Brother BAS-761 manual

BAS-761 Please read this manual before using the machine. Please keep this manual within easy reach for quick reference. AUTOMATIC POCKET SETTER <JEANS> INSTRUCTION MANUAL[...]

i BAS-761 Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions below and the explanations given in the instruction manual. With industrial sewing machines, it is normal to carry out work while positioned directly in front of moving parts such as the needle and thread take-up lev[...]

ii BAS-761 The ambient temperature should be within the range of 5 ° C to 35 ° C during use. Temperatures which are lower or higher than this may cause problems with correct operation. The relative humidity should be within the range of 45% to 85% during use, and no dew formation should occur in any devices. Excessively dry or humid environments [...]

iii BAS-761 CAUTION Turn off the power switch at the following times, otherwise the machine may operate if the start switch is pressed by mistake, which could result in injury. • When replacing the needle • When not using the machine and when leav- ing the machine unattended Do not touch any of the moving parts or press any objects against the [...]

iv BAS-761 CAUTION If the power switch and air need to be left on when carrying out some adjustment, be ex- tremely careful to observe all safety precau- tions. 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 origi- nal positions and check that th[...]

v BAS-761 1 ★ The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times when using the machine. If the labels have been removed or are difficult to read, please contact your nearest Brother dealer. Safety devices: Thread take-up cover, Guard bar, Belt cover, etc. c Warning labels 2 Hazard[...]

BAS-761 CONTENTS 1. Names of Machine Components .................................................................................................. ............ 1 2. Specifications ............................................................................................................................................. 2 3. Installation ..........[...]

1 BAS-761 1. Names of Machine Components 1. Names of Machine Components q Foot-switch w Stacker e Guard bar r Feed roller t Machine head y Spool stand u Top cover i Control box o Switch box !0 Folding group assembly !1 Mechanical valve !2 RESTART buttons !3 Front supporter !4 Floppy drive !5 Programmer !6 Air unit valve !7 Power switch !8 Blower Mo[...]

2 BAS-761 2. Specifications 2. Specifications Lock stitch and special cross stitch sewing machine with automatic thread trimmer Sewing pockets on the various types of jeans 9 seconds approx. (depending on the pitch and rpm) 500 – 4250rpm (9-step button selectable; limited by sewing condition) 500 – 3500rpm (7-step button selectable; cannot exce[...]

3 BAS-761 3. 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 head weights more than 400 kg. The installation should be carried out by two or more people. Co not connect the power cord un[...]

4 BAS-761 3-2.Removal of the fixing bolts from the machine The machine head and the sewing clamp arm are fixed with bolts to secure them during transportation. Remove fixing bolt q on the machine head through the hole in the front cover . Note: ¡ Save removed fixing bolts q future use. ¡ Before transporting the machine be sure to secure it with t[...]

5 BAS-761 Connect connector q securely . 3-4. Connection of the foot-switch connector 1. Attach air hose q to air unit valve w . 2. Move the upper cap of air unit valve w upward and ad- just the air pressure to 0.49 MPa. 3. After adjustment, move the cap downward and lock. 3-5. Connection of the air hose q w 1. Loosen bolts q and position front sup[...]

6 BAS-761 Loosen the mounting bolts e for the operation box q and switch box w , and move them in the direction of the arrow to a position where they are comfortable to oper - ate. 3-7. Installation positions for operation box and switch box e w q 3. Installation[...]

7 BAS-761 3-8. Installation of the folding group assembly Before installation ¡ Apply air pressure. ¡ T urn on power switch q to return the machine to the home position. ¡ T urn valve switch w to OFF (lower) side and "E-820" will flash on the display . 1. Install folding clamp assembly e onto folding base r . 2. Attach multi-connector [...]

8 BAS-761 4. Lubrication 4. Lubrication Note: Check for sufficient oil through oil gauge windows A and B on the machine head and the table. If the oil amount is not sufficient, be sure to replenish it. How to oil the machine head Replenish the oil through oil port q . How to oil the machine table 1 Move the machine head forward so that the lubricat[...]

9 BAS-761 5. Correct operation 5. Correct operation 5-1. Installing the needle Fully insert needle q , with its long groove to the left, and secure it with screw w . Note: If the angle is incorrect, the needle an rotary hook will lock when the needle bar is at its lowest posi- tion, so make sure that the needle and rotary hook do not lock. 5-2. Upp[...]

10 BAS-761 5. Correct operation 5-3. Bobbin case threading ■ Removal of the bobbin case 1. Press BOBBIN CHANGE button !4 and the machine will move toward you and stop; 2. T ake out bobbin case q . Replace the bobbin. 3. If the REST ART buttones @0 are pressed after the RE- SET button @1 has been pressed, the machine head will move back to the hom[...]

11 BAS-761 5-4. Bobbin thread winding 1. Pass the bobbin thread from the spool stand as illustrated below . 2. Wind the thread around the bobbin q as arrwed. 3. Press lever w against the bobbin q . 4. After completing bobbin q thread winding, cut the thread. Note: Check for any idle rotation of the bobbin q . The motor may overheat, if the bobbin q[...]

