Brother BAS-311H Service Manual Download Page 90

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7. ASSEMBLY

BAS-311H

7-12. Tension release mechanism

Adjust while referring to “8-20. Adjusting
the tension release amount”.

Adjust the thread take-up spring height
while referring to “8-2. Standard thread
tension”.

1. Tension release bar
2. Retaining

ring

3. Plain

washer

4. Spring
5. Tension release solenoid
6. Solenoid setting plate
7. Solenoid

cushion

8. Plain

washer

9. Nut
10. Bolt
11.  Plain washers [2 pcs.]
12.  Spring washers [2 pcs.]
13.  Bolts [2 pcs.]
14.  Screws [2 pcs.]
15. Solenoid cover
16.  Screws [2 pcs.]
17.  Tension release pin
18.  Tension bracket assembly
19. Set screw

3326B

Summary of Contents for BAS-311H

Page 1: ...BAS 311H Please read this manual before making any adjustments DIRECT DRIVE PROGRAMMABLE ELECTRONIC PATTERN SEWER SERVICE MANUAL ...

Page 2: ...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: ...WARNING The instructions which follow this term indicate situations where failure to follow the instructions could result in death or serious injury CAUTION This 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 ...

Page 4: ...ely dry or humid environments and dew formation may cause problems with correct operation In the event of an electrical storm turn off the power and disconnect the power cord from the wall outlet Lightning may cause problems with correct operation Installation Machine installation should only be carried out by a qualified technician Contact your Brother dealer or a qualified electrician for any el...

Page 5: ...to your eyes or onto your skin inflammation can result Furthermore do not drink or eat the lubricating oil or grease They may cause diarrhea or vomiting Keep the oil out of the reach of children Maintenance and inspection Maintenance and inspection of the sewing machine should only be carried out by a qualified technician Ask your Brother dealer or a qualified electrician to carry out any maintena...

Page 6: ...d and returning it to its original position Be sure to connect the ground If the ground connection is not secure you run a high risk of receiving a serious electric shock and problems with correct operation may also occur Direction of operation Be careful to avoid injury from moving parts Do not hold otherwise problems with operation or injury may occur 安全保護装置 Safety devices Devices such as eye gu...

Page 7: ...v 3228B 3029B Rear cover Tension release solenoid cover Inner cover L Outer cover Fixed cover Side cover Thread take up cover Eye guard Finger guard Gas spring support cover Inner cover R Outer cover Fixed cover ...

Page 8: ...g machine data to an SD card 46 5 12 w 9 Writing error log data and memory switch log data to an SD card 47 5 13 Updating the control program version 48 6 MECHANICAL DESCRIPTIONS 49 6 1 Needle bar and thread take up mechanisms 49 6 2 Lower shaft and shuttle race mechanisms 49 6 3 Work clamp lifter mechanism Motor driven work clamp specifications 50 6 4 Work clamp lifter mechanism Pneumatic work cl...

Page 9: ...e air pressure pneumatic work clamp specifications 98 8 19 Belt tension adjustment 99 8 20 Adjusting the tension release amount 100 8 21 Adjusting the backlash of the lower shaft gear 101 8 22 Adjusting the home position 102 8 22 1 Work clamp lift home position 102 8 22 2 X Y feed home position 105 8 23 Adjusting the motor standard position 108 8 24 Adjusting the needle up stop position 109 8 25 S...

Page 10: ...amp Work clamp height Motor driven work clamp specifications Max 25 mm Pneumatic work clamp specifications Max 30 mm Intermittent presser foot lift amount 22 mm Intermittent stroke 2 4 5 mm 4 5 10 mm or 0 Default setting 3 mm Hook Double capacity shuttle hook standard shuttle hook sold separately Wiper device Standard equipment Thread trimmer Standard equipment Data storage method Internal memory ...

Page 11: ... arm by two people as shown in the illustration When holding the machine head do not hold it by the motor otherwise it may damage the motor Do not hold the shaded parts as they can bend easily 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 supp...

Page 12: ...oftware version 2 Memory switch setting mode Advanced 2596B Refer to 3 3 Setting memory switches Advanced 6 Error log display function 2600B Refer to 3 6 Error history checking method 3 Input check function 2597B Refer to 3 7 Input checking method 7 Home position adjusting mode 2601B Refer to 8 22 Adjusting the home position 4 Output check function 2598B Refer to 3 8 Output checking method 8 Tread...

Page 13: ... to 8 23 Adjusting the motor standard position 11 Protect setting mode 2605B Refer to 3 10 Protection settings 10 Needle up stop position adjustment mode 3194B Refer to 8 24 Adjusting the needle up stop position 12 Version update 2606B Refer to 5 13 Updating the control program version ...

Page 14: ...ting mode 2612B Refer to the CD Instruction Manual 2 Lower thread counter setting mode 2609B Refer to the CD Instruction Manual 6 Parallel movement mode 2614B Refer to 4 X and Y parallel movement of sewing patterns 3 Production counter setting mode 2610B Refer to the CD Instruction Manual 7 SD data read write mode 2615B Refer to 5 3 Preparation for reading and writing data 4 Program mode 2611B Ref...

Page 15: ... that have been changed from default settings will appear in order 2423B 3 Change the memory switch setting Press the or key to change the setting value The flashing display means that the setting has not yet been applied You can make the initial setting appear in the display by pressing the RESET key 3197B 4 Apply the changed setting 2414B Press the ENTER key The menu display will change from fla...

Page 16: ...step 003 0 2 2 2 step work clamp Work clamp is lowered to intermediate height when pedal is depressed to the 1st step and work clamp is fully lowered and sewing starts when the pedal is depressed to the 2nd step 2 Solenoid Slow start method OFF The sewing speed for the first 5 stitches will be in accordance with the setting for memory switch Nos 151 to 155 OFF 100 ON OFF ON The sewing speed for th...

Page 17: ... direct selection keys for sewing program numbers 101 to 104 1 F keys become direct selection keys for cycle program numbers C01 to C04 Selection is possible when memory switch No 400 is set to ON 406 2 0 2 2 F keys become shortcut keys for program numbers which have been assigned to the keys F1 Setting number for memory switch No 407 F2 Setting number for memory switch No 408 F3 Setting number fo...

Page 18: ...turned off 055 0 2 2 Reverse valve output for pneumatic specifications is output simultaneously for 2 position valve specifications Right work clamp reverse Option output No 4 Left work clamp reverse Option output No 5 0 Pneumatic Thread winding operation before home position is detected OFF Thread winding cannot be carried out before home position is detected 056 ON OFF ON Thread winding can be c...

Page 19: ...clamp lifts automatically and drops when the work clamp switch is depressed The left and right order can be changed using memory switch No 002 None 2 No automatic work clamp lifting Work clamp lifts while work clamp switch is being depressed None 3 Left right work clamp intermittent presser foot 2 step work clamp When work clamp switch is depressed to the 1st step both the left and right work clam...

Page 20: ...t pedal is depressed 2nd step when right center pedal is depressed invalid for single step work clamp The start switch right starts the sewing machine None 2 Independent home detection The right pedal center is used exclusively for detecting the home position The left pedal raises and lowers the left and right work clamps and the start pedal right starts the sewing machine The start switch right s...

