , BE-438F 1 1-12. Adjusting the holding pressure (BE-438F) Loosen the nut (1) and turn the nut (2) to the point where it is just tight enough that the material will not slip out o f place when it is slightly pulled (k eeping pressure as slight as possible). 1 1-13. Adjusting the position of the button clamp (BE[...]

11 . A D J U S T M E N T 1 14 KE-430F , BE-438F 1 1-15. Adjusting the thread wiper <Thread wiper height adj ustment> Loosen the two screws (2) and adjust the thread wiper (1) so that the clearance between the top of the thread wiper (1) and the tip of the needle is approximately 2 mm when the thread wiper (1) is aligned with the center of the[...]

11 . A D J U S T M E N T 11 5 KE-430F , BE-438F 1 1-16. Adjusting the tension release amount 1. Remove the t wo screw s (1), and then remove the solenoid cover (2). 2. Remove the two screws (3). 3. W ith the plunger (5) of the tension solenoid (4) pushed all the way in, loosen the nut (8) and turn the bolt (6) to adjust so that the end of the bolt [...]

11 . A D J U S T M E N T 1 16 KE-430F , BE-438F 1 1-17. Adjusting the backlash amount (play) of the lower shaf t gear 1. Tilt back the machine head. 2. Open the shuttle race base cover . 3. Remove the shuttle race base, shuttle hook and bobbin case. 4. Remove the two screws (with washer) (1), and then remove grease holder F (2). 5. Remove the two r[...]

11 . A D J U S T M E N T 11 7 KE-430F , BE-438F 1 1-18. Adjusting the home position 1 1-18-1. X- and Y -feed motor home positions 1 W ith the power sw itch turned off, turn the pulley in the di rection of the arrow to set t he needle to the needle up stop position (near the highest thread take-up position). 2 While pressing the keys simultaneously,[...]

11 . A D J U S T M E N T 1 18 KE-430F , BE-438F 5 Use the home position st andard plate and press the or keys to change the offset value (-50 to 50) so that the needle drops at the home position. ・ The X-feed or Y-feed motor will operate according to the offset value. ・ The offset value in the menu display will flash, and “JoG” will illumin[...]

11 . A D J U S T M E N T 11 9 KE-430F , BE-438F 1 1-18-2. Work clamp lif t motor home position 1 With the power switch turned off, turn the pulley in the direction of the arrow to se t the needle to the needle up stop position (near the highest thread take-up position). 2 While pressing the keys simultaneously, turn on the power switch. ・ "o[...]

11 . A D J U S T M E N T 120 KE-430F , BE-438F 6 Depress the foot switch to the 2nd step (for a 2-pedal foot switch, depress the start switch) to pro visi onally confirm the offset val ue. ・ Work clamp lift motor home position detection will be carried out based on the currently-displayed offset value. Check the home position. ・ “JoG” will [...]

11 . A D J U S T M E N T 121 KE-430F , BE-438F 1 1-18-3. Thread nipper motor home position 1 With the power sw itch turned off, turn the pulley in the direction of the arrow to set the needle to the needle up stop position (near the highest thread take-up position). 2 Open the shuttle race base cover and remove the shut tle ra ce base, shuttle hook[...]

11 . A D J U S T M E N T 122 KE-430F , BE-438F 7 Depress the foot sw itch to the 2nd step to provisionally confirm the offset value. ・ Thread nipper motor home positi on detection will be carried out based on the currently-displayed o ffset value. Check the home position. ・ “JoG” will disappear from the TENSION display . 8 Press the F1, F2 [...]

11 . A D J U S T M E N T 123 KE-430F , BE-438F 1 1-19. Adjusting the main shaf t motor st andard position 1 Remove the needle, the needle bar thread guide and the feed plate. 2 While pressing the [+ -] keys simultaneously, turn on the power switch. ・ "Mot" will illuminate in the PROGRAM No. display and "Set" will illuminate in[...]

