Page 1 SERVICE MANUAL BAS-311E,311EL BAS-326E,326EL Please read this manual before making any adjustments. PROGRAMMABLE ELECTRONIC PATTERN SEWER WITH CYLINDER BED...
Page 2: Safety Instructions
This service manual is intended for BAS-311E, 311EL and 326E; be sure to read the BAS-311E, 311EL, and 326E, 326EL instruction manuals before this manual. Carefully read the “SAFETY INSTRUCTIONS” below and the whole of this manual to understand this product before you start maintenance.
Page 3: Notes On Safety
If using a work table which has casters, the casters chould be secured in such a way so • When not using the machine that they cannot move. • When leaving the machine unattended BAS-311E.311EL.326E.326EL...
Page 4 Disconnect the air hoses from the air sup- or returning it to its original position. ply and wait for the needle on the pressure gauge to drop to "0" before carrying out in- spection, adjustment and repair of any parts which use the pneumatic equipment. BAS-311E.311EL.326E.326EL...
Page 5: Warning Labels
Apagar el interruptor minutes before warten sie 5 minuten, avantd' ouvrir le capot principal y esperar 5 opening this cover. bevor sie diese minutos antes de abrir abdeckung öffnen. esta cubierta. [BAS-311E] Belt cover Thread take-up cover Eye guard Finger guard BAS-311E.311EL.326E.326EL...
Page 6: Table Of Contents
Explanation of models This manual explains three models •BAS-311E (Solenoid type, Pnevmatic type), 311EL (Pnevmatic type), 326E, 326EL (Pnevmatic type) Explanation for individual model is provided by identifying the model name. Check the model before useing the machine. INDEX Chapter 1. Mechanical description ............1 Needle bar, thread take-up, lower shaft and shuttle hook mechanism ....
Page 7 15. Adjusting the thread trimmer driving lever position ..........67 16. Work clamp lift components for manual operation (Solenoid type) ..... 68 17. Adjusting the presser foot height ................68 18. Adjusting the needle up step position ..............69 BAS-311E.311EL.326E.326EL...
Page 8 Chapter 7. Trouble shooting ..............95 Flowchart ........................95 Problem solution and measures ................101 Chapter 8. 1. Gauge parts list according to subclasses ......112 Chapter 9. Gauge parts list ................ 113 Chapter 10. Option parts ................123 Control Block diagram ....................140 BAS-311E.311EL.326E.326EL...
Page 9: Chapter 1. Mechanical Description
5. The crank rod i oscillates the attached rock gear o. 6. The rock gear o oscillates the lower shaft !1 through the lower shaft gear !0 . The lower shaft !1 oscillates the attached driver ! 2 and inner rotary hook ! 3 in the shuttle hook mechanism. BAS-311E.311EL.326E.326EL...
Page 10 5. The spring ! 2 , the work clamp arm lever (RR) ! 3 and (F) ! 4 which are linked to presser bar lifter lever (R) ! 1 operate in the direction of the arrow. 6. Work clamp (UN) !5 and presser foot (L) !6 ·(R) !7 are pressed down through work clamp lever (F) !4 . BAS-311E.311EL.326E.326EL...
Page 11: Work Clamp Lifting Mechanism (1)(2)
1. When the air cylinder q operates in the direction of the arrow, work clamp lifter lever D w and lever U e also operate in the direction of the arrow. 2. Work clamp SE r is moved vertically via knee lifter lifting lever U e. BAS-311E.311EL.326E.326EL...
Page 12 2. When X-timing pulley B311 r moves, timing pulley A y linked to the X-timing pulley shaft t moves X-timing belt B311 u left and right. 3. Feed bracket X i secured to X-timing belt B311 u moves via linear guide 311 o in the X direction (left and right). BAS-311E.311EL.326E.326EL...
Page 13: Feed Mechanism (X Axis)
3. The work clamp arm assy i is attached to the Y-feed bracket o via X-feed shaft support 326 y attached to the Y- driving shaft t and the X-feed shaft u. 4. The Y-feed bracket o operates in the Y-direction (back and forth) via cross roller 326 !0 and Y-feed guide 326Y !1 . BAS-311E.311EL.326E.326EL...
Page 14 R r. 2. The oscillation of stepping work clamp arm R r is transmitted to stepping work clamp arm F t, and the stepping link assy y moves the presser bar lifter u up and down. BAS-311E.311EL.326E.326EL...
Page 15: Presser Foot Mechanism (1)
2. The lifter lever w operates the work clamp lifter lever assy r via the work clamp lifter wire e. Note: When the machine stops, the stepping solenoid q operates, and the presser foot rises as soon as the work clamp rises. At this time, tension releasing is performed. BAS-311E.311EL.326E.326EL...
Page 16: Thread Trimmer Mechanism
4. As the thread trimmer lever o is linked to the thread trimmer rod i, the connecting rod lever !0 operates. 5. When the thread trimmer connecting rod ! 1 linked to the connecting rod lever ! 0 operates, the fixed knife ! 2 and the movable knife !3 fit into each other and perform thread trimming. BAS-311E.311EL.326E.326EL...
Page 17: Thread Nipper (1)(2) When Presser Foot Rises
2. The thread trimmer driving lever q moves the tension release lever e via the tension release rod w. 3. The tension release lever e pushes the tension release bar r. 4. The end of the tension release bar r pushes the pin t and the tension disk opens y. BAS-311E.311EL.326E.326EL...
Page 18: Thread Wiper (1) (2)
1. After thread trimming, the thread wiper signal is on and the thread wiper solenoid q operates. 2. When the plunger w operates in the direction of the arrow, T-wiper connecting rod assy S e also operates. 3. Thread wiper A r attached to T-wiper connecting rod assy e operates. BAS-311E.311EL.326E.326EL...
Page 19: Chapter 2. Disassembly
4. Remove the screw and the face plate i. 5. Remove the screw and the X-feed bracket covers o on the right and left and cover spacer !0 Y-feed bracket cover !1 . 6. Remove the screw and XY-feed base covers (L) !2 and (R) !3 . BAS-311E.311EL.326E.326EL...
Page 20 5. Remove the screws and X-axis feed bracket cover assemblies L and R i. 6. Loosen the screws, and remove the left and right feed bracket cover supports o in the direction of the arrow. 7. Remove the screws, and X-Y feed bracket covers L !0 and R !1 . BAS-311E.311EL.326E.326EL...
