Brother BE-438HS Service Manual Download

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14. ELECTRIC MECHANISM

211

KE-430HX/KE-430HS, BE-438HX/BE-438HS

Error status #23 Error code is displayed after the sewing machine operates (sewing program is sewn several times).

Probable causes

Check/ repair/ adjust

Parts to be replaced

1. 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 minutes or more.

b. Turn the power back on, and OK if operation

is normal.

c. If the area around the motor is not hot, carry

out steps 1 to 5 in #18.

* Avoid repeated sewing of sewing data that

contains 15 stitches or less.

Power supply motor PCB
assembly
Motor 430 assembly

Error status #24 USB memory read/write mode cannot be activated.

Probable causes

Check/ repair/ adjust

Parts to be replaced

1. If “E420” is displayed, the USB

memory is incorrectly inserted.

a. Check the direction of insertion of the USB

memory.

b. Check the insertion of the USB memory.

2. If “E420” is displayed, the USB

memory is incorrectly formatted.

Check the format of the USB memory.

3. Malfunction of USB memory

Use a PC to check if the contents of the USB
memory can be read.

4. Malfunction of operation panel

See #13.

Operation panel assembly

3951B

Summary of Contents for BE-438HS

Page 1: ...HX KE 430HS BE 438HX BE 438HS Please read this manual before making any adjustments ELECTRONIC DIRECT DRIVE LOCKSTITCH BAR TACKER ELECTRONIC DIRECT DRIVE LOCKSTITCH BUTTON SEWER SERVICE MANUAL SERVICE MANUAL ...

Page 2: ...anual 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 product some details of this manual may not be the same as those for the product you purchased If you have any questions regarding this product please contact a Brother dealer ...

Page 3: ...structions which follow this term indicate situations where failure to follow the instructions could result in death or serious injury CAUTION The instructions which follow this term indicate situations where failure to follow the instructions may result in minor or moderate injury Symbols This symbol indicates something that you should be careful of The picture inside the triangle indicates the n...

Page 4: ... disconnect the power cord from the wall outlet Lightning may cause problems with correct operation Do not connect anything to the USB port other than the USB memory If this is not observed problems with operation may result Installation Machine installation should only be carried out by a qualified technician Contact your Brother dealer or a qualified electrician for any electrical work that may ...

Page 5: ...ch all safety devices before using the sewing machine If the machine is used without these devices attached injury may result Do not touch any of the moving parts or press any objects against the machine while sewing as this may result in personal injury or damage to the machine Secure the table so that it will not move when tilting back the machine head If the table moves it may crush your feet o...

Page 6: ... when carrying out some adjustment be extremely careful to observe all safety precautions Secure the table so that it will not move when tilting back the machine head If the table moves it may crush your feet or cause other injuries Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause...

Page 7: ...over Thread take up cover Side cover Rear cover etc 4 Be careful to avoid injury from the moving thread take up 9 KE 430HX only Do not hold this part when tilting the machine head back otherwise problems with operation or injury may occur 5 Be careful not to get your hands caught when returning the machine head to its original position after it has been tilted 10 High temperature warning display 6...

Page 8: ... 430HX KE 430HS BE 438HX BE 438HS vi Thread take up cover Eye guard Finger guard KE 430HX only 2559B Oil tank 4010B DT solenoid cover Side cover Rear cover Transformer box 100V 110V 380V 400V 3854B 3856B ...

Page 9: ...counter 63 5 13 Using the production counter 64 5 14 Using the garment counter 65 5 15 Split setting 66 5 16 Copying programs Additional program 67 5 17 Uniform tension correction 68 5 18 Using USB memory 69 5 18 1 Structure of a USB memory 69 5 18 2 Preparation for reading writing data 70 5 18 3 Reading all data 71 5 18 4 Writing all data to USB memory 72 5 18 5 Reading additional pattern data 74...

Page 10: ...S 140 9 11 Adjusting the holding pressure BE 438HX HS 141 9 12 Adjusting the position of the button clamp BE 438HX HS 141 9 13 Adjusting the thread wiper 142 9 14 Adjusting the tension release amount KE 430HX BE 438HX 143 9 15 Adjusting the backlash amount play of the lower shaft gear 144 9 16 Adjusting the needle cooling 145 9 17 Checking the machine head switch 146 9 18 Adjusting the main shaft ...

Page 11: ...read winding amount is incorrect 180 13 18 Operation panel display freeze and operation is not possible 181 13 19 Sewing machine does not operate when the power is turned on 181 14 ELECTRIC MECHANISM 182 14 1 Precautions at the time of adjustment 182 14 2 Components inside and outside the control box and in the operation panel 183 14 3 Fuse explanation 184 14 4 Connectors 185 14 4 1 Connector posi...

Page 12: ...ook Lubrication method Semi dry Minimum lubrication Semi dry Minimum lubrication Digital tension set Standard equipment Standard equipment Thread wiper device Standard equipment Thread trimmer device Standard equipment Thread nipper device 03 0K 01 specifications Standard equipment 05 specifications Option 03 05 specifications option Option Illumination LED Standard equipment Data storage method F...

Page 13: ...X 40 sewing area set other than for Europe SB7777 001 for Europe SB7777 0E1 for a sewing area of 50 x 40 mm The normal sewing area size is 40x30 3 Use the optional button clamp L SA9303 201 for diameters of 20 mm or greater 4 No guarantees of operation can be given for any media 5 The number of sewing patterns and the number of stitches that can be recorded will vary depending on the number of sti...

Page 14: ... machine should be carried by the arm by two people as shown in the illustration When holding the machine head do not hold it by the pulse motor 1 otherwise it may damage the pulse motor Tilting back the machine head 1 Pack away any tools which are near the table 2 Secure the foot A so that the table will not move and then pull the arm with both hands to tilt back the machine head While supporting...

Page 15: ...ve the pattern that you want to sew into that program number 2 Set the parameters such as X scale Y scale sewing speed and upper thread tension This completes the program When actually sewing select the program number and then start sewing 1 Depending on the memory switch settings the height of the work clamp button clamp can also be set by means of parameters 2 The PS300B can be used to create pa...

Page 16: ...ers for these programs can be set Patterns S001 to S089 S001 to S064 for the 438HX HS are listed in 2 2 List of sewing patterns KE 430HX HS and 2 3 List of sewing patterns BE 438HX HS in the instruction manual Pattern S001 Program S001 Parameter Program S002 Pattern S002 Parameter Program S003 Pattern S003 Parameter Program S089 Pattern S089 Parameter Patterns A001 to A500 Programs A001 to A500 Pa...

Page 17: ...ctions for sewing program numbers pattern numbers and parameters Standard programs Additional available patterns Initial value Preset Set by user Model 430H 438H 430H 438H 430H 438H Sewing program No S001 S089 S001 S064 A001 to A500 500 programs Pattern No S001 S089 S001 S064 A001 A500 Fixed at same number as sewing program Number set when program is created Parameter X scale 20 200 100 Y scale 20...

Page 18: ...he software version 4 7 Maintenance information list 4 8 Checking the error history 4 9 Making protection settings Adjustment menu 9 18 Adjusting the main shaft motor reference position 9 19 Adjusting the X and Y feed motor home position 9 20 Adjusting the work clamp motor home position 9 21 Adjusting the thread nipper motor position 9 22 Setting method for standard depression strokes Foot switch ...

Page 19: ...4 FUNCTION SETTINGS KE 430HX KE 430HS BE 438HX BE 438HS 8 If the power is turned on without any key operations Turn on power ...

Page 20: ...lay only the numbers of memory switches that have been changed from default settings 2 When the or key 3 is pressed the memory switches with current values that are different from their initial values are displayed in order 3 Change the memory switch parameters 1 Press the or key 4 to change the memory switch number 5 If the value that is displayed is different from the value that is currently set...

Page 21: ... and illuminate and this means that the parameter setting is confirmed If you change the memory switch number or touch the back key to switch the screen without touching the OK key you can cancel the changes 5 Exiting the memory switch setting screen At the special menu screen press the home key to close the special menu and switch to the home screen 5 ...

Page 22: ...position 052 ON OFF ON Work clamp button clamp operation during pause split program OFF The work clamp button clamp cannot rise automatically during a pause split program ON The work clamp button clamp can rise automatically during a pause split program 060 0 3000 ms 0 10 Time after the work clamp button clamp drops until the upper shaft starts rotating 070 1 2 1 1 Type of foot switch used 1 Foot ...

Page 23: ...2 Use memory switch No 071 to select the desired operation mode from the following In the following table the term work clamp refers to the work clamp button clamp Setting value No 071 Foot switch Neutral 1st step 2nd step 1 Work clamp raised Work clamp maximum drop Sewing machine start 2 Work clamp raised Work clamp drop to intermediate height Work clamp maximum drop Sewing machine start Release ...

Page 24: ...mp raised Work clamp maximum drop Work clamp raised Sewing machine start 1 2 Work clamp raised Work clamp maximum drop 1 Work clamp raised Work clamp drop to intermediate height Work clamp drop to intermediate height Work clamp maximum drop Work clamp raised Work clamp maximum drop Sewing machine start 1 3 Work clamp maximum drop 1 Work clamp raised Sewing machine start 1 4 Work clamp raised Work ...

Page 25: ...art Enabled when No 100 is set to OFF 438H 200 2800 sti min 152 430H 200 3300 sti min 1 100 2nd stitch sewing speed at the sewing start Enabled when No 100 is set to OFF 438H 200 2800 sti min 153 430H 200 3300 sti min 1 100 3rd stitch sewing speed at the sewing start Enabled when No 100 is set to OFF 438H 200 2800 sti min 154 430H 200 3300 sti min 1 100 4th stitch sewing speed at the sewing start ...

Page 26: ...speed will be limited by this value 438H 1200 2800 sti min 2800 164 ON OFF OFF Thread trimming operation disallowed ON All thread trimming operations are disabled OFF Thread trimming is carried out in accordance with the sewing data 165 20 20 degrees 0 1 Stop position for needle lift by reverse operation Becomes higher Becomes lower 166 10 500 ms 150 10 Delay time until reverse operation starts du...