Page 21: ... 100 2800 None Sewing speed for 5th stitch before the sewing end 156 200 2800 Units sti min Increments of 100 2800 None Sewing speed for 4th stitch before the sewing end 157 200 2800 Units sti min Increments of 100 2800 None Sewing speed for 3rd stitch before the sewing end 158 200 2800 Units sti min Increments of 100 2800 None Sewing speed for 2nd stitch before the sewing end 159 200 2000 Units s...

Page 22: ...n only be set when memory switch No 167 is set to ON not displayed at other times If it is set to 0 no timer operation 168 0 120 Units s Increments of 1 0 None Servo lock release rotation angle Can only be set when memory switch No 167 is set to ON not displayed at other times 169 30 89 Units degree Increments of 1 45 None Lowers the allowable speed for the sewing pitch by the amount set 170 0 280...

Page 23: ... position When work clamp is raised after moving to sewing start position Ignored 253 0 2 2 2 When the expansion input switch EXIN3 is pressed while the program number is flashing When work clamp is lowered before moving to sewing start position Moves to sewing start position When work clamp is lowered after moving to sewing start position Ignored When work clamp is raised before moving to sewing ...

Page 24: ...ges the overall feed timing reference 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 needle zigzagging is even 2 Feed end reference Makes the timing uniform at the end of feed 268 0 3 3 Linked to speed Feed timing is uniform even if the sewing speed changes 1 None Changes the feed timing reference for t...

Page 25: ...lower thread counter OFF Counted at the end of sewing 353 ON OFF ON Counted at the start of sewing OFF None Switching program numbers using an external switch 0 Disable 354 0 9 1 9 Program number is switched by means of the 5 bits of option input EXIN6 EXIN10 Applicable numbers are Setting number 3rd digit last two digits can be 1 31 0 None Switches split numbers using an external switch OFF Disab...

Page 26: ...ing area 6 Front left corner of sewing area 7 Back right corner of sewing area 462 0 8 8 Front right corner of sewing area 0 None The parallel movement amount is stored even when the power is turned off 1 Movement amount is Initialized when program number or enlargement reduction ratio is changed and when power is turned off 2 Movement amount is Initialized when program number or enlargement reduc...

Page 27: ...alization 0 Disable 1 Inner clamping device is used Retract operation is carried out at the sewing end to prevent interference with the needle 2 Inner clamping device is used No retract operation at the sewing end 556 0 3 3 Inner clamping device operates for 1 4 of the sewing pattern and returns for the other 3 4 No retract operation 0 None Wiper device 0 Disable 1 Standard wiper device is used 55...

Page 28: ...2 2 Tension release force is set to the maximum Tension release is closed at the sewing end When using threading mode it will be closed in approximately 1 minute 0 3 5 1 7 None Upper thread tension during test feed OFF Upper thread tension not applied 567 ON OFF ON Upper thread tension applied OFF None Detection timing for lower thread sensor Not reset during initialization 569 0 3 0 Sensor not us...

Page 29: ...sewing is interrupted by the STOP key Thread trimming cannot be set when memory switch No 652 is set to 0 0 None Thread trimming operation prevention when sewing is paused OFF Thread trimming is carried out when the pause is canceled 652 ON OFF ON Thread trimming is not carried out when the pause is canceled OFF None Resuming sewing after sewing is paused OFF STOP switch RESET key key Sewing start...

Page 30: ...to OFF 2 Continuous operation two work clamp up down operations per cycle occurs while the start switch remains on Not raised and lowered when memory switch No 001 is set to OFF 750 0 3 3 Continuous operation three work clamp up down operations per cycle occurs while the start switch remains on Not raised and lowered when memory switch No 001 is set to OFF 0 None Run in operation stop time 751 0 3...

Page 31: ...3 3 Medium weight material specifications 5 5 Heavy weight material specifications 850 3 5 7 7 7 Seatbelt specifications None Unique settings for each model No Setting range Settings Setting details Initial value Specification limits Program number output OFF Disable 951 ON OFF ON When the last two digits of the program number are 1 to 15 the program number is output in 4 bits to option output 4 7...

Page 32: ...ift 1 1 ON 2 Automatic lift Lowered 1 1 ON 0 Automatic lift 1 1 OFF 2 Enabled Lowered Lowered 1 1 OFF 0 Work clamp dropping in 1 step Disabled Lowered Lowered 1 2 Automatic lift 2 1 ON 2 Automatic lift Lowered 2 1 ON 0 Automatic lift 2 1 OFF 2 Enabled Lowered Lowered 2 1 OFF 0 Work clamp dropping in 2 steps Disabled Lowered Lowered 2 2 Motor driven work clamp specifications Foot switch sequence op...

Page 33: ...ing is simultaneous Lowered Lowered 3 OFF 0 Automatic lift 4 ON 2 Automatic lift Lowered 4 ON 0 Automatic lift 4 OFF 2 Work clamp drop sequence at work clamp switch 1st and 2nd step alternates each time an article is sewn Initially right left Lowered Lowered 4 OFF 0 Pneumatic work clamp specifications two pedal foot switch sequence operations Operating mode Memory switch setting Work clamp operati...

Page 34: ...et do not remain in the error history and so they will not be displayed 2 Press the or key 4 to change the order of the error history number The history stores 99 entries 01 to 99 in order starting from the most recent No 01 is the most recent entry If there are no error codes E will be displayed The production counter when the error occurred will appear in the PROGRAM No display 2 and the menu di...

Page 35: ...ed item number 3 Refer to the input check list to check the key and sensor responses 4 When returning to normal operation turn power off and then on again Input check list Item No Item name Input status Check items and checking methods 1 orX on oFF X feed motor home position sensor position Move the work clamp manually in the X direction Right ON Left OFF 2 EnX 999 999 X feed motor encoder counter...

Page 36: ...y name will be displayed while a key is pressed On display Key name rESt RESET key tESt TEST key tHrE THREAD CLAMP key tEn TENSION key SELE SELECT key UP M key dn M key UP S SECTION key dn S SECTION key UP t TENSION key dn t TENSION key F1 Function key F1 F2 Function key F2 F3 Function key F3 F4 Function key F4 Ent ENTER key 11 FtA 0 255 Foot switch analog value Depress the foot switch When depres...

Page 37: ...nput error detection Option input IN13 19 Not used 20 Not used 21 Fib on oFF Fiber type thread breakage detection Option input IN14 22 in1 on oFF Option input IN1 23 in2 on oFF Option input IN2 24 in3 on oFF Option input IN3 25 in4 on oFF Option input IN4 26 in5 on oFF Option input IN5 27 in6 on oFF Option input IN6 28 in7 on oFF Option input IN7 29 in8 on oFF Option input IN8 30 in9 on oFF Option...

Page 38: ... 4 For item numbers 55 onward depress the foot switch to the 2nd step For a two pedal foot switch depress the start switch The operation for that check item will be carried out while the foot switch is being depressed 5 When returning to normal operation turn power off and then on again Item No Item name Operation 51 PM X When the key is pressed the work clamp moves to the left When the key is pre...