Page 21: Feed Mechanism
1. Remove the screw, the needle q and the presser foot w and finger guard e. 2. Remove the bolt and the work clamp r. 3. Remove the screw, the feed plate t and the needle sub plate y. BAS-311E.311EL.326E.326EL...
Page 22: Presser Foot Mechanism
3. Push up the presser bar !3 , and separate it from the presser bar bush !4 . (The presser bar lifter o, the cushion !5 , and the needle bar clamp !6 will come off as a set.) BAS-311E.311EL.326E.326EL...
Page 23: Needle Bar Mechanism
(The thread take-up assembly !5 will come off.) 7. Remove the rubber cap !6 , the screw !7 , and the needle bar guide y. (Do not remove them if possible to prevent the machine from overheating due to needle bar rubbing.) BAS-311E.311EL.326E.326EL...
Page 24: Upper Shaft Mechanism
8. Remove the upper shaft r in the direction of the arrow. After that, remove the thread take-up crank q, the stepping work clamp cam ! 1 , and the thread trimmer cam ! 2 from the upper shaft r, in this order. BAS-311E.311EL.326E.326EL...
Page 25 2. Remove the screws and the work clamp arm w. 3. Tilt the machine head until it stops. 4. Remove the bolt of the Y-driving shaft holder e, the Y-driving shaft r and the X-feed shaft support t. 5. Raise the machine head. BAS-311E.311EL.326E.326EL...
Page 26: Feed Mechanism (Y Axis)(1)(2)(3)
7. Remove the bolts, the Y-driving pulse motor bracket !4 , timing pulley A !2 , the Y-timing belt !5 , and micro bearings !6 . * To remove the Y-driving shaft holder ! 7 , remove the bolt, the belt holder ! 8 , the timing belt spacer, ! 9 , and the Y- timing belt !5 . BAS-311E.311EL.326E.326EL...
Page 27 7. Remove the four bolts, Y-feed guide assy 326 !0 , cross roller 326 !1 , and the Y-feed bracket !2 . 8. Remove the eight set screws, the X-feed bracket !3 , and the linear guide !4 . BAS-311E.311EL.326E.326EL...
Page 28 4. Remove the bolts !2 from adjustment holes, and separate X-pulley base B !3 . 5. To remove the X-feed bracket ! 4 , remove the eight set screws, the belt holder ! 5 , the timing belt spacer ! 6 , and X-timing belt B311 ! 0 . BAS-311E.311EL.326E.326EL...
Page 29 (At this time, X-timing belt B326 !6 , timing pulley B !8 , and the two micro bearings @2 will come off.) 6. Remove the bolt @4 on the back of the X-feed bracket @3 , the belt holder @5 , the timing belt spacer @6 , and X-timing belt B326 ! 6 . BAS-311E.311EL.326E.326EL...
Page 30: Lower Shaft Mechanism
6. Loosen the set screw of the set screw collar o, and remove the rock gear shaft !0 from the rear of the machine. 7. Remove the set screw collar o, the rock gear !1 , and the crank rod !2 . 8. Raise the machine head. BAS-311E.311EL.326E.326EL...
Page 31: Work Clamp Lifter (Solenoid Type)
5. Remove the rubber cap !1 , the snap pin !2 , and link shaft C !3 . Be sure to hold the presser plate ! 4 and the presser bar lifter lever rubber ! 5 so that they do not fall. 6. Remove all parts connected to the plunger r by lifting them upward. BAS-311E.311EL.326E.326EL...
Page 32: Thread Nipper Mechanism
8. Loosen the bolt, and remove the work clamp lifter lever !2 . 9. Loosen the set screw of the work clamp lifter lever !2 , and remove the flanged shaft !3 . 10.Return the machine head to its original position. BAS-311E.311EL.326E.326EL...
Page 33: Thread Trimmer Mechanism
8. Loosen the set screw !8 , and remove the lever shaft !9 and the thread trimmer lever @0 . 9. Return the machine head to its original position, and remove the connecting rod lever @1 and the thread trimmer driving lever @ 2 . BAS-311E.311EL.326E.326EL...
Page 34: Thread Trimmer Mechanism (1)
11.Fit the thread cutter connecting rod @3 on connecting lever pin @4 , and install needle plate @5 using the flat screws @6 and screws @ 7 (First tighten the flat screws @ 6 and screws @ 7 ). BAS-311E.311EL.326E.326EL...
Page 35: Thread Nipper Mechanism
7. Attach the thread trimmer rod o to the tension release assembly q with the shoulder screw !0 . 8. Attach the other end of the tension release rod o to the thread trimmer driving lever ! 1 using the shoulder screw ! 0 . BAS-311E.311EL.326E.326EL...
Page 36 Move the lifter lever t so that there is no clearance (0 mm) between work clamp lifter lever !9 and the presser bar clamp @ 0 , remove the slack from the work clamp lifter wire @ 1 , and tighten the bolt @ 2 . BAS-311E.311EL.326E.326EL...
Page 37: Work Clamp Lifter Mechanism
7. Attach the spring !7 to link shaft B !8 and the pin !9 . 8. Hang the rod @0 on the shoulder screw @1 , and insert the former into link shaft B @2 , and secure it using the snap pins @3 . 9. Attach the rubber cap @4 . BAS-311E.311EL.326E.326EL...
Page 38 4. Sliding portions of link shaft D u, link C t, and plunger 1. Sliding portion of the work clamp q (Apply small amount of grease). 2. Sliding portions of the work clamp arm lever shaft w and work clamp arm levers R and L e. BAS-311E.311EL.326E.326EL...
Page 39: Feed Mechanism (X Axis)
! 2 . Secure them to the X-pulley base B o using the retaining ring !3 . 4. Place timing pulley (B) ! 1 at the middle of X-pulley base (B) o, then tighten the two set screws ! 4 . BAS-311E.311EL.326E.326EL...
Page 40 6. Move the X-feed bracket !6 to the left end and apply a load of 9.8N (1 kgf) to the center of the X-timing belt B i. Then adjust the X-timing belt B i with the adjust screw @ 1 to produce a deflection of 3 mm. 9.8N (1kgf) 80mm BAS-311E.311EL.326E.326EL...
