Brother BAS-311G Service Manual Download Page 96

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7. ADJUSTMENT

BAS-311G, BAS-326G

7-2. Standard thread tension

Specifications

Heavy-weight materials (-01)

Medium-weight materials (-02)

Upper thread

#20 or similar

#50 or similar

Lower thread

#20 or similar

#50 or similar

Upper thread tension (N)

1.4

−

1.8

0.8

−

1.2

Lower thread tension (N)

0.2

−

0.3

Thread take-up spring height

(mm)

−

Thread take-up spring

tension (N)

0.6

−

1.2

0.2

−

0.5

Pre-tension (N)

0.1

−

0.6

0.1

−

0.3

Needle

DP x 17 #19

DP x 5 #16

Normal sewing speed

2,000 rpm

7-2-1. Upper and lower thread tension

5155Q

4661Q

Summary of Contents for BAS-311G

Page 1: ...BAS 311G BAS 326G Please read this manual before making any adjustments DIRECT DRIVE PROGRAMMABLE ELECTRONIC PATTERN SEWER SERVICE MANUAL ...

Page 2: ...t accidents and injury to yourself or other people The meanings of these indications and symbols are given below Indications DANGER The instructions which follow this term indicate situations where failure to follow the instructions may result in death or serious injury CAUTION The instructions which follow this term indicate situations where failure to follow the instructions could cause injury w...

Page 3: ...ower 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 electrical work that may need to be done The sewing machine weighs approximately 88 kg The installation should be carried out by two or more people Do not connect the ...

Page 4: ...ating oil and grease so that they do not get into your eyes or onto your skin If the oil and grease get into 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 ...

Page 5: ... 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 5 Direction of operation Safety devices Devices such as eye guard finger guard thread take up cover motor cover tension release solenoid cover inner cover outer cover fixed cover and gas spring support cover 5222Q 4905Q Tension r...

Page 6: ...g sewing data to floppy disks 32 3 15 Reading extended option output data from a CF card 33 3 16 Writing extended option output data to CF cards 34 3 17 Reading extended option output data from floppy disks 34 4 MECHANICAL DESCRIPTIONS 35 4 1 Needle bar and thread take up mechanisms 35 4 2 Lower shaft and shuttle race mechanisms 35 4 3 Work clamp lifter mechanism Solenoid specifications 36 4 4 Wor...

Page 7: ...ead guide 92 7 8 Rotary hook lubrication amount 92 7 9 Adjusting the position of the movable knife 93 7 10 Replacing the movable and fixed knives 95 7 10 1 Installing the feed plate 96 7 11 Adjusting the thread wiper 97 7 12 Presser foot installation position 97 7 13 Changing the intermittent stroke 98 7 14 Adjusting the work clamp lift amount 100 7 15 Adjusting the air pressure pneumatic specific...

Page 8: ...ons Max 30 mm 2 step work clamp Solenoid specifications Integrated type work clamp Pneumatic specifications Separate type work clamp Intermittent presser foot lift amount 22 mm Intermittent stroke 2 4 5 mm 4 5 10 mm or 0 Default setting 3 mm Rotary hook Double capacity shuttle hook standard shuttle hook sold separately Wiper device Standard equipment Thread trimmer Standard equipment Data storage ...

Page 9: ...function Refer to 2 10 Software version checking method 3 Data initialization function Refer to the Instruction Manual 8 Feed plate installation mode Refer to 7 10 1 Installing the feed plate 4 Error log display function Refer to 2 7 Error history checking method 9 Home position adjustment mode Refer to 7 20 Adjusting the home position 5 Input checking function Refer to 2 8 Input checking method 1...

Page 10: ...read counter setting mode Refer to the Instruction Manual 6 Parallel movement mode Refer to the Instruction Manual 3 Production counter setting mode Refer to the Instruction Manual 7 Stitch counter checking mode Refer to 2 6 Stitch counter checking method 4 Production counter temporary display function When SPEED indicator is illuminated Refer to the Instruction Manual 8 CF data read write mode Re...

Page 11: ... changed from default settings While pressing the SELECT key press the or key The numbers of memory switches that have been changed from default settings will appear in order If no memory switches have been changed from their default settings the display will not change and the buzzer will beep twice 3 Ending setting mode TEST indicator switches off Press the TEST key The changes will be memorized...

Page 12: ... 5 stitches is set by memory switch numbers 151 155 100 ON 1st stitch at 400 rpm 2nd stitch at 400 rpm 3rd stitch at 600 rpm 4th stitch at 900 rpm 5th stitch at 2 000 rpm OFF Single stitch test feed OFF Test feed starts when the foot switch start switch is depressed and it continues automatically until the final stitch 200 ON Test feed is carried out one stitch at a time when the foot switch start...

Page 13: ...lamp drops sewing machine starts in that order and the work clamp lifts when the foot switch is depressed backward The work clamp does not stop in the intermediate position if memory switch No 003 is set to 1 8 For pneumatic specifications 2 pedal When the work clamp switch is depressed the left work clamp drops right work clamp drops both work clamps lift in that order The left and right order ca...

Page 14: ... type work clamp pneumatic specifications 0 Disabled 1 Valve output is reversed for pneumatic specifications Connect the air tubes in reverse so that the work clamp can lift when the power is turned off 055 2 Reverse valve output 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 Thread winding opera...

Page 15: ...st stitch sewing speed at the sewing end 157 4 27 Units x100 rpm 27 3rd last stitch sewing speed at the sewing end 158 4 27 Units x100 rpm 27 2nd last stitch sewing speed at the sewing end 159 4 20 Units x100 rpm 12 Piercing force boosting operation OFF Disabled 161 ON Piercing force boosting operations are carried out when the sewing machine motor is locked OFF Regulation of sewing speed changes ...

Page 16: ...e order of right edge of X in front of Y 254 3 Moves to start position in the order of left edge of X Y start point X start point in the order of left edge of X in front of Y 0 Changes the overall feed timing 260 10 10 10 Early 0 Standard 10 Late 0 Changes the feed timing for the 1st stitch at the sewing start 261 10 10 10 Early 0 Standard 10 Late 0 Changes the feed timing for the 2nd stitch at th...

Page 17: ...or each item of sewing data 1 Counted for each thread trimming operation 352 2 Counted when sewing data ends or when split stops 0 Counter timing for lower thread counter OFF Counted at the end of sewing 353 ON Counted at the start of sewing OFF Switching program numbers using an external switch 0 Disabled 354 1 9 Program number is switched by means of the 5 bits of option input EXIN6 EXIN10 Appli...

Page 18: ...ten into the temporary buffer area If sewing data with the same program number already exists in internal memory it is deleted 466 2 Assignment mode Sewing data is overwritten into the temporary buffer area If sewing data with the same program number already exists in internal memory it is not deleted but only the data in the temporary buffer is used If sewing data with the same program number alr...