12 BAS-761 5-5. Thread tension w qr e Stitches when upper thread tension is too low Stitches when upper thread tension is too high Correct stitches 1. When the thread take-up lever is in the highest position after thread trimming, adjust the upper thread beyond the needle eye so as it is 30 to 40 mm long, by turning tension nut q . (30 - 70 g is st[...]

13 BAS-761 6. Button functions 6. Button functions 6-1. Operation box panel buttones q LCD screen Displays sewing information and error messages. w FOLDING MODE button This button is used to change the operating mode of the folder . Folder operating modes include automatic mode, pattern matching mode, label attachment mode and step mode. e LABEL bu[...]

14 BAS-761 6. Button functions u SEWING SPEED button This button is used to set the sewing speed and bar tacking speed. The sewing speed can be set in 9 steps from 500 to 4,250 rpm, and the bar tacking speed can be set in 7 steps from 500 to 3,500 rpm. i COUNTER button This button is used to set the lower thread counter , piece counter decrement (c[...]

15 BAS-761 !4 BOBBIN CHANGE button If this button is pressed when changing the bobbin, the machine head can be moved forward to make bobbin changing easier . !5 CANCEL button If this button is pressed during folder mode setting, while data is being saved to or read from a floppy disk, while the sewing speed is being set or if the COUNTER button is [...]

16 BAS-761 6-2. Switch box panel buttones 6. Button functions !9 @0 @1 @2 !9 FOLDER RESET button (carries out positioning when the power is turned on) This button is used to stop the folder while folding is in progress and to reset he folding condition. When the button is pressed once, folding is stopped, and when it is pressed twice, the folder is[...]

17 BAS-761 6. Button functions 6-3. Foot switch Foot switch @3 When the folder is in automatic mode, this switch is used to operate the vacuum system. When the folder is in pattern matching mode, this switch is used to raise and lower the folder table to carry out pattern matching. When the folder is in label attachment mode, this switch is used to[...]

18 BAS-761 FOLDING MODE AUTO PATTERN LABEL STEP 7-2. Setting the sewing speed and the bar tacking speed ¡ These settings can be made when the machine head is at the standby position, while the bobbin is being replaced and while sewing is stopped. ¡ The bar tacking speed cannot be greater than the sewing speed. If the bar tacking speed is set to a[...]

19 BAS-761 7. Settings before sewing * If the SEWING SPEED button u is pressed once more, the sewing speed will not be changed, and screen 2-2 for changing the bar tacking speed will be displayed. 3. Press the ENTER button !6 . The sewing speed will be changed to the new setting, and screen 2-2 for chang- ing the bar tacking speed will be displayed[...]

20 BAS-761 7. Settings before sewing 7-3. Setting the lower thread counter ¡ The lower thread counter determines how many workpieces can be produced according to the amount of lower thread which has been wound inside the bobbin case. ¡ This setting can be made when the machine head is at the standby position and while the bobbin is being re- plac[...]

21 BAS-761 7. Settings before sewing 7-4. Setting the piece counter ¡ This setting can be made when the machine head is at the standby position and while the bobbin is being re- placed. ¡ The piece counter can be set to "0" (reset), or it can be decremented by 1, It cannot be incremented. Change piece counter. PIECE COUNTER 1234 Screen [...]

22 BAS-761 7. Settings before sewing 7-6. Setting the date and time This setting can be made when the machine head is at the standby position and while the bobbin is being replaced. Change date. DATE 1998/10/1 Screen 6-1 1. Press the COUNTER button i four times. Screen 6-1 will then be displayed. 2. Press the [ ] and [ ] arrow keys !8 to select the[...]

23 BAS-761 8. Preparation for sewing 8. Preparation for sewing Press FOLDER RESET SW to start searching for home position. Screen 7 1. Apply air pressure and turn on power switch. Screen 7 will then be displayed on the panel. 2. Press the FOLDER RESET button !9 . The machine head will move to the home position and then stop in the standby condition[...]

24 BAS-761 8. Preparation for sewing 4. Insert a floppy disk. Note: Insert a floppy disk straight into the slot. The label side of the disk must face the front. 5. Press the FLOPPY button y . Screen 9 will then be dis- played. Use the arrow keys !8 to select the same number as the work clamp assembly . Then use the [ ] and [ ] arrow keys !8 to sele[...]

25 BAS-761 9. Sewing 9. Sewing 9-1. Sewing with the folder in automatic mode 2. Press the FOLDER RESET button !9 . The machine head will move to the home position and then stop in the standby condition. 3. Set the folder mode to automatic mode. NOTE: Refer to page 18 for details on how to set the folder mode. 4. Press the ST ACKER button r so that [...]

26 BAS-761 9. Sewing 9-2. Sewing with the folder in pattern matching mode 2. Press the FOLDER RESET button !9 . The machine head will move to the home position and then stop in the standby condition. 3. Set the folder mode to pattern matching mode. NOTE: Refer to page 18 for details on how to set the folder mode. 4. Press the ST ACKER button r so t[...]