11 . A D J U S T M E N T 124 KE-430F , BE-438F 6 End adjustment mode. TEST indicator switches of f Press the TEST key. ・ The display will return to the normal display and the sewing machine will switch to home position detection standby. 7 T urn off the power switch and install the nee dle, the needle bar thr ead guide and the feed plate. 2404B[...]

11 . A D J U S T M E N T 125 KE-430F , BE-438F 1 1-20. Correcting the digit al tension output 1 1. Adjust the pretension to 5 to 7 gf (0.05 to 0.07 N). * At this time, use the TOYO BO polyester #50 (white) thread which is recommended by Brother. 2. Thread the upper thread as show n in the illustration at left. NOTE: Do not thread the thread through[...]

11 . A D J U S T M E N T 126 KE-430F , BE-438F 3 Use a tension gauge to measure t he upper thread tension as shown in the illustration at left. Press the or key to increase or decrease the value appearing in the menu display until it corresponds with the measurement value. * Round off any decimal places in the measurement value. * The units for the[...]

11 . A D J U S T M E N T 127 KE-430F , BE-438F 1 1-21. Checking the m achine head switch 1. Turn on the power switch. 2. Check that no error numbers appear on the operation panel. <If error [E050], [E051] or [E055] is displayed> If the machine head switch (1) is not turned on, error [E050], [E051] or [E055] will occur . Use the screw (2) to a[...]

11 . A D J U S T M E N T 128 KE-430F , BE-438F 5 Completion of setting “ END” will be displayed in the menu display. NOTE: If the foot switch operations are not carried out correctly , “ END” will not be displayed and the buzzer w ill sound. After “1.Frt” is displayed in the menu display , repeat the operation from step 2. 6 T urn off t[...]

12. APPL YING GREASE 129 KE-430F , BE-438F 12. APPL YING GREASE CAUTION Be sure to w ear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherw ise inf lammation can result. Furthermore, do not drink the oil or eat the grease under any circumstances, as they can c[...]

12. APPL YING GREASE 130 KE-430F , BE-438F NOTE: • "GrE" and "AS.UP" will continue to be displayed each time the power is turned on until grease is applied and the notification is reset by carrying out the procedure on page 131. • If you continue to use the sewing machine after the “GrE” and “AS.UP" notification a[...]

12. APPL YING GREASE 131 KE-430F , BE-438F 3. Applying grease < A . Applying grease to the eccentric w heel > 1. Turn of f the power switch. 2. Remove the four screws (1), and then remove the top cove r (2). 3. Remove the bolt (4) from the eccentric wheel (3). * Be careful not to drop the bolt (4) when removing it. 4. Loosen the two bolts (5)[...]

12. APPL YING GREASE 132 KE-430F , BE-438F < B. A pplyin g grease to the rock gear shaft F assembly > 1. Tilt back the machine head. 2. Loosen the two screws (1 ), and then remove grease holder F (2). 3. Turn the pulley in the direct ion of the arrow to move the rock gear shaft F assembly (3) to the most for ward position. 4. Remove the bolt [...]

13. HOW TO INST ALL T HE FEED PLA TE FOR KE-430C SERIES IN KE -430F AND BE-438F 133 KE-430F , BE-438F 1 3 . HOW T O INST ALL THE FEED PLA TE FOR KE-430C SERIES IN KE-430F AND BE-438F If using the feed plate for the KE-430C and BE-438C, inst all it as follows. <KE-430F> Install using the two screw s (1) and the accessory feed plate cove r (2),[...]

KE-430F, BE-438F 14. INSTALLING THE 2-PEDAL FOOT SWITCH (OPT ION) 134 1 4. INST ALLING THE 2-PEDAL FOOT SWITCH (OPTION) The foot switch conversion harness (SB1565001) that is sold separately is required. DANGER Wait at least 5 minutes after turning off the power sw itch and disconnecting the power cord from the w a ll outlet before opening the face[...]

15. ELECTRIC MECHANISM 135 KE-430F , BE-438F 15. ELECTRIC MECHANISM DANGER Wait at least 5 minutes after turning off the power sw itch a nd disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present will result in serious injury from electric shocks. 15-1. Preca[...]