Page 19: ...or Option output No 3 output option input No 1 right sensor input No 2 left sensor Pneumatic specifications 0 Disabled 1 Standard operation 2 Sewing starts when cassette sensor is ON 560 3 Start switch is enabled even if cassette sensor is OFF 0 Timer from sensor detection to sewing start when automatic ejector automatic starting is set memory switch No 560 2 Pneumatic specifications 561 0 999 Tim...

Page 20: ...alue Run in operation mode 0 Disabled 1 While the foot switch is being depressed the work clamp moves up and down once and then continuous operation starts Work clamp does not move up or down if memory switch No 050 2 or 4 2 While the foot switch is being depressed the work clamp moves up and down twice and then continuous operation starts Work clamp does not move up or down if memory switch No 05...

Page 21: ...pped 0 1 ON ON Automatic lift 0 1 OFF OFF Yes Dropped Dropped 0 1 OFF ON Analog drop No Dropped Dropped 0 2 Automatic lift 1 1 ON OFF Automatic lift Dropped 1 1 ON ON Automatic lift 1 1 OFF OFF Yes Dropped Dropped 1 1 OFF ON 1st step drop No Dropped Dropped 1 2 Automatic lift 2 1 ON OFF Automatic lift Dropped 2 1 ON ON Automatic lift 2 1 OFF OFF Yes Dropped Dropped 2 1 OFF ON 2nd step drop No Drop...

Page 22: ...ropped 7 ON ON Automatic lift 7 OFF OFF When start switch is depressed work clamp drops sewing starts Lifts in reverse order using work clamp switch Dropped Dropped Work clamp drop sequence selection 0 Left and right simultaneously 1 Left Right 2 Right Left 7 OFF ON Automatic lift 5 ON OFF Automatic lift Dropped 5 ON ON Automatic lift 5 OFF OFF Work clamp switch Left right work clamp Right left wo...

Page 23: ... code will be displayed in the menu display 3 2 Press the or key 4 to switch the error history sequentially 3 When the TEST key 5 is pressed the display will return to the normal display and the sewing machine will change to home position standby Display example Details PROGRAM No display 2 Menu display 3 If there is no error history 000 E Error E110 is displayed first 001 E110 While the key 6 is ...

Page 24: ...ill flash alternately in the PROGRAM No display 2 3 Refer to the input check list for key and sensor responses 4 To return to normal operation turn off the power switch and then turn it back on again Input check list PROGRAM No display Menu display Check code Name Input status Check item and checking method 1 orX H L X axis motor home position sensor signal Move the feed mechanism by hand in the X...

Page 25: ... Work clamp 2nd step 2 pedal specifications Depress the foot switch to the 2nd step 15 Stt on oFF Start switch 2 pedal specifications Depress the foot switch to the 2nd step 16 EMC on on STOP switch Press the STOP switch 17 HEd on oFF Machine head switch Tilt back the machine head 18 EXE on oFF External input error detection IN13 19 CAH on oFF Thread nipper hope position sensor IN14 1 Press the ke...

Page 26: ...tem and checking method 28 Por on oFF Work clamp home position sensor 29 Xor on oFF X feed home position sensor 30 Yor on oFF Y feed home position sensor 31 in6 on oFF Option input IN6 32 in7 on oFF Option input IN7 33 in8 on oFF Option input IN8 34 in9 on oFF Option input IN9 35 in10 on oFF Option input IN10 ...

Page 27: ...lay Check code Name Operating details 51 PM X When the key is pressed the work clamp moves to the left When the key is pressed the work clamp moves to the right 52 PM y When the key is pressed the work clamp moves forward When the key is pressed the work clamp moves back 53 PM F When the key is pressed the work clamp lifts When the key is pressed the work clamp drops 54 CAtH When the key is presse...

Page 28: ...ion solenoid Option compatibility 65 oP1 Turns on option output 1 66 oP2 Turns on option output 2 67 oP3 Turns on option output 3 68 oP4 Turns on option output 4 69 oP5 Turns on option output 5 70 oP6 Turns on option output 6 71 oP7 Turns on option output 7 72 oP8 Turns on option output 8 73 oP9 Turns on option output 9 74 oP10 Turns on option output 10 75 oP11 Turns on option output 11 76 oP17 Tu...

Page 29: ...ay 2 Keep pressing the key 1 until the model name is displayed and the buzzer beeps once 2 The display in the PROGRAM No display 4 switches as follows each time the or key 3 is pressed PROGRAM No display 4 Software 1 Mn Main CPU 2 Mt Motor CPU 3 PL Panel CPU 4 iP Main CPU IPL 5 PG Programmer 3 When the TEST key 5 is pressed the display will return to the normal display and the sewing machine will ...

Page 30: ... set to ON data for older series models program numbers 0 99 can be transferred from a floppy disk to a CF card using a computer and then be read from the CF card In such cases the effective reading mode will be r 1 Option 0 99 100 999 or r9 mode or r1 mode 0 99 100 999 Old model series data range BAS SEW BAS 311G BAS 326G data range ISM SEW Sewing machine internal memory Old model series data cop...

Page 31: ...ot reformat them The recommended CF cards are commercially available ones from SanDisk or HAGIWARA SYS COM CF cards from other manufacturers can be used but different formatting methods may mean that loading from or writing to such cards may not be possible For more information refer to the documentation provided with the CF card This product is compatible with CF cards that have been formatted us...

Page 32: ...g data is read from the CF card 1 w 2 SEd Sewing data is written to the CF card r 3 MEM Memory switch settings are read from the CF card w 4 MEM Memory switch settings are written to the CF card r 5 UPG User programs are read from the CF card w 6 UPG User programs are written to the CF card r 7 SyS Control programs are read from the CF card and used to update the firmware version w 8 LoG Error log...

Page 33: ...l be read at once 3 Loading Press the R W key The buzzer will sound and the selected sewing data will be loaded from the CF card and copied into the sewing machine s internal memory The program numbers that have been read will be displayed in the menu display If there is a large volume of data in the CF card it will take some time for all of it to be read To halt the reading of data press the STOP...

Page 34: ... 0 999 will be written at once 3 Writing Press the R W key The buzzer will sound and the selected sewing data will be copied from the internal memory onto the CF card The program numbers that have been written will appear in the PROGRAM No display If there is a large volume of data in the internal memory it will take some time for all of it to be written To halt the writing of data press the STOP ...

Page 35: ... the process is complete Turn off the power switch remove the CF card and then close the cover of the CF slot 3 8 Writing memory switch data to CF cards 1 Select the w 4 data read write mode 2 Writing Press the R W key The buzzer will sound and the memory switch data will be copied from the internal memory onto the CF card 3 End data read write mode TEST indicator switches off Press the TEST key T...

Page 36: ... the process is complete Turn off the power switch remove the CF card and then close the cover of the CF slot 3 10 Writing user program data to CF cards 1 Select the w 6 data read write mode 2 Writing Press the R W key The buzzer will sound and the user program data will be copied from the internal memory onto the CF card 3 End data read write mode TEST indicator switches off Press the TEST key Tu...

Page 37: ...NOTE Version updating may take about 3 10 minutes The time taken will vary depending on the manufacturer and storage capacity of the CF card being used Never remove the CF card or turn off the power switch while reading of the CF card is in progress Restoring the control program if an error occurs during updating If the version updating did not complete normally such as because of a power outage t...

