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Brother BAS-311H - page 1
BAS-31 1H Please read this manual before using the machine. Please keep this manual within easy reach for quick reference. DIRECT DRIVE PROGRAMMABLE ELECTRONIC PATTERN SEWER INSTRUCTION MANUAL ...
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Brother BAS-311H - page 2
BAS-31 1H Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety in structions below and th e explanat ions given in the instruct ion manual. With industrial sew ing machines, it is normal to ca rry out work while positioned directly in f ront of moving parts such as the needle and thread take ...
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Brother BAS-311H - page 3
BAS-31 1H i SAFETY INSTRUCTIONS [1] Safety indications and the ir meanings This instruction manual and the indications and s ymbols that ar e used on the machine itself are provided in order to ensure safe operation of this machine and to prevent a ccidents and injury to yourself or other people. The meanings of these indications and symbols are gi ...
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Brother BAS-311H - page 4
BAS-31 1H ii [2] Notes on safety DANGER Wait at least 5 minutes after turning off the pow er sw itch and disconnecting the power cord from the wall outlet before opening the control box cover. T ouching areas where high voltages are pres ent can result in severe injury. WARNING Do not allow any liquids to get onto this sewing machine, otherwise fir ...
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Brother BAS-311H - page 5
BAS-31 1H iii CAUTION Sewing This sewing machine should only be used by operators who have received the necessary training in safe use beforehand. The sewing machine should not be used for any applications other than sewing. Be sure to wear protective goggles when using the machine. If goggles are not worn, ther e is the danger that if a needle bre ...
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Brother BAS-311H - page 6
BAS-31 1H iv [3] Warning labels The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times wh en using the machine. If the l abels have been removed or are difficult to read, please cont act your nearest Brother dealer. 1 2 . 3 4 5 6 7 Be careful not to get your hand caught when tilting back ...
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Brother BAS-311H - page 7
BAS-31 1H v 3228B 3029B Tension release solenoid cover Inner cover L Outer cover Fixed cover Thread take-up cover Finger guard Gas spring support cover Eye guard Side cover Rear cover Inner cover R Outer cover Fixed cover ...
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Brother BAS-311H - page 8
BAS-31 1H CONTENTS 1. NAMES OF MA JOR PARTS ................ 1 2. SPECIFI CATIONS ................................ 2 3. INSTAL LATION .................................... 3 3-1. Table proces sing diagram ................................ 4 3-2. Installing t he control box ................................... 5 3-3. Installing the oil pan ............ ...
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Brother BAS-311H - page 9
BAS-31 1H 8. SEWING ................................................ 51 8-1. Se wing .............................................................. 51 8-2. Using the STOP switch ..................................... 52 9. CLEANING ........................................... 53 9-1. Cleaning the rotary hook .................................. 53 9-2. ...
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Brother BAS-311H - page 10
1. NAMES OF MAJOR P ARTS BAS-31 1H 1 1 . NAMES OF MAJOR P ARTS (1) Power switch Safety devices: (2) Control box (1 1) Finger guard (3) Operation panel (12) Eye guard (4) Foot switch (13) Thread ta ke-up cover (5) W ork cla mp sw itch (14) Rear cover (6) S tart switch (7) STOP switch (8) Pulley (9) Cotton stand (10) Solenoid valve (pneumatic work cl ...
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Brother BAS-311H - page 11
2. SPECIFICA T IONS BAS-31 1H 2 2 . SPECIFICA TIONS Sewing machine Lock stitch pattern t acking sewing machine (with large shuttle hook) S titch formation Single needle lock stitch Max. sewing speed 2,800 sti/min Max. sewing area (XxY) 150 x 100 mm Feed mechanism Intermittent feed, pulse motor drive S titch length 0.05 − 12.7 mm No. of stitches 5 ...
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Brother BAS-311H - page 12
3. INST ALLA TION 3 BAS-31 1H 3. INST ALLA TION C A U T I O N Machine installation should only be carried out by a qualified technician. Contact your Brother dealer or a qualified electrician for any electrical w ork that may need to be done. The sewing machine head weighs approximately 88kg. The installation should b e carried out by two or more p ...
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Brother BAS-311H - page 13
3. INST ALLA TION 4 BAS-31 1H 3-1. T able processing diagram • The thickness of the table should be at least 40 mm, and it should be strong enough to bear t he weight and vibration of the sewing machine. • Check that the contro l box is at least 10 mm aw a y from the leg. If the control box and the leg are too close together, it may result in i ...