Page 41 3. Place X-timing belt B326 w and X-timing belt A326 !2 on X-pulley bracket L !1 , pass the X-timing pulley shaft !3 through the micro bearing ! 4 , timing pulley A ! 5 , X-timing pulley B326 ! 6 , and the micro bearing ! 4 , and attach the retaining ring !7 . BAS-311E.311EL.326E.326EL...
Page 42 8. Insert the bolt @7 that is used to adjust the tension of X-timing belt A326 !2 from the left side of the bed, into X-pulley bracket L ! 1 . 9. Insert the bolt @8 that is used to adjust the tension of X-pulley belt B326 w from the right side of the bed, into X-pulley bracket R y. BAS-311E.311EL.326E.326EL...
Page 43: Feed Mechanism (Y Axis)
!8 on the Y-timing belt q, and secure the Y- timing belt q to the Y-driving shaft holder ! 6 . 8. Lightly pressing the assembled Y-driving pulse motor base u against end A of the machine, secure it with the screws. “A” BAS-311E.311EL.326E.326EL...
Page 44 (Y) q with the ad- just bolt #3 so that there is no looseness of the presser arm @9 . 17.After adjustment, tighten the bolt ! 5 of the driving P mo- tor bracket w. BAS-311E.311EL.326E.326EL...
Page 45 When attaching the right Y-feed guide ! 0 to the right of the X-feed bracket y, lightly pushing it to the left so that there is no looseness in the Y-feed bracket i, and tighten the bolt and set screw !1 . BAS-311E.311EL.326E.326EL...
Page 46 8. Move the work clamp Arm ! 2 left and right to make sure that there is no inclination in X-feed shaft ! 4 . Then securely tighten the bolts of Y-driving shaft e and the X-feed shaft support ! 3 . 9. Remove the set screw of the slider support shaft !5 from the front of the work clamp Arm !2 . BAS-311E.311EL.326E.326EL...
Page 47: Upper Shaft Mechanism
5. Attach they synchronizer i to the machine using the screw o. 6. Attach the pulley !0 leaving a 0.5 mm clearance from the protrusion of the synchronizer i, tighten the set screw !1 that comes later when rotating to the screw flat. BAS-311E.311EL.326E.326EL...
Page 48: Needle Bar Mechanism
7. Find the position of the needle bar guide q so that the pulley rotates easily, and tighten the screw w. 8. Attach the oil cap !6 and the rubber caps !7 , !8 , and !9 . 9. Fit the needle bar thread guide @0 on the needle bar !3 . BAS-311E.311EL.326E.326EL...
Page 49: Presser Foot Mechanism
4. Pass stepping work clamp arm F !1 through spreader shaft bushes (L) and (R) !2 , then insert it into stepping work clamp arm R ! 3 . 5. Attach the stepping link assy !6 to the arm using the shoulder screw !5 , and to the presser bar lifter e using the retaining ring !7 . BAS-311E.311EL.326E.326EL...
Page 50 10.Turn the pulley to set the presser bar w at its lowest po- sition. Adjust the height of the presser foot @1 so that there is a 0.5 mm clearance from the top of the material to be sewn. 0.5mm BAS-311E.311EL.326E.326EL...
Page 51: Lower Shaft Mechanism (1)
9. Turn the pulley ! 6 to move the rock gear w right and left until the pulley rotates easily. Turn the rock gear shaft q to allow 0.05 - 0.12 mm play of the driver !1 . Then tighten the set screw !7 . 10.Return the machine head to its original position. BAS-311E.311EL.326E.326EL...
Page 52: Lower Shaft (Rotary Hook) (2)
6. Attach the large shuttle hook o to the large shuttle hook body !0 . 7. Insert the bobbin ! 1 into the bobbin case ! 2 , then attach them to the inner rotary hook ! 3 . BAS-311E.311EL.326E.326EL...
Page 53: Thread Trimmer Mechanism
6. Loosen the nut !3 , move the connecting rod lever w to the left and right to align the V notch A of the movable knife !4 with the mark on the needle plate e, and tighten the nut !3 . 7. Return the machine head to its original position. BAS-311E.311EL.326E.326EL...
Page 54: Feed Guide Mechanism (Home Position Adjustment: X )
11.Press the jog key ( vu ) to adjust the work clamp arm !5 until its X-direction motion is parallel to the X-reference line of the H-position standard plate ! 1 . Securely tighten the screws ! 6 . BAS-311E.311EL.326E.326EL...
Page 55 Note: When adjusting the X home position, be sure to set the clearance between the X-home position dog !8 and the surface where the sensor is activated to 0.1 - 0.5 mm. If the clearance is too great, an error in home position detection may occur because the temperature of the sewing machine rises during sewing operation. BAS-311E.311EL.326E.326EL...
Page 56 Note: When adjusting the Y home position, be sure to set the clearance between the Y-driving shaft y and the surface where the sensor u is activated to 0.1 - 0.5 mm. If the clearance is too great, an error in home position detection may occur because the temperature of the sewing machine rises during sewing operation. BAS-311E.311EL.326E.326EL...
Page 57: Covers
5. Attach the top cover ! 7 , and the side cover ! 8 with the screws. 6. Set the V belt ! 9 over the pulley @ 0 , then secure belt cover @1 with the screws @2 . BAS-311E.311EL.326E.326EL...
Page 58 4. Attach the bellows assy t to the work clamp arm and the X-axis feed bracket covers r using the screws. 5. Attach the faceplate y using the screws. 6. Attach the plunger pin u to the plunger i. 7. Attach the top cover o, the belt cover !0 , and the frame side cover !1 using the screws. BAS-311E.311EL.326E.326EL...
Page 59: Chapter 4. Adjustments
(reference line B) is aligned with the lower edge of the needle bar bush q. Then loosen the bolt w and move the driver e to adjust so that the tip of the rotary hook is aligned with the needle center line. 5 needle, use the second reference line from the top of the needle (reference line b). *If using a DP BAS-311E.311EL.326E.326EL...
Page 60: Adjusting The Needle Clearance
Install the shuttle race thread guide q by pushing it in the direction of the arrow so that the needle groove is aligned with the center of the needle plate hole. Note:If the shuttle race thread guide is in the wrong position, thread breakages, soiled thread or catching of the thread may occur. BAS-311E.311EL.326E.326EL...