Page 27: ...eding speed 1 100 mm s Slow 2 200 mm s 3 300 mm s 4 400 mm s 5 500 mm s Fast 252 ON OFF OFF High speed test feed method Enabled when No 200 is set to OFF ON High speed feeding starts at the same time test feeding starts OFF Normally slow but becomes faster when the foot switch is depressed to the 1st step for a 2 pedal foot switch when the work clamp switch is depressed 253 1 0 2 0 1 Moving method...

Page 28: ...ming becomes earlier Feed timing becomes later 438H 100 100 degrees 265 430H 80 80 degrees 2 1 Changes the feed timing for the 2nd stitch before the sewing end Feed timing becomes earlier Feed timing becomes later 438H 100 100 degrees 266 430H 80 80 degrees 2 1 Changes the feed timing for the 1st stitch before the sewing end Feed timing becomes earlier Feed timing becomes later 438H 100 100 degree...

Page 29: ...hanges the feed timing reference for the first three stitches at the sewing start 0 Feed start reference Makes the timing uniform at the start of feed 1 Needle up reference Changes the timing at the start of feed so that the feed moves half the feed width when the needle bar is at its highest position 2 Feed end reference Makes the timing uniform at the end of feed 438H 1 270 0 1 1 1 Moving method...

Page 30: ... No 410 407 OFF 1 89 1001 1500 2001 2100 3001 3030 OFF Program No assigned to the F1 key Enabled when No 406 is set to ON 1 89 S001 S089 1001 1500 A001 A500 2001 2100 U001 U100 3001 3030 C001 C030 408 OFF 1 89 1001 1500 2001 2100 3001 3030 OFF Program No assigned to the F2 key Enabled when No 406 is set to ON 1 89 S001 S089 1001 1500 A001 A500 2001 2100 U001 U100 3001 3030 C001 C030 409 OFF 1 89 1...

Page 31: ...be set for each program using parameters The offset amount is retained when the power is turned off and when the program number X scale or Y scale is changed 469 ON OFF OFF Tension value setting ON Operation is according to individual tension values Setting is only possible for additional programs For standard programs the common tension value is used For user programs and cycle programs this sett...

Page 32: ...d OFF Not used 555 ON OFF OFF Sewing start sensing sensitivity for thread breakage sensor available by special order ON 10 stitches at sewing start OFF 5 stitches at sewing start 565 1 0 2 0 1 Tension release solenoid power setting 0 Standard 1 Greater force 2 Maximum 566 2 ON OFF 430H 01 ON Thread nipper device installation ON Installed The thread nipper device only operates when all of the follo...

Page 33: ... device is not to operate set to 0 Error processing settings 600 699 No Setting range Initial value Setting units Setting details 650 1 0 2 0 1 Error release method when operation has stopped 0 Press the RESET key on the operation panel 1 Press the RESET key on the operation panel or the STOP switch available by special order 2 Press the RESET key on the operation panel or the external switch EXIN...

Page 34: ... 2000 sti min thread winding will be limited to 2000 sti min OFF Upper limit is not limited to 2000 sti min Thread winding is carried out at the speed specified at the operation panel Specification and destination settings 800 899 No Setting range Initial value Setting units Setting details 850 1 430H 01 1 3 5 K 4 1 Specification code setting The 438H has only 03 specifications so this will not be...

Page 35: ...ecial menu screen select Input signal check 3 The display will switch to the input signal check screen and the item number 1 item name 2 and input status 3 will be displayed 4 Press the or key 4 to select the item to be checked Press the back key 5 to return to the special menu screen 2 To exit from the special menu At the special menu screen press the home key to close the special menu and switch...

Page 36: ...ipping side OFF when at thread trimming side Remove the cover and then operate the thread trimmer cam by hand Encoder of T motor 9999 9999 Remove the cover and then operate the thread trimmer cam by hand IN 05 Needle up signal ON OFF ON in the needle up region OFF in any other region Turn the pulley by hand Main shaft angle 0 359 The forward turning direction the direction of the arrow up Turn the...

Page 37: ...ey option and then press it Thread breakage detector ON OFF ON when detected OFF when not detected NO when not connected ON is only displayed at the instant the thread breakage sensor detects a breakage Pass a thread under the thread breakage sensor option IN 11 Home position sensor of X motor ON OFF ON when detected OFF when not detected Home position sensor of Y motor ON OFF ON when detected OFF...

Page 38: ... signal check 3 The item number 1 and item name 2 will be displayed 4 Press the or key 3 to select the item to be checked If you select items OUT 08 or OUT 09 the output number 4 will also be displayed The output number can be changed by touching the or key 5 Press the back key 6 to return to the special menu screen 2 To exit from the special menu At the special menu screen press the home key to c...

Page 39: ... has elapsed OUT 06 Illumination LED ON while OK key is being pressed and OFF while it is released OUT 07 Caution LED ON while OK key is being pressed and OFF while it is released OUT 08 Valve output Press or to select the valve number ON while OK key is being pressed and OFF while it is released 1 Port output 1 2 Port output 2 3 Port output 3 4 Needle cooling 5 Eyelet closing 6 Optional valve out...

Page 40: ... program version screen each time you press the change key At the application version screen the main control program version the panel control program version the motor control program version and the FPGA version are displayed At the boot program version screen the main boot program version the panel boot program 1 version the panel boot program 2 version and the motor boot program version are d...

Page 41: ...tion is selected in the special menu screen the display switches to the maintenance information screen 3 The maintenance screen number 2 maintenance information 3 and the corresponding value 4 will be displayed 4 Press the or key 5 to select the screen 0 to 4 that you would like to check Press the back key 6 to return to the special menu screen 2 To exit from the special menu At the special menu s...

Page 42: ...for additional programs Sewing parameters for all sewing programs Data for all memory switches 2 Export maintenance information When the OK key is touched the following machine information is written to the storage media Data for all memory switches Error log 3 Serial No The unique 8 digit number which is assigned to the sewing machine is displayed 4 Clear oil counter The total number of stitches ...

Page 43: ... in order starting from the left NOTE The following errors which can be reset without needing to turn off the power are not entered into the error log E010 E011 E012 E020 E025 E035 E110 E420 E422 E424 E425 E428 E474 E500 E502 E510 E511 E512 E600 4 Press the or key 1 to change the screen one page at a time Up to 99 error items 01 99 are stored in order starting from the newest The error with histor...

Page 44: ... of the error history Once clearing is finished the buzzer will sound for 1 second and all error items will be displayed as E Press the back key 3 to return to the error history screen If you press the back key 3 without pressing the OK key the error history will not be cleared 4 To exit from the special menu At the special menu screen press the home key to close the special menu and switch to the...

Page 45: ...desired setting 1 Protection settings cannot be carried out unless USB memory is inserted 2 Protection settings can be carried out at any time 3 Press the OK key to confirm the setting 3 Individual selection of protection setting Protection settings can be carried out individually for each function For details refer to List of functions that can be protected 1 At the protection setting screen sele...

Page 46: ...an turn protection on for all functions by following the operation below 1 At the Individual selection of protection setting screen select the ALL key 3 2 All items will have a check mark alongside them You can clear all of the check marks by pressing the ALL key again 3 Press the OK key to confirm the setting 3 ...

Page 47: ...perations in the home screen are disallowed Change tension Tension change operations in the home screen are disallowed Change section Pattern editing operations in the setting menu are disallowed Slow start setting Slow start setting operations in the setting menu are disallowed Parallel movement setting Offset setting operations in the setting menu are disallowed Lower thread counter setting Lowe...

Page 48: ... mode 1 While pressing the TEST key turn on the power to switch to the version update selection screen 3 Version update selection mode 1 Check that the version number 1 for the main control program that you are going to update is correct 2 Touch the main control program item 1 in the list and then touch the OK key to start the version update 4 While version updates are running 1 While version upda...

Page 49: ...sing the TEST key turn on the power to switch to the version update selection screen 3 Version update selection mode 1 Check that the version number 1 for the panel control program that you are going to update is correct 2 Touch the panel control program item 1 in the list and then touch the OK key to start the version update 4 While version updates are running 1 While version updating is in progr...

Page 50: ...sing the TEST key turn on the power to switch to the version update selection screen 3 Version update selection mode 1 Check that the version number 1 for the motor control program that you are going to update is correct 2 Touch the motor control program item 1 in the list and then touch the OK key to start the version update 4 While version updates are running 1 While version updating is in progr...

Page 51: ...ogram No A002 stitch count 30 Section 1 Section 2 Section 3 Section 4 Needle Drop No 1 Needle Drop No 2 Needle Drop No 10 Needle Drop No 28 Upper thread tension 75 Upper thread tension 180 Upper thread tension 120 Upper thread tension 75 Example Operation when pattern editing for additional program No A002 has been set as follows for sewing Tension code diagram Vertical axis Tension value Horizont...

Page 52: ...Is editing complete Are the edited contents to be Add a section at the position where it is to be added Refer to 5 1 3 Checking pattern data and 5 1 5 Adding sections Add a tension code at the point to be changed Refer to 5 1 3 Checking pattern data and 5 1 6 Changing tension codes within a section Select the section to be deleted and then delete it Refer to 5 1 3 Checking pattern data and 5 1 7 D...

Page 53: ...at least one additional program and to set memory switch No 469 to ON Switching to the edit pattern screen is only possible with the 430HX 438HX 2 Touch the program No the pattern image can also be touched 2 to switch to the program selection screen or press the program number change key or to select the additional program number to be added Only the additional program numbers which are currently ...

Page 54: ...ection Moves in the forward direction Moves in the reverse direction 2 Exit pattern editing mode Touch the back key or the menu key The display will return to the setting menu screen 5 1 4 Copying sewing data Editing adding changing or deleting of the tension codes within pattern data is limited to additional programs Because of this if you would like to edit a standard program which has already b...