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Brother BAS-311H - page 14
3. INST ALLA TION 5 BAS-31 1H 3-2. Inst alling the control box Remove the si x screws (1), and then remove the con trol box cover (2). (3) Control box (4) Bolts [4 pcs.] (5) Plain washers [4 pcs.] (6) S pring washers [4 pcs.] (7) Nuts [8 p cs.] (8) Power sw itch (9) Wood screw s [2 pcs.] (10) S taples [4 pcs.] 3-3. Inst alling the oil p an (1) Oil ...
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Brother BAS-311H - page 15
3. INST ALLA TION 6 BAS-31 1H 3-4. Inst alling the machine head (1) Pins [2 pcs.] (2) Set screw s [2 pcs.] (3) Hinge rubber assemblies [2 p cs.] Place the machine head gently on top of the oil pan . NOTE: • Be careful not to get the cords clamped between the machine head and the oil p an. • When holding the machine head, do not hold it by the p ...
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Brother BAS-311H - page 16
3. INST ALLA TION 7 BAS-31 1H (10) Auxiliary plate (11) Bolts w ith washer [8 p cs.] Loosen the eight bol ts with washer (1 1), and adjust so that the auxiliary plate (10) is 0 to 0 .5 mm above the needle plate (10). Gently tilt back the machine head. NOTE: • Install the auxiliary plate (10) so that it is horizontal. If the auxiliary plate (10) i ...
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Brother BAS-311H - page 17
3. INST ALLA TION 8 BAS-31 1H (12) Gas spring holders [2 pcs.] (13) S pacer (14) Bolt (15) Nut (16) Gas spring (17) Shaft collars [2 pcs.] (18) Gas spring shaft D (19) Plain washers [2 pcs.] (20) Retaining rings E [2 pcs.] (21) Bolts [2 pcs.] (22) Plain washers (medium) [2 pcs.] (23) Plain washers (large) [2 pcs.] (24) S pring washers [2 pcs.] (25) ...
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Brother BAS-311H - page 18
3. INST ALLA TION 9 BAS-31 1H Gently return the machine head to its original position. 1. Remove the two screw s (30), and then temporaril y remove the machine head switch (31). 2. Use the two screws (30) which were removed to install the machine head switch (31) in the position show n in the illustration. 3. Check that the machine head sw itch as ...
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Brother BAS-311H - page 19
3. INST ALLA TION 10 BAS-31 1H 3-6. Inst alling the two-pedal foot switch (1) T wo-pedal foot switch (2) Conversion harness Connect the connector for the tw o-pedal foot switch (1) to the conversion harness (2). In sert the conversion harness (2) into the P15 (PEDAL) connector on the main P .C. board. (Refer to "3-7. Connecting the cords" ...
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Brother BAS-311H - page 20
3. INST ALLA TION 11 BAS-31 1H NOTE: Route the X, Y and work clamp pulse motor harnesse s so that they do not touch the power supply P .C. board. Connectors Connection location on main P . C. board Cord clamps X pulse motor encoder [5-pin] White P17 (X-ENC) (2) Y pulse mo tor encoder [5-pin] Blue P18 (Y -ENC) (2) Work cla mp pulse motor encod er [5 ...
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Brother BAS-311H - page 21
3. INST ALLA TION 12 BAS-31 1H Connectors Connection location on motor P . C. board Cord clamps/ cable ties Upper shaft motor [4-pin] （ UVW ） (4) Synchronizer [10-pin] P1 1 （ SYNC ） (2) (3) Operation p anel [4-pin] P3 (P ANEL) (2) (3) 5. Close the co rd presser plate (2) in the direction o f the white arrow, and secu re it by tightening the ...
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Brother BAS-311H - page 22
3. INST ALLA TION 13 BAS-31 1H 3-8. Connecting the ground wire C A U T I O N Be sure to connect the ground. If the ground connection is not secure, you run a high ri sk of receiving a serious ele ctric shock, and problems wi th correct operation may also occur. (1) Ground wire from the machine head (2) Ground wire from operation p anel (3) Ground w ...
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Brother BAS-311H - page 23
3. INST ALLA TION 14 BAS-31 1H 3-9. Connecting the power co rd C A U T I O N Be sure to con nect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric shock, and problems w ith correct operation may also occur. Connect cords that match the voltage specifications. < EU specifica tions ＞ (1) Filt ...