Page 61: Adjusting The Two-Step Work Clamp Lift Amount
3. Place a scale against the work clamp e, and then move work clamp arm lever F q up or down to adjust so that the amount of lift above the top of the needle plate is 20 mm. 4. After adjusting the lift amount (20 mm), tighten the bolts w of work clamp arm lever F q. BAS-311E.311EL.326E.326EL...
Page 62 Chapter 4. Adjustments 6-2. Pneumatic type (BAS-311E · 311EL) 20mm (BAS-326E · 326EL) 20mm 1. Turn on the air, and then press the work clamp lifter switch q while turning it clockwise, to raise the work clamp w. 2. Loosen the bolts r of work clamp arm lever F e (BAS-326E, 326EL: work clamplifter lever y).
Page 63: Adjusting The Movable Knife
Check the cutting edge of the movable knife q and hole plate !2 . the fixed knife !1 . If necessary, use the provided mov- able knife spacer (t=0.4,t=0.5,t=0.6) to adjust the knives so that they cut properly. BAS-311E.311EL.326E.326EL...
Page 64 * When fitting the connecting rod o on the connecting lever pin !0 and before tightening the screws u and i, move the needle plate w back and forth slightly to confirm that the movable knife q is pulled by the con- necting rod o. BAS-311E.311EL.326E.326EL...
Page 65 * How to determine the mechanical home position a. Connect the programmer to the operation panel. b. Plug the cord into the wall socket, and turn on the power. c. Press the P key on the programmer to determine the mechanical home position. 326E, 326EL BAS-311E.311EL.326E.326EL...
Page 66: Adjusting The Lowest Point Of The Presser Foot
!4 . Turn the presser bar !5 so that the needle !2 is in the center of the hole of the presser foot ! 4 , and tighten the screw of the needle bar clamp ! 6 . BAS-311E.311EL.326E.326EL...
Page 67: Changing The Presser Foot Lift
If vertical movement of the presser foot is not required 1. Remove the face plate ! 0 . 2. Remove the shoulder screw !1 and re-attach the step- ping link !2 to the upper screw hole !4 of stepping work clamp arm F !3 . BAS-311E.311EL.326E.326EL...
Page 68: Wiper Adjustment
2. After the thread wiper has wiped the thread, loosen the bolt t and move the solenoid setting plate y up or down to adjust the distance to approximately 35 mm. BAS-311E.311EL.326E.326EL...
Page 69: Adjusting The Home Position
Note: When adjusting the X home position, be sure to set the clearance between the X-home position dog !0 and the surface where the sensor !1 is activated to 0.1 - 0.5 mm. If the clearance is too great, an error in home position detection may occur because the temperature of the sewing machine rises during sewing operation. BAS-311E.311EL.326E.326EL...
Page 70 Note: When adjusting the Y home position, be sure to set the clearance between the Y-home position dog t and the surface where the sensor u is activated to 0.1 - 0.5 mm. If the clearance is too great, an error in home position detection may occur because the temperature of the sewing machine rises during sewing operation. BAS-311E.311EL.326E.326EL...
Page 71 Note: When adjusting the Y home position, be sure to set the clearance between the Y-driving shaft y and the surface where the sensor u is activated to 0.1 - 0.5 mm. If the clearance is too great, an error in home position detection may occur because the temperature of the sewing machine rises during sewing operation. BAS-311E.311EL.326E.326EL...
Page 72: Adjusting The Tension Of The Timing Belt
When the power is turned on, move the work clamp arm u back and forth, and adjust the tension of the Y-timing belt y using the bolt t so that there is no looseness in the work clamp arm u. BAS-311E.311EL.326E.326EL...
Page 73 B i with a load of 9.8N (1 kgf) in the direction of the arrow. (326EL: 2.5 mm deflection with a load of 9.8N (1 kgf) Turn the bolts !0 clockwise to move X-pulley bracket R !1 until the appropriate tension is given, and secure X-pulley bracket R ! 1 to the bed using the bolts ! 2 . BAS-311E.311EL.326E.326EL...
Page 74: Adjusting Backlashes
0.05 - 0.12 mm looseness at the tip of the shuttle driver e. 0.05 - 0.12mm Y-axis feed Loosen the four bolts q, then adjust the Y-pulse motor w so that there is no backlash between the rock gear and the idle gear. BAS-311E.311EL.326E.326EL...
Page 75: Adjusting The Driving Lever Stopper Position
2. Turn the pulley to place the thread trimmer cam e with its non-operating portion facing upward. 3. Loosen the nut t. Move the screw y so that the roller r of the thread trimmer driving lever will return smoothly when it is put into the groove of the thread trimmer cam e. BAS-311E.311EL.326E.326EL...
Page 76: Work Clamp Lift Components For Manual Operation (Solenoid Type)
When pulling the lifter lever t toward you until it makes contact with the adjust screw u, the distance be- tween the presser foot and the needle plate should be 18 mm. Loosen the nut i, and adjust the adjust screw u. 18mm BAS-311E.311EL.326E.326EL...
Page 77: Adjusting The Needle Up Stop Position
The screw y on the D side is tightened fully counterclockwise at the time of shipment. 3. The screw u cannot be adjusted because it is used for detecting the needle stop position. BAS-311E.311EL.326E.326EL...
Page 78: Chapter 5. How To Make Up The Work Clamp
Chapter 5. How to make up the work clamp Chapter 5. How to make up the work clamp The work clamp is available in two types; clamping type and cassette type. The maximum sewing range is (W L) BAS-311E (130mm 60mm), 311EL (220mm 60mm), 326E (200mm 100mm), 326EL (220mm 100mm).
Page 79: How To Make Up Cassette Type Work Clamp
D-B. When mounting hinges on cassette plate D-B, insert a countersunk screw M3 into the 4.6 mm diameter countersunk hole prior to bonding the plastic plate. Cassette plate D-B Lower cassette plate (plastic) BAS-311E.311EL.326E.326EL...