Page 38: ...ches off Press the TEST key Turn off the power switch remove the CF card and then close the cover of the CF slot 3 13 Reading sewing data from floppy disks 1 Insert the floppy disk into the floppy disk drive 2 Select the r 9 data read write mode 3 Press the R W key Fdd will change to ALL Press the or key to select the program number to be read Program numbers that contain no data will also be disp...

Page 39: ...you then press the RESET key the display will change back to ALL NOTE If there is no data in the selected program number error E421 will be displayed Press the RESET key and then select another program number 5 End data read write mode TEST indicator switches off Press the TEST key Turn off the power and remove the floppy disk 3 14 Writing sewing data to floppy disks 1 Insert the floppy disk into ...

Page 40: ...itch If you then press the RESET key the display will change back to ALL 5 End data read write mode TEST indicator switches off Press the TEST key Turn off the power and remove the floppy disk 3 15 Reading extended option output data from a CF card 1 Select the r 11 data read write mode 2 Loading Press the R W key The buzzer will sound and the extended option output data will be loaded from the CF...

Page 41: ...e TEST key Turn off the power switch remove the CF card and then close the cover of the CF slot 3 17 Reading extended option output data from floppy disks 1 Insert the floppy disk into the floppy disk drive 2 Select the r 13 data read write mode 3 Loading Press the R W key The buzzer will sound and the extended option output data will be loaded from the floppy disk and copied into the sewing machi...

Page 42: ... assy 2 Upper shaft 3 Crank rod assy 4 Rock gear 5 Lower gear 6 Lower shaft 7 Driver 8 Shuttle hook 1 Motor assy 2 Upper shaft 3 Thread take up crank 4 Needle bar crank 5 Needle bar connecting rod 5 Thread take up lever assy 6 Needle bar clamp 6 Thread take up support 7 Needle bar 5042Q 5041Q The mechanisms operate in the order of the numbers given in the illustrations ...

Page 43: ...mp 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 assy 5043Q 9 Slider 10 Work clamp lifter lever 11 Connecting rod 12 Connecting link 13 Work clamp lifter lever 14 Work clamp 5044Q ...

Page 44: ...nder 2 Work clamp lifter lever 3 Work clamp lifter lever 4 Work clamp 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 link B 10 Presser bar clamp 11 Presser bar 12 Presser foot 5045Q 5046Q ...

Page 45: ...ot stroke mechanism 1 Motor assy 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 link A 8 Stepping clamp link A 9 Stepping clamp link B 10 Presser bar clamp 11 Presser bar 12 Presser foot 5047Q ...

Page 46: ... Sewing patterns are created through combinations of X and Y movements 1 X feed motor assy 2 Gear 3 X feed gear 4 Y ball spline 5 X GT belt 6 Feed bracket X 1 Y feed motor L assy 2 Gear 3 Y feed gear 4 Y GT belt 5 Feed bracket assy 5052Q 5053Q Y direction X direction ...

Page 47: ...solenoid 2 Solenoid lever 3 Pushing lever 4 Driving lever 5 Thread trimmer collar 6 Thread trimmer cam 7 Thread trimmer rod V 8 Thread trimmer lever V 9 Thread trimmer lever H 10 Thread trimmer rod H 11 Movable knife lever 12 Movable knife connecting plate 13 Movable knife 14 Fixed knife 5048Q ...

Page 48: ...d wiper mechanism 1 Tension release solenoid 2 Bolt 3 Tension release bar 4 Tension release pin 5049Q 1 Thread wiper solenoid assy 2 Thread wiper rod 3 Thread wiper crank assy 4 Wiper When the thread wiper solenoid assembly is turned off the wiper operates in the opposite direction 5050Q ...

Page 49: ...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 Use only the proper replacement parts as specified by Brother 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 Any p...

Page 50: ...26G 43 5 2 Thread wiper mechanism 1 Thread wiper solenoid harness Pull out 2 STOP switch harness Pull out 3 Bolt 4 Plain washer 5 Removed washer Assemble 6 Removed bolt Assemble 7 Bolts with washer 2 pcs 8 Thread wiper unit 5090Q ...

Page 51: ...EMBLY BAS 311G BAS 326G 44 5 3 Work clamp arm mechanism 1 Set screw 2 Needle 3 Needle bar thread guide 4 Bolts 4 pcs 5 Work clamp assy 6 Bolts with washer 2pcs 7 Feed plate Pneumatic specifications 5055Q 5054Q ...

Page 52: ...ide 4 Presser bar spring 5 Presser bar spring collar 6 Screw 7 Shoulder screw 8 Screw 9 Plain washers 2 pcs 10 Finger guard 5091Q 11 Presser foot 12 Bolt Loosen 13 Presser bar Pull downward from presser bar clamp 14 Set screw Loosen 15 Link shaft Pull out 16 Washer 17 Stepping clamp lifter link Remove as unit 18 Presser bar 19 Bolt Loosen 20 Stepping clamp arm F ...

Page 53: ...upport shaft assy 9 Thread take up support 10 Screw Loosen Do not remove the slide block guide if possible to prevent the machine from overheating due to needle bar rubbing Left hand thread 11 Needle bar connecting rod 12 Needle bearing 13 Rubber cap 14 Set screws 3 pcs Loosen 15 Needle bar crank 16 Needle bearing 17 Thread take up lever assy 18 Washer 19 Bolts 2 pcs 20 Slide block guide 5092Q 509...

Page 54: ...ews 2 pcs Loosen 15 Set screws 2 pcs Loosen 16 Set screws 2 pcs Loosen 17 Set screws 2 pcs Loosen 18 Set screws 2 pcs Loosen 19 Screws 3 pcs Loosen 20 Fries wheels 2 pcs 21 Bolts 4 pcs Loosen 22 Motor assy 23 Thread trimmer cam 24 Joint assy 25 Upper shaft 26 Pulley gear R 27 Bobbin winder driving wheel 28 Stepping clamp cam assy 29 Set screw Loosen 30 Pulley assy If the motor assembly cannot be r...

Page 55: ... Crank rod Lower part Remove the rock gear and the crank rod together as a single unit 5098Q 1 Bolt Loosen 2 Driver 3 Retaining ring E 4 Set screw Loosen 5 Adjusting stud Pull out 6 Lower shaft assy Pull out from the rear of the machine 7 Adjusting stud Pull out 8 Set screw Loosen 9 Screw Loosen 10 Shuttle race base assy 5097Q If the adjusting stud will not pull out insert a M3 screw into the tap ...

Page 56: ...Feed covers 1 Bolts with washer 10 pcs 2 Auxiliary plate 3 Screws 4 pcs 4 Bellow assy 5 Screws 2 pcs 6 Cover connecting plate 7 Screws 16 pcs 8 Cover rails 2 pcs 9 Inside covers 2 pcs 10 Outside covers 2 pcs 11 Fixed covers 2 pcs 5101Q 5102Q ...