Page 39: ...tal tension the solenoid turns on at the tension that has been set 63 WiP The wiper solenoid is turned ON 64 oP 1 Option output 1 turns ON 65 oP 2 Option output 2 turns ON 66 oP 3 Option output 3 turns ON 67 oP 4 Option output 4 turns ON 68 oP 5 Option output 5 turns ON 69 oP 6 Option output 6 turns ON 70 oP 7 Option output 7 turns ON 71 oP 8 Option output 8 turns ON 72 oP 9 Option output 9 turns ...

Page 40: ...No display 4 will change as follows each time the or key 3 is pressed PROGRAM No display 4 Software Menu display 2 example 1 Mn Main control program 1 0 00 2 Mt Motor control program 1 00 3 PL Panel control program 1 00 4 in Main IPL 1 00 5 it Motor IPL 1 00 6 iL Panel IPL 1 00 3 Press the TEST key 5 to return to the normal display The sewing machine will switch to home position detection standby ...

Page 41: ...rations are disallowed depending on the protection level Protected items have been preset for each level Refer to Table of protection levels and corresponding protected items on page 33 7 You can change the protection setting for each of the 22 items individually Set to ON disallowed or OFF allowed for each item All items are set to OFF at the time of shipment from the factory 3 Press the ENTER ke...

Page 42: ...and the TEST key 2 and the ENTER key 3 turn on the power switch The previous starting method A or b will be displayed in the menu display The method is set to A at the time of shipment from the factory 3203B 2 Press the or key 5 to select the next starting method Starting method Details A Protect setting mode can be started using either Method A or Method B B Protect setting mode can only be start...

Page 43: ...if 100 or less XY enlarge reduce change during wait Sewing speed during wait Slow start during wait Work clamp height during wait Tension during wait 1 Lower thread counter change during wait Production counter clear during wait Lower thread counter setting mode Production counter setting mode Program setting mode Cycle program setting mode Pattern data editing mode 1 Data read write mode Sewing s...

Page 44: ...ction which has currently been set will be displayed in the menu display in mm units 3204B 2648B 3 4441Q Depress the foot switch to the 2nd step Home position detection will be carried out The pattern number will change to illuminated 4 3205B Each time the or key is pressed the work clamp will move by 0 05 mm In X scale parallel movement mode the work clamp will move to the left when the key is pr...

Page 45: ...hange to illuminated 9 Exit parallel movement mode TEST indicator switches off Press the TEST key The display will return to the normal display and the sewing machine will change to home position standby If you would like to return to step 4 press the SELECT key instead of the TEST key 2404B NOTE If you change the program number the X scale or the Y scale the movement amount which has been stored ...

Page 46: ...e those sold by SanDisk and Panasonic Cards from other manufacturers may use different formatting methods and may not work correctly as a result For additional information refer to the instruction manual included with the SD cards that you have purchased This product is compatible with SD cards that have been formatted using the FAT16 32 method Cards that have been formatted using other formatting...

Page 47: ... write mode list below 4 2653B Press the or key to select the mode Read write mode list PROGRAM No display Menu display Setting items r 1 Sew Additional sewing data is read from the SD card 1 w 2 Sew Additional sewing data is written to the SD card r 3 MEM Memory switch settings are read from the SD card w 4 MEM Memory switch settings are written to the SD card r 5 PrG Reads sewing program data an...

Page 48: ...ed 3 While reading The number for the additional sewing data number which is currently being read will appear in the tension value display 2657B 3100B Press the ENTER key 2414B The buzzer will sound and the selected additional sewing data will be read from the SD card and copied into the sewing machine s internal memory If no additional sewing data exists an error buzzer will sound 4 3101B When th...

Page 49: ...e in the sewing machine memory If there is no data in the memory ALL will be the only thing displayed 3 While writing Additional sewing data number being written appears in the tension display 2660B 2658B Press the ENTER key 2414B The buzzer will sound and the selected sewing data will be written to the SD card If no additional sewing data exists an error buzzer will sound 4 2659B When the display...

Page 50: ... read from the SD card and stored in the sewing machine memory and the memory switch settings will then be applied If no memory switch data exists an error buzzer will sound 3 2661B When the display returns to the status in step 1 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 m...

Page 51: ... Press the ENTER key 2414B The buzzer will sound and the memory switch data will be copied to the SD card 3 2664B When the display returns to the status in step 1 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 TEST indicator switches off 2404B Press the TEST key ...

Page 52: ... from the SD card and stored in the sewing machine s memory and 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 2665B When the display returns to the status in step 1 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 ...

Page 53: ...Press the ENTER key 2414B The buzzer will sound and the memory switch data will be copied to the SD card 3 2666B When the display returns to the status in step 1 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 TEST indicator switches off 2404B Press the TEST key ...

Page 54: ...g program data cycle program data memory switch settings and additional sewing data will be read from the SD memory card and stored in the sewing machine s memory and the sewing programs cycle programs and memory switch settings will be applied If no sewing program data or cycle program data exists an error buzzer will sound 3 2669B When the display returns to the status in step 1 reading of the p...

Page 55: ...rs while program data is being written 2672B 2663B Press the ENTER key 2414B The buzzer will sound and the sewing program data cycle program data memory switch settings and additional sewing data will be copied to the SD card 3 2671B 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 t...

Page 56: ...g written 2674B 2675B Press the ENTER key 2414B The buzzer will sound and the error log data and memory switch log data will be copied to the SD card 3 2673B When the display returns to the status in step 1 writing of the log 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 TEST indicator switches off 24...

Page 57: ...ar in the PROGRAM No display and control program version stored on the SD card will appear in the menu display 5 3227B Press the or key to select the program to be updated Control program PROGRAM No display Menu display Mian 1 Mn Motor 2 Mt Panel 3 PL If there is no program to be updated which is stored on the SD card will appear in the menu display 6 WAIT will appear in the menu display and the v...

Page 58: ...echanisms The mechanisms operate in the order of the given in the illustrations 1 Motor assembly 2 Upper shaft 3 Crank rod assembly 4 Rock gear 5 Lower gear 6 Lower shaft 7 Driver 8 Shuttle hook 1 Motor assembly 2 Upper shaft 3 Thread take up crank 4 Needle bar crank 5 Needle bar 5 Thread take up lever connecting rod assembly 6 Needle bar clamp 6 Thread take up 7 Needle bar support 3247B 3246B ...

Page 59: ...amp pulse motor 2 Work clamp driving gear 3 Work clamp cam gear 4 Work clamp cam 5 Work clamp driving lever 6 Work clamp lifter link 7 Work clamp lifter lever 8 Work clamp lifter plate assembly 3248B 9 Slider 10 Work clamp lifter lever 11 Connecting rod 12 Connecting link 13 Work clamp lifter lever 14 Work clamp 3249B ...

Page 60: ... Work clamp lifter lever 3 Work clamp arm lever 4 Work clamp plate 1 Work clamp pulse motor 2 Work clamp driving gear 3 Work clamp cam gear 4 Stepping foot driving lever 5 Stepping clamp lifter rod 6 Stepping clamp lifter 7 Stepping clamp lifter link 8 Stepping clamp link 9 Stepping clamp connecting rod B 10 Presser bar clamp 11 Presser bar 12 Presser foot 3250B 3251B ...