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Brother BAS-311H - page 24
3. INST ALLA TION 15 BAS-31 1H <200 V system > (1) Pow er switch (2) Screw s [2 pcs] (3) 3-pin power supply connector (4) Pow er cord (5) Staples [5 pcs] 1. Attach an appropriate plug to the power cord (4). (The green and yellow wire is the grou nd wire.) 2. Insert the power plug i nto a properly-grounded electrical outl et. NOTE: • Take ca ...
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Brother BAS-311H - page 25
3. INST ALLA TION 16 BAS-31 1H <100 V / 400 V system > (1) Pow er switch (2) Screw s [2 pcs] (3) Transformer box (4) Transformer box plates [2 pcs] (5) Screw [with w asher] (6) 3-pin power supply connector (7) Staples [6 pcs] (8) Cord clamps [2 pcs] (9) Pow er cord 1. Attach an appropriate plug to the power cord (9). (The g reen and yellow wi ...
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Brother BAS-311H - page 26
3. INST ALLA TION 17 BAS-31 1H 3-10. Inst alling the cotton st and (1) Cotton stand NOTE: Securely tighten the nut (4) so that the two rubber cushions (2) and the washer (3) are securely clamped and so that the co tton stand (1) does not move. 3357B ...
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Brother BAS-311H - page 27
3. INST ALLA TION 18 BAS-31 1H 3-11. Inst alling the pneumatic unit (p neumatic work clam p specifications) Install underneath the work table. (1) Solenoid valve assembly (2) W ashers [2 pcs.] (3) W ood screws [2 pcs.] (4) Rubber hose (OPTION P ARTS) After installing the pneumatic unit, adjust the air pressure. (Ref er to "10-1 6. Ad justi ng ...
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Brother BAS-311H - page 28
3. INST ALLA TION 19 BAS-31 1H 3-12. Inst alling the eye guard C A U T I O N Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result. (1) Bolt (loosen) (2) Ey e guard (tilt forward) (3) Ey e guard assembly (4) Plain washers [2 pcs.] (5) Bolts [2 pcs.] After inst alling the ...
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Brother BAS-311H - page 29
3. INST ALLA TION 20 BAS-31 1H 3-14. Lubrication C A U T I O N Do not connect the pow er cord until lubrication i s complete. If the foot sw itch is depressed by mistake , the sewi ng machine might start operating and injury could result. Be sure to w ear protective goggles and gloves w hen handling the lubricating oil and grease , so that they do ...
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Brother BAS-311H - page 30
3. INST ALLA TION 21 BAS-31 1H 3-15. Inst alling the mach ine head fixing bolt When transporting the sew ing machine, secure the machine head to the table w ith the machine head fixing bolt. (1) Plain washer [2 pcs.] (2) Machine head fixing bolts [2 pcs.] NOTE: When operating the sewing machine, remove the ma chine head fixing bolt. 3-16. Checking ...
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Brother BAS-311H - page 31
4. PREP ARA TI ON BEFORE SEWING 22 BAS-31 1H Needle cooler Thread the u pp er thread 4. PREP ARA TION BEFORE SEWING 4-1. Inst alling the needle C A U T I O N Turn off the pow er switch before installing the needle. If the foot sw itch is depressed by mistake , the sewi ng machine might start operating and injury could result. 1. Loosen the set scre ...
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Brother BAS-311H - page 32
4. PREP ARA TI ON BEFORE SEWING 23 BAS-31 1H <Threading mod e> Threading mode is safe because the sewing machine w ill not start even w hen the foot switch is depre ssed. 1 Turn on the power switch. 2 THREAD/CLAMP indicator illuminates MENU indicator sw itches off Press the THREAD/CLAMP key . • The work clamp will drop. • The tension disc ...
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Brother BAS-311H - page 33
4. PREP ARA TI ON BEFORE SEWING 24 BAS-31 1H 4-3. Winding the lo wer thread CAUTION Do not touch any of the moving parts or press any objects agai nst the machine while w inding the lower thread, as this may result in personal injury or damage to the machine. 1. Place the bobbin onto the bobbin winder shaft (1). 2. T hread the th read as shown in t ...
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Brother BAS-311H - page 34
4. PREP ARA TI ON BEFORE SEWING 25 BAS-31 1H 4-4. Inst alling the bobbin case CAUTION Turn off the power switch before installing the bobbin case. If the foot sw itch is depressed by mistake, the sewing machine might st art operating and injury could result. 1. Pull the shuttle race cover (1) downward to open it. 2. While holding the bobbin so that ...