Page 57: ...d motor L assy 8 Set screws 2 pcs Loosen 9 Y feed gear 10 Retaining ring E 11 Set screws 2 pcs Loosen 12 Y pulley driving shaft 13 Y pulley assy 14 Y pulley collar 15 Ball bearings 2 pcs 16 Bolts 4 pcs 17 Bolts 4 pcs 18 Y belt presser plate 19 Y belt support plate 20 Set screws 2 pcs Loosen 21 Y pulley bracket 22 Y pulley fulcrum shaft 23 Y pulley assy 24 Y GT belt 25 Ball bearings 2 pcs 5103Q 510...

Page 58: ...Loosen 29 X feed gear 30 Rubber cap 31 Y ball spline 32 Retaining ring C 33 Plain washer 34 Ball bearing 35 Ball bearings 2 pcs 36 Bolts 4 pcs 37 Washers 4 pcs 38 Bolts 8 pcs 39 Spring washers 8 pcs 40 Plain washers 8 pcs 41 Y LM guides 2 pcs 42 Flat screws 16 pcs 43 Y LM spacers 2 pcs 5117Q 5106Q 5107Q ...

Page 59: ... Feed bracket X 47 Bolts 16 pcs 48 X LM guide 2 pcs 49 Bolts 2 pcs 50 X belt holder 51 X belt holder plate 52 Bolts 2 pcs 53 Plain washers 2 pcs 54 Set screws 2 pcs Loosen 55 X pulley fulcrum shaft 56 X pulley bracket 57 X right pulley assy 58 Plain washer 59 X GT belt 5118Q ...

Page 60: ...pulse motor Disconnect the harness 8 Set screws 2 pcs Loosen 9 Work clamp driving gear 10 Bolts 2 pcs 11 Work clamp motor plate 12 Set screw Loosen 13 Work clamp lever shaft 14 Work clamp driving lever 15 Washer 16 Stepping foot driving lever 17 Set screws 2 pcs Loosen 18 Set screws 2 pcs Loosen 19 Screw 20 Plain washer 21 Retaining ring C 22 Work clamp fulcrum shaft 23 Work clamp cam gear 24 Work...

Page 61: ... 13 Set screw Loosen 14 Set screw Loosen 15 Screw 16 Plain washer 17 Retaining ring C 18 Work clamp fulcrum shaft 19 Work clamp cam gear 20 Ball bearings 2 pcs 1 Shoulder screw 2 Bolts 4 pcs 3 Work clamp pulse motor Disconnect the harness 4 Set screws 2 pcs Loosen 5 Work clamp driving gear 6 Bolts 2 pcs 7 Work clamp motor plate 8 Set screws 2 pcs Loosen 9 Set screw 10 Work clamp lever shaft Note H...

Page 62: ...r screws 2 pcs 5 O rings 2 pcs 6 Solenoid cover 7 Tension release solenoid 8 Bolts 2 pcs 9 Spring washers 2 pcs 10 Plain washers 2 pcs 11 Solenoid setting plate 12 Bolt 13 Nut 14 Plain washer 15 Solenoid cushion 16 Tension release bar 17 Plain washer 18 Spring 19 Retaining ring E 5111Q 1 Flat screw 2 Set screw Loosen 3 Stepping clamp lifter shaft Pull out 4 Stepping clamp lifter Pull forward 5112Q...

Page 63: ...cushion 10 Bolts 2 pcs 11 Spring washers 2 pcs 23 Nut 24 Shoulder screw B 25 Driving lever 26 Set screw 27 Retaining ring E 28 Collar shaft 29 Thread trimmer collar 30 Screws 2 pcs 31 Flat screws 2 pcs 32 Needle plate 12 Plain washers 2 pcs 13 Solenoid setting plate 14 Thread trimmer solenoid 15 Shoulder screw 16 Pushing lever 17 Nut 18 Set screw 19 Set screw 20 Guide shaft 21 Spring 22 Cushion 51...

Page 64: ...45 Bolt 46 Spring washer 47 Plain washer 48 Nut 49 Shoulder screw B 50 Thread trimmer rod V 51 Nut 52 Shoulder screw B 53 Set screws 2 pcs Loosen 54 Thread trimmer lever shaft 55 Spacers 2 pcs 56 Retaining ring C 1 Bobbin case assy 2 Shuttle race base setting claw Open to right and left 3 Shuttle race base 4 Shuttle hook 5115Q 5116Q 57 Thread trimmer lever V 58 Thread trimmer lever H 59 Set screw ...

Page 65: ...ead trimmer lever shaft 7 Retaining ring C 8 Spacers 2 pcs When the ball joint assembly of thread trimmer rod H has been disassembled assemble it so that the distance between the centers of the holes is 376 0 5 mm Tighten the set screw on the screw flat while lightly pressing the thread trimmer lever shaft Tighten the set screw on the screw flat while lightly pressing the movable knife lever shaft...

Page 66: ...lenoid lever 36 Set screw 37 Bolts with washer 2 pcs 38 Pushing lever 39 Shoulder screw 40 Set screw 41 Nut 42 Connecting plate 43 Shoulder screw 44 Shoulder screw B 45 Nut 46 Plain washer 47 Spring washer 48 Bolt When the ball joint assembly of thread trimmer rod V has been disassembled assemble it so that the distance between the centers of the holes is 287 5 0 5 mm 4615Q 4853Q 5136Q Tighten the...

Page 67: ...ws 2 pcs 17 Tension release pin 18 Tension bracket 19 Set screw 5139Q Adjust the thread take up spring height while referring to 7 2 Standard thread tension Adjust while referring to 7 18 Adjusting the tension release amount 1 Stepping clamp lifter Insert from the front 2 Stepping clamp lifter shaft 3 Set screw 4 Flat screw Screw the stepping clamp lifter rod in as far as it will go then turn it b...

Page 68: ...rew stop and then tighten the screw so that there is no play in the work clamp driving lever and the stepping foot driving lever Check that the work clamp driving lever and stepping foot driving lever turn smoothly 1 Set the work clamp cam gear so that there is no clearance between it and the ball bearing in the shaft direction and then align the V groove in the work clamp fulcrum shaft with the t...

Page 69: ...n the work clamp lifter lever Check that the work clamp lifter lever moves smoothly Place the slide block onto the pin of the work clamp lifter lever The pin and the surface of the slide block should be aligned While aligning the slide block with the groove in the work clamp lifter plate assembly pass the work clamp lever shaft B through the work clamp lifter lever NOTE When the work clamp lifter ...

Page 70: ...the arm hole as shown in the illustration 29 Work clamp pulse motor 30 Work clamp driving gear 31 Set screws 2 pcs 32 Work clamp motor plate 33 Bolts 4 pcs 34 Bolts 2 pcs 35 Work clamp spring 2 Install the work clamp pulse motor to the work clamp motor plate with the four bolts so that the motor connector is facing downward 3 Align the index marks on the work clamp cam gear and the work clamp driv...