Page 55: ...elect the tension 0 to 300 to be used in the newly added section 3 Add the section To confirm the addition press the add section key 2 A new section with the selected tension will be added from the current needle position The section numbers for all subsequent sections will be incremented by 1 as a result If you press the needle movement change key or before pressing the add section key the adding...

Page 56: ...k clamp button clamp to the start of the section you would like to change 2 Change the tension Press the tension change keys 2 to select the desired tension 0 to 300 3 Confirm the change To confirm the change press the key 3 The change will be applied and the tension for the currently selected section will change to the newly set tension value If you press the needle movement change key or before ...

Page 57: ...ll be deleted As well as the current section being deleted the section numbers for all subsequent sections will be decremented by 1 as a result The start section cannot be deleted All sections after the deleted section will move forward by one section and the tension values will become the same 3 To delete all sections You can delete all sections by pressing the reset key 3 Only the settings for s...

Page 58: ...llel movement setting in the menu to switch to the parallel movement setting screen The amount of parallel movement in which has currently been set the X and Y directions will be displayed in the parallel movement setting screen in mm units 3 Depress the foot switch to the 2nd step Home position detection will be carried out The settings can be changed 4 Switch to X or Y direction You can touch th...

Page 59: ...it the parallel movement settings Touch the OK key The parallel movement amounts in the X direction and Y direction will be confirmed and the display will return to the setting menu screen If you touch the back key the menu key or the home key without touching the OK key you can cancel the changes without saving them NOTE If you change the program number the X scale or the Y scale the movement amo...

Page 60: ... would like to display only the numbers of memory switches that have been changed from default settings Touch the or key 2 The numbers of memory switches that have been changed from default settings will appear in order 3 Change the memory switch parameters Touch the key or the key 3 to change the setting value 4 If the setting value has not been confirmed the display will blink You can make the i...

Page 61: ... Refer to 4 3 List of memory switches for technicians for details on memory switch Nos 151 to 155 ON Slow start patterns can be selected from the slow start settings in the setting menu screen 200 Single stitch test feed 430H OFF OFF When the foot switch is depressed to the 2nd step start switch test feed moves automatically to the final stitch and when the foot switch is depressed to the 1st step...

Page 62: ...nment to F3 key OFF OFF 1 100 S001 S089 1001 1500 A001 A500 2001 2100 U001 U100 3001 3030 C001 C030 If memory switch No 406 is set to ON operation switches to the program number which has been set 410 Assignment to F4 key OFF OFF 1 100 S001 S089 1001 1500 A001 A500 2001 2100 U001 U100 3001 3030 C001 C030 If memory switch No 406 is set to ON operation switches to the program number which has been s...

Page 63: ...t pattern 430HX HS Medium weight materials 03 knitted wear 0K light weight materials 01 1 2 3 4 5 6 7 8 9 Sewing speed for the 1st stitch 200 200 300 400 400 400 400 800 1 500 Sewing speed for the 2nd stitch 200 300 400 400 500 600 800 1 200 3 000 Sewing speed for the 3rd stitch 300 400 500 600 800 800 1 200 2 500 3 300 Sewing speed for the 4th stitch 500 600 700 900 1 200 1 200 2 500 3 300 3 300 ...

Page 64: ...g the changes The brightness level can be set to a value from 0 to 9 If the brightness level is set to 0 the LED will switch off and if it is set to a number from 1 to 9 the LED brightness will be greater if a larger number is selected as the setting 5 6 Setting additional programs Sewing data which has been created externally can be loaded from USB memory and registered as additional programs In ...

Page 65: ...gram number a check mark will appear against the program number in the list Multiple program numbers can be selected You can select all cycle programs in the list A001 to A500 by pressing the ALL key 2 3 Delete the additional programs Once all the additional programs to be deleted have been selected you can press the delete key 3 to delete the registered sewing patterns which have been assigned to...

Page 66: ...displayed in the list if it has not been registered in a program will be displayed below the program numbers 2 Select a program number that you would like to change the parameter for Set the program number that you would like to register from the on screen list Touch the back key or the menu key to return to the setting menu screen Restrictions due to program type selected Standard program User an...

Page 67: ...ey The display will return to the user program editing screen and the edited parameters will be applied If you press the back key 5 without pressing the OK key you can cancel the parameter changes 7 Repeat steps 4 to 6 to register the settings for each item 8 Register the settings for the user program Once all the items have been set touch the OK key in the user program editing screen The display ...

Page 68: ...l USB source or by using the program copy function If there are no additional programs which have been registered there will be no response when this tab is touched X scale 20 to 200 Limited by available sewing area Initial value is 100 The setting can be displayed in mm units by setting memory switch No 402 to ON Y scale 20 to 200 Limited by available sewing area Initial value is 100 The setting ...

Page 69: ...work clamp height H 10 mm to 17 mm Initial value is 14 438HX HS Intermediate work clamp height L 1 mm to 13 mm Initial value is 1 Maximum work clamp height H 6 mm to 13 mm Initial value is 10 It is possible to change the value of intermediate work clamp height L only when memory switch No 071 is set to 2 or memory switch No 072 is set to 2 or 5 Initial value ...

Page 70: ...te from the list on the screen Select the number by which the program has been registered When you touch a program number a check mark will appear against the program number in the list Multiple program numbers can be selected You can select all user programs in the list U001 to U100 by pressing the ALL key 2 3 Delete the user programs Once all the user programs to be deleted have been selected yo...

Page 71: ...Touch the key 1 or the key 2 to select the cycle program number If no cycle program has been registered will be displayed after the program number Select the program number for the program you would like to edit and touch the list The cycle program edit screen will be displayed 3 Select the program number to be registered in step 1 Select the step No 01 on the top of the list A check mark will app...

Page 72: ...step in between two already registered steps add check marks to the two existing steps to select them and then touch the step select key The selected user program will be registered in between the two selected steps at this time 7 End cycle program setting mode Touch the OK key The display will return to the select cycle program screen This completes the registering of cycle programs 8 If you woul...

Page 73: ... program which you would like to delete from the list on the screen Select the number by which the program has been registered When you touch a program number a check mark will appear against the program number in the list Multiple program numbers can be selected You can select all cycle programs in the list C001 to C030 by pressing the ALL key 2 3 Delete the cycle programs Once all the cycle prog...

Page 74: ... 00000 the lower thread counter will not operate If you touch the reset key 4 the setting will become 00000 3 Apply the changed parameter setting Touch the OK key The value will be applied and the display will return to the menu 1 If you touch the back key without touching the OK key you can cancel the changes 1 If you have switched from the home screen the display will return to the home screen L...

Page 75: ...counter value can be set from 0000000 to 9999999 If you press the reset key 4 during setting mode the value will become 0000000 3 Apply the changed parameter setting Touch the OK key The value will be applied and the display will return to the menu 1 If you touch the back key without touching the OK key you can cancel the changes 1 If you have switched from the home screen the display will return ...

Page 76: ... 09999 If you press the reset key 4 during setting mode the value will become 00000 3 Apply the changed parameter setting Touch the OK key The value will be applied and the display will return to the setting menu screen 1 If you touch the back key without touching the OK key you can cancel the changes 1 If you have switched from the home screen the display will return to the home screen Garment co...

Page 77: ...it setting in the setting menu screen to switch to the split setting screen 3 Select the split number From the split setting screen touch the or key 1 to set the number 2 of the sewing split section The setting values are displayed in the order in which the split codes appear and 1 indicates the sewing start position 4 Confirm the split number Once the split section to be sewn has been selected yo...

Page 78: ...the copy destination program number Select from additional program numbers A001 to A500 When a program number is selected the display will switch immediately to the copy program screen The destination program number for copying will blink 3 Select the copy source program Select from the list to change the number of the standard program or additional program to be copied When a program number is se...

Page 79: ...he correct tension screen Touch the menu key to switch to the setting menu Touch Correct tension in the menu to switch to the correct tension screen 2 Select the correction value Press the or key 1 to change the uniform correction value 2 in the tension value display 3 Confirm the correction value Touch the OK key The correction value will be confirmed and it will be applied to the upper thread te...

Page 80: ... that the USB memory not be reformatted The recommended USB memory is those sold by SanDisk and Panasonic USB memory from other manufacturers may use different formatting methods and may not work correctly as a result For more information refer to the documentation provided with the purchased USB memory This product is compatible with USB memory that has been formatted using the FAT16 32 method US...

Page 81: ...mber 2 to read from or write to Touch the back key to return to the setting menu screen List of Read Write data screen items Item no Menu display Setting item 1 Read all data The contents of items 3 to 8 are read from the USB memory 2 Write all data The contents of items 3 to 8 are written to the USB memory 3 Read added program Additional program data is read from the USB memory 1 4 Write added pr...

Page 82: ...achine s memory If any one of additional program data memory switch data sewing pattern data or cycle program data does not exist in the USB memory an error buzzer will sound 3 When the display returns to the status in step 1 writing of the sewing machine data is complete If you would like to use any other read write modes press the or key to select the mode and then run it 4 Exit read write mode ...

Page 83: ... The buzzer will sound and the sewing program data cycle program data memory switch settings and additional pattern data will be copied to the USB memory 3 When the screen display returns to the status before writing started writing of the sewing machine data is complete If you would like to use any other read write modes press the or key to select the mode and then run it 4 Exit read write mode A...

Page 84: ...e buzzer will sound and the sewing program data cycle program data memory switch settings and additional pattern data will be copied to the USB memory 3 When the screen display returns to the status before writing started writing of the sewing machine data is complete If you would like to use any other read write modes press the or key to select the mode and then run it 4 Exit maintenance informat...

Page 85: ...n the memory ALL will be the only thing displayed 3 Press the OK key Reading data will be displayed on the screen until reading is complete Immediately after the key is pressed the buzzer will sound and the selected pattern data will be read from the USB memory and copied into the sewing machine s memory If no additional program data exists in the USB memory an error will be generated 4 When the s...

Page 86: ...t are in the sewing machine If there is no data in the machine ALL will be the only thing displayed 3 Press the OK key Writing data will be displayed on the screen until writing is complete Immediately after the key is pressed the buzzer will sound and the selected pattern data will be read from the USB memory and copied into the sewing machine s memory 4 When the screen display returns to the sta...