Page 61: ...nism 1 Motor assembly 2 Upper shaft 3 Stepping clamp cam 4 Stepping clamp connecting rod 5 Stepping clamp arm R 6 Stepping clamp arm F 7 Stepping clamp connecting rod A 8 Stepping clamp link 9 Stepping clamp connecting rod B 10 Presser bar clamp 11 Presser bar 12 Presser foot 3252B ...

Page 62: ... Y movements Y direction X direction 1 X feed motor assembly 2 Gear 3 X feed gear 4 X pulley driving shaft 5 Timing pulley 6 Timing belt 7 X feed bracket assembly 1 Y feed motor assembly 2 Gear 3 Y feed rack shaft assembly 4 X feed shaft support 5 X feed shaft 6 Work clamp arm assembly 7 Y feed bracket 3253B 3254B ...

Page 63: ...noid lever 3 Pushing lever 4 Driving lever 5 Thread trimmer collar 6 Thread trimmer cam 7 Thread trimmer rod V 8 Thread trimmer lever 9 Thread trimmer rod H 10 Movable knife lever 3255B 11 Set screw collar 12 Movable knife lever shaft 13 Movable knife connecting plate 14 Movable knife 15 Fixed knife ...

Page 64: ... 6 9 Tension release mechanism 6 10 Thread wiper mechanism 1 Tension release solenoid 2 Bolt 3 Tension release bar 4 Tension release pin 3320B 1 Thread wiper solenoid assembly 2 Thread wiper rod 3 Thread wiper crank assembly 4 Wiper 3345B ...

Page 65: ... tighten the set screws 8 11 and 13 so that they are aligned with the screw stops on the upper shaft 1 starting from the set screws at the front in the turning direction 1 Securely tighten the screw 6 of the thread take up crank 5 so that it is aligned with the upper shaft hole 2 While pressing the thread take up crank 5 so that there is no play in it tighten the set screw 7 Apply adhesive Threebo...

Page 66: ...he grooves Tighten the set screw so that the screw stop A on the motor shaft is in the same phase as the screw stop B on the thread trimmer cam Tighten the set screw so that the screw stop C on the upper shaft is at a phase of approximately 180 degrees from the screw stop A on the motor shaft 4644Q Install the motor assembly 14 so that the harness is facing downward 14 Motor assembly 15 Bolts 4 pc...

Page 67: ...ide block 3339B Inside hole Set so that this hole faces upward and then push in gently while tightening the set screws 14 to install Left hand thread Fit the chamfering side of the slide block 17 into the groove on the slide block guide 1 Do not remove the slide block guide 1 if possible to prevent the machine from overheating due to needle bar rubbing Set so that the lubrication hole is at the to...

Page 68: ...ence line is aligned with the lower edge of the needle bar bush when the machine pulley is turned to raise the needle bar 19 from its lowest position and then set the cut section so that it is facing forward and tighten the screw 4647Q 18 Needle bar clamp 19 Needle bar Insert from above 20 Screw 21 Rubber cap Inside hole 3340B Cut section Needle bar bush ...

Page 69: ...stment Screw the stepping clamp lifter rod 2 in as far as it will go then turn it back 3 times Tighten the set screw 5 on the screw stop while lightly pressing the stepping clamp lifter shaft 4 3325B 1 Stepping clamp lifter 2 Stepping clamp lifter rod insert from the front 3 Screw 4 Stepping clamp lifter shaft 5 Set screw 6 Flat screw 2 5 mm 479 1 mm Place the oil tube into the groove 3324B Inside...

Page 70: ...lamp connecting rod and then tighten the set screws 7 Notes on the installation position Refer to 8 16 Adjusting the intermittent work clamp Tighten the set screw 17 on the screw stop while lightly pressing the link shaft 16 7 Set screws 2 pcs 8 Stepping clamp arm F 9 Stepping clamp arm R 10 Bolt 11 Presser bar clamp 12 Presser bar 13 Bolt Temporarily tighten 14 Stepping clamp lifter link 15 Washe...

Page 71: ...m 2 Then tighten the set screw 8 3 Lastly tighten the two set screws 9 1 Ball bearings 2 pcs 2 Work clamp cam 3 Work clamp cam gear 4 Work clamp fulcrum shaft 5 Retaining ring C 6 Plain washer 7 Screw 8 Set screws 2 pcs 9 Set screws 2 pcs 10 Work clamp driving lever 11 Plain washer 12 Stepping foot driving lever 13 Work clamp lever shaft 14 Set screw 15 Set screw 16 Work clamp lifter link Insert f...

Page 72: ...ver shaft B 24 through the work clamp lifter lever 23 NOTE When the work clamp lifter plate assembly 21 is lowered the slide block 22 moves away so hold the work clamp lifter plate assembly 21 in place until the link shoulder screw 28 is tightened 19 Ball bushing 20 Bolts 2 pcs 21 Work clamp lifter plate assembly 22 Slide block 23 Work clamp lifter lever 24 Work clamp lever shaft B 25 Plain washer...

Page 73: ...se motor P assembly 31 Work clamp driving gear 32 Set screws 2 pcs 33 Work clamp motor plate 34 Bolts 4 pcs 35 Bolts 2 pcs 36 Work clamp spring 2 Install the work clamp pulse motor P assembly 30 to the work clamp motor plate 33 with the four bolts 34 so that the motor connector is facing downward 3 Align the index marks on the work clamp cam gear 3 and the work clamp driving gear 31 and then insta...

Page 74: ...ign the screw stop and then tighten the set screw 12 so that there is no play in the stepping foot driving lever 9 and the set screw collar 10 Check that the stepping foot driving lever 9 turns smoothly 1 Ball bearings 2 pcs 2 Work clamp cam gear 3 Work clamp fulcrum shaft 4 Retaining ring C 5 Plain washer 6 Screw 7 Set screw 8 Set screw 9 Stepping foot driving lever 10 Set screw collar 11 Work cl...

Page 75: ...h is 0 01 0 05 mm 1 Set so that the clearance between the work clamp pulse motor P assembly 16 and the work clamp driving gear 17 is 6 2 mm when the screw stop on the work clamp pulse motor P assembly 16 is facing downward and the index mark on the work clamp driving gear 17 is on the right and then tighten the two set screws 18 against the screw stops one after the other 3335B Index mark 16 Work ...

Page 76: ...ming belt 4 Timing pulley 5 X pulley driving shaft 6 Retaining ring C 7 X feed gear 8 Set screws 6 pcs 3270B Apply adhesive Threebond 1324N or similar to the outer bearing surface of the ball bearing 1 Apply adhesive Threebond 1324N or similar to the outer bearing surface of the ball bearing 1 Apply adhesive Threebond 1324N or similar to the outer bearing surface of the ball bearing 2 While pushin...

Page 77: ...e Threebond 1324N or similar to the outer bearing surface of the ball bearing 10 Apply adhesive Threebond 1324N or similar to the outer bearing surface of the ball bearing 10 3271B 9 X pulley bracket 10 Ball bearings 2 pcs 11 Timing pulley 12 X pulley fulcrum shaft 13 Set screws 4 pcs 14 Bolts with washer 4 pcs ...

Page 78: ... against the three set screws 21 on the inside 3 Install the two Y feed guide covers 24 to the two Y feed guides 16 and 20 using the eight flat screws 25 which have had adhesive Threebond 1401N or similar applied to them Position the ball bushings so that the balls in the ball bushings are at an angle of 45 to the surface of the X feed base 15 X feed base plate assembly 16 Y feed guide 17 Bolts 5 ...