15. ELECTRIC MECHANISM 136 KE-430F , BE-438F 1 5 - 2 . Component s inside and out s ide the contro l box and in the operation p a nel Main PCB Secured to the rear . This PCB drives the pulse motor and solenoids . Motor PCB Secured to the side. T his PCB drives the main shaf t motor . There are two fuses on this PCB. Power PCB Secured to the base. T[...]

15. ELECTRIC MECHANISM 137 KE-430F , BE-438F 15-3. Fuse explanation When replacing a fuse, be sure to use the specified ones listed below . If a component on a PCB is damaged, the fuses may bl o w again soon even after they have been replaced. No. Part name Part code When a fuse has blown F1 F2 Fuse 15AFB (glass tube fuse, 15A-250V) A10193-001 The [...]

15. ELECTRIC MECHANISM 138 KE-430F , BE-438F 15-4. Connectors Most of the machine trouble is due to connector problems includi ng improper connection or suffic ient contact. Therefore, be sure to check if each connector is correc tly inserted and that there is no contact fa ilure betw e en pins and wires before starti ng troubleshooting procedures.[...]

15. ELECTRIC MECHANISM 139 KE-430F , BE-438F Power PCB Panel PCB 2932B 2687B[...]

15. ELECTRIC MECHANISM 140 KE-430F , BE-438F 15-4-2. Cont act failure The connectors functions are divided into five categories. Some connectors may bel ong to more than one group. Be sure to investigate another categor y if a problem is not found in one category . Feed mechanism Problem Connector No. and position • The w ork clamp/button clamp o[...]

15. ELECTRIC MECHANISM 141 KE-430F , BE-438F Thread trimmer mechanism Problem Connector No. and position • Thread trimming is not performed. (There is no error display .) • Digital tension does not operate. (There is no error display .) • Error E690 is displayed. Sewing operation Problem Connector No. and position • The pow er indicator is [...]

15. ELECTRIC MECHANISM 142 KE-430F , BE-438F Others Problem Connector No. and position • Panel indication is strange. • The pow er indicator is not illuminated. • Any operation panel key does not have any ef fect. • The sewing machine does not operate when the foot switch is depressed. (No error display .) • Error E055 is displayed af ter[...]

15. ELECTRIC MECHANISM 143 KE-430F , BE-438F Problem Connector No. and position • Only the power indicator illuminates. • Nothing appears on the operation panel display . • The sewing machine does not operate when the foot switch is depressed. • Error E130 is displayed. • Error E131 is displayed. 2949B 2951B 2950B[...]

15. ELECTRIC MECHANISM 144 KE-430F , BE-438F 15-5. T roubleshooting 15-5-1. T roubleshooting flowchart Symbols and their meanings Switch operation Set-up operation or condition Yes-or-no decision-making process The procedure to follow continues on the next page The error status number in the first column of the table of “15-5-2. Problem solution [...]

15. ELECTRIC MECHANISM 145 KE-430F , BE-438F 2953B[...]

15. ELECTRIC MECHANISM 146 KE-430F , BE-438F 2954B[...]

15. ELECTRIC MECHANISM 147 KE-430F , BE-438F 2955B[...]

15. ELECTRIC MECHANISM 148 KE-430F , BE-438F 15-5-2. Problem solution and measures DANGER Wait at least 5 minutes after turning off the power sw itch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. T ouching areas where high voltages ar e present will result in serious injury from electric sho[...]

15. ELECTRIC MECHANISM 149 KE-430F , BE-438F Error status #1 The power indicator does not light when the power is turned on. Probable causes Check/ repair/ adjust Parts to be replaced 1. (Check the LEDs) Turn on the power switch and check that the various LEDs illuminate in the following order. a. LD2 (red) on motor PCB does not illuminate. → ＃[...]