27 BAS-761 9-3. Sewing with the folder in label attachment mode ¡ T wo types of label attachment mode can be used: when DIP switch D-2 is set to OFF , alternate label attachment is carried out, and when DIP switch D-2 is set to ON, continuous label attachment is carried out. ¡ With alternate label attachment, the folder switches alternately betwe[...]

28 BAS-761 9. Sewing 9-4. Sewing with the folder in step mode ¡ In step mode, the folder operates in a step-by-step manner , so that checking can be carried out during folding. ¡ If he LABEL indicator e is switched off, automatic mode is followed during step mode operation. If the LABEL indicator e is illuminated, label attachment mode is followe[...]

29 BAS-761 9-5. T est feeding T est feeding should always be carried out a new program is created or when changes are made to existing data. NOTE: Check that the needle does not touch the work clamp. 1. Carry out the sewing preparation as far as step 6. 2. Press the TEST button !2 and check that the TEST indicator is illuminated. 3. Operate the fol[...]

30 BAS-761 9. Sewing 9-6. Emergency stop To stop the machine during sewing If you would like to stop the machine head during sewing, press the EMERGENCY STOP button @2 . The machine head will stop and the error message "E-801" will appear on the panel screen. If the RESET button @1 is then pressed, the thread will be trimmed and the scree[...]

31 BAS-761 1 2 BAS761 2.4 q Gauge 1 (x2.4 rotary hook) 10. Adjustments Maintenance and inspection of the sewing machine should only be carried out by a quali- fied technician. Ask your Brother dealer or a qualified electri- cian to carry out any maintenance and inspec- tion of the electrical system. T urn off the power switch and disconnect the pow[...]

32 BAS-761 1 2 BAS761 1.7 1 2 BAS761 1.7 10-2. Needle and rotary hook timing r e ¡ After needle-bar q is raised from its lowest position, rotary hook point w must be aligned with the center of needle e when the lower end of needle-bar q is matched the end of gauge 2. ¡ If rotary hook point w is not aligned with the center of needle e , loosen scr[...]

33 BAS-761 10-4. Removal of the fixed knife and the movable knife Note: T urn off the power switch. ■ Removal of the fixed knife 1. Remove flat-head screws q and then needle plate RR w and needle plate RL e . 2. Remove clamping screws r and then tilt the machine head. NOTE: At this time, adjust the position of the machine head so that it is align[...]

34 BAS-761 10. Adjustments 10-5. Stacker position adjustment 1. Loosen the four bolts w and adjust the height of the stacker base q so that the workpieces stack neatly onto the stacker base q . 2. Loosen the two bolts e , and then adjust the vertical position of the stacker base q so that the workpieces stack neatly onto the stacker base q . 3. Loo[...]

35 BAS-761 10. Adjustments 10-6. Sewing clamp assembly number selection ¡ Attach slit C and Slit D to the sewing clamp assembly by a clamping screw and a spring washer . See the table below for the sewing clamp assembly numbers. ■ Sewing clamp assembly number NOTE: ¡ For retractable clamps, set jumpers 0 to 31. ¡ For single clamps, set jumpers[...]

36 BAS-761 No. 1 2 3 4 5 6 7 8 Functions when ON In automatic, pattern matching and label attachment modes, the work clamp stops momentarily before feeding to the home position. Low feeding speed (Machine head → Folder) Low feeding speed (Folder → Machine head) Not available (Should be set to OFF) Not available (Should be set to OFF) Not availa[...]

37 BAS-761 No. 1 2 3 4 5 6 7 8 Functions when ON 7 stitches counted before upper thread breakage is detected OFF: 3 stitches counted before upper thread breakage is detected After sewing, the work clamp and machine head return to the previous standby position, even if folding has been completed. Movement to the feed destination occurs immediately w[...]

38 BAS-761 Error code E – 500 E – 501 E – 502 E – 503 E – 504 E – 505 E – 510 E – 511 E – 512 E – 513 E – 520 E – 530 E – 535 E – 536 E – 540 E – 550 E – 560 E – 570 E – 580 E – 600 E – 700 E – 701 E – 710 E – 711 E – 720 E – 730 E – 740 E – 750 E – 780 E – 781 Reset No No No No No No Yes [...]

39 BAS-761 Error code E – 800 E – 801 E – 802 E – 803 E – 810 E – 820 E – 821 E – 830 E – 840 E – 850 E – 860 E – 870 E – 880 E – 890 E – 900 E – 901 E – 902 E – 903 E – 910 E – 920 E – 960 E – 970 Reset Yes Yes No Yes No Yes No No No No No No No No No No No No No No No No Contents EMERGENCY STOP button p[...]

INSTRUCTION MANUAL Printed in Japan 151-761 S93761-102 2000.09. B (1) BROTHER INDUSTRIES, LTD. 15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone: 81-52-824-2177[...]