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Brother BAS-311H - page 35
4. PREP ARA TI ON BEFORE SEWING 26 BAS-31 1H 4-5. Thread tension [Thread tensi on reference] S pecifications Medium-weight materials (-03[]) Heavy-weight materials (-05[]) Seatbelt (-07[]) Upper thread #50 or similar #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. ...
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Brother BAS-311H - page 36
4. PREP ARA TI ON BEFORE SEWING 27 BAS-31 1H 4-6. S tarting up Before turning on the pow er switch, check that the needle bar is at the needle u p stop position. T urn the pulley (1) in the direction of the arrow until the ridge at the bottom of the thread t ake-up (2) is aligned with the index mark. 1. T urn on the power switch. The POWER indicato ...
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Brother BAS-311H - page 37
5. USING THE OPERATION PA NEL (B ASIC OPERA TIONS) 28 BAS-31 1H 5. USING THE OPERA TION P ANEL (BASIC OPERA TIONS) 5-1. Name and f unction of each ope ration p a nel item (1) Power indic ator Illuminates when the pow er is turned on. (2) CA UTION indicator Illuminates w hen an error occurs. (3) RESET key Used to reset er rors. (4) TEST key Used to ...
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Brother BAS-311H - page 38
5. USING THE OPERATION PA NEL (B ASIC OPERA TIONS) 29 BAS-31 1H (12) SPLIT No. indicator Illuminates when the SEL ECT key (14) is pressed to show the split setting w hen split data (for specify ing a pause while the program is running) exists . (13) WIPER indicator Illuminates w hen the SELECT key (14) is pressed to switch to the thread wiper . (14 ...
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Brother BAS-311H - page 39
5. USING THE OPERATION PA NEL (B ASIC OPERA TIONS) 30 BAS-31 1H 5-2. Program setting method For details on the sewing dat a reading method, refer to “7. USING SD CARDS”. Select the item to be changed. Press the SELECT key. ・ The selected parameter changes in the order sho wn in the illustration below each time the SELECT key is pressed. 1 X-s ...
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Brother BAS-311H - page 40
5. USING THE OPERA TION P ANEL (BASIC OPERA T IONS) BAS-31 1H 31 5-2-1. Parameter list Parameter Setting range and initial value Display X-scale 0% - 400% (Limited by available sewing area.) (Initial value is 100%.) * The setting can be displayed in “mm” units by setting memory switch No. 402 to “ON”. Y -scale 0% - 400% (Limited by availabl ...
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Brother BAS-311H - page 41
5. USING THE OPERATION PA NEL (B ASIC OPERA TIONS) 32 BAS-31 1H Parameter Setting range and initial value Display Lo1-Lo9 (Initial values: Lo4) The starting-up speed at the sew ing start can be adjusted. * The smaller the number, the slower the start. * This is used to stop the thread from pulling out at the sew in g start, and at times when skippe ...
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Brother BAS-311H - page 42
5. USING THE OPERA TION P ANEL (BASIC OPERA T IONS) BAS-31 1H 33 5-2-2. Using the lo wer thread counter If you use the lower thread counter to set the number of articles which can be sewn with the amount of lower thread available, you can stop the lower thread running out in the middle of sew ing a pattern. <Initial value setting> 1 Change th ...
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Brother BAS-311H - page 43
5. USING THE OPERATION PA NEL (B ASIC OPERA TIONS) 34 BAS-31 1H 5-2-3. Using the production c ounter <Set ting th e counte r value> 1 Change t he mode to pro duction count er setting mode. SPEED indicator illu minates TEST indicator and COUNTER indicator flash While pressing the TEST key, press the key. ・ The 7 digits of the current counter ...
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Brother BAS-311H - page 44
5. USING THE OPERA TION P ANEL (BASIC OPERA T IONS) BAS-31 1H 35 5-2-4. S plit number setting method If split data (data that causes sewing to p ause) exists within a single p rogram, the numbers that are used to specify the pattern s that are separated by split d ata are called split numbers. Pattern 1: S plit No. 1 Pattern 2: S plit No. 2 Pattern ...
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Brother BAS-311H - page 45
5. USING THE OPERATION PA NEL (B ASIC OPERA TIONS) 36 BAS-31 1H 5-3. Copying programs Sewing programs can be copied to other program numbers. 1 Press the or key to select the program number that you would like to use as the copying destination. 2 Switch to program copy mode. While pressing the TEST key, press the SELECT key. • “CoPy” will app ...