Page 71: ...r 10 Set screw collar 11 Work clamp lever shaft 12 Set screw 13 Set screws 2 pcs 14 Shoulder screw Align the screw stop and then tighten the screw so that there is no play in the stepping foot driving lever and the set screw collar Check that the stepping foot driving lever turns smoothly Set the work clamp cam gear so that there is no clearance between it and the ball bearing in the shaft directi...

Page 72: ...he two set screws 15 Work clamp pulse motor 16 Work clamp driving gear 17 Set screws 2 pcs 18 Work clamp motor plate 19 Bolts 4 pcs 20 Bolts 2 pcs 2 Install the work clamp pulse motor to the work clamp motor plate with the four bolts so that the motor connector is facing downward 3 Align the index marks on the work clamp cam gear and the work clamp driving gear and then install the work clamp moto...

Page 73: ...ley fulcrum shaft 7 Set screws 2 pcs 8 X feed gear 9 Ball bearings 2 pcs 10 Y ball spline 11 Set screws 2 pcs 12 Ball bearing 13 Plain washer 14 Retaining ring C 15 Retaining rings C 2 pcs 16 Plain washers 2 pcs 17 Bolts 2 pcs Temporarily tighten 5173Q 5174Q NOTE Align the ridges in the packing of the nut with the grooves in the shaft when inserting the shaft If they are not aligned the steel ball...

Page 74: ...ing pins of the feed bracket and then tighten the bolts Engage 18 Y LM spacers 2 pcs 19 Flat screws 16 pcs 20 Y LM guides 2 pcs 21 Plain washers 8 pcs 22 Spring washers 8 pcs 23 Bolts 8 pcs 24 X LM guide 2 pcs 25 Bolts 8 pcs Install the X belt holder in between the X LM guides as shown in the diagram 5215Q Provisionally tighten the bolts so that their heads do not protrude from the top of the X LM...

Page 75: ...lts 4 pcs 51 Bolts 4 pcs 52 Bolts with washers 2 pcs Temporarily tighten Engage Place the Y LM guide against the wall of the bed and then tighten the bolts 5179Q 41 Bolts 4 pcs 42 Y pulley assy 43 Y pulley collar 44 Ball bearings 2 pcs 45 Y feed gear 46 Y pulley driving shaft 47 Retaining ring E 48 Set screws 4 pcs Provisionally tighten the bolts so that their heads do not protrude from the top of...

Page 76: ... Temporarily tighten 55 Y feed motor L assy 56 Bolts with washer 3 pcs Temporarily tighten 57 Y belt cover 58 Screws with washer 4 pcs 59 Oil cover 60 Screws 5 pcs 61 Flat screws 3 pcs 5181Q 5180Q Install so that the backlash is 0 01 0 05 Install so that the backlash is 0 01 0 05 ...

Page 77: ...djust the belt tension to the following value For a new belt 290 330 N For a reused belt 220 250 N 4 Tighten the two bolts 3 and then remove the M5x25 screw 5 Measure the belt tension once more and check that it is at the following value For a new belt 400 440 N For a reused belt 320 350 N Be sure to use a belt tension gauge to measure the belt tension and measure from the bottom of the belt The b...

Page 78: ...djust the belt tension to the following value For a new belt 250 320 N For a reused belt 160 240 N 4 Tighten the two bolts 3 and then remove the M5x25 screw 5 Measure the belt tension once more and check that it is at the following value For a new belt 500 600 N For a reused belt 400 480 N Be sure to use a belt tension gauge to measure the belt tension and measure from the bottom of the belt The b...

Page 79: ...her in the X direction 2 Tighten the eight bolts 2 at the place where the load is 29 59 N variation within 20 N Right Y LM guide installation 1 With tension applied to the Y GT belt and the Y feed motor L assembly installed use a push pull tension gauge to push the X feed bracket 1 from one edge to the other in the Y direction 2 Tighten the two bolts 2 at the place where the load is 39 78 N variat...

Page 80: ...crews M4X4 2 pcs 14 Bellow assy 15 Screws 4 pcs 1 Place the inside cover into the groove in the X feed bracket Apply grease MOLYKOTE LONGTERM W2 manufactured by Dow Corning or equivalent to the areas indicated by the white arrows 2 Set so that the rubber part of the inside cover is on the outside of the rubber part of the outside cover and so that the stopper of the inside cover is on the inside o...

Page 81: ...20 2 X Y feed home position 16 Auxiliary plate brackets 6 pcs 17 Bolts with washer 6 pcs 18 Auxiliary plate 19 Support plate guides 2 pcs 20 Auxiliary plate cushions 10 pcs 21 Screws 10 pcs Tighten to 0 5 N m 22 Nuts 10 pcs 23 Bolts with washer 4 pcs 5193Q 5192Q 5191Q Needle plate ...

Page 82: ...e Threebond 1324 or similar to the outside of the bearing of joint assy 1 Tighten the screw of the thread take up crank so that it is aligned with the upper shaft hole 2 While pressing the thread take up crank so that there is no play in it tighten the two set screws 8 Apply adhesive Threebond 1401 or similar to the thread section of the screw Install the bobbin winder driving wheel so that it is ...

Page 83: ...sy 15 Bolts 4 pcs 16 Fries wheels 2 pcs 17 Screws 3 pcs 18 Set screws 2 pcs 19 Thread trimmer cam 20 Set screws 2 pcs 21 Set screws 2 pcs 22 Set screws 2 pcs Temporarily tighten 23 Pulley assy 24 Set screw 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 s...

Page 84: ...13 Thread take up support shaft assy 14 Set screws 2 pcs 15 Rubber caps 2 pcs 16 Rubber cap 17 Slide block Left hand thread 5142Q Set so that this hole faces upward and then push in gently while tightening the set screw to install Inside hole While gently pushing the needle bar crank in the shaft direction align the set screw with the screw stop and then tighten the set screw After securing the ne...

Page 85: ...e second lowest reference line on the needle bar 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 raise the needle bar from its lowest position and then set the cut section so that it is facing forward and tighten the screw 4647Q Needle bar bush 5143Q Cut section Inside hole ...

Page 86: ...ghten 1 With the needle bar lowered approximately 6 5 mm from its highest position set the stepping clamp arm F to the position of the straight line in the illustration 2 Place a bushing in between stepping clamp arm F and stepping clamp arm R so that there is no play and then tighten the bolt At the needle bar timing position align the index marks of the stepping clamp cam and the stepping clamp ...

Page 87: ...Lower the needle bar approximately 6 5 mm from its highest position 4 Set the height of the presser bar 6 to 41 mm above the needle plate align the center of the presser foot 7 and the needle hole and then tighten the bolt 8 5 Set the height of the presser foot 7 to 22 mm above the needle plate and then tighten the screw 9 6 Turn the work clamp cam gear 1 to move the stepping foot driving lever 2 ...

Page 88: ...ile turning the machine pulley move the rock gear back and forth to the position where it turns smoothly Place set screw collar R against the edge of the bed and tighten the set screw 5145Q 1 Shuttle race base assy 2 Set screw 3 Set screw 4 Adjusting stud Tighten the set screw until the head of the screw is flush with the edge of the bed Refer to 7 8 Rotary hook lubrication amount 5144Q Adjust whi...