Page 80 152633-001 152633-001 Hinge, right Hinge,right 152632-001 152632-001 Cassette plate D-A S02966-101 Cassette presser (B) assembly S02960-101 Cassette plate U-A S02971-000 Hinge,left 152633-001 Cassette plate D-A (t=1) Hinge,right 152632-001 S02966-101 Cassette plate D-A S02966-101 Cassette plate D-A 180 (t=1) S14392-201 BAS-311E.311EL.326E.326EL...
Page 81: Chapter 6 Power Supply And Electrical Parts Adjustment
Conversion transformer (depending on power supply voltage specification) The conversion transformer controls the power supply voltage to provide 220 V. Operation panel Control box Conversion transformer Panel circuit board DC fan Inlee fileer Power supply 3.5 FDD circuit board Main PCB BAS-311E.311EL.326E.326EL...
Page 82: Fuse Explanation
The power lamp is not lit, and nothing 153242-000 (glass tube fuse, 6A-250V) Company FGBO operates. Fuse 6A Fuji Tanshi The power lamp is not lit, and nothing 153242-000 (glass tube fuse, 6A-250V) Company FGBO operates. Fuse No.1 Fuse No.2 Fuse No.3 Fuse No.4 BAS-311E.311EL.326E.326EL...
Page 83: Connectors
Connector positions Outside of the control box Panel cord connector Foot switch connector Main PCB P24(OPTION) Main P-ROM(MN) Motor P-ROM (MT) BAS-311E.311EL.326E.326EL...
Page 84 Chapter 6 Power supply and electrical parts adjustment Power supply circuit board DC300 POWER ACIN P2 PER DC18 Outside of the panel Programmer cord Panel circuit board Panel P-ROM (PL) OPTION 2 OPTION 1 P1 FDD BAS-311E.311EL.326E.326EL...
Page 85 Chapter 6 Power supply and electrical parts adjustment Programmer and programmer circuit board LCD inverter Operation panel Programmer P - ROM LCD contrast VR Programmer PCB BAS-311E.311EL.326E.326EL...
Page 86 The work clamp does not operate. Main PCB The machine does not operate. Control Foot switch The work clamp does not operate. BAS-311E (Solenoid type) Main PCB Thread trimming is not performed. Thread wiper does not operate. The work clamp does not oeprate.
Page 87: Sewing Operation
Chapter 6 Power supply and electrical parts adjustment The work clamp does not operate. Main PCB (For BAS-311E solenoid type, there is no need to carry out wiring to air valves.) Air valve 3. Sewing operation The power lamp is not lit, and nothing operates.
Page 88 Error [E.c1] appears. (P10 FAN-L) DC fan DC fan Error [E.F1] appears. Power supply circuit board Main PDB Main PCB Indication is strange. Any switch does not have any effect. The power lamp is not lit. Ponel circuit board BAS-311E.311EL.326E.326EL...
Page 89 Chapter 6 Power supply and electrical parts adjustment Error [E.12] appears. Main PCB Emergency stop switch is rejected. EM switch Error [E.40] appears. Ponel circuit board Floppy disk BAS-311E.311EL.326E.326EL...
Page 90: Dip Switches
Left work clamp, right work clamp and presser foot lower in this order. ------ Pneumatic They rise in the reverse order. Both left and right work clamps, and presser foot lower in this order. Pneumatic They rise in the reverse order. BAS-311E.311EL.326E.326EL...
Page 91 When a fiber-type thread breakage detector device is used, detection precision is changed from 5 to 10. Fiber-type thread breakage detector device is ON, and DIP switch A-8 is ON (available as an option) When using a 3-stage pedal Feeding speed is switched to high speed. BAS-311E.311EL.326E.326EL...
Page 92: Dip Switches Inside The Control Box
5 For pneumatic type, set to ON when the connection has been changed so that the work clamp remains raised when the power is turned off. Stepping work clamp operated by air pressure is used (when solenoid type is standard). ---------------- ---------------- BAS-311E.311EL.326E.326EL...
Page 93 When the upper shaft is stopped, the motor will change direction and the needle bar will return to the vicinity of the needle up stop position. During an emergency stop, the thread is trimmed and the needle bar stops in the raised position. BAS-311E.311EL.326E.326EL...
Page 94: Changing Special Functions Using The Memory Switches
4. Press the STEP BACK switch w to switch the setting appearing in the display screen t from OFF to ON. If pressed once more: If the B.T. CHANGE switch y is pressed at this time, all memory switch settings will be changed to OFF. 5. Press the TEST switch q. The display will return to normal. BAS-311E.311EL.326E.326EL...
Page 95 When extended option output No.1 is ON, the sewing machine starts automatically. ç memo-23 Set to ON when the bobbin changer is being used. (This part is available by special order.) Note:C indicates that these functions are available for software versions MN-C or later. BAS-311E.311EL.326E.326EL...
Page 96 Bobbin thread counter is decremented at the start of sewing. memo-1d An air pressure drop detection switch is used. (This detection switch is available by special order.) memo-1E Split number is changed automatically. memo-1F Program number is changed automatically. BAS-311E.311EL.326E.326EL...
Page 97 In the left figure, an oval is sewing data, Lower left rectangle indicated with a of mask broken line is the mask. Note:Ç · Î · Ï indicates that these functions are available for software versions MN-C · MND · MN-F or later. BAS-311E.311EL.326E.326EL...
Page 98: Checking The Input Sensor And Dip Switch Input
PROGRAM NO. display u. 4. If the settings for DIP switch B are changed at this time, the changed switch number will appear in the right digit of the PROGRAM NO. display u. BAS-311E.311EL.326E.326EL...
Page 99: Checking The Input Voltage
In this case, carry out the following procedure to clear the memory, and also check the DIP switch settings. While pressing the R/W switch, turn on the power. This will clear all of the memory settings. R / W BAS-311E.311EL.326E.326EL...
Page 100: Confirming Software Version
Indication LED of MENU switch PROM X-SCALE Main PROM (MN) Y-SCALE Motor PROM (MT) SPEED Programmer PROM (PG) B.T.COUNTER Panel PROM (PL) Version number indication (example) PROM label BAS300E [A0] [300] Indication MN-C BAS300E [d0] [403] Indication PL-D03 BAS-311E.311EL.326E.326EL...
Page 101: Error Codes
Change the option output number. Thread breakage error detected by rotating-type E.80 Thread the upper thread. Sewing can then resume. thread breakage detector device. Upper thread breakage error detected by optical E.81 Thread the upper thread. Sewing can then resume. fiber-type sensor. BAS-311E.311EL.326E.326EL...