15. ELECTRIC MECHANISM 150 KE-430F , BE-438F Error status #1 The power indicator does not light when the power is turned on. Probable causes Check/ repair/ adjust Parts to be replaced 6. Malfunction of main PCB Disconnect connectors P4 (POWER3) and P6 (POWER2) from the motor PCB, and then turn on the power switch and check LD2 (red) on the power PC[...]

15. ELECTRIC MECHANISM 151 KE-430F , BE-438F Error status #2 Error code appears on t he display when the power is turned on. Probable causes Check/ repair/ adjust Parts to be replaced 1. If “E025” or “E035” is displayed, the foot switch is still depressed. a. Check if the foot switch is still depressed. b. Check if there is a s hort-circuit[...]

15. ELECTRIC MECHANISM 152 KE-430F , BE-438F Error status #3 No keys on t he operation panel are not activated. Probable causes Check/ repair/ adjust Parts to be replaced 1. Malfunction of panel PCB Check that connector P3 (PANEL) is connected to the motor PCB, and that connector P1 (MAIN) is connected to the panel PCB. Operation panel assembly Pan[...]

15. ELECTRIC MECHANISM 153 KE-430F , BE-438F Error status #5 Error code appears on the display when the foot sw itch is depressed. Probable causes Check/ repair/ adjust Parts to be replaced 1. If “E130”, “E131” or “E132” is displayed, there is a poor connection of the synchronizer. Refer to inspection #2-4. 2. If “E130”, “E131” [...]

15. ELECTRIC MECHANISM 154 KE-430F , BE-438F Error status #6 Error code appears on the display when the foot sw itch is depressed. Probable causes Check/ repair/ adjust Parts to be replaced 1. If the X feed does not move and "E200" is displayed, there is a malfunction of the power PCB. Disconnect connectors P1 (POWER2) and P24 (POWER1) fr[...]

15. ELECTRIC MECHANISM 155 KE-430F , BE-438F Error status #7 Error code appears on the display when the foot sw itch is depressed. Probable causes Check/ repair/ adjust Parts to be replaced 1. If the Y feed does not move and "E210" is displayed, there is a malfunction of the power PCB. Disconnect connectors P1 (POWER2) and P24 (POWER1) fr[...]

15. ELECTRIC MECHANISM 156 KE-430F , BE-438F Error status #8 Error code appears on the display when the foot sw itch is depressed. Probable causes Check/ repair/ adjust Parts to be replaced 1. If the work clamp pulse motor does not operate and "E300" is displayed, there is a malfunction of the power PCB. Disconnect connectors P1 (POWER2) [...]

15. ELECTRIC MECHANISM 157 KE-430F , BE-438F Error status #9 Error code appears on the display when the foot sw itch is depressed. Probable causes Check/ repair/ adjust Parts to be replaced 1. If "E690" is displayed during home position detection, there is a malfunction of the thread nipper. a. Check the position of the thread nipper driv[...]

15. ELECTRIC MECHANISM 158 KE-430F , BE-438F Error status #10 Work clamp does not rise. Probable causes Check/ repair/ adjust Parts to be replaced 1. Incorrect work clamp home position adjustment a. Adjust the home position while referring to "11-18. Adjusting the home position". b. Check if the work clamp/button clamp is touching anythin[...]

15. ELECTRIC MECHANISM 159 KE-430F , BE-438F Error status #16 The machine does not operate during sewing, and the error code [E130], [E131] or [E132] appears on the displa y. Probable causes Check/ repair/ adjust Parts to be replaced Malfunction of synchronizer, machine motor, fuses or motor PCB. Refer to steps 1 to 4 in #5. Error status #17 Error [...]

15. ELECTRIC MECHANISM 160 KE-430F , BE-438F Error status #17 Error code appears on the display after the machine operates. Probable causes Check/ repair/ adjust Parts to be replaced 10. If "E150" is displayed after the sewing machine operates, the motor is abnormally overheating. a. Turn off the power and let the motor stand for 30 minut[...]