Page 89: ... Needle bearing 20 Crank rod Upper part Align the mating mark 21 Bolts 2 pcs 22 Crank cover 23 Screws 3 pcs Insert the crank rod lower part into the crank of the upper shaft and then align the mating mark on the crank rod upper part from above and gently tighten the bolts Check that the machine pulley turns smoothly 5146Q 5148Q Mating mark 5147Q Provisionally tighten the bolt while lightly pressin...

Page 90: ...de 2 Needle 3 Set screw 4 Shuttle hook 5 Shuttle race base 6 Shuttle race base setting claw Close 7 Bobbin 8 Bobbin case 1 Fixed knife 2 Plain washers 2 pcs 3 Screws 2 pcs 4 Movable knife spacer 5 Movable knife assy 6 Movable knife collar 7 Thrust washer 8 Movable knife shoulder screw 9 Needle plate 10 Screws 2 pcs 11 Flat screws 2 pcs 5150Q 5152Q 5151Q Movable knife connecting plate Insert the pi...

Page 91: ...lain washers 4 pcs 5 Spring washers 4 pcs 6 Bolts 4 pcs After installing carry out test feeding and check that the needle hole is inside the work clamp and the feed plate frame If the needle hole is not inside the frame adjust the position of the work clamp arm assembly and feed plate Pneumatic specifications 5200Q 5201Q ...

Page 92: ...umatic specifications 1 Raise the work clamp arm electronically 2 Loosen the bolt 7 lift the work clamp lifter lever 8 by hand to its maximum height and then tighten the bolt 7 3 Loosen the nut 9 of the air cylinder 4 Turn the shaft of the air cylinder until the work clamp 10 is 30 mm above the top of the needle plate and then tighten the nut 9 Work clamp adjustment 1 Loosen the bolt 11 2 Lower th...

Page 93: ...Remove 4 Plain washer Remove 5 Removed plain washer 6 Removed bolt 7 STOP switch harness 8 Thread wiper solenoid harness 5153Q Adjust the thread wiper after installing Refer to 7 11 Adjusting the thread wiper Align the thread wiper shaft bracket and the bottom of the arm and then tighten the two bolts with washer ...

Page 94: ...tle race cover assy 2 Screws 2 pcs 3 Face plate assy 4 Screws 3 pcs 5 Eye guard assy 6 Plain washers 2 pcs 7 Screws 2 pcs 8 Motor cover L 9 Screws 4 pcs 10 Motor cover R 11 Screws 4 pcs 12 Motor cover 13 Screws 4 pcs 14 Top cover 15 Screws 6 pcs 5154Q ...

Page 95: ...ine head with both hands when tilting it back or returning it to its original position In addition do not apply excessive force when tilting back the machine head The sewing machine may become unbalanced and fall down and serious injury or damage to the sewing machine may result If the power switch needs to be left on when carrying out some adjustment be extremely careful to observe all safety pre...

Page 96: ... 50 or similar Lower thread 20 or similar 50 or similar Upper thread tension N 1 4 1 8 0 8 1 2 Lower thread tension N 0 2 0 3 Thread take up spring height mm 7 10 Thread take up spring tension N 0 6 1 2 0 2 0 5 Pre tension N 0 1 0 6 0 1 0 3 Needle DP x 17 19 DP x 5 16 Normal sewing speed 2 000 rpm 2 000 rpm 7 2 1 Upper and lower thread tension 5155Q 4661Q ...

Page 97: ...ngth will be uneven after thread trimming 7 2 3 Arm thread guide R 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 thread take up amount will become greater When sewing light material move arm thread guide R 1 to the right ...

Page 98: ... needle bar bush 1 and then loosen the bolt 2 and move the driver 3 so that the tip of the rotary hook is aligned with the center of the needle If using a DP X 5 needle use the second reference line from the top of the needle bar reference line b 7 5 Adjusting the driver needle guard Turn the machine pulley to align the tip of the rotary hook with the center of the needle and then loosen the set s...

Page 99: ...TE If the shuttle race 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 7 8 Rotary hook lubrication amount The optimum position is when the head of the set screw 1 is aligned with the edge of the bed The rota...

Page 100: ...ad trimmer cam 4 turn the pulley 1 by hand to set the driving lever 5 to the reverse position when the thread take up 6 is close to its lowest position 4 Loosen the bolt 7 5 Move the thread trimming rod H 9 forward or back to adjust so that the distance from the ridge line on the right side of the needle plate to the ridge line on the movable knife 8 is 9 5 9 9 mm 6 After tightening the bolt 7 che...

Page 101: ...n 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 5 by hand toward the thread trimmer cam until the collar 3 touches the groove of the thread trimmer cam 4 and then check that the driving lever 5 returns smoothly to its original position when it is released 10 Check that there is a gap of about 0 1 mm between the outsi...

Page 102: ...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 thinner movable knife spacer If the knife pressure is too ...

Page 103: ...itch lower the work clamp before depressing the start switch After the home position is detected and the work clamp drops the feed mechanism will move to the feed plate installation position and then the work clamp will rise 3 Use a 2 mm diameter pin to align the holes in the X feed bracket 1 and the needle plate 2 with the two holes in the feed plate 3 and then tighten the two bolts 4 NOTE Instal...

Page 104: ...ance from the thread wiper 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 7 12 Presser foot installation position Install the presser foot 1 with the screw 2 so that the distance fro...

Page 105: ...e 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 followin...

Page 106: ...ing a DP x 5 needle align with the second reference line from the top reference line b 4 Open the top cover and loosen the two set screws 6 5 Align the index marks on the stepping clamp cam 7 and the stepping clamp connecting rod 4 and then tighten the set screws 6 Check the following after changing the intermittent stroke 1 With the intermittent presser foot 1 lowered turn the pulley to move the ...

Page 107: ...he work 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 7 15 Adjusting the air pressure pneumatic specifications 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 handle 2 downward to lock it If water has collect...

Page 108: ...e two bolts 3 of the X pulley bracket 2 and then provisionally tighten them at 19 6 mN m 3 Pass the M5x25 screw through the countersunk hole in the side of the bed and screw it into the tap hold in the X pulley bracket 2 Then adjust the belt tension to 220 250 N 4 Tighten the two bolts 3 and then remove the M5x25 screw 5 Measure the belt tension once more and check that it is 320 350 N Be sure to ...

Page 109: ...t The belt tension gauge should be set to measure a unit weight of 0 04 kg m a belt width of 30 mm and a span length of 370 mm The recommended belt tension gauge to use is the Dr TENSION TYPE ll manufactured by MITSUBOSHI BELTING LTD 7 18 Adjusting the tension release amount 1 Loosen the nut 4 and turn the bolt 2 to adjust so that the distance between the tip of the bolt 2 and the solenoid setting...