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Brother BAS-311H - page 46
5. USING THE OPERA TION P ANEL (BASIC OPERA T IONS) BAS-31 1H 37 5-4. Checking the sewing p a ttern Use test feed mode to opera te the feed mechan ism in o rder to check the needle movement. Check that the needle hole doe s not come out from the frame of the w ork clamp. TEST indicator lights 1. Press the TEST key. • The number of stitches remain ...
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Brother BAS-311H - page 47
5. USING THE OPERATION PA NEL (B ASIC OPERA TIONS) 38 BAS-31 1H 5-5. Setting the work clamp lif t amount The settings for the work clamp and intermedia te work cl amp li ft amount can be changed using the operation panel. * For pneumatic work clamp specifications, only threading mode and in termittent presser foot height setting mode will be availa ...
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Brother BAS-311H - page 48
5. USING THE OPERA TION P ANEL (BASIC OPERA T IONS) BAS-31 1H 39 3 Press the key. The sewing machine w ill switch to intermitten t presser foot height setting mode. • " 4" will appear in the PROGRAM No. display , and the work clamp will rise to the setting value that appears in the menu display . (Intermittent presser foot height settin ...
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Brother BAS-311H - page 49
6. USING THE OPERATION PA NEL ( ADVA NCED OPERATIONS) 40 BAS-31 1H 6. USING THE OPERA TION P ANEL (ADV ANCED OPERA TIONS) 6-1. Setting memory switch es 1 Change t he mode to me mory s w itch set ting mode. Menu indicator switches of f, TEST indicator flashes While pressing the TEST key, press the TENSION key. ・ The memory sw itch number will appe ...
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Brother BAS-311H - page 50
6. USING THE OPERATION PA NEL ( ADVA NCED OPERATIONS) BAS-31 1H 41 6-2. List of memory switch settings No. Setting range Setting items Initial value Work clamp lif t timing after sew in g is completed 0 Work clamp is not raised auto matically . 1 Work clamp is raised at the final stitch position. 001 2 Work clamp is raised af ter moving to the home ...
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Brother BAS-311H - page 51
6. USING THE OPERATION PA NEL ( ADVA NCED OPERATIONS) 42 BAS-31 1H No. Setting range Setting items Initial value Program numbers switched by F keys 0 When the F1 to F4 keys are pressed, operation switches to sewing program numbers 101 to 104. 1 When the F1 to F4 key s are pressed, operation switches to cycle program numbers C01 to C04. ＊ Selectio ...
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Brother BAS-311H - page 52
6. USING THE OPERA TION P ANEL (ADV ANCED OPERA TIONS) BAS-31 1H 43 6-3. Using cycle programs Sewing patterns that have been recorded in user programs c an be recorded in up to 30 cycle programs (C01 to C30). One cycle program can contain up to a maximum of 50 steps (S t1 to S t50). When sewing the sewing patterns in a cert ain order , it ca n be u ...
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Brother BAS-311H - page 53
6. USING THE OPERATION PA NEL ( ADVA NCED OPERATIONS) 44 BAS-31 1H 5 Repeat steps 3 and 4 above to record step 2 and subsequent steps in the same way . Press the or key (5) to display the step number you would like to record in the menu display (6). 6 If you would like to continue setting anothe r cycle program, repeat step s 2 to 5 above. 7 End cy ...
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Brother BAS-311H - page 54
6. USING THE OPERA TION P ANEL (ADV ANCED OPERA TIONS) BAS-31 1H 45 <Method of us e> When a cycle program has been recorded, t he cycle program number is displayed af ter the program number when a program number is selected. 1. Press the or key (1) to select the cycle program number that you would like to use. ・ The cycle program number is ...
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Brother BAS-311H - page 55
6. USING THE OPERATION PA NEL ( ADVA NCED OPERATIONS) 46 BAS-31 1H 6-4. Direct selection Y ou can use the function keys to directly se lect program numbers and cycle program numbers. How ever , if a program number has noth ing recorded, it will not be displayed. <Function keys> The parameters which can be selected w ill va ry depending on the ...
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Brother BAS-311H - page 56
6. USING THE OPERA TION P ANEL (ADV ANCED OPERA TIONS) BAS-31 1H 47 6-5. Resetting all settings to their default s If the sew ing machine stops operating normally, the cause may be that an incorrect setting may have been made for the memory data by means of memory switches, for insta nce. In such cases, it may be possible to restore normal operatio ...