15. ELECTRIC MECHANISM 161 KE-430F , BE-438F Error status #19 The thre ad trimmer does not operate. Probable causes Check/ repair/ adjust Parts to be replaced 1. Incorrect memory switch setting Set memory sw itch No. 164 to OFF. * If it is set to ON, thread trimming w ill not be carried out. 2. Incorrect mechanism adjustment Adjust the thread trimm[...]

15. ELECTRIC MECHANISM 162 KE-430F , BE-438F Error status #20 The machine does not stop at the needle up stop pos ition. (“UP” is frequently displayed after sewing) Probable causes Check/ repair/ adjust Parts to be replaced 1. Incorrect adjustment Adjust while referring to "11-18. Adjusting the home position”. 2. Problem with machine mot[...]

16. T ABLE OF ERROR CODES 163 KE-430F , BE-438F 16. T ABLE OF ERROR CODES DANGER Wait at least 5 minutes after turning off the power sw itch and disconnecting the power cord from the w a ll outlet before opening the face plate of the control box. Touching areas where high voltages are present will result in serious injury from electric shocks. If a[...]

16. T ABLE OF ERROR CODES 164 KE-430F , BE-438F Upper shaf t motor-related errors Code Cause and remedy E100 Sewing machine has continued to be used for a ce rtain period after the “G REASEUP” notification appears without the grease being appl ied (without the reset pr ocedure being carried out). Apply grease and then carry out the reset proced[...]

16. T ABLE OF ERROR CODES 165 KE-430F , BE-438F Communication an d memory-related errors Code Cause and remedy E400 Communication error detected between the main PCB and the panel PCB when the power was turned on. T urn off the power , and then check that connector P1 on the panel PCB and connector P3 on the motor PCB are properly connected. E401 C[...]

16. T ABLE OF ERROR CODES 166 KE-430F , BE-438F Data editing-related errors Code Cause and remedy E500 The enlargement ratio setting caused the sew i ng data to extend outside the sewing area. Press the RESET key (*1) to clear the error . Set the enlargement ratio or the sew ing area again. E502 The enlargement ratio caused the data pitch to exceed[...]

16. T ABLE OF ERROR CODES 167 KE-430F , BE-438F PCB-related errors Code Cause and remedy E700 Abnormal rise in power supply voltage. Turn off the power and check the input voltage. E701 Abnormal rise in sewing machine motor drive voltage. Turn off the power, and then check the voltage. E705 Abnormal drop in power supply voltage. Turn off the power [...]

17. TROUBLESHOOTING 168 KE-430F , BE-438F 17. TROUBLESHOOTING • Please check the following points befor e calling for repairs or service. • If the following remedies do not fix the problem, turn off the pow er switch and consult a qualified technician or the place o f purchase. CAUTION Turn off the power switch and disconnect the power co rd be[...]

17. TROUBLESHOOTING 169 KE-430F , BE-438F Problem Cause Remedy Ref. Upper thread tension is too strong. Adjust the upper thread tension. CD Instruction manual Needle is installed incorrectly . Install the needle correctly . CD Instruction manual Thread is too thick for the needle. Use the correct thread for the needle. P . 103 Thread take-up spring[...]

17. TROUBLESHOOTING 170 KE-430F , BE-438F Problem Cause Remedy Ref. Movable knife is blunt. Replace the movable knife. P. 1 1 1 Fixed knife is blunt. Sharpen or replace the fixed knife. P. 1 1 1 Adjust the position of the shuttle race thread guide. P . 108 Movable knife does not pick up the thread. Adjust the needle bar lift amount. P . 107 The mov[...]

18. 7-SEGMENT DISPLA Y LIST 171 KE-430F , BE-438F 18. 7-SEGMENT DISPLA Y LIST 4268M[...]

MEMO 172 KE-430F, BE-438F[...]

MEMO 173 KE-430F, BE-438F[...]

SER VICE MANUAL © 201 1 Brother Industries, Ltd. All Rights Reserved. KE-430F , BE-438F I0070967B 201 1.04. B (2)[...]