BAS-343E INSTRUCTION MANUAL Please read this manual before using the machine. Please keep this manual within easy reach for quick reference.
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 lever, and consequently there is always a danger of injury that can be caused by there parts.
2 Notes on safety DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury. CAUTION Installation Machine installation should only be carried out Be sure to wear protective goggles and gloves by a qualified technician.
CAUTION Cleaning Turn off the power switch before starting any Be sure to wear protective goggles and gloves cleaning work, otherwise the machine may operate if the start switch is pressed by mis- when handling the lubricating oil and grease, so that they do not get into your eyes or onto take, which could result in injury. your skin, otherwise inflammation can result. Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and diarrhoea.
3 Warning labels ★ 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. 1 3 5 注 意 高温部 さわるとやけどする ことがある。 CAUTION Moving parts may cause injury. 通電中はさわらない こと。 Operate with safety devices. Turn off main switch before threading, changing bobbin and needle, cleaning etc. CAUTION 4 Heated cover may burn hands.
CONTENTS 1. Name of each parts ..................................................................................................................................... 1 2. Specifications ................................................................................................................................................. 2 3. Preparation ....................................................................................................................................................... 3 3-1. 3-2.
. Sewing ............................................................................................................................................................... 27 7-1. 7-2. Before starting sewing.... ................................................................................................................. 27 Sewing operation ................................................................................................................................ 27 8. Maintenance and inspection ....
1. Name of each parts 1.
2. Specifications 2. Specifications Stitch type Single needle, lock stitch Sewing machine Lock stitch, pattern tacking sewing machine (with large shuttle hook) Maximum pattern size (X-Y) 380 mm wide (X axis) and 280 mm deep (Y axis) Maximum stitch number Max. 20,000 (one pattern) Stitch length 0.05 - 12.
3. Preparation 3. Preparation CAUTION Machine installation should only be carried out Hold the machine head with both hands when by a qualified technician. tilting it back or returning it to its original posi- Contact your Brother dealer or a qualified elec- tion. Furthermore, after tilting back the machine head, do not push the face plate side or trician for any electrical work that may need the pulley side from above, as this could cause to be done.
3. Preparation 3-2. Positioning Decide the position for the sewing machine. Loosen nuts of four level adjusters q. Lower the level adjusters and secure them with nuts w. Turning the level adjuster counterclockwise will raise its height and turning it clockwise will lower it. 3-3. Tilting the sewing machine head 1. Remove screws q at the back of the work table, and remove table cover (rear) w. 2.
3. Preparation 3-4. Connecting the ground wire DANGER Be sure to connect the ground. If the ground connection is not secure, you run the risk of receiving a serious electric shock. ■ Connection method for 3-phase power supply Red White 3-phase power supply Black Yellow/Green ......... Connect to ground 3-5. V-belt tension These should approximately 10 - 12 mm of slack when Vbelt is loaded at 9.8 N (1 kgf). To adjust, loosen the two nuts q, and shift the motor up or down. 9.8 N 10 - 12 mm 3-6.
3. Preparation 3-7. Installing the spool stand Install the spool stand q to the table. 3-8. Installing the programmer (option) [Vertical] 1. Install the programmer support w to the work table with the two screws q. [Flat] 2. Insert the programmer connector r securely into the left side of the operation panel e.
3. Preparation 3-9. Adjustment of air pressure 1. Air pressure should be 0.49 MPa [5 kg/cm2]. The air pressure can be adjusted by pulling up and turning the control knob w on the integrator q. After adjustment is complete, push the control knob w downward to lock it. 2. If water stands in the bottle of the integrator q, turn the drain cock e in the direction indicated by an arrow to drain the water. 3.
4. Preparation 4. Lubrication CAUTION Turn off the power switch before starting lubricating, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury. Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result. Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and diarrhoea.
5. Correct use 5. Fill the lubricator tank w with silicone oil. 5. Correct use 5-1. Selecting the needle and thread Needle Thread Main application DP × 17 #21 #50 -#20 Denim DP × 17 #25 〃 Leather Different needles and threads are used for different sewing applications. Refer to the table at left for details on which needle. 5-2.
5. Correct use 5-3. Threading the upper thread CAUTION Turn off the power switch before threading the thread, otherwise the machine may operate if the foot switch is depressed by mistake and serious injury could result. [When using cotton thread and spun yarn] 40 mm 〈With synthetic thread〉 〈Threading in the upper thread breakage detector〉 Real the thread from above once or twice as the above figure. ■ Thread the upper thread correctly as shown in the illustration above.
5. Correct use 5-4. Winding the lower thread CAUTION Do not touch or place anything against any of the moving parts while winding the lower thread, otherwise personal injury or damage to the machine may result. 1. Place the bobbin all the way onto the shaft. 2. Thread the thread as shown in the illustration at left, wind the thread around the bobbin several times in the direction of the arrow, and then press the bobbinpresser q. 3. Turn on the power switch.
5. Correct use 5-5. Replacing the bobbin case and threading the thread CAUTION Turn off the power switch before removing and replacing the bobbin case, otherwise the machine may operate if the foot switch is depressed by mistake and serious injury could result. 30 mm 1. Pull the shuttle race cover q forward and then open the cover. 2. Lift the bobbin case latch and remove the bobbin case. 3. Insert a new bobbin into the bob- 4.
5. Correct use 5-6-2. Lower thread tension Weaker 5-6-3. Upper thread tension Stronger Stronger Weaker Stronger Weaker Set the lower thread tension to as weak a tension as possible and so that the bobbin case drops by its own weight when the end of the thread is held. Turn the adjusting screw q to adjust the tension. NOTE If the lower thread tension is too weak, it may not be possible to cut the lower thread properly during thread trimming.