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Brother BAS-311H - page 57
7. USING SD CARDS 48 BAS-31 1H 7. USING SD CARDS 7-1. Notes on handling SD cards (commercially available) • Use an SD card or a multimedia card with a capacity of 2GB or less. • Do not disassemble or alter SD cards. • Do not bend, drop, scratch or place heavy objects on top of the SD cards. • Do not allow the SD cards to become wet, such as ...
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Brother BAS-311H - page 58
7. USING SD CARDS 49 BAS-31 1H 7-3. Prep aration for reading and writing data 1 Insert the SD card into the SD slot. NOTE: • Make sure the SD card is facing the correct w ay . • The cover should be closed at all times except when the SD card is inserted and removed, otherwise dust may cause trouble. 2 Turn on the power switch. 3 Switchin g to S ...
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Brother BAS-311H - page 59
7. USING SD CARDS 50 BAS-31 1H 7-4. Reading additional sewing dat a 1 Select the “ r 1” SD data read/w rite mode. (Refer to “7-3. Prep aration for reading and writing data”.) ・ The number of the additional sewing data in the SD memory card folder will appear in the tension display . (T he initial value displayed is “ALL”.) 2 Press the ...
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Brother BAS-311H - page 60
8. SEWING BAS-31 1H 51 8. SEWING WARNING Do not allow any liquids to get onto this sewing machine, otherwise fire, electric shocks or operating problems may occur. If any liquid gets inside the sewing machine (machine head or control box), immediately turn off the power and disconnect the power plug from the electrical outlet, and then contact the ...
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Brother BAS-311H - page 61
8. SEWING BAS-31 1H 52 8-2. Using the ST OP switch If you press the ST OP switch (1) w hile sewing or test feeding is in progress, the CAUTION indicator (2) wi ll illuminate and the sewing machine will stop immediately . <Clearing> 1. Press the RESET key (3). • The thread will be trimm ed, and then the CAUTION indicator (2) will switch of f ...
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Brother BAS-311H - page 62
9. CLEANING BAS-31 1H 53 9. CLEANING CAUTION Turn off the power switch before carrying out cleaning. If the foot sw itch is depressed by mistake, the sewing machine might st art operating and injury could result. Be sure to w ea r protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or o ...
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Brother BAS-311H - page 63
9. CLEANING BAS-31 1H 54 2309B 3119B 9-2. Cleaning the contro l box air inlet port s Use a vacuum cleaner to clean the filter in the air inlet ports (2) of the control box (1 ) at least once a month. 9-3. Draining the oil 1. Remove and empty the waste oil tank (1) w henever it is full. 2. After empty ing the waste oil tank (1), screw it back into i ...
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Brother BAS-311H - page 64
9. CLEANING BAS-31 1H 55 9-7. Applying grease (Feed mechanism) If you are frequently sewing heavy-weight materials, using the sewing machine for long periods or using the sewi ng machine in places where there is a lot of dus t, it is recommended that you apply grease to maintain the performance of the feed mechanism. <Applying grease> Use Bro ...
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Brother BAS-311H - page 65
9. CLEANING BAS-31 1H 56 3. Applying grease Push the work clamp arm (3) all the w ay to the rear edge, and then appl y grease to groove A. Push the work clamp arm (3) all the w ay to the front edge, lift up the bellows (4), and then apply grease to groove B. 4. Install the feed plate. (Refer to “10-1 1. Installing the feed plate”.) 3222B 3224B ...
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Brother BAS-311H - page 66
10. ST ANDARD ADJUSTMENTS BAS-31 1H 57 1 0 . ST ANDARD ADJUSTMENTS CAUTION 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 maintenance and inspection of the electrical system. Turn off the power sw itch and disconnect the power ...
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Brother BAS-311H - page 67
10. ST ANDARD ADJUSTMENTS BAS-31 1H 58 10-2. Thread t ake-up spring S pecifications Medium-weight materials (-03[]) Heavy-weight materials (-05[]) Seatbelt (-07[]) Thread take-up spring height (mm) 7 − 10 2 − 4 Thread take-up spring tension (N) 0.2 − 0.5 0.6 − 1.2 1.0 − 1.4 <Thread take-up spring height> Loosen the set screw (1) and ...
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Brother BAS-311H - page 68
10. ST ANDARD ADJUSTMENTS BAS-31 1H 59 10-4. Adjusting the needle bar height T urn the pulley in the direction of the arrow to move the needle bar to the low e st position. Then remove the rubber plug (2), loosen the screw (3) and then move the needle bar up or down to adjust so that the second re ference line from the bottom of the needle bar (ref ...