Page 87: ... the sewing programs and cycle programs will then be set If no sewing program data or cycle program data exists an error buzzer will sound 3 When the screen display returns to the status before reading started reading of the program data is complete If you would like to use any other read write modes press the or key to select the mode and then run it 4 Exit read write mode At the Read Write data ...

Page 88: ...nd cycle program data will be copied to the USB memory 3 When the screen display returns to the status before writing started writing of the program data is complete If you would like to use any other read write modes press the or key to select the mode and then run it 4 Exit read write mode At the Read Write data screen you can press the back key or the menu key to return to the setting menu In a...

Page 89: ...ory and the memory switch settings will then be applied If no memory switch data exists an error will be generated 3 When the screen display returns to the status before reading started reading of the memory switch data is complete If you would like to use any other read write modes press the or key to select the mode and then run it 4 Exit read write mode At the Read Write data screen you can pre...

Page 90: ...setting data will be copied to the USB memory 3 When the screen display returns to the status before writing started writing of the memory switch data is complete If you would like to use any other read write modes press the or key to select the mode and then run it 4 Exit read write mode At the Read Write data screen you can press the back key or the menu key to return to the setting menu In addi...

Page 91: ...ion screen select Export maintenance information item 2 Refer to 4 7 Maintenance information list 2 Press the OK key The buzzer will sound and the error log data and memory switch log data will be copied to the USB memory 3 When the screen display returns to the status before writing started writing of the log data is complete If you would like to use any other read write modes press the or key to...

Page 92: ...2 Lower shaft and hook mechanisms 3971B The mechanisms operate in the order of the numbers given in the illustrations 1 Pulley 2 Upper shaft 3 Thread take up crank 4 Needle bar crank 5 Needle bar connecting 5 Thread take up rod assembly lever assembly 6 Needle bar clamp 7 Needle bar 3970B 1 Pulley 2 Upper shaft 3 Crank rod assembly 4 Rock gear shaft F assembly 5 Rock gear shaft R assembly 6 Rock g...

Page 93: ...plate assembly 9 Work clamp arm lever plate 10 Work clamp arm lever shaft 11 Work clamp arm lever 12 Work clamp When the work clamp pulse motor is turned off the work clamp lifter plate rises and work clamps lower 8 Button clamp rod 9 Button clamp lever 10 Button clamp holder hook assembly 11 Button clamp holder shaft 12 Button clamp When the work clamp pulse motor is turned off the button clamp r...

Page 94: ...hen the work clamp pulse motor is turned off the thread wiper operates in the opposite direction 1 Pulse motor P assembly 2 Gear 16 3 Cam gear 4 Cam shaft 5 Thread wiper cam 6 Thread wiper roller 7 Thread wiper driving lever 8 Thread wiper rod assembly 9 Connecting plate 10 Thread wiper arm assembly ...

Page 95: ...feed rack shaft 4 Y feed rack shaft clamp 5 Feed bar sub assembly 6 5 Feed mechanism Sewing patterns are created through combinations of X and Y movements 3975B 3976B Y direction X direction 1 Pulse motor X assembly 2 Feed gear 3 X feed gear 4 X feed lever 5 Regulator block assembly 6 Feed bar sub assembly ...

Page 96: ...otor Y assembly 1 Fixed knife 2 Thread trimmer cam 3 Thread trimmer collar H 4 Thread trimmer cam lever 5 Thread trimmer lever 6 Thread trimmer link 7 Thread trimmer rod 8 Movable knife lever 9 Movable knife connecting plate 10 Movable knife 6 6 Thread trimmer mechanism 3977B ...

Page 97: ...nsion solenoid 2 Bolt 3 Tension release bar 4 Tension release pin KE 430HX BE 438HX 1 Pulse motor Y assembly 2 Thread trimmer cam 3 Thread trimmer collar H 4 TN driving lever 5 TN connecting plate R 6 TN connecting plate assembly F 7 Thread nipper D assembly 8 Thread nipper U KE 430HS BE 438HS 3776B 1 Tension release solenoid 2 Bolt 3 Tension release bar 4 Tension release pin ...

Page 98: ...hey can cause vomiting and diarrhea Keep the oil out of the reach of children When replacing parts and installing optional accessories be sure to use only genuine Brother parts Brother will not be held responsible for any accidents or problems resulting from the use of non genuine parts If any safety devices have been removed be absolutely sure to re install them to their original positions and ch...

Page 99: ...rews 4 pcs 2 Top cover 3 Screws 4 pcs 4 Rear cover 5 Screws 4 pcs 6 Side cover 7 Bolts 2 pcs 8 Eye guard assembly 9 Screw 10 LED cover 11 Screws 3 pcs 12 Face plate 13 Face plate packing 14 Shoulder screws 8 2 2 pcs 15 Washers wave spring 2 pcs 16 Shuttle race cover assembly ...

Page 100: ... Push upward and remove horizontally 7 2 Work clamp arm mechanism 1 Bolts 2 pcs 2 Plain washers 2 pcs 3 Work clamp arm assembly 4 Screws 2 pcs 5 Feed plate KE 430HX KE 430HS 3982B 3983B BE 438HX BE 438HS 2 Set screws 2 pcs Loosen 3 Button clamp holder shaft 4 Button clamp holder 5 Screws 2 pcs 6 Feed plate ...

Page 101: ...le plate 7 Set screw 8 Needle 9 Needle bar thread guide 10 Air cylinder cap assembly 11 Screw 12 Needle bar D assembly Pull out 13 Needle bar clamp 14 Slide block 15 Rubber caps 3 pcs 16 Set screws 2 pcs Loosen 17 Set screws 2 pcs Loosen 18 Thread take up spring shaft assembly 19 Set screw collar 20 Screw Loosen 21 Needle bar connecting rod assembly 22 Rubber cap 23 Set screws 3 pcs Loosen 24 Need...

Page 102: ...edle bar thread guide 6 Screw 7 Wick holder assembly 8 Rubber cap 9 Screw 10 Needle bar Pull out 11 Needle bar clamp 12 Slide block 13 Rubber caps 3 pcs 14 Set screws 2 pcs Loosen 15 Set screws 2 pcs Loosen 16 Thread take up spring shaft assembly 17 Set screw collar 18 Screw Loosen 19 Needle bar connecting rod assembly 20 Rubber cap 21 Set screws 3 pcs Loosen 22 Needle bar crank 23 Thread take up ...

Page 103: ...4 Thread trimmer cam lever shaft 15 Washers 2 pcs 16 Thread trimmer cam 17 Socket bolt S P washer 18 Thread trimmer lever 19 Thread trimmer cam lever 20 Motor bracket rear assembly 21 Bolts 2 pcs 22 Thread trimmer link 23 Shoulder screw 6 5 3 24 Thread trimmer rod 25 Shoulder screw 6 1 8 26 Movable knife connecting plate 27 Set screw Loosen 28 Shaft movable knife lever 29 Movable knife lever 30 Mo...

Page 104: ...screw 3 Washer wave spring 4 Washer 5 Thread nipper lever 6 Bolts 2 pcs 7 Thread nipper connecting plate R 8 Thread nipper connecting plate F assembly 9 Thread nipper shoulder screw 10 Thread nipper D assembly 11 Thread nipper collar 12 Thread nipper spacer 13 Shoulder screw 6 0 9 14 Thread nipper U 15 Spring extension 16 Screws 2 pcs 17 Plain washers 2 pcs 18 Spring hook plate ...

Page 105: ...ging lubricating oil When the oil change warning is displayed Be careful not to spill oil on the pulse motor X assembly 3 Insert the tool 2 into the notch on the right side and then turn the tool 2 to remove the bed bottom cover from the bed 1 Oil 2 Tool 3 Pulse motor X assembly 1 Screws 10 pcs 2 Bed bottom cover assembly 3 Screws 2 pcs 4 Lower shaft felt assembly 5 Bolt 6 Crank rod washer Continu...

Page 106: ...et screw Loosen 20 Screws 2 pcs 21 Plain washers 2 pcs 22 Bobbin winder unit 23 Set screws 2 pcs Loosen 24 Set screws 2 pcs Loosen 25 Set screws 2 pcs Loosen 26 Set screws 2 pcs Loosen 27 Bolts 4 pcs 28 Motor assembly 29 Joint assembly 30 Oil seal 31 Upper shaft Tap out toward the rear 32 Ball bearing bush M assembly 33 Oil seal 34 Pulley gear R 35 Thread take up crank assembly Be careful not to d...

Page 107: ... the tap hole and then pull on the M3 or similar screw 1 so that the adjusting stud 3 can be removed 1 Bolt Loosen 2 Driver 3 Adjusting stud Pull out 4 Set screw Loosen 5 Screw 6 Oil tube support 7 Screw 8 Cord holder U3 9 Shuttle race base assembly 10 Socket bolts S P washer 2 pcs 11 Splash plate 12 Rubber caps 2 pcs 13 Set screws 4 pcs Loosen Continued on next page ...

Page 108: ...s 15 Set screws 2 pcs 16 Rock gear shaft R assembly Pull backward 17 Oil seal 18 Rock gear shaft F assembly Pull forward 19 Rock gear 20 Set screws 6 pcs Loosen 21 Lower shaft assembly 22 Oil seal 23 Bearing bush assembly Tap out the oil seal 22 and the bearing bush together toward the rear 24 Bearing bush assembly 25 Bearing bush assembly 26 Oil seal ...

Page 109: ...th regulator block assembly 8 Feed bar sub assembly 9 Bolts 2 pcs 10 Screws 2 pcs 11 Feed bar support plate 12 Socket bolts S P washer 3 pcs 13 Y motor setting plate Pulse motor Y assembly 14 Y feed rack shaft 15 Screws 2 pcs 16 X feed gear cover 17 Bolt Loosen 18 X feed gear 19 Socket bolts S P washer 3 pcs 20 X motor setting plate Pulse motor X assembly 21 X feed lever Pull upward 3994B 3992B 39...