Page 79: ...all so that the backlash is 0 01 0 05 mm 33 X feed motor L assembly 34 Bolts with washer 3 pcs 3272B 3273B Engage 3374B 28 Feed bracket assembly 29 X feed shafts 2 pcs 30 Set screws 4 pcs 31 Belt work clamp plate 32 Screws 4 pcs ...

Page 80: ... 311H 71 Install so that the backlash is 0 01 0 05 mm 35 Y rack shaft assembly 36 Bolts with washer 2 pcs Temporarily tighten 37 X feed shaft support 38 Y feed motor L assembly 39 Bolts with washer 3 pcs 3274B 3275B ...

Page 81: ... feed shaft 8 Set screws 2 pcs 9 Bolts with washer 2 pcs Fully tighten Pneumatic work clamp specifications 3276B After installing carry out test feeding and check that the needle hole is inside the work clamp arm assembly 3 and the feed plate 1 frame If the needle hole is not inside the frame adjust the position of the work clamp arm assembly 3 and feed plate 1 Needle hole 3277B ...

Page 82: ... 3 Cover rails L 2 pcs 4 Screws 4X8 16 pcs 5 Plain washers 4 pcs 6 Spring washers 4 pcs 7 Nuts 4 pcs 8 Outside covers 2 pcs Place into cover rail 9 Inside cover R assembly 10 Inside cover L assembly 11 Screws 4X8 4 pcs 12 Bellow assembly 13 Plain washers 4 pcs 14 Screws 4 pcs 3278B ...

Page 83: ...edge of the bed Refer to 8 9 Rotary hook lubrication amount 1 Shuttle race base assembly 2 Set screw 3 Set screw 4 Adjusting stud 5 Rock gear shaft Insert from the rear of the machine head 6 Rock gear 7 Set screw collar B 8 Set screws 2 pcs 9 Set screw collar R 10 Set screw Temporarily tighten 11 Set screws 3 pcs Temporarily tighten 3338B 3280B Adjust while referring to 8 21 Adjusting the backlash...

Page 84: ...Align the mating mark 19 Bolts 2 pcs 20 Crank cover 21 Screws 3 pcs Bush reference line Edge of bed 3375B 3282B 3281B 3368B Insert the crank rod lower part 16 and the needle bearing 17 into the crank of the upper shaft then insert the needle bearing 17 from above and then place the crank rod upper part 18 on top of that so that the mating marks are aligned then gently tighten the bolts 19 Check th...

Page 85: ...ook 4 carry out the adjustments in 8 6 Adjusting the timing and the driver needle guard and 8 7 Adjusting the needle clearance 1 Needle bar thread guide 2 Needle 3 Set screw 4 Shuttle hook 5 Shuttle race base 6 Shuttle race base setting claw Close 7 Bobbin 8 Bobbin case 5149Q 3285B ...

Page 86: ... 12 Nut 13 Thread trimmer lever shaft 14 Set screws 2 pcs 15 Spacers 2 pcs 16 Spring 17 Spring hook When the ball joint assembly of thread trimmer rod assembly H 2 has been disassembled assemble it so that the distance between the centers of the holes is 315 5 0 5 mm Ball joint assembly 3265B While gently pushing the movable knife lever shaft 5 and the set screw collar 7 together from above and be...

Page 87: ... Shoulder screw 42 Set screw 43 Nut 44 Movable knife connecting plate 45 Shoulder screw 46 Shoulder screw B 47 Nut When the ball joint assembly of the thread trimmer rod assembly V 23 has been disassembled assemble it so that the distance between the centers of the holes is 287 5 0 5 mm Assemble so that the wick is hanging down Tighten the set screw 22 on the screw stop while lightly pressing the ...

Page 88: ...he screws 57 and the flat screws 58 so that the needle drops into the center of the needle hole 48 Fixed knife 49 Plain washers 2 pcs 50 Screws 2 pcs 51 Movable knife spacer 52 Movable knife assembly 53 Movable knife collar 54 Thrust washer 55 Movable knife shoulder screw 56 Needle plate 57 Screws 2 pcs 58 Flat screws 2 pcs 59 Movable knife connecting plate 3286B 3287B ...

Page 89: ...t of the roller 62 so that it is 155 5 mm above the top of the needle plate 3 Set the height of the presser bar 65 to 41 mm above the needle plate align the center of the presser foot 66 hole and the needle hole and then tighten the bolt 67 4 Set the height of the presser foot 66 to 22 mm above the needle plate and then tighten the screw 68 5 Turn the cam gear 60 in the direction of the arrow to m...

Page 90: ... to 8 2 Standard thread tension 1 Tension release bar 2 Retaining ring E 3 Plain washer 4 Spring 5 Tension release solenoid 6 Solenoid setting plate 7 Solenoid cushion 8 Plain washer 9 Nut 10 Bolt 11 Plain washers 2 pcs 12 Spring washers 2 pcs 13 Bolts 2 pcs 14 Screws 2 pcs 15 Solenoid cover 16 Screws 2 pcs 17 Tension release pin 18 Tension bracket assembly 19 Set screw 3326B ...

Page 91: ...echanism Align the thread wiper shaft bracket and the bottom of the arm and then tighten the two bolts with washer 2 1 Thread wiper unit 2 Bolts with washer 2 pcs 3 Plain washer 4 Bolt 5 STOP switch harness 6 Thread wiper solenoid harness 3341B ...

Page 92: ... plate brackets M 2 pcs 4 Bolts with washer 4 pcs 5 Auxiliary plate brackets L 6 Auxiliary plate brackets R 7 Bolts with washer 4 pcs 8 Auxiliary plate 9 Auxiliary plate cushions 8 pcs 10 Screws 8 pcs 11 Nuts 8 pcs After installing carry out the adjustments in 8 22 2 X Y feed home position 3279B 3337B Needle plate ...

Page 93: ...s 1 Shuttle race cover assembly 2 Screws 2 pcs 3 Face plate assembly 4 Screws 3 pcs 5 Eye guard assembly 6 Plain washers 2 pcs 7 Screws 2 pcs 8 Side cover 9 Screws 4 pcs 10 Rear cover 11 Screws 4 pcs 12 Top cover 13 Screws 6 pcs 3288B ...

Page 94: ...ith both hands when tilting it back or returning it to its original position Furthermore after tilting back the machine head do not push the face plate side or the pulley side from above as this may cause the machine head to topple over which may result in personal injury or damage to the machine If the power switch needs to be left on when carrying out some adjustment be extremely careful to obse...

Page 95: ...lar 20 or similar 4 or similar Lower thread 50 or similar 20 or similar 4 or similar Upper thread tension N 0 8 1 2 1 4 1 8 1 2 2 0 Lower thread tension N 0 2 0 3 1 0 1 5 Pre tension N 0 1 0 3 0 1 0 6 0 3 0 6 Needle DP x 5 16 DP x 17 19 DP x 17 25 Normal sewing speed 2 000 sti min 2 000 sti min 1 300 sti min 8 2 1 Upper and lower thread tension 3317B 3318B ...