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Brother BAS-311H - page 69
10. ST ANDARD ADJUSTMENTS BAS-31 1H 60 10-6. Adjusting the needle clearance T urn the pulley in the direction of the arro w to align the tip of the rotary ho ok with the center of the needle, and then loose n the set screw (1) and turn the eccentric shaft (2) to adjust so that the clearance between the needle and the rotary hook is 0.01 to 0.08 mm. ...
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Brother BAS-311H - page 70
10. ST ANDARD ADJUSTMENTS BAS-31 1H 61 10-9. Adjusting the positi on of the movable knife 1. Open the top cover and t ilt back the machine head. 2. Turn the pulley (1) by hand to move the needle bar to its lowest position. 3. Loosen the nut (2), tighten the set screw (5) until the collar (3) touches the insi de of the groove in the thread trimmer c ...
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Brother BAS-311H - page 71
10. ST ANDARD ADJUSTMENTS BAS-31 1H 62 7. Loosen the two screw s (9), and then remove the cover (10). 8. Loosen the bolt (11). 9. Move the movable knife connecting plate (13) back and forth to adjust so that the distance from the ridge on the right side of the needle plate to the ridge on the mo vable knife (12) is 9.5 to 9.9 mm. 10. After tighteni ...
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Brother BAS-311H - page 72
10. ST ANDARD ADJUSTMENTS BAS-31 1H 63 10-10. Replacing the mova ble and fixed knives 1. Loosen the t wo bolts (1) and t hen remove the feed plate (2). 2. Open the shuttle race cover, remove the t wo screw s (3) and the two flat screws (4), and th en remove the needle plate (5). 3. Remove the movable knife (6) and the fixed knife (7). 4. Install th ...
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Brother BAS-311H - page 73
10. ST ANDARD ADJUSTMENTS BAS-31 1H 64 10-1 1. Inst alling the feed plate NOTE: Install the feed plate (1) so tha t the surfac e 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 ...
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Brother BAS-311H - page 74
10. ST ANDARD ADJUSTMENTS BAS-31 1H 65 10-12. Adjusting the thread wiper 1. Loosen the two screws (3) and shift the entire solenoid setting plate (4) up or dow n to adjust so that the thread w iper (2) is 15 mm in front of the needle center when the plunger (1) of the thread w iper solenoid is driven to the full stroke. 2. Loosen the screw (5) and ...
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Brother BAS-311H - page 75
10. ST ANDARD ADJUSTMENTS BAS-31 1H 66 10-14. Adjusting the intermittent work clamp The intermittent stroke can be adjusted to within 2 − 10 mm by adjusting the position of the stepping clamp connecting rod and changing the installation posit ion of stepping clamp link A. <Changin g the installation position o f stepping clamp lin k A > 1. ...
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Brother BAS-311H - page 76
10. ST ANDARD ADJUSTMENTS BAS-31 1H 67 <Stepp ing clamp conne cting rod posit ion adjustment> 1. Loosen the screw (1), and then open the cover (2). 2. Loosen the nut (3), and then ad just the position of the st epping clamp connecting rod (4). • When the stepping clamp connecting rod (4) is ra ised, the intermittent stroke will increase. ? ...
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Brother BAS-311H - page 77
10. ST ANDARD ADJUSTMENTS BAS-31 1H 68 10-15. Adjusting the work clamp lift amount <Motor-driven work clamp specification s> The operation panel settings can be used to adjust the height to w ithin 15 − 25 mm. (Refer to "5-5. Setting the work clamp lift amount.") <Pneumatic work clamp specifications> The maximum lift amount ...
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Brother BAS-311H - page 78
10. ST ANDARD ADJUSTMENTS BAS-31 1H 69 10-17. If processing the wo rk clamp s and the feed plate to a shape that matches the sewing p attern Process the work clamps and feed plate which match the sewing pattern, wh ile referring to the processing diagram below . * V alues in ( ) are the recommended sizes when sew ing using the maximum area (150x100 ...
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Brother BAS-311H - page 79
1 1. LIST OF ERROR CODES 70 BAS-31 1H 1 1. LIST OF ERROR CODES D A N G E R Wait at least 5 minutes after turning off the pow er sw itch and disconnecting the power cord from the wall outlet before opening the control box cover. T ouching areas where high voltages are pres ent can result in severe injury. If a malfunction should occur with the sewin ...