Page 110: ...4 Oil tank plate 5 Oil tank nut 6 Oil tank assembly 3995B 1 Set screw Loosen 2 Retaining ring E 3 Screws 2 pcs 4 Plain washers 2 pcs 5 Thread wiper arm assembly 6 Retaining ring E 7 Plain washer 8 O rings 2 pcs 9 Connecting plate Pull upward 10 Set screw Loosen 11 Retaining ring E 12 Plain washer 13 Wiper shaft 14 Thread wiper rod assembly Pull forward ...

Page 111: ...6 Set screws 2 pcs Loosen 7 Gear 16 8 Springs 2 pcs 9 Bolts 2 pcs 10 Spring hook 11 Set screws 2 pcs Loosen 12 Retaining ring E 13 Work clamp cam lever shaft 14 Work clamp driving lever 15 Plain washer 16 Thread wiper driving lever 17 Plain washer 18 Set screws 2 pcs Loosen 19 Set collar 20 Set screws 4 pcs Loosen 21 Work clamp cam shaft 22 Cam gear 23 Thread wiper cam Continued on next page ...

Page 112: ...ver shaft 30 Plain washer 31 Lifter lever assembly 32 Needle bar guide slide block 33 Work clamp lifter plate assembly 24 Rubber cap 25 Link shoulder screw 26 Link 27 Set screw Loosen 28 Retaining ring E 29 Lever shaft 30 Plain washer 31 Lifter lever assembly 32 Needle bar guide slide block 33 Nut 2 pcs 34 Button clamp roller shaft 35 Plain washer 36 Roller 37 Button clamp rod Pull upward 38 Set s...

Page 113: ... bracket Pull out 3 Tension release pin 4 Set screw Loosen 5 Tension stud assembly Pull out 6 Thread take up spring KE 430HX BE 438HX KE 430HS BE 438HS 1 Set screw Loosen 2 Tension bracket Pull out 3 Tension release pin 4 Nut 5 Plain washer 6 Set screw Loosen 7 Tension stud assembly Pull out 8 Thread take up spring 4000B ...

Page 114: ...X BE 438HX Tension release solenoid KE 430HS BE 438HS 5 Bolts 2 pcs 6 Spring washers 2 pcs 7 Plain washers 2 pcs 8 Solenoid setting plate 9 Bolt 10 Nut 11 Plain washer 12 Solenoid cushion 13 Tension release bar 14 Tension release spring KE 430HS BE 438HS 4001B 4004B 1 Bobbin case assembly 2 Shuttle race base setting claw Open to right and left 3 Shuttle race base 4 Shuttle hook ...

Page 115: ...7 DISASSEMBLY KE 430HX KE 430HS BE 438HX BE 438HS 104 7 15 LED mechanism 1 Bolt 2 LED setting plate 3 LED assembly 4011B ...

Page 116: ...rother will not be held responsible for any accidents or problems resulting from the use of non genuine parts If any safety devices have been removed be absolutely sure to re install them to their original positions and check that they operate correctly before using the machine To prevent accidents and problems do not modify the machine yourself Brother will not be held responsible for any acciden...

Page 117: ...mount KE 430HX BE 438HX 1 Tension release bar 2 Tension release spring KE 430HX BE 438HS 3 Tension solenoid KE 430HX BE 438HX Tension release solenoid KE 430HS BE 438HS 4 Solenoid setting plate 5 Plain washers 2 pcs 6 Spring washers 2 pcs 7 Bolts 2 pcs 8 Solenoid cushion 9 Plain washer 10 Nut 11 Bolt 12 Screws 2 pcs 13 Solenoid cover 14 Screws 2 pcs ...

Page 118: ...er 5 Nut 6 Set screw Tighten 7 Tension release pin 8 Set screw Tighten KE 430HX BE 438HX KE 430HS BE 438HS 4015B 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 4016B 1 Thread tension bracket 2 Thread take up spring 3 Tension stud assembly 4 Set screw Tighten ...

Page 119: ...asher 4 Retaining ring E 5 Set screw Tighten Small amount Adjust while referring to 9 13 Adjusting the thread wiper 4017B Tighten the set screw 5 while gently pushing the wiper shaft 2 toward the direction for installation in the arm 6 O rings 2 pcs 7 Connecting plate 8 Plain washer 9 Retaining ring E 10 Thread wiper arm assembly 11 Plain washers 2 pcs 12 Screws 2 pcs 13 Retaining ring E 14 Set sc...

Page 120: ...fe connecting plate 5 Shoulder screw 6 1 8 6 Thread trimmer rod 7 Shoulder screw 6 5 3 8 Thread trimmer cam lever 9 Thread trimmer lever 10 Socket bolt S P washer 21 Motor bracket rear assembly 22 Bolts 3 pcs 23 Motor bracket rear cover 24 Screws 2 pcs 25 Thread trimmer link 26 Link shoulder screw 27 Nut 28 Bolts 2 pcs 11 Thread trimmer cam 12 Pulse motor Y assembly 13 Bolts 4 pcs 14 Washers 2 pcs...

Page 121: ...n the TN connecting plate F assembly 11 1 Spring hook plate 2 Plain washers 2 pcs 3 Screws 2 pcs 4 Spring extension 5 Thread nipper U 6 Shoulder screw 6 0 9 7 Thread nipper spacer 8 Thread nipper collar 9 Thread nipper D assembly 10 Thread nipper shoulder screw 11 TN connecting plate F assembly 12 TN connecting plate R 13 Bolts 2 pcs 14 TN driving lever 15 Washer 16 Washer wave spring 17 Link shou...

Page 122: ...mp cam shaft 6 rotates smoothly D on next page B on next page A on next page C on next page A on next page B D on next page 1 Spring hook 2 Bolts 2 pcs 3 Springs 2 pcs 4 Cam gear 5 Thread wiper cam 6 W clamp cam shaft 7 Set screws 4 pcs Tighten 8 Set screw collar 9 Set screws 2 pcs Tighten 10 Plain washers 2 pcs 11 Thread wiper driving lever 12 Drive lever w clamp lifter 13 Lever shaft 14 Retainin...

Page 123: ...nd 9 in the clockwise direction to the screw stop position as viewed from a direction of the arrow Screw stop side Set the first set screw 18 in the clockwise direction to the screw stop position as viewed from a direction of the arrow Set so that the clearance between drive gear 16 16 and the edge of the pulse motor P assembly 17 is 0 5 mm Reference line Align Motor bracket The thread wiper cam a...

Page 124: ...embly 25 430H or 36 438H moves smoothly 23 Button clamp lever holder 24 Bolts 2 pcs 25 Button clamp lever 26 Plain washer 27 Button clamp lever shaft 28 Retaining ring E 29 Set screw Tighten 30 Button clamp rod 31 Roller 32 Button clamp roller shaft 33 Plain washer 34 Nuts 2 pcs 35 Needle bar guide slide block 36 Lifter lever assembly 37 Plain washer 38 Lever shaft 39 Retaining ring E 40 Set screw...

Page 125: ...ws 2 pcs Engage the feed gear 1 and the X feed gear 6 so that the index marks are as close together as possible and then tighten the bolt 7 so that the gears move smoothly in the axial direction with no play Set so that the clearance between the feed gear 1 and the pulse motor X assembly 2 is 0 5 mm Set the first set screw 3 in the clockwise direction to the screw stop position as viewed from a di...

Page 126: ...ued on next page 10 Y feed rack shaft 11 Retaining ring E 12 Feed bar support plate 13 Bolts 2 pcs Temporarily tighten 14 Screws 2 pcs Temporarily tighten 15 Feed bar sub assembly 16 T length regulator block assembly 17 Set screw 18 Feed bar cover 19 Screws 6 pcs 20 Y feed rack shaft clamp 21 Bolt Grease Set screw Remove the set screw and apply grease NIPPON STEEL SUMIKIN CHEMICAL SHINLUBE EJ and ...

Page 127: ...ct position shown in the illustration 1 Provisionally tighten the three socket bolts with washer 25 so that the distance shown in the illustration is approximately 100 mm with the screw stop of the Y motor setting plate 23 is facing the same way as the harness connector Check that the index marks of the feed bar sub assembly 15 and T length regulator block assembly 16 are aligned 2 Move the Y moto...

Page 128: ...ower shaft mechanism Apply grease to the portions 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 Tighten GREASE BZL 302R GREASE BZL 302R 4033B ...

Page 129: ...ves 8 Rock gear 9 Rock gear shaft F assembly 10 Oil seal 11 Rock gear shaft R assembly 12 Set screws 2 pcs Tighten 13 Set screws 2 pcs Tighten Notch facing straight down Take up the play Take up the play 4034B 4035B While pushing the rock gear shaft F assembly 9 and rock gear shaft R assembly 11 so that there is no play in the axial direction tighten the two set screws 12 Gap distribution ...

Page 130: ...ign Align Gap distribution Take up the play Take up the play Temporarily tighten 4037B While pushing the bearing bush assemblies 15 and 16 so that there is no play in the axial direction tighten the six set screws 20 Adjust while referring to 9 15 Adjusting the backlash amount play of the lower shaft gear 14 Oil seal 15 Bearing bush assembly 16 Bearing bush assembly 17 Lower shaft assembly 18 Oil ...

Page 131: ...e to the portions indicated by the white arrows Set screws marked with in the illustration are on the screw stop side Refer to the next page for the points to note during reassembly 4030B 1 Crank lubrication assembly 2 Screws 2 pcs 3 Tube holder 4 Screw A on next page Continued on next page ...

Page 132: ...hers 2 pcs 30 Screws 2 pcs 1 Tighten the screw 10 of the thread take up crank assembly 5 so that it is aligned with the hole in the upper shaft 9 2 While pressing the thread take up crank assembly 5 so that there is no play in it tighten the two set screws 13 Apply adhesive Threebond 1401 or similar to the thread section of the screw 10 15 Joint assembly 16 Set screws 2 pcs 17 Crank rod Lower half...