Page 96: ...th will be uneven after thread trimming 8 4 Arm thread guide R 3122B Thread take up spring tension Turn the tension stud 2 with a screwdriver to adjust the tension 3123B The standard position of arm thread guide R 1 is when the screw 2 is aligned with the index mark Loosen the screw 2 and move arm thread guide R 1 to adjust When sewing heavy material move arm thread guide R 1 to the left The threa...

Page 97: ...1 Turn the pulley 1 in the direction of the arrow to raise the needle bar from the lowest position until the lowest reference line on the needle bar reference line B is aligned with the lower edge of the needle bar bush 2 If using a DP x 5 needle align with reference line b which is the second reference line from the top 2 Loosen the bolt 3 3 Move the driver 4 sideways so that the rotary hook tip ...

Page 98: ... thread guide is in the wrong position thread breakages soiled thread or tangling of the thread may occur The position of the shuttle race thread guide is adjusted at the time of shipment from the factory It should not be changed if possible 8 9 Rotary hook lubrication amount 3127B The optimum position is when the head of the set screw 1 is aligned with the edge of the bed The rotary hook lubricat...

Page 99: ...rimmer cam 4 and then loosen the set screw 5 by approximately 1 4 of a turn 4 Tighten the nut 2 and then check that the collar 3 is not touching the inside of the groove in the thread trimmer cam 4 In addition push the driving lever 6 by hand toward the thread trimmer cam 4 until the collar 3 touches the groove of the thread trimmer cam 4 and then check that the driving lever 6 returns smoothly to...

Page 100: ...e on the right side of the needle plate to the ridge on the movable knife 12 is 9 5 to 9 9 mm 10 After tightening the bolt 11 check the above position once more Ignore the index mark on the needle plate 11 Replace the cover 10 12 Check that there is a gap of about 0 1 mm between the outside of the hole in the movable knife 12 and the ridge line on the shuttle race thread guide 14 when there is sti...

Page 101: ...the shoulder screw 9 and then install the new movable knife 6 together with the thrust washer 10 and the movable knife spacer 11 6 Check that the movable knife 6 and fixed knife 7 cut the thread cleanly Replace the movable knife spacer with accessory spacers t 0 2 0 3 0 4 so that the knives trim the thread accurately If the knife pressure is too weak and the thread is not completely cut use a thin...

Page 102: ... with the index mark U is facing upward Place the rear edge of the feed plate 1 against the stepped part of base plate Y 2 shaded section A and use a 2 mm diameter pin such as a needle to align the hole in the feed plate 1 with the hole in base plate Y 2 then tighten the two socket bolts 3 Index mark 3343B ...

Page 103: ...om the thread wiper 2 to the tip of the needle is approximately 2 mm and the tip of the thread wiper 2 is approximately 3 mm from the center of the needle when the thread wiper 2 passes below the needle during operation Note Check that the thread wiper 2 does not touch the finger guard 8 15 Presser foot installation position 5031Q Install the presser foot 1 with the screw 2 so that the distance fr...

Page 104: ...late 2 Remove the two screws 1 and the two shoulder screws 2 and then remove stepping clamp link A 3 3 Change the installation position for stepping clamp link A 3 to either A B or C above If the position of the stepping clamp connecting rod is adjusted as described in the following at any one of the installation positions the adjustment range for the intermittent stroke will as given in the follo...

Page 105: ...ittent stroke will decrease Next adjust the needle bar and presser foot timing 3 Turn the pulley 5 in the direction of the arrow to raise the needle bar from the lowest position until the lowest reference line on the needle bar reference line B is aligned with the lower edge of the needle bar bush 6 If using a DP x 5 needle align with the second reference line from the top reference line b 4 Open ...

Page 106: ...intermittent presser foot 1 to its lowest position 2 Check that the presser foot 1 does not touch the needle plate and that the presser bar clamp 3 does not touch the presser bar bush 4 If they are touching Remove the motor cover 5 Loosen the nut 6 and turn the bolt 7 until it is pressing against the intermittent drive lever 8 and then adjust until the two points mentioned above are not touching N...

Page 107: ...Turn on the air and then depress the clamp switch 1 to raise the work clamp 2 2 Loosen the two bolts 4 of the work clamp arm lever 3 and move the work clamp arm lever 3 up or down to adjust 8 18 Adjusting the air pressure pneumatic work clamp specifications 1912B Lift up the handle 2 of the regulator 1 and then turn it to adjust the air pressure to 0 5 MPa After adjustment is complete push the han...

Page 108: ...hen remove the M5 25 screw 5 Use a tension gauge to measure the belt tension at the middle of the lower shaft while referring to Measurement position in the illustration Check that the value for the belt tension is within the following value ranges If it is not within this range repeat steps 3 to 5 For a new belt 530 570N For a reused belt 420 570N The belt tension gauge should be set to measure a...

Page 109: ...lt 2 and the solenoid setting plate 3 is 16 5 mm when the plunger of the tension release solenoid 1 is pushed in as far as it will go 2 Check that the tension disc opening amount is 1 0 1 5 mm when the tension release solenoid 1 is installed to the arm and the plunger is pushed with a screwdriver or similar tool through the hole in the solenoid cover 5156Q 4689Q ...

Page 110: ...you place a rag or similar over the table to catch the oil that drips 3347B 3348B 3 Loosen the three set screws 3 4 Loosen the set screw 4 and turn the pulley while moving the rock gear 5 back and forth At the position where the pulley moves freely place set screw collar R 6 against the edge of the bed and tighten the set screw 4 5 Turn the rock gear shaft 7 to adjust the play at the end of the dr...

Page 111: ...displayed in the menu display 3256B 2789B 3 2798B Press the SELECT key so that the THREAD CLAMP indicator illuminates 4 Depress the foot switch to the 2nd step for a two pedal foot switch depress the start switch Home position detection for the work clamp lift motor will be carried out based on the currently displayed offset value orG will illuminate in the PROGRAM No display If you would like to ...

Page 112: ... work clamp lifter plate 1 will move in conjunction with the setting value 5206Q 2800B 2801B 2899B Pneumatic work clamp specifications 1 Remove the rear cover align the index marks of the work clamp cam gear 2 and the work clamp driving gear 3 to the center line and then press the or key to change the offset value 999 999 The offset value in the menu display will flash and JoG will illuminate in t...

Page 113: ...ON display 4441B 7 Repeat steps 5 and 6 to set the home position to the correct position 8 Press the ENTER key to confirm the offset value The offset value will illuminate in the menu display If the offset value has not been provisionally confirmed if JoG is illuminated the invalid buzzer will sound 2414B 9 Exit adjustment mode TEST indicator switches off Press the TEST key The display will return...

Page 114: ...2789B 3 Press the SELECT key so that either the X SCALE indicator or the Y SCALE indicator illuminates 2790B 2401B 4 Depress the foot switch to the 2nd step for a two pedal foot switch depress the start switch Home position detection for the X feed or Y feed motor will be carried out based on the currently displayed offset value orG will illuminate in the PROGRAM No display If you would like to re...

Page 115: ...ce plate 1 with the hole in Y feed bracket 2 then tighten the two bolts 3 3 Press the or key to set the offset value 50 to 50 so that the needle drops to the center of the mark B on the home position reference plate 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 illuminate in the TENSION display 3258B 2793B 2794B 2...