Page 110: ...6 5 Place set screw collar R 7 against the edge of the bed so that the pulley can turn easily If the pulley cannot turn easily loosen the set screw 8 and turn the pulley while moving the rock gear 9 back and forth At the position where the pulley moves freely place set screw collar R 7 against the edge of the bed and tighten the set screw 8 6 Turn the rock gear shaft 10 to adjust the play at the e...

Page 111: ...red home position If you press the RESET key for 2 seconds or more at this time the offset value will be reset to 0 4 Solenoid specifications Touch the bottom of the work clamp lifter plate and check the position where it starts to lower Press the or key to change the offset value 999 to 999 so that the work clamp lifter plate 1 moves to the position where it starts to lower The work clamp lifter ...

Page 112: ... 20 2 X Y feed home position 1 Turn the pulley to set the needle to the needle up stop position 2 TEST indicator and X SCALE indicator light While pressing the keys simultaneously turn on the power switch Keep pressing the keys until the model name is displayed and the buzzer beeps once orG will flash in the PROGRAM No display and the offset value default 0 will be displayed in the menu display 3 ...

Page 113: ... pins shaped like a needle 6 Press the RESET key The feed mechanism will move to the home position Check the home position Once the home position is correctly aligned remove the home position reference plate 3 7 Repeat steps 5 and 6 to adjust the home position 8 End adjustment mode TEST indicator switches off Press the TEST key The display will return to the normal display and the sewing machine w...

Page 114: ...en install the rubber cap 2 6 Turn the machine pulley to lower the needle bar 1 from its highest position to height H Needle DP x 17 DP x 5 H 55 5 mm 50 4 mm h 18 0 mm 12 9 mm 7 While pressing the key 4 turn on the power switch Keep pressing the key 4 until the model name is displayed and the buzzer beeps once 8 Press the key 4 or key 5 to select check code 8 Refer to 2 8 Input checking method 9 R...

Page 115: ...the factory defaults or after adjusting the needle up stop home position Adjustment method 1 TEST indicator and SPEED indicator light While pressing the keys simultaneously turn on the power switch Keep pressing the keys until the model name is displayed and the buzzer beeps once orG will flash in the PROGRAM No display and the offset value will be displayed in the menu display 2 Depress the foot ...

Page 116: ...on is normal and that error E110 is not generated 4 Depress the foot switch to the 2nd step If using a two pedal foot switch lower the work clamp before depressing the start switch The upper shaft will move and stop at the offset value that has been set 5 End adjustment mode TEST indicator switches off Press the TEST key The offset value will be memorized and the sewing machine will switch to home...

Page 117: ...ontrol box Replacing fuses Inserting and disconnecting connectors Measuring resistance values Any other tasks that may involve touching components inside the control box Some inspection items require the control box to be open when the power is turned on and voltages are measured At such times be extremely careful never to touch anywhere other than the specified locations In addition note that hig...

Page 118: ...The filters at the air intake slots in the cover and base plate should be cleaned about once a month Conversion transformer Two types are used depending on the power supply voltage specifications This breaks down the power supply voltage into the voltages that are required for control operations NF P C board European destinations only This eliminates the electrical interference that is generated b...

Page 119: ...isplayed Work clamp does not operate and E300 is displayed F3 Fuse 6AFB Glass tube fuse 6A 250V SA3759 001 Thread trimming solenoid or digital tension tension release solenoid does not operate and thread trimming or thread tightening problems occur F4 Fuse 3AFB Glass tube fuse 3A 250V 616167 001 Communication problem with PMD P C board and E403 is displayed F5 Fuse 3AFB Glass tube fuse 3A 250V 616...

Page 120: ...roblems are often caused by connectors 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 8 4 1 Connector positions Main P C board 5072Q ...

Page 121: ...8 ELECTRICAL MECHANISM 114 BAS 311G BAS 326G PMD P C board Power supply motor P C board 4592Q 4593Q ...

Page 122: ...8 ELECTRICAL MECHANISM 115 BAS 311G BAS 326G Panel P C board 4594Q ...

Page 123: ...iefly but does not detect the home position correctly E200 or E210 is displayed Problems with feed mechanism moving forward and back E210 or E211 is displayed Problems with feed mechanism moving to the left and right E200 or E201 is displayed Feed motor does not operate E200 is displayed Work clamp mechanism Trouble symptom Connector No and position The work clamp pulse motor operates but the home...

Page 124: ... No error displayed Digital tension specifications Analog tension does not operate No error displayed Analog tension specifications Sewing operations Trouble symptom Connector No and position Power indicator does not illuminate and sewing machine does not operate Operation is unstable E403 is displayed when the power is turned on and the sewing machine does not start 4713Q 4714Q 5244Q 4717Q 5243Q ...

Page 125: ...es not start when foot switch is depressed Single pedal Work clamp drops when depressed to the 1st step Home position is detected and sewing machine starts when depressed to the 2nd step 2 pedal Work clamp drops when work clamp switch left is depressed Home position is detected and sewing machine starts when start switch right is depressed After the power is turned on E055 is displayed After the p...

Page 126: ...AS 326G 8 5 Troubleshooting 8 5 1 Diagnosis flowchart Description of symbols Manual procedure Setting and status Switch operation Continued on previous next page Judgment OFF Power switch OFF Problem symbol in the 8 5 2 Remedy lists 5250Q ...

Page 127: ...8 ELECTRICAL MECHANISM 120 BAS 311G BAS 326G 5251Q ...

Page 128: ...8 ELECTRICAL MECHANISM 121 BAS 311G BAS 326G 5252Q ...

Page 129: ...8 ELECTRICAL MECHANISM 122 BAS 311G BAS 326G 5253Q ...

Page 130: ... touching components inside the control box Injury The fan inside the control box turns while the power is turned on so be careful not to get anything caught in it Be careful not to touch metallic objects such as the heat sink and cover when connecting and disconnecting connectors and making measurements 2 When replacing the fuses be sure to use a fuse with the same material and rating Before carr...

Page 131: ...ications 1 OK if there is continuity between pins 1 8 2 8 3 8 4 8 5 8 and 6 8 of the 8 pin connector coming out from the transformer Fig A 2 OK if there is continuity between pins 1 2 3 4 and 5 6 of the 6 pin connector coming out from the transformer Fig C 3 OK if there is continuity between pins 1 2 and 4 5 of the 5 pin connector coming out from the transformer Fig D For 380V 400V specifications ...

Page 132: ...connect connector P17 M MOTOR of the main P C board turn on the power and then measure the voltages between the pins at the cord side connector OK if the voltages are as shown in the table below After measuring turn off the power wait 5 minutes or more and then insert P14 Power supply motor P C board 6 Malfunction of main P C board With connector P17 M MOTOR inserted into the main P C board turn o...

Page 133: ...arness 4 If E403 is displayed there is a poor connection between the main P C board and the PMD P C board 1 Check that connector P17 M MOTOR is inserted into the main P C board and that connector P6 MAIN is inserted into the power supply motor P C board 2 Check if there is a harness short circuit Harness Power supply motor P C board Main P C board 5 If E401 is displayed there is a poor connection ...