Page 133: ...064B Felt 4062B Reference line 4072B Install pulley gear R 8 so that it is aligned with the reference line on the upper shaft 9 With the motor assembly 24 provisionally installed check that the pulley turns smoothly by turning the pulley in the direction of the arrow in A and then tighten the four bolts 25 If the pulley does not turn smoothly loosen the screw a in B Next turn the pulley to align t...

Page 134: ... Bed bottom cover 38 Screws 10 pcs 39 O ring 40 Screw 41 Rubber caps 2 pcs 4038B Apply sealant Loctite 207 white or similar to the groove in the bed bottom cover 37 insert the bottom cover packing 36 and then tighten the ten screws 38 in diagonal order to a tightening torque of 2 5 N m Pour in oil while referring to 10 2 Changing lubricating oil When the oil change warning is displayed ...

Page 135: ...nk 12 Set screws 3 pcs Tighten 13 Needle bar connecting rod assembly 14 Screw Tighten 15 Slide block Left hand thread Inside hole Align the set screw 12 with the screw stop Align the set screw 7 with the screw stop Screw stop Horizontal When tightening the two set screws 7 first turn the pulley approximately 10 times to the position where it turns smoothly Fit the beveled side of the slide block i...

Page 136: ...e 18 Screw 19 Air cylinder cap assembly 20 Middle plate 21 Screws 2 pcs 22 Air nozzle assembly 23 Screws 2 pcs 24 Cord holders 2 pcs Inside hole 4032B Cut section With the needle bar 17 near its highest position apply grease inside the holes Adjust so that the needle cooling air reaches the needle while referring to 9 16 Adjusting the needle cooling Continued on next page ...

Page 137: ... reference line on the needle bar 17 or reference line a top reference line is aligned with the lower edge of the needle bar bush when the machine pulley is turned to lower the needle bar 17 to its lowest position and then set the cut section so that it is facing forward and tighten the screw 18 16 Needle bar clamp 17 Needle bar Insert from above 18 Screw 19 Wick holder 20 Screw 21 Rubber cap 22 C...

Page 138: ...2 Oil tank nut 3 Oil tank plate 4 Plain washers 2 pcs 5 Bolts 2 pcs 6 Bolts 2 pcs 4039B After installing the shuttle hook 1 carry out the adjustments in 9 3 Adjusting the needle bar lift amount and the driver needle guard and 9 4 Adjusting the needle clearance 1 Shuttle hook 2 Shuttle race base 3 Shuttle race base setting claw Close 4 Bobbin case assembly 4041B ...

Page 139: ...6 Movable knife collar 7 Thrust collar 8 Movable knife shoulder screw 4338B For the KE 430HX HS 05 specifications and BE 438HX HS parts marked with are supplied as accessories Install them if necessary Seen from the right Seen from below For 5 specifications 0 3mm Except for 5 specifcations 0 1mm 9 Bobbin thread clamp spring 10 Plain washers 2 pcs 11 Spring washers 2 pcs 12 Screws 2 pcs 13 Needle ...

Page 140: ...rt shaft 7 Needle hole 2885B a Sliding portion of the work clamp Apply small amount of grease b Sliding portion of the work clamp arm lever shaft and the work clamp arm levers R and L c Round portion of the work clamp arm lever plate d Slider of work clamp support shaft Push the work clamp arm lever plate 3 in the direction of the arrow to raise the work clamp 4 by about 5 mm set so that there is ...

Page 141: ... is recommended that you use commercially available JXTG Nippon Oil Energy POWERNOC WB 2 1 Feed plate 2 Screws 2 pcs 3 Button clamp holder 4 Button clamp holder shaft 5 Set screws 2 pcs 6 Tension nuts 2 pcs Adjusting nut Compression spring After installing check that the needle passes into the button hole without touching the button Refer to 9 12 Adjusting the position of the button clamp BE 438HX...

Page 142: ...race cover assembly 2 Washers wave spring 2 pcs 3 Shoulder screws 8 2 2 pcs 4 Face plate packing 5 Face plate 6 Screws 3 pcs 7 LED cover 8 Screw 9 Eye guard assembly 10 Bolts 2 pcs 11 Side cover 12 Screws 4 pcs 13 Rear cover 14 Screws 4 pcs 15 Top cover 16 Screws 4 pcs 4046B ...

Page 143: ...h and disconnect the power cord from the wall outlet at the following times otherwise the machine may operate if the foot switch is depressed by mistake which may result in injury When carrying out inspection adjustment and maintenance When replacing consumable parts such as the hook and knives If the power switch needs to be left on when carrying out some adjustment be extremely careful to observ...

Page 144: ...tension output will be maintained When using a 2 pedal foot switch option In the sewing standby condition and during test operation standby the thread tension will output a thread tension value 1 which has been set in the section No 1 sewing start section appearing on the operation panel while the work clamp button clamp is lowered while the work clamp switch is being depressed When the work clamp...

Page 145: ...4 0 6 1 0 0 15 0 35 Thread take up spring height Loosen the set screw 1 and turn the tensioner body to adjust the thread take up spring height Thread take up spring tension Adjust by turning the shaft 2 with a screwdriver NOTE When the spring height stroke is great or the spring tension is insufficient it may cause the thread end length to vary after thread trimming 3897B Lower Higher Weaker Stron...

Page 146: ... bar bush thread guide D 1 is at the middle of the needle bar 2 NOTE If needle bar bush thread guide D 1 is not in the correct position the thread may pull out or skipped stitches may occur 9 2 Adjusting the needle bar height 1 Loosen the two bolts 1 and then remove the eye guard assembly 2 2 Turn the pulley in the direction of the arrow to move the needle bar to the lowest position Then remove th...

Page 147: ... needle 2 Loosen the bolt 2 3 Move the driver 3 back and forth to adjust so that it is touching the needle when the tip of the shuttle hook is aligned with the middle of the needle and then tighten the bolt 2 NOTE If the needle contact pressure from the driver 3 is too great skipped stitches may occur On the other hand if the driver 3 is not touching the needle the tip of the inner shuttle hook wi...

Page 148: ...me of shipment from the factory It should not be changed if at all possible 9 6 Hook lubrication amount KE 430HX HS 05 specifications KE 430HX HS 03 0K 01 specifications BE 438HX HS 1 Tilt back the machine head 2 Loosen the two bolts 1 and then adjust by moving the oil tank assembly 2 up or down KE 430HX HS 05 specifications The standard position is when the centers of the two bolts 1 are aligned ...

Page 149: ...knife pin 3 lowers to its lowest position 5 Loosen the bolt 4 6 Move the thread trimmer link 5 back and forth by turning the thread trimmer cam 2 by hand to adjust so that the ridge line on the movable knife 6 is touching the edge of the index mark 7 and then tighten the bolt 4 while keeping the parts in this position 7 Install the motor bracket rear cover 1 8 Return the machine head to its origin...

Page 150: ...ife 7 cut the thread cleanly 7 Apply grease to the pin 12 of the movable knife and then insert it into the hole in the movable knife connecting plate 13 and then while inserting the pin 15 of TN connecting plate assembly F into the hole in the thread nipper D assembly 14 install the needle plate 5 8 Check that the center of the needle hole and the tip of the needle are aligned Select an accessory ...

Page 151: ...to the top of the work clamp arm lever plate 2 and to the sliding part of the work clamp 4 grease is already applied at the time of shipment and check that the movement becomes easier 9 10 Adjusting the button clamp lift amount BE 438HX HS Adjust so that the actual maximum lift amount for the button clamp is 13 mm above the top of the needle plate when the maximum work clamp height has been set to...

Page 152: ... tight enough that the material will not slip out of place when it is slightly pulled keeping pressure as slight as possible 9 12 Adjusting the position of the button clamp BE 438HX HS 1 Loosen the two bolts 1 and adjust the button clamp base 2 by moving it 2 Carry out test feeding to check that the needle will go through the button hole with no contact 3905B 3904B ...

Page 153: ... when the thread wiper 1 is aligned with the center of the needle at the needle bar stop position NOTE Check that the needle bar thread guide 3 and the thread wiper base shaft 4 are not touching at this time Thread wiper racking width adjustment 1 Remove the side cover 2 Loosen the set screw 1 and adjust so that the distance from the thread wiper to the center of the needle is as shown in the illu...

Page 154: ...ate the thread tension so that distance a is 1 9 0 1 mm Figure B Select a spacer that can maintain the distance a without becoming bent when the tension solenoid 4 operates Refer to 9 1 1 Upper and lower thread tension for details on operating the thread tension 5 Loosen the bolt 9 and adjust the sideways position of the set collar 10 so that the opening amount b for the tension discs is 0 mm Afte...

Page 155: ...t screws 4 and the two set screws 5 12 Use the tip of a screwdriver or similar to adjust the front and back rock gear collars 6 so that the backlash amount play is 0 05 to 0 2 mm Alternately move the phase of the front and back rock gear collars 6 slightly to adjust so that the phase of the front and back rock gear collars 6 is about the same within 10 degrees If the backlash amount play is small ...

Page 156: ...tep The feed mechanism will move to the home position 3 While sewing any program depress the foot switch to the 2nd step to complete one cycle of operation 4 Turn off the power switch 5 Check that the center of the needle is aligned with the extension line from the air nozzle 1 at the needle bar stop position Check that the extension line passes through the threading hole of the needle at this tim...

Page 157: ...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 adjust the installation position of the machine head switch as shown in the illustration 3879B ...

Page 158: ...tting 1 position is within the range continue by adjusting the setting 2 position If the setting value is outside the range adjust the main shaft again so that the machine pulley is at the setting 1 position 4 Remove the block 1 and then turn the pulley until the needle bar passes its highest position and starts to drop Clamp the block 1 between the needle bar bush D 2 and the needle bar thread gu...

Page 159: ...he display will switch to the home position adjustment screen 3 After switching to the home position adjustment screen touch the X motor setting value 1 or the Y motor setting value 2 to select it When a setting value is touched it is highlighted in black and the value can then be changed 4 Touch the check key 3 Home position detection will be carried out based on the currently displayed offset va...