Page 116: ...appear from the TENSION display 4441Q 2796B 7 Repeat steps 5 and 6 to set the home position to the correct position 8 Press the ENTER key to confirm the offset value The offset value will illuminate in the menu display If the offset value has not been provisionally confirmed if JoG is illuminated the invalid buzzer will sound 2414B 9 Exit adjustment mode TEST indicator switches off Press the TEST ...

Page 117: ... position 7 While pressing the keys simultaneously turn on the power switch orG will flash in the PROGRAM No display and the currently recorded offset value will be displayed in the menu display 3364B 8 Turn the machine pulley once to lower the needle bar 1 to height H When the needle bar 1 is at the position of H it is lowered 6 7 mm from its highest position 9 Press the ENTER key UP will illumin...

Page 118: ...p flashing and illuminate steadily 4441Q 3 Press the or key to set the offset value 9 10 When you press the key the needle bar will drop and when you press the key it will rise NOTE After changing the offset value check that the thread trimming operation is normal 2793B 4 2nd step Depress the foot switch to the 2nd step If using a two pedal foot switch lower the work clamp before depressing the st...

Page 119: ...ress the ENTRY key XXX indicates the treadle depression voltage 3397B 3 Memorizing the neutral position With your foot released from the foot switch wait until the value in the TENSION display stabilizes and press the ENTER key 3398B 4 Memorizing the maximum backward position With the foot switch depressed all the way backward wait until the value in the TENSION display stabilizes and then press t...

Page 120: ...eep the oil out of the reach of children If you are frequently sewing heavy weight materials using the sewing machine for long periods or using the sewing machine in places where there is a lot of dust it is recommend that you apply grease to maintain the performance of the feed mechanism Applying grease Use Brother specified Grease unit SB1275 101 Ask the place of purchase for details on obtainin...

Page 121: ... all the way to the rear edge and then apply grease to groove A Push the work clamp arm 3 all the way to the front edge lift up the bellows 4 and then apply grease to groove B 4 Install the feed plate Refer to the CD Instruction Manual 10 11 Installing the feed plate 3222B 3224B 3225B 3223B ...

Page 122: ...r is turned off To prevent electric shock wait at least 5 minutes after 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 contro...

Page 123: ... the voltages which are required for control operations Conversion transformer box 100V 110V 380V 400V AC specifications only Steps down the power supply voltage and generates the voltage 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 th...

Page 124: ...cified 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 blow F1 F2 G fuse 10A 250V Glass tube fuse 10A 250V J04417 001 The power indicator is not illuminated and nothing operates Motor PCB 2930B ...

Page 125: ...nnectors that are not inserted correctly or which are contacting poorly As a result check that all connectors are inserted correctly and that the pins and wires are crimped properly before carrying out problem diagnosis 10 4 1 Connector positions Motor PCB Refer to the diagram in 10 3 Fuse explanation Main PCB 3421B ...

Page 126: ...10 ELECTRIC MECHANISM BAS 311H 117 Power PCB Panel PCB 0831D 2687B ...

Page 127: ...0 is displayed Problem with movement in the forward back Y direction Error E210 E211 E214 E215 or E216 is displayed 2934B Problem with movement in the sideways X direction Error E200 E201 E204 E205 or E206 is displyaed 2935B The feed motor does not operate for home position detection immediaterly after the power is turned on Error E300 is displayed 2936B Work clamp mechanism Problem Connector No a...

Page 128: ...perate No error displayed 2939B Tension release solenoid does not operate No error displayed 0838D Sewing operation Problem Connector No and position The power indicator is not illuminated and nothing operates Machine operation is unstable 2942B The main shaft motor does not operate correctly Error E130 is displayed 2943B ...

Page 129: ...ation panel key does not have any effect 2944B The sewing machine does not operate when the foot switch is depressed No error displayed Error E055 is displayed after the power is turned on 2946B Error E452 is displayed after the power is turned on 2947B The machine does not start up with the brother display appearing 2948B Continued on next page 3424B ...

Page 130: ...e power indicator illuminates Nothing appears on the operation panel display 2949B The sewing machine does not operate when the foot switch is depressed Error E130 is displayed 0848D Error E131 is displayed 0849D Error E015 or E016 is displayed after the power is turned on 0843D ...

Page 131: ...ols 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 10 5 2 Problem solution and measures Turning off of the power switch 2952B 2707B ...

Page 132: ...the program you ordinarily use is not set the needle may hit the work clamp Note For a two pedal foot switch depress the start switch When the work clamp does not move at all No error displayed When the error code E130 E131 or E132 appears on the display When the error code E200 appears on the display When the error code E210 appears on the display When the error code E300 appears on the display O...

Page 133: ...e stitch by stitch Depress the foot switch to the first position Does the feed mechanism move quickly Does the tension release operate Release the foot switch Does the machine operate correctly for the set program and return to the swing start position Press the TEST key to turn off its indicator Note For a two pedal foot switch depress the work clamp switch and then depress the start switch OFF O...

Page 134: ... after the machine start to move Does the work clamp move stitch by stitch so as to form stitches Is the thread trimmer activated Does the needle stop in the up position OFF Insert the SD card and then turn on the power While pressing the TEST key press the ENTER key Is the SD card read write mode active Normal Note For a two pedal foot switch depress the work clamp switch and then depress the sta...

Page 135: ...nything 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 connector is secure...

Page 136: ...ting turn off the power switch and connect the power supply connector 3 Blown fuse Turn off the power switch wait for five minutes or more and then remove fuses F1 and F2 from the motor PCB and check the continuity OK if there is continuity GFUSE10A 250V 10A 250V 4 Malfunction of motor PCB 1 Turn off the power switch and remove P2 DCIN from the power PCB turn the power back on and then check LD2 r...

Page 137: ...f illuminated After checking turn off the power switch wait for one minute or more and then insert P1 into the main PCB and P1 P2 and P3 into the motor PCB Motor PCB assembly 8 Malfunction of panel PCB Turn off the power switch and disconnect connector P1 POWER2 from the main PCB and connectors P1 MT ENC and P2 MAIN from the motor PCB and then turn on the power switch and check LD2 red on the powe...

Page 138: ...s are pressed b 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 Panel PCB assembly Panel harness 5 If E131 is displayed there is a poor connection of the synchronizer Check that connector P11 RESOLVER and P1 MT ENC is connected to the motor PCB and that connector P6 MT ENC is connected to the main PCB 6 I...

Page 139: ...voltage between pins 3 4 of the cord connector No 3 No 4 OK if the voltage is approximately 2 V at neutral approximately 4 V when the foot switch is depressed as far as it will go and approximately 0 5 V when it is depressed backward Foot switch 3 Malfunction of foot switch and cord option 2715B Check that the power is turned off Disconnect the foot switch from the foot switch adapter harness and ...

Page 140: ...blown fuse a Remove fuses F1 and F2 from the motor PCB and check the continuity OK if there is continuity b If fuse F1 of F2 is blown check the resistance values between each pin of the relay connector between the upper shaft motor and the motor PCB and between each terminal of the fuses OK if ohms c If the fuses blow again after they are replaced replace the motor PCB GFUSE10A 250V 10A 250V Motor...