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Brother BAS-311H - page 80
1 1. LIST OF ERROR CODES 71 BAS-31 1H Motor-related errors Code Cause of error and remedy E 111 Upper shaft did not stop at the needle up st op position when the sewing machine stopped. T urn off the pow er , and then check that connectors P1 1 and P1 on the motor P .C. board and connector P6 on the main P .C. board are properly inserted. E121 Thre ...
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Brother BAS-311H - page 81
1 1. LIST OF ERROR CODES 72 BAS-31 1H Feed mechanism-related errors Code Cause of error and remedy E200 X-feed motor home position cannot be det ected. Problem with X-feed moto r or poor X home position sensor connection. T urn off the power , and then check that connectors P17, P21 and P8 on the main P .C. board are properly connected. E201 X-feed ...
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Brother BAS-311H - page 82
1 1. LIST OF ERROR CODES 73 BAS-31 1H Work clamp-related errors Code Cause of error and remedy E300 Work clamp h ome position cannot be detected. Problem with w ork clam p motor or poor work clamp home position sensor connection. T urn off the power , and then check that connectors P19, P23 and P8 on the main P .C. board are properly connected. E30 ...
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Brother BAS-311H - page 83
1 1. LIST OF ERROR CODES 74 BAS-31 1H Communication an d memory-related errors Code Cause of error and remedy E401 Communication error detected between the main P .C. b oard and the motor P .C. board when the power was turned on. T urn off the power , and then check that connector P1 on the panel P .C. board, connector P5 on the main P . C. board a ...
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Brother BAS-311H - page 84
1 1. LIST OF ERROR CODES 75 BAS-31 1H Data editing-related errors Code Cause of error and remedy E500 The enlargement ratio setting caused the sew i ng data to extend outside the sewing area. Set the enlargement ratio again. Press the RESET key to clear the error . E502 The enlargement ratio caused the data pitch to exceed the maximum pitch of 12.7 ...
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Brother BAS-311H - page 85
1 1. LIST OF ERROR CODES 76 BAS-31 1H P .C. board-related errors Code Cause of error and remedy E700 Abnormal rise in power supply voltage. T urn off the pow er , and then check the input voltage. E701 Abnormal rise in upper shaft motor drive volt age. T urn off the pow er , and then check the voltage. E705 Abnormal drop in power supply voltage. T ...
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Brother BAS-311H - page 86
12. TROUBLESHOOTING 77 BAS-31 1H 12. TROUBLESHOOTING ・ Please check the following points bef ore calling for rep airs or service. ・ If the following remedies do not fix the problem, turn off the pow er switch and consult a qualified technician or the place of purchase. CAUTION Turn off the power switch and disconnect the po wer cord before carr ...
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Brother BAS-311H - page 87
12. TROUBLESHOOTING 78 BAS-31 1H Problem Cause Remedy Reference Lower thread w inds to one side. Height of bobbin winder tension assembly is incorrect. Adjust the height of the bobbin winder tension assembly . P . 24 Lower thread w inding amount is incorrect. Bobbin presser position is incorrect. Adjust the position of the bobbin presser . P . 24 N ...
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Brother BAS-311H - page 88
12. TROUBLESHOOTING 79 BAS-31 1H Problem Cause Remedy Reference Thread is too thick for the needle. Select a thread which is suitable for the needle. P . 26 Needle is not installed correctly . Install the needle so that it faces correctly . P . 22 Thread is not threaded correctly . Thread the thread correctly . P . 22 Damage or burring in parts su ...
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Brother BAS-311H - page 89
12. TROUBLESHOOTING 80 BAS-31 1H Problem Cause Remedy Reference Needle is too thin. Select a needle that is suit able for the sewing conditions. P . 26 Hole diameter in needle hole plate is too small. Replace the needle hole plate with one with a larger hole diameter . Feed plate is too thin. Use a thicker feed plate. *Recommended thickness: 1.5 mm ...
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Brother BAS-311H - page 90
13. 7-SEGMENT DISPLA Y LIST 81 BAS-31 1H 13. 7-SEGMENT DISPLA Y LIST 4268M ...
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Brother BAS-311H - page 91
MEMO 82 BAS-311H ...
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Brother BAS-311H - page 92
INSTRUCTION MANUAL © 2014 Brother Industr ies, Ltd. All Righ ts Reserved. This is the original instructions. BAS-31 1H SB4717-201 E 2014.02. B (3) * Please note that the contents of this manual may differ slightly from the actual pr oduct purchased as a result of product imp rovements. ...
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