Page 102 Turn off the power and check. circuit board and main circuit board. Abnormal current detected in power supply circuit Turn off the power and contact a qualified service E.F2 board. technician. REFERENCE segment LED alphabet Panel display Text display BAS-311E.311EL.326E.326EL...
Page 103: Chapter 7. Trouble Shooting
Is the power lamp lit? Does any error #1.1 code appear on the ERROR NO. indicator? Press MENU switch a few times. Does the lit LED #1.2 change every time you press the MENU switch? Insert the floppy disk. BAS-311E.311EL.326E.326EL...
Page 104 NO. indicator? insertion Does an error code appear after the indicator lamp is lit and turned off? Turn on POWER switch. Step on the Foot switch. Do presser foot and Work clamp work clamp move up lifter and down? mechanism BAS-311E.311EL.326E.326EL...
Page 105 Does the presser plate return to the home position? Shifting to the sewing start position Does any error code appear on the ERROR NO. indicator? Does the presser plate shift to the sewing start position? BAS-311E.311EL.326E.326EL...
Page 106 Test presser plate lifter switch. Does the feeding operation get faster? Release the presser plate lifter switch. Does the presser plate movement match the floppy disk data? Does the presser plate return to the sewing start position without error? BAS-311E.311EL.326E.326EL...
Page 107 Are thread trimmer and thread wiper activated? Does the machine stop with the needle at the upper position? Does the machine return to the sewing start state according to the floppy disk data? BAS-311E.311EL.326E.326EL...
Page 108 Does the sewing operation restart? Turn on POWER Press the ∏ switch. Key on the programmer. Does the presser plate return to the home position? Programing device Is the display illuminated? Does each key switch function correctly? Stop (No abnorm ality) BAS-311E.311EL.326E.326EL...
Page 109: Problem Solution And Measures
¡ While the power is turned off, check each connector is securely plugged in by referring to page 73 “List of connector numbers and matches.” ¡ Find the error status number in the troubleshooting flowchart. ¡ From the applicable part of the flowchart, take the reference number to find the correspondingly numbered details of the problem in the following table. BAS-311E.311EL.326E.326EL...
Page 110 For 200 V, 220 V, and power supply voltage 230 V specifications of wall socket For 100 V, 110 V, 240 V, 380 V, 400 V, and About 220 V 415 V specifications After checking, turn off the power, and rejoin P4 connectors. BAS-311E.311EL.326E.326EL...
Page 111 If it is + 5V, the power circuit board is not defective. After measurement, turn off the power. 7. Panel circuit board defective • Check that P18 (PANEL) connectors of the main circuit Panel circuit board board and P5 (DRV) connectors of the panel circuit board are plugged in. BAS-311E.311EL.326E.326EL...
Page 112 • Check that connector P7 (XPM) on the control X pulse motor overcurrent has occurred in X- circuit board is securely inserted and the X-pulse control circuit pulse motor. motor is securely plugged in. board • Refer to #1.1-2 BAS-311E.311EL.326E.326EL...
Page 113 P1 on the panel PCB and the FDD, and switch is defective. between connectors CH1 and CH2 on the panel pressed, PCB and the FDD. • Replace the floppy disk drive. Floppy disk drive indicator lamp is not lit and an error code appears. BAS-311E.311EL.326E.326EL...
Page 114 Start Presser Second switch foot Presser (Pneumatic only) 3. Fuse blown (Quick melting • Remove fuse no.1 and check the continuity. type 5A-250V (If there is no continuity, go to the next item.) BAS-311E.311EL.326E.326EL...
Page 115 Measure the voltage across pins 2 and 3. The voltage should be +20V to 24V. After measurement, turn off the power, wait at least 5 minutes, and insert P12. Work clamp for pneumatic specification (BAS-311E and 325E) The work clamp does 5. The air valve is defective.
Page 116 Chapter 7 Error status Probable causes Check/repair/adjust Parts to be replaced Work clamp and presser foot for solenoid specification (BAS-311E) 7. Solenoid is defective. • Remove connector P5 (SOL) on the control circuit Solenoid board, and measure the resistance between the...
Page 117 PCB and connector P15 (DC300) on the control operate for circuit bard are securely inserted. sewing and • Check that connector P14 (UVW) on the control error [E.20] circuit board is securely inserted and there is no appears. looseness of the machine motor. BAS-311E.311EL.326E.326EL...
Page 118 Pins 5 and 6 (thread trimming) Pins 7 and 8 (thread wiper) The voltage in each case should be output for an Thread wiper instance at the end of sewing. Thread trimmer BAS-311E.311EL.326E.326EL...
Page 119 Programmi 2. The programmer is defective. • Replace the programmer with a new one. Programmer ng can not be made. • Replace the panel circuit board with a new one. 3. Panel circuit, board defective Panel circuit board BAS-311E.311EL.326E.326EL...
Page 120: Chapter 8. 1. Gauge Parts List According To Subclasses
Chapter 8. Chapter 8. 1. Gauge parts list according to subclasses The following parts are available for the BAS-311E, 311EL, 326E, 326EL for adding further flexibility to the range of appli- cations. Model BAS-311E BAS-311EL BAS-326E • (326EL) Subclass Extraheavy-...
Page 121: Chapter 9. Gauge Parts List
NEEDLE HOLE PLATE, D S10213001 NEEDLE HOLE PLATE, F ø2.2 S30925001 NEEDLE HOLE PLATE, ED <For 311E "extra heavy materials"> S30926001 NEEDLE HOLE PLATE, FD S34348001 NEEDLE HOLE PLATE, M ø4.0 S30450001 NEEDLE HOLE PLATE, H S25127001 NEEDLE HOLE PLATE, L BAS-311E.311EL.326E.326EL...
Page 122 Chapter 9. Gauge parts list Work clamp, Feed plate (BAS-311E) 75- 1 13.5 140- 1 75- 2 13.5 140- 2 73.5 75.5 OPTION PARTS 75-5 75-6 27 44 75-4 86.5 75-7 151-3 151-1 151-2 146.5 146.5 QTY NAME OF PARTS NAME OF PARTS REF.NO.