Page 141: ...terminals 1 and 2 3 and 4 of P21 OK if ohms c Insert P21 and P24 into the main PCB turn on the power switch and then check LD1 red on the power PCB OK if illuminated If LD1 is illuminated during the check in step 1 but it does not illuminate when P1 and P24 are connected there is a malfunction of the main PCB d Check LD1 orange on the main PCB OK if illuminated Main PCB assembly 311H 3 If the X fe...

Page 142: ...terminals 1 and 2 3 and 4 of P22 OK if ohms c Insert P22 and P24 into the main PCB turn on the power switch and then check LD1 red on the power PCB OK if illuminated If LD1 is illuminated during the check in step 1 but it does not illuminate when P1 and P24 are connected there is a malfunction of the main PCB d Check LD1 orange on the main PCB OK if illuminated Main PCB assembly 311H 3 If the Y fe...

Page 143: ...n terminals 1 and 2 3 and 4 of P23 OK if ohms c Insert P23 and P24 into the main PCB turn on the power switch and then check LD1 red on the power PCB OK if illuminated If LD1 is illuminated during the check in step 1 but it does not illuminate when P1 and P24 are connected there is a malfunction of the main PCB d Check LD1 orange on the main PCB OK if illuminated Main PCB assembly 311H 3 If the wo...

Page 144: ... moves smoothly Work clamp arm assembly Error status 11 The TEST indicator does not light when the TEST key is pressed Probable causes Check repair adjust Parts to be replaced 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 Panel PCB assembly Panel harness Error status 12 The feed mechanism does not slowl...

Page 145: ... LD2 green on the main PCB OK if illuminated b With connector P3 SOL2 disconnected from the main PCB check the continuity between terminals 1 and 2 of connector P3 on the main PCB OK if ohms c With main PCB connector P3 SOL2 connected turn on the power and carry out sewing and measure the voltage between pins 1 2 of connector P3 SOL2 OK if there is voltage output change during sewing Main PCB asse...

Page 146: ...ly Motor PCB assembly 5 If E111 E130 E131 E132 or E133 is displayed after the sewing machine operates there is a malfunction of the motor PCB or of the upper shaft motor If an error occurs after inspection steps 1 to 4 above have been carried out there is a malfunction of the upper shaft motor Motor 430 assembly 6 If E121 is displayed after the sewing machine operates there is a malfunction of a c...

Page 147: ...nchronizer Refer to step 1 in 17 2 If uneven seams are being sewn there is a malfunction of the pulse motor or the mechanism is incorrectly adjusted a Refer to step 4 in 6 b If the uneven seams are due to insufficient work clamp pressure adjust while referring to 8 17 Adjusting the work clamp lift amount c If there is play in the feed mechanism adjust the feed mechanism ...

Page 148: ...id Disconnect main PCB connector P3 SOL2 and measure the resistance between pins 1 2 of the cord connector OK if 6 8 ohms Tension solenoid 6 Malfunction of main PCB a Turn on the power switch and check LD2 green on the main PCB OK if illuminated b Turn off the power switch and with connector P2 SOL1 disconnected from the main PCB check the continuity between terminals 3 and 6 of connector P2 on th...

Page 149: ...otor 430 assembly Error status 21 SD card read write mode cannot be activated Probable causes Check repair adjust Parts to be replaced 1 If E420 is displayed the SD card is incorrectly inserted a Check the direction of insertion of the SD card Insert the card so that it matches the direction of the pattern on the card cover b Check the insertion of the SD card 2 E425 SD card is write protected Rem...

Page 150: ...essed when the power was turned on or there is a problem with the stop switch connection Turn off the power and then check that connector P9 on the main P C board is properly connected E016 Problem with the stop switch connection Turn off the power and then check that connector P9 on the main P C board is properly connected E025 Start switch was being depressed when power was turned on For a foot ...

Page 151: ... board are properly inserted E131 Synchronizer is not connected correctly Turn off the power and then check that connector P11 on the motor P C board is properly connected E132 Problem detected with upper shaft motor operation Turn off the power and then check that connectors P11 and P1 on the motor P C board connector P6 on the main P C board and connector P4 on the upper shaft motor P C board ar...

Page 152: ...off the power and then check that connectors P17 and P21 on the main P C board are properly connected E210 Y feed motor home position cannot be detected Problem with Y feed motor or poor Y home position sensor connection Turn off the power and then check that connectors P18 P22 and P8 on the main P C board are properly connected E211 Y feed motor stopped due to a problem Turn off the power and the...

Page 153: ...sition sensor connection Turn off the power and then check that connectors P19 P23 and P8 on the main P C board are properly connected E301 Work clamp raised or lowered position cannot be detected Turn off the power and then check if there are any problems in the work clamp vertical direction Turn off the power and then check that connectors P19 and P23 on the main P C board are properly connected...

Page 154: ...s invalid or it has no corresponding data Press the RESET key to clear the error Check that data for this sewing data number is present on the SD card E422 An error occurred while reading from the SD card Check the data When reading BAS 311G user programs first read the sewing data Press the RESET key to clear the error Check the data on the SD card E424 Insufficient free space on the SD card Pres...

Page 155: ...Number of stitches exceeds allowed maximum Press the RESET key to clear the error E581 Memory switch file cannot be read correctly The model for the data which was read does not match the model being written to Press the RESET key to clear the error Read data for the same sewing machine model E582 Memory switch versions do not match Press the RESET key to clear the error Read data for the same ver...

Page 156: ...the power and then check the air pressure Version updating related errors Code Cause of error and remedy E870 No control program is present Install the control program E880 Version update requests cannot be received Turn off the power and then turn it back on again E881 Version updating did not complete normally Turn off the power and then repeat the version update procedure E882 Communication err...

Page 157: ...matic work clamp specifications only Speed controller has been tightened too far Adjust the speed controller by loosening it 4 turns from the fully tightened position CD Instruction manual Thread wiper does not work Thread wiper setting is OFF Set the thread wiper setting to ON CD Instruction manual Work clamp arm lever position is incorrect Pneumatic work clamp specifications Adjust the position ...

Page 158: ...tely 30 mm CD Instruction manual Thread unraveling at sewing start Sewing start speed is too fast Adjust the sewing start speed CD Instruction manual Rotary hook tip is missing Replace the part Needle is too thin Needle is too thick Select a needle that is suitable for the sewing conditions CD Instruction manual Needle is bent Replace the needle CD Instruction manual Needle is not installed correc...

Page 159: ... Repair the respective part by buffing it Alternatively replace the part Lower thread is breaking Lower thread tension is too strong Reduce the lower thread tension CD Instruction manual Needle is bent Replace the needle CD Instruction manual Needle is too thin Select a needle that is suitable for the sewing conditions CD Instruction manual Adjust the driver needle guard P 88 Needle and rotary hoo...

Page 160: ...ard the feed timing Intermittent height of intermittent work clamp is too low Adjust the intermittent height of the intermittent work clamp CD Instruction manual Adjust the driver needle guard P 88 Upper thread is not tight 0573M Needle and rotary hook tip are touching Adjust the needle clearance P 89 Lower thread tension is too weak Increase the lower thread tension CD Instruction manual Lower th...

Page 161: ...13 7 SEGMENT DISPLAY LIST BAS 311H 152 13 7 SEGMENT DISPLAY LIST 4268M ...

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