Page 160: ...ionally confirm the offset value Home position detection for the feed motor will be carried out based on the currently displayed offset value Check the home position 7 Repeat steps 5 and 6 to set the home position to the correct position 8 Completion of setting Touch the OK key to confirm the offset value The changed offset value will stop flashing and will be illuminated on the screen If the offs...

Page 161: ...n and the display will switch to the home position adjustment screen 3 After switching to the home position adjustment screen touch the Work clamp motor setting value 1 to select it When a setting value is touched it is highlighted in black and the value can then be changed 4 Touch the check key 2 Home position detection for the work clamp motor will be carried out based on the currently displayed...

Page 162: ...or will be carried out based on the currently displayed offset value Check the home position 7 Repeat steps 5 and 6 to set the home position to the correct position 8 Completion of setting Touch the OK key to confirm the offset value The changed offset value will stop flashing and will be illuminated on the screen If the offset value has not been provisionally confirmed if the check key was not to...

Page 163: ...r adjustment is selected in the adjustment menu screen the display will switch to the nipper adjustment screen 4 After switching to the nipper adjustment screen touch the Standby position setting value 1 or the Nipping position setting value 2 to select it When a setting value is touched it is highlighted in black and the value can then be changed 5 Touch the check key 3 Home position detection wi...

Page 164: ...nd then press the key or the key 7 to change the offset value The thread trimmer motor will operate in accordance with the offset value The offset value will flash after it has been changed 7 Completion of setting Touch the OK key to confirm the offset value When the setting has been completed press the back key The display will return to the adjustment menu screen 8 Turn off the power switch inst...

Page 165: ...h depressed all the way forward wait until the voltage display value stabilizes and then press the OK key 4 Memorizing the neutral position With your foot released from the foot switch wait until the voltage display value stabilizes and then press the OK key 5 Memorizing the maximum backward position With the foot switch depressed all the way backward wait until the voltage display value stabilize...

Page 166: ...zation check screen will be displayed Touch the OK key to start the initialization When the screen display returns to the initialization screen initialization is complete If the or key is touched at this time you can select the items to be initialized as shown below For details on initialization items other than All clear refer to the Service Manual Items displayed on the screen Initialization ite...

Page 167: ...n the other hand if the coordinates which are read are outside the allowable range the buzzer will sound twice so repeat the operation 3 Press the center of the mark 2 in the bottom left corner 4 If the coordinates which are read are within the allowable range the next screen is displayed On the other hand if the coordinates which are read are outside the allowable range the buzzer will sound twic...

Page 168: ... the buzzer will sound twice so repeat the operation 5 Press the center of the mark 7 at the center bottom 6 If the error is within the allowable range 5 to 5 the next screen is displayed On the other hand if the error is outside the allowable range the buzzer will sound twice so repeat the operation 7 Press the center of the mark 8 at the center right 8 If the errors are within the allowable rang...

Page 169: ...ayed and the buzzer beeps once 2 Touch Digital tension output adjustment in the adjustment menu screen to switch to the adjustment screen This function can only be used with the KE 430HX and BE 438HX The procedure for correcting the tension output from the digital tension involves carrying out the procedure of measuring the actual upper thread tension and entering the four measured values using th...

Page 170: ...elected value will be set as the correction value The setting value will stop flashing and will illuminate NOTE If you need to set the range to a value which is higher than the value in the Allowable setting range column of the table problems with operation of the digital tension may occur Carry out the steps in 9 14 Adjusting the tension release amount KE 430HX BE 438HX and then repeat the proced...

Page 171: ... reach of children Secure the table so that it will not move when tilting back the machine head If the table moves it may crush your feet or cause other injuries Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught 10 1 Applying grease Wo...

Page 172: ...epress the foot switch to resume sewing NOTE The oil change warning will continue to be displayed each time the power is turned on until the oil is changed and the notification is reset by carrying out the procedure on page 164 If you continue to use the sewing machine after the oil change warning appears without changing the oil or without carrying out the reset procedure E100 will appear after a...

Page 173: ...the screw 2 When the screw is removed the oil will gush out Make sure the oil pan is facing the correct way NOTE Be careful not to get any lubricating oil on the X feed motor 3 Otherwise it may cause problems with the operation of the pulse motor Do not deliberately tilt the sewing machine in order to fully drain the oil Injury may result 5 Install the screw 2 Clean around the installation area be...

Page 174: ...o reference lines in the oil gauge window If the oil level is below the lower reference line operating problems such as motor seizure may result Do not allow the oil level to go past the top reference line Oil leaks may occur during sewing machine operation 8 Install the screw 5 Clean around the installation area before installing When installing the screw 5 check that the O ring 6 is fitted onto ...

Page 175: ... screen will be displayed Press the key to display Maintenance information and then touch Maintenance information 2 Press the key 1 to switch to clear oil counter mode When the reset key 2 is pressed the oil counter will become zero and it will blink When the OK key is touched the oil counter value will illuminate and the oil counter will be cleared This completes the clearing operation 3 Press th...

Page 176: ...ct operation will also occur 1 Insert the connector 1 of the 2 pedal foot switch into connector P10 on the main PCB 2 Temporarily remove the two screws 2 from the ground terminal of the control box and then connect the two ground wires 3 in the 2 pedal foot switch harness to the ground terminal and retighten the screws to the ground terminal 3 Close the cord presser plate 4 in the direction of the...

Page 177: ...rd is properly connected E016 Problem with the stop switch connection when the power was turned on Turn off the power and then check that connector P15 on the main P C board is properly connected E020 The start switch was pressed without lowering the work clamp Release the start switch to clear the error E025 The start switch 2nd foot switch is being pressed or there is a problem with the connecti...

Page 178: ...annot be detected Problem with X feed motor or poor X encoder connection Turn off the power and then check that connector P2 on the main P C board is properly connected E201 X feed motor stopped abnormally Turn off the power and check that there is no problem with the X feed direction E204 X feed motor stopped abnormally during sewing Turn off the power and check that there is no problem with the ...

Page 179: ... the USB memory E422 Error occurred while reading from USB memory Press the reset key to clear the error Check the data in the USB memory E424 Insufficient space in USB memory Press the reset key to clear the error Use different USB memory E425 Error occurred while reading from USB memory Press the reset key to clear the error Use the specified type of USB memory Check if the USB memory is write p...

Page 180: ...582 Memory switch versions do not match Read data for the same version E583 Parameter versions do not match Read data for the same version Device related errors Code Cause and remedy E600 Upper thread breakage has occurred Thread the upper thread and then press the reset key to clear the error Re sewing is then possible E690 Thread trimmer pulse motor home position cannot be detected Problem with ...

Page 181: ...the correct file into the USB memory E885 Communication error within the USB memory occurred during main version updating Turn off the power and then check the connection of the USB memory E886 Fault is found in the version up file during main version updating Turn off the power and then repeat the version update procedure E887 Failed to save the version up file during main version updating Turn o...

Page 182: ...ck Remedy Page Threading Upper thread threading Thread the upper thread correctly Instruction manual Lower thread threading Thread the lower thread correctly Instruction manual Thread path Flaw or abrasion on the thread path Polish with buff or replace the part Especially pay attention to finishing around needle plate hole Upper thread amount Arm thread guide C position Adjust the arm thread guide...

Page 183: ...ted around hook Remove any twisted thread from the inner and shuttle hook Flaw on the tip of the shuttle hook and shuttle hook edge Polish with buff or replace the part Use the KE 430H BE 438H bobbin case Lower thread Lower thread tension Adjust the lower thread tension appropriately 132 Instruction manual Bobbin case Damage outside of bobbin case and bent bobbin holder spring etc Buff it to corre...

Page 184: ...t the driver so that the needle contact pressure is not too great 136 Gap between needle and the tip of the shuttle hook Adjust the gap between the needle and the tip of the shuttle hook to 0 01 0 08 mm Adjust to as large as possible without causing skipped stitches to occur Move the needle bar back and forth with your finger and check that the tip of the shuttle hook does not strike the needle 13...

Page 185: ...crease upper thread tension to such a degree that it does not influence stitch quality Instruction manual Upper thread trailing length is long or uneven Turn the sub tension nut to adjust the tension When using the thread nipper device adjust the upper thread trailing length to 35 40 mm Instruction manual Tension at the beginning of sewing Change the value of memory switch No 551 to change the upp...

Page 186: ...le race base rim Hook edge Around needle plate hole Remove thread chips or dust Upper thread Upper thread tension Increase upper thread tension while checking stitches Instruction manual Needle and thread Replace needle that fits the thread 132 Needle Installing a needle Insert the end of the needle shank so that it touches the top edge of the needle hole of the needle bar Needle count Replace nee...

Page 187: ...e up spring tension Heighten take up spring tension 134 Hook Needle bar height and needle bar lift amount Adjust the needle bar height Adjust the needle and hook timing 135 Shuttle race base rim Hook edge Around needle plate hole Remove thread chips or dust Lower thread Lower thread tension is low Heighten lower thread tension Instruction manual Bobbin thread clamp spring Install the bobbin thread...

Page 188: ...thread guide position 137 Lower thread Lower thread tension is low Adjust to heighten the lower thread tension 132 Instruction manual Movable knife Cutting quality of movable knife Remove the needle plate thread the needle hole plate and then move the movable knife 1 as shown in the illustration and check that it trims the thread cleanly If it does not trim the thread cleanly Adjust the position o...

Page 189: ...oes not trim the thread cleanly Adjust the position of the fixed knife Refer to the next section Sharpen the fixed knife Replace the fixed knife assembly Use the KE 430H BE 438H fixed knife assembly 139 Installation position of the fixed knife Check that the fixed knife is installed in the position shown in the illustration 128 Skipped stitches Skipped stitches at the final stitch Refer to 13 2 Sk...

Page 190: ...late Installation position of the needle plate Adjust the position of the needle plate back and forth so that the needle is aligned with the center of the needle hole Thread wiper Thread wiper height Adjust the height of the thread wiper so that the work clamp does not press the thread Adjust so that the needle and thread wiper do not interfere with each other 142 Entanglement of upper thread with...