Page 123 Chapter 9. Gauge parts list Feed plate blank and Work clamp blank (BAS-311E) 13.5 13.5 13.5 152.2 66.2 REF.NO. CODE NAME OF PARTS REF.NO. CODE NAME OF PARTS <For gauge parts> 153-3 S43826001 WORK CLAMP BLANK, A-4.0 t=4.0 S42888001 H-POSITION STANDARD PLATE ASSY*...
Page 124 75-7 062670512 SCREW, PAN SM3.57-40X5 75-1 S42787001 WORK CLAMP GUIDE BRACKET, A <For medium materials> 75-2 S42884001 WORK CLAMP GUIDE BRACKET, B 140-1 S44621001 FEED PLATE, A 311L t=1.2 <For heavy materials> 140-2 S44622001 FEED PLATE, B 311L t=1.2 BAS-311E.311EL.326E.326EL...
Page 125 WORK CLAMP BLANK, 6.0L311L 151-3 S45602001 OT-FEED PLATE BLANK, C311L t=1.2 153-4 S45617001 WORK CLAMP BLANK, 6.0R311L Parts which have an asterisk (*) parts which have been assembled and adjusted to high precisions. These parts should never be disassembled. BAS-311E.311EL.326E.326EL...
Page 126 WORK CLAMP GUIDE PLATE S51042001 WORK CLAMP, UN326L 75-3 S42798001 WORK CLAMP GUIDE BRACKET <For Medium-thick materials> 75-4 S44451001 PRESSER ADJUSTING PLATE S44388001 FEED PLATE, A326 t=1.2 75-5 S42800001 ADJUSTING PLATE 140-1 S51037001 FEED PLATE, A326L t=1.2 75-6 S44453001 PRESSER FOOT, SE-OP BAS-311E.311EL.326E.326EL...
Page 127 OT FEED PLATE BLANK, B t=1.2 153-4 S44404001 WORK CLAMP BLANK, UN B-6.0 t=6.0 151-3 S44410001 OT FEED PLATE BLANK, C t=1.2 Parts which have an asterisk (*) parts which have been assembled and adjusted to high precisions. These parts should never be disassembled. BAS-311E.311EL.326E.326EL...
Page 128 FEED PLATE, A326 t=1.2 <For one-touch work clamp plate assy> <For thick materials> S44374001 WORK CLAMP PLATE ASSY, 326-OT t=0.5 140-2 S44389001 FEED PLATE, B326 t=1.2 S44376001 WORK CLAMP PLATE ASSY, 326-OT t=1.0 S44378001 WORK CLAMP PLATE ASSY, 326-OT t=2.0 BAS-311E.311EL.326E.326EL...
Page 129 WORK CLAMP BLANK, SE A-6.0-L t=6.0 S14841001 OT-FEED PLATE BRACKET ASSY 153-2 S51052001 WORK CLAMP BLANK, SE B-3.2-L t=3.2 Parts which have an asterisk (*) parts which have been assembled and adjusted to high precisions. These parts should never be disassembled. BAS-311E.311EL.326E.326EL...
Page 130 CASSETTE LOWER PLATE, B-180 t=2 154-3 S44463001 FEED PLATE SETTING BRACKET, SP S14389000 CASSETTE PLATE, U-A180 t=1 WORK CLAMP, SE-226SP S14390000 CASSETTE PLATE, U-B180 t=2 154-4 S44464001 165-1 152632001 HINGE ASSY, R 165-2 152633001 HINGE ASSY, L <For cassette clamp assy> BAS-311E.311EL.326E.326EL...
Page 131: Chapter 10. Option Parts
The thread wiper is driven by a pneumatic cylinder. Air wiper device 2-step thread tension Allows the upper thread tension to be switched between two settings at any position de- device sired by using the programmer. * Refer to the separate Parts Book for details. BAS-311E.311EL.326E.326EL...
Page 132 TAPPING SCREW,PAN V M3X10 1-18 S43259001 PROGRAMMER PCB ASSY S43255000 LCD COVER 1-19 S43269000 PROM PROGRAMMER ASSY S43256000 S43257000 INVERTER,LCD "OPTION PARTS" 1-10 037200615 TAPPING SCREW,PAN V M2X6 1-20 S40621000 EMI CORE,ESD-SR-15 1-11 S43271000 MAGNET,A 1-21 149809000 BEAD BAND,L BAS-311E.311EL.326E.326EL...
Page 133 1-13 S03803000 AIR TUBE 1-1-23 017501216 BOLT,M5X12 1-14 S28741000 AIR TUBE,L=300 1-1-24 021500216 NUT,2 M5 S14598001 OT FEED PLATE BLANK, 312 1-1-25 S18415101 HALF UNION,Q4M5 S12644001 EXTERNAL WORK CLAMP FOOT 312-2 S12643001 OUTER WORK CLAMP,312-1 S10542001 INNER CLAMP (LL) BAS-311E.311EL.326E.326EL...
Page 134 S44424001 SPACER, CRANK HOLDER S51076001 OUTER WORK CLAMP, 326L-3 S44425001 OUTER WORK CLAMP, 326E-1 S10542001 INNER CLAMP, LL 117291002 SCREW, FLAT SM3.18 S51077001 WORK CLAMP BLANK, A 326L 154252001 POSITIONING PLATE, L S51078001 OT-FEED PLATE BLANK, H 326L t=1.2 BAS-311E.311EL.326E.326EL...
Page 135 ONE-TOUCH HOLDER ASSY,L S20289101 WORK CLAMP HOLDER ASSY,L S20286101 ONE-TOUCH HOLDER ASSY,R S20293101 WORK CLAMP HOLDER ASSY,R Parts which have an asterisk (*) parts which have been assembled and adjusted to high precisions. These parts should never be disassembled. BAS-311E.311EL.326E.326EL...
Page 136 018680822 BOLT, SOCKET SM4.37X6 S44415001 ONE-TOUCH HOLDER ASSY, L S44417001 ONE-TOUCH HOLDER ASSY, R "FOR SUPPLY PARTS" Parts which have an asterisk (*) parts which have been assembled and adjusted to high precisions. These parts should never be disassembled. BAS-311E.311EL.326E.326EL...