Page 134: ... measure the voltages between pins 2 3 at the cord side connector No 2 No 3 OK if the voltage is approximately 2 V at neutral and approximately 4 V when the foot switch is depressed as far as it will go Treadle unit 2 Malfunction of two pedal foot switch Disconnect connector P6 FOOT from the main P C board and check the continuity between pins 5 6 7 8 and 8 9 at the cord side connector OK if norma...

Page 135: ...is a malfunction of the pulse motor or cord 1 Disconnect connector P10 XPM from the PMD P C board and measure the resistance between pins 1 2 and 3 4 at the cord side connector OK if 2 3 Ω After measuring insert P10 2 If 1 is OK there is a malfunction of the PMD P C board Pulse motor assembly PMD P C board Problem 8 When the foot switch is depressed an error code is displayed Cause Inspection Reme...

Page 136: ...rry out the inspections in 2 Fuse 6A 250V 2 If the work clamp does not operate and E300 is displayed there is a malfunction of the PMD P C board or of the power supply motor P C board 1 Disconnect connector P9 POWER1 from the PMD P C board and measure the resistance between pins 1 2 at connector P9 OK if Ω if 0 Ω there is a malfunction of the PMD P C board 2 Measure the resistance between the fuse...

Page 137: ...Refer to 7 20 Adjusting the home position Work clamp home position sensor 5 If the work clamp does not move and E300 is displayed there is a malfunction of the pulse motor or cord 1 Disconnect connector P3 PPM from the PMD P C board and measure the resistance between pins 1 2 and 3 4 at the cord side connector OK if 2 3 Ω After measuring insert P3 2 If 1 is OK there is a malfunction of the PMD P C...

Page 138: ...rd Problem 14 The feed mechanism does not move one stitch at a time during test feed Cause Inspection Remedy Adjustment Replacement if a malfunction 1 Malfunction of foot switch or cord Refer to inspection 5 2 Incorrect memory switch setting 1 Set memory switch No 200 to OFF 2 Set memory switch No 252 to OFF Problem 15 Feed mechanism does not move fast during test feed Cause Inspection Remedy Adju...

Page 139: ... 2 of the cord side connector OK if approx 16 V After measuring turn off the power wait 5 minutes or more and then insert P2 5 Check that connector P1 MAIN is inserted into the PMD P C board PMD P C board or power supply motor P C board 3 If the presser foot moves slightly and then E300 is displayed there is a malfunction of the encoder 1 Check that connector P5 P ENC is inserted into the main P C...

Page 140: ...Replacement if a malfunction 1 Malfunction of sewing machine motor cord Check connector P4 UVW of the power supply motor P C board and the sewing machine motor connector Motor cable 2 If the fuse F1 on the power supply motor P C board is blown there is a malfunction of the main P C board 1 If the fuse F1 is blown check the resistance values between all pins of the connector P4 UVW and the pins of ...

Page 141: ...ground wire is connected to a secure ground and that there is no equipment nearby that is generating strong electrical interference 7 If E121 is displayed when the sewing machine stops Check if the thread trimming solenoid is operating Adjust the thread trimming mechanism Motor assembly CCD 430D 2 If E150 is displayed after the sewing machine operates the motor is abnormally overheating 1 Turn off...

Page 142: ...ins 3 6 of the cord side connector OK if 6 8 Ω Thread trimming solenoid 4 Malfunction of tension release solenoid digital tension Disconnect connector P7 SOL2 from the PMD P C board and measure the resistance between pins 1 2 of the cord side connector OK if 6 8 Ω Tension release solenoid digital tension solenoid 5 Malfunction of PMD P C board 1 With connector P6 SOL1 connected to the PMD P C boar...

Page 143: ...onnector P6 SOL1 connected to the PMD P C board turn on the power and carry out sewing and measure the voltage between pins 2 5 of connector P6 SOL1 OK if voltage is output momentarily at the sewing end PMD P C board Problem 23 Needle does not stop in the up position E110 is displayed Cause Inspection Remedy Adjustment Replacement if a malfunction 1 Incorrect adjustment Adjust while referring to 7...

Page 144: ...E025 Foot switch is depressed to the 2nd step If using a two pedal foot switch the power was turned on while the start switch was still depressed or the start switch was pressed without the work clamp being lowered Turn off the power and check the foot switch E035 Foot switch is depressed to the 1st step Work clamp switch if using a two pedal foot switch Turn off the power and check the foot switc...

Page 145: ... data with a small number of stitches 15 stitches or less is sewn repeatedly short cycle operation the upper shaft motor may overheat and the E150 error code may be generated Feed mechanism related errors Code Cause and remedy E200 X feed motor home position cannot be detected Problem with X feed motor or poor X home position sensor connection Turn off the power and then check that connector P10 o...

Page 146: ...oppy disk contains data with this program number E422 Error occurred while reading the CF card or floppy disk Check the data on the CF card or floppy disk E424 Insufficient free space on CF card Use a different CF card E425 Error occurred while writing to the CF card or floppy disk Use the specified type of CF card Check if the floppy disk is write protected and if it has enough free space E426 R ...

Page 147: ...per thread trailing length is too long Turn off the power and then clean underneath the needle plate to remove any dust and thread scraps Check that connector P10 on the main P C board is properly connected P C board related errors Code Cause and remedy E700 Abnormal rise in power supply voltage Turn off the power and check the input voltage E701 Abnormal rise in sewing machine motor drive voltage...

Page 148: ...e work clamp lift amount setting Instruction manual Work clamp lift amount is incorrect Work clamp arm lever position is incorrect Pneumatic specifications Adjust the position of the work clamp arm lever P 100 Work clamp arm stopper position is incorrect Solenoid specifications Adjust the position of the stopper P 85 Work clamp does not lift to the maximum height Cylinder joint position is incorre...

Page 149: ...ce between needle and rotary hook tip is too great Adjust the needle clearance P 92 Needle and rotary hook timing is incorrect Adjust the needle bar lift amount P 91 The driver is covering the needle more than necessary Adjust the driver needle guard P 91 Needle is bent Replace the needle Skipped stitches occur Needle is incorrectly installed Install the needle correctly Instruction manual Adjust ...

Page 150: ...rside of material Upper thread length is irregular Adjust the sub tension Instruction manual Upper thread tension is too weak Adjust the upper thread tension P 89 Lower thread tension is too weak Adjust the lower thread tension P 89 Thread take up spring tension and height are incorrect Adjust the tension and height of the thread take up spring P 90 Incorrect tightening of the thread Position of a...

Page 151: ...11 7 SEGMENT DISPLAY 144 BAS 311G BAS 326G 11 7 SEGMENT DISPLAY ０１２３４５６７８９ＡＢＣＤＥＦＧＨＩＪＫＬＭＮＯＰＱＲＳＴＵＶＷＸＹＺ ...

Page 152: ...SERVICE MANUAL 15 1 Naeshiro cho Mizuho ku Nagoya 467 8561 Japan Phone 81 52 824 2177 Printed in Japan BAS 311G BAS 326G I5060885B 2005 07 B 1 http www brother com ...

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