Page 191: ...e work clamp pulse motor 150 Button clamp height is unsuitable BE 438HX HS 13 15 Items with a in the Page column should only be handled by a qualified technician Cause Check Remedy Page Button clamp holder hook Button clamp holder hook position Adjust the button clamp lift amount 140 Thread wiper Contact between thread wiper and work clamp Check that the thread wiper does not touch the work clamp ...

Page 192: ...ntact of main P C board connector Check if there are any problems with the connection and contact of the power supply motor P C board connector and the operation panel P C board connector Sewing machine does not operate when the power is turned on 13 19 Items with a in the Page column should only be handled by a qualified technician Cause Check Remedy Page Machine head switch Machine head switch h...

Page 193: ...ter the power is turned off before doing the following Opening and closing the control box Replacing fuses Separating and joining connectors Measuring resistance Doing anything with a possibility of touching something inside the control box Some adjustments require measuring the voltage while the power is turned on with the control box kept open In such a case be careful not to touch any place oth...

Page 194: ...tor There are two fuses on this PCB Conversion transformer box 100V 110V 380V 400V AC specifications only Steps down the power supply voltage and generates the voltages that are required for the control box NF box For Europe Eliminates electrical noise that is transmitted along the power supply line Panel PCB Secured inside the operation panel This PCB controls indications of the machine status an...

Page 195: ...he specified ones listed below If a component on a PCB is damaged the fuses may blow again soon even after they have been replaced No Part name Part code When a fuse has blown F2 F3 GLASS FUSE 10A 50T100H SB3275 001 The power supply LED is not illuminated and nothing operates Power supply motor PCB QR code 4082B Serial No ...

Page 196: ...ctor problems including improper connection or sufficient contact Therefore be sure to check if each connector is correctly inserted and that there is no contact failure between pins and wires before starting troubleshooting procedures 14 4 1 Connector positions Main PCB 4083B Transparent X Red Y Black P QR code Serial No ...

Page 197: ...14 ELECTRIC MECHANISM 186 KE 430HX KE 430HS BE 438HX BE 438HS Panel main PCB Panel key PCB 4293B 4084B USB connector QR code Serial No QR code Serial No ...

Page 198: ...ith work clamp button clamp operation in the forward back Y direction Error E210 E211 E214 E215 or E216 is displayed Problem with work clamp button clamp operation in the sideways X direction Error E200 E201 E204 E205 or E206 is displayed The feed motor does not operate for home position detection immediately after the power is turned on Error E200 or E210 is displayed Work clamp mechanism Problem...

Page 199: ... There is no error display Thread trimmer mechanism Problem Connector No and position Error E690 or E692 is displayed Sewing operation Problem Connector No and position The power supply LED is not illuminated and nothing operates Machine operation is unstable The main shaft motor does not operate correctly Error E130 is displayed 4303B 4305B 4306B 4304B ...

Page 200: ... panel key does not have any effect The operation panel is completely dark The sewing machine does not operate when the foot switch is depressed No error display Error E055 is displayed after the power is turned on Error E452 is displayed after the power is turned on The machine does not start up with the brother display appearing Continued on next page 4307B 4308B 4309B 4310B 4307B ...

Page 201: ...MECHANISM 190 KE 430HX KE 430HS BE 438HX BE 438HS Problem Connector No and position The sewing machine does not operate when the foot switch is depressed Error E130 is displayed Error E131 is displayed 4306B 4311B ...

Page 202: ...lowchart 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 14 5 2 Problem solution and measures Turning off of the power switch 2707B 4312B ...

Page 203: ...14 ELECTRIC MECHANISM 192 KE 430HX KE 430HS BE 438HX BE 438HS 4313B ...

Page 204: ...14 ELECTRIC MECHANISM 193 KE 430HX KE 430HS BE 438HX BE 438HS 4314B ...

Page 205: ...14 ELECTRIC MECHANISM 194 KE 430HX KE 430HS BE 438HX BE 438HS 4315B ...

Page 206: ...14 ELECTRIC MECHANISM 195 KE 430HX KE 430HS BE 438HX BE 438HS 4316B ...

Page 207: ...stance Doing anything with a possibility of touching something inside the control box Injury When separating or rejoining connectors and measuring something be careful not to cut your fingers on metal parts such as heat sinks and covers 2 When replacing a fuse be sure to use a new one of the same quality and capacity as the old one Before adjustment 1 While the power is turned off check each conne...

Page 208: ...tion check that the power supply voltage at the wall outlet is within the range of the specification voltage 10 After inspecting turn off the power switch and connect the power supply connector 3 Blown fuse Check 300V Remove fuses F2 and F3 from the power supply motor PCB and check the continuity OK if there is continuity GLASSFUSE 10A 50T100H 10A 250V 4 Malfunction of power supply motor PCB 1 Dis...

Page 209: ...5 PANEL of the main PCB is inserted Operation panel assembly 8 Malfunction of LED assembly Disconnect connector P1 LED from the main PCB and then turn on the power switch and check LD8 green on the power supply motor PCB OK if illuminated LED assembly Error status 2 Illumination LED does not light Probable causes Check repair adjust Parts to be replaced 1 Malfunction of main PCB Disconnect connect...

Page 210: ...k that CN2 is inserted into the panel main PCB Operation panel assembly 4 If E131 is displayed there is a poor connection of the synchronizer Check that connector P5 ENC MT is connected to the power supply motor PCB and that connector P23 MOTOR is connected to the main PCB 5 If E400 or E401 is displayed there is a connection fault between the main PCB and the power supply motor PCB or between the ...

Page 211: ...ir adjust Parts to be replaced 1 Incorrect depression position adjustment Adjust the position while referring to 9 22 Setting method for standard depression strokes Foot switch 2 Malfunction of treadle unit With the main PCB connector P8 PEDAL connected turn on the power and measure the voltage between terminals 2 3 of the cord connector No 2 No 3 OK if the voltage is approximately 1 6 2 6 V at ne...

Page 212: ...s displayed there is a blown fuse a Remove fuses F2 and F3 from the power supply motor PCB and check the continuity OK if there is continuity b If fuse F2 or F3 is blown check the resistance values between each terminal of the relay connector between the machine motor and the power supply motor PCB and between each terminal of the fuses OK if ohms c If the fuses blow again after they are replaced ...

Page 213: ...f the connector OK if ohms c Insert P22 and the translucent relay connector for connecting the pulse motor connection to the main PCB turn on the power switch and then check LD1 red on the power supply motor PCB OK if illuminated If LD1 is illuminated during the check in step 1 in 7 but it does not illuminate when the translucent relay connector for connecting the pulse motor and P22 are connected...

Page 214: ...ck the continuity between terminals 2 3 and 5 6 of the connector OK if ohms c Insert P22 and the red relay connector for connecting the pulse motor to the main PCB turn on the power switch and then check LD1 red on the power supply motor PCB OK if illuminated If LD1 is illuminated during the check in step 1 in 8 but it does not illuminate when P22 is connected there is a malfunction of the main PC...

Page 215: ...2 3 and 5 6 of the connector OK if ohms c Insert P22 and the black relay connector for connecting the pulse motor connection to the main PCB turn on the power switch and then check LD1 red on the power supply motor PCB OK if illuminated If LD1 is illuminated during the check in step 1 in 9 but it does not illuminate when the black relay connector for connecting the pulse motor and P22 are connecte...

Page 216: ... green on the power supply motor PCB OK if illuminated After checking turn off the power switch wait for five minutes or more and then insert connector P4 MN MT into the power supply motor PCB Power supply motor PCB assembly 4 If the thread trimmer pulse motor does not move and E690 is displayed there is a malfunction of the main PCB a Disconnect connector P23 MOTOR from the main PCB and check the...

Page 217: ... work clamp motor home position b Check if the work clamp button clamp is touching anything 2 Incorrect mechanism adjustment Check if the work clamp arm moves smoothly Work clamp arm assembly Error status 12 Work clamp does not lower Probable causes Check repair adjust Parts to be replaced 1 Incorrect work clamp home position adjustment a Adjust the home position while referring to 9 20 Adjusting ...

Page 218: ...cannot be performed during test feeding Probable causes Check repair adjust Parts to be replaced Malfunction of foot switch and cord See 5 Error status 16 The machine does not operate correctly for the set program during test feeding Probable causes Check repair adjust Parts to be replaced Malfunction of foot switch and cord See 5 Error status 17 The machine does not operate during sewing and the ...

Page 219: ...s strong electrical interference 4 If E111 E130 E131 E132 or E133 is displayed after the sewing machine operates there is a malfunction of the power supply motor PCB Refer to steps 1 to 4 in 6 Power supply motor PCB assembly 5 If E111 E130 E132 or E133 is displayed after the sewing machine operates there is a malfunction of the power supply motor PCB or of the machine motor If an error occurs afte...

Page 220: ...causes Check repair adjust Parts to be replaced 1 Incorrect memory switch setting Set memory switch No 164 to OFF If it is set to ON thread trimming will not be carried out 2 Incorrect mechanism adjustment Adjust the thread trimmer mechanism while referring to 9 21 Adjusting the thread nipper motor position If it seems that the thread trimming mechanism is not operating properly carry out steps 3 ...

Page 221: ...atus 21 The tension release does not operate Probable causes Check repair adjust Parts to be replaced 1 Malfunction of main PCB a With connector P19 SOL2 disconnected from the main PCB check the continuity between terminals 1 2 of connector P19 on the main PCB OK if ohms b With main PCB connector P19 SOL2 connected turn on the power and carry out sewing and measure the voltage between terminals 1 ...

Page 222: ...t carry out steps 1 to 5 in 18 Avoid repeated sewing of sewing data that contains 15 stitches or less Power supply motor PCB assembly Motor 430 assembly Error status 24 USB memory read write mode cannot be activated Probable causes Check repair adjust Parts to be replaced 1 If E420 is displayed the USB memory is incorrectly inserted a Check the direction of insertion of the USB memory b Check the ...

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Brother BE-438HS, Service Manual

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