Page 137 <FOR M-533K> S42807001 WORK CLAMP SET,S.H S42813001 WORK CLAMP SET,S.H <FOR M-520K> S42809001 WORK CLAMP SET,S.H 153057002 SCREW,BUTTON HEAD SM4.37 M-508 M-525 REF.NO. CODE NAME OF PARTS <FOR M-508> S18614001 WORK CLAMP SET,AS <FOR M-525> S18621001 WORK CLAMP SET,AS BAS-311E.311EL.326E.326EL...
Page 138 Parts which have an asterisk (*) parts which have been assembled and adjusted to high precisions. These parts should never be disassembled. For sewing the belt with hook REF.NO. CODE NAME OF PARTS <For Sewing the belt with hook> S13099001 NEEDLE PLATE,H S13100001 FEED DOG,H BAS-311E.311EL.326E.326EL...
Page 139 Chapter 10. Option parts 310-HSQ DEVICE UNIT NAME OF PARTS M-508 MALE M-508 FEMALE M-525 MALE M-525 FEMALE S24614-101 S24621-101 S24628-101 PARTS CORD S24605-101 HOOK SIZE (mm) OM Ø7.6,Ø8.6 SNAP SIZE (mm) SHAPE BAS-311E.311EL.326E.326EL...
Page 140 Chapter 10. Option parts 310-HS DEVICE UNIT NAME OF PARTS M-508 MALE M-508 FEMALE M-525 MALE M-525 FEMALE PARTS CORD S18581-001 S18590-001 S18598-001 S18606-001 HOOK SIZE (mm) OM Ø7.6,Ø8.6 SNAP SIZE (mm) FEMALE MALE BAS-311E.311EL.326E.326EL...
Page 141 NAME OF PARTS S44795001 WIDE PERFECT STITCH SET 1-4-1 S40842991 SHUTTLE HOOK BOX ASSY,WP 1-1-1 S40837001 SHUTTLE RACE BASE ASSY,WP 1-4-1-1 S40842001 SHUTTLE HOOK,WP S40840001 DRIVER,WP 1-5-1 S40843001 BOBBIN CASE ASSY,WP S40841101 SHUTTLE RACE BODY,WP 1-6-1 S40846001 MOVABLE KNIFE ASSY,WP BAS-311E.311EL.326E.326EL...
Page 142 NAME OF PARTS <Soft work clamp set> <Soft work clamp set> S43979001 SOFT WORK CLAMP SET S43979001 SOFT WORK CLAMP SET S43980001 SPRING S43980001 SPRING S12104000 UNION,Y4 S12104000 UNION,Y4 S08140000 AIR TUBE,4L=200 S08140000 AIR TUBE,4L=200 S04897000 PLUG,4 S04897000 PLUG,4 BAS-311E.311EL.326E.326EL...
Page 143 SET SCREW,SOCKET (CP)SM4.76 S21875001 WASHER S12668001 COLLAR 021670202 NUT,2 SM3.57 100659001 SHOULDER SCREW,SM3.18 021660102 NUT,15M3.18 159111001 SPRING For Horizontal wiper 64 - 9 REF.NO. CODE NAME OF PARTS <For Horizontal wiper> 64-9 S42849001 PRESSER FOOT, XY S42880051 PRESSER BAR, SIDE BAS-311E.311EL.326E.326EL...
Page 144 3-2-1-5 S44760000 AW-VALVE HARNESS,B 3-1-6 S31778000 STOPPER,CYLINDER 3-2-1-6 S44750000 VALVE HARNESS,24V 3-1-7 S31779001 JOINT,CYLINDER S15031008 AIR TUBE,4L=1900 3-1-8 S31776009 CYLINDER COVER 340400001 BEAD BAND 3-1-9 062680512 SCREW,PAN SM4.37-40X5 149287000 CORD HOLDER,7N 3-1-10 S43203000 EM-SWITCH ASSY 3-1-13 S02680001 PLUNGER PIN BAS-311E.311EL.326E.326EL...
Page 145 155510001 TENSION NUT 017821813 BOLT,SM7.94X18 2-1-1-7 146060000 SPRING S15031008 AIR TUBE,L=1900 2-1-1-8 146059001 PRE-TENSION NUT 340400001 BEAD BAND 2-1-1-9 PRE-TENSION SPRING TENSION SPRING 146058001 104525001 2-1-1-10 146206009 THREAD GUIDE DISC PRESSER 149287000 CORD HOLDER,7N 2-1-1-11 144504001 THREAD GUIDE DISC BAS-311E.311EL.326E.326EL...
Page 146 Chapter 10. Option parts Auxiliary device -1-13 -1-12 -1-11 -1-1 -1-2 -1-3 -1-5 -1-7 -1-4 -1-6 -1-9 -1-8 -1-10 -1-3 -1-1 -1-2 -1-7 -1-5 -1-8 -1-6 -1-4 -1-9 -2-2 -2-1 BAS-311E.311EL.326E.326EL...
Page 147 S43696000 VALVE HARNESS,X1 1-1-13 062301616 SCREW,PAN M3X16 6-2-1 S44746000 VALVE HARNESS 146080000 CORD BUSH 6-2-2 S44750000 VALVE HARNESS,24V S44749001 AIR MANIFOLD,4 <Beam-type> S18415101 HALF UNION,Q4M5 S43836001 TR BREAKAGE DETECTOR SET,F S31554009 VALVE SETTING PLATE,4-5 S43977001 TR BREAKAGE DETECTOR ASSY,F BAS-311E.311EL.326E.326EL...
Page 148: Control Block Diagram
B BL GY W GR BK Y BK W BK W BK R W BL GR BR BK BL BK R W BL GR BR BK BL CONTROL PCB BK BK Control box BK R BK Pnevmatic type Air valve BAS-311E.311EL.326E.326EL...
Page 149 O Y GR BL V GY W BK P GR/Y Y/GR Programmer Convertion Y/GR t r a n s - former Filter R BK R BK R BK R BK unit Y/GR Inverter PROGRAMMER Power switch Y/GR Y/GR Power supply plug BAS-311E.311EL.326E.326EL...
Page 150 SERVICE MANUAL BROTHER INDUSTRIES,LTD. NAGOYA,JAPAN Printed in Japan 151-V11, V12, V26 I9080764 1999. 08. B (1)

This manual is also suitable for:

Bas-326e Bas-311el Bas-326el