5. Correct use 5-6-6. Pretension tension 1. Raise the work clamp q and open the main tension disc w. The thread take-up spring e should not operate when the thread is pulled in the direction of the arrow. 2. Set the thread tension for the thread breakage detector pretension r to approx. 5 g. Weaken the thread tension for the machine head pretension t as much as possible.
6. Panel operation 6. Panel operation 6-1. Explanation of panel t q 電源 POWER BAS-300E series プログラムNO. PROGRAM NO. メニュー MENU u w\ i o e !0 読/書 R/W !1 横倍率 X-SCALE 縦倍率 Y-SCALE スピード SPEED 下糸カウンター B.T. COUNTER スプリット NＯ. SPLIT NＯ. 下糸設定 B.T. SET 下糸交換 B. . CHANGE B.T. テスト TEST ステッ テップバック STEP BACK r y q POWER indicator ................... When the power is turned on, the indicator lights to show that t he power is on. w PROGRAM No. display .......... Displays the program number 00 - 99.
6. Panel operation t 電源 POWER BAS-300E series プログラムNO. PROGRAM NO. !0 読/書 R/W 下糸設定 B.T. SET メニュー MENU !1 !3 横倍率 X-SCALE 縦倍率 Y-SCALE スピード SPEED 下糸カウンター B.T. COUNTER スプリット NＯ. SPLIT NＯ. y 下糸交換 B.T.. CHANGE B. !4 テスト TEST ステッ テップバック STEP BACK !6 !2 !5 !7 !0 Bobbin Thread COUNTER .... Illuminates when bobbin thread counter mode has been selected using the indicator ................................. menu switch y. !1 SPLIT NO. indicator ............... Illuminates when split No.
6. Panel operation 6-2. Using the floppy disk Compatible types of floppy disk Data type 300E type No. of stitches programmed 20,000 stitches per pattern 100 pattern Up to a maximum of 360,000 stitches Tajima embroidery data 50,000 stitches per pattern Old 300A type Old 300 data Data resolution Disk Format 0.05 mm/pulse Yes 2HD 1.44 MB 0.
6. Panel operation Unlocked writing possible Window open Locked writing possible 1. Turn on the power switch q. The POWER indicator w will illuminate and the machine model number will appear on the display screen. 2. Hold the disk e with the label up and the metal shutter to the front, and insert the disk into the drive r. It will click into place. 3. To eject the disk, press the eject buttont t.
6. Panel operation 6-3. Using the program R/W (Read/Write) switch Programmed stitch patterns stored on floppy disk can be read into memory, and newly programmed patterns can be written to disk for permanent storage and later recall. Insert the floppy disk q containing or which is to contain the programmed stitch pattern. To READ a pattern to memory Press the program select switch e on the operation panel. The program number will then appear in the PROGRAM NO. display w.
6. Panel operation 6-4. Using the TEST switch (Checking the sewing pattern) Use the TEST switch to begin sewing again from any desired point when the thread breaks or the bobbin thread runs out. テスト TEST ステップバック STEP BACK !5 !7 !6 1. Press the TEST switch !5. The test indicator !6 will light. 2. If the work clamp is raised, depress the work clamp lifter pedal w to lower the work clamp. 3. Press the starting pedal q.
6. Panel operation 6-5. Using the emergency stop switch Press the emergency stop switch to immediately stop the sewing machine during actual sewing or when in the test mode. Clearing the error 1. Turn the EMERGENCY STOP switch q clockwise and then pull it forward to release it. 2. Press the STEP BACK switch w on the operation panel. (The buzzer will stop sounding.) 3.
6. Panel operation 6-6. Adjusting the sewing SPEED control The sewing speed can be changed in steps of 100 spm to the appropriate speeds for each stitch length setting. 1. Press the MENU switch y until the SPEED indicator o illuminates. メニュー MENU o 2. While pressing the STEP BACK switch !7, turn the dial !2 until the desired speed is displayed. 横倍率 X-SCALE 縦倍率 Y-SCALE スピード スピ SPEED 下糸カウンタ 下糸 カウンター B.T.. COUNTER B. スプリット NＯ. SPLIT N NＯ. y • The display will change in steps of 10 spm.
6. Panel operation 6-8. Using the bobbin thread counter Set the bobbin thread counter to display the number of pieces of the selected pattern which can be sewn with the amount of thread on the bobbin to avoid running out of bobbin thread in the middle of a patern. t 電源 POWER BAS-300E series プログラムNO. PROGRAM NO. !0 読/書 R/W 下糸設定 B.T. SET メニュー MENU !3 横倍率 X-SCALE 縦倍率 Y-SCALE スピード SPEED 下糸カウンター B.T. COUNTER スプリット NＯ. SPLIT NＯ. y 下糸交換 B. . CHANGE B.T. !4 テスト TEST !2 ステッ テップバック STEP BACK !7 1.
6. Panel operation 6-9. Using production counter Both PRO. NO. and B.T. COUNTER displays are available for the five-digit PRODUCTION counter. t 電源 POWER BAS-300E series プログラムNO. PROGRAM NO. w\ !0 読/書 R/W 下糸設定 B.T. SET メニュー MENU !1 !3 横倍率 X-SCALE 縦倍率 Y-SCALE スピード SPEED 下糸カウンタ 下糸 カウンター B.T.. COUNTER B. スプリット NＯ. SPLIT N NＯ. y 下糸交換 B. . CHANGE B.T. !4 テスト TEST ステッ テップバック STEP BACK !6 !2 !5 !7 1. While pressing the TEST switch !5, press the B.T.SET switch !3 The B.T.
6. Panel operation 6-10. Using single split mode By using single split mode, it is possible to change up to 100 patterns immediately. t メニュー MENU 横倍率 X-SCALE 縦倍率 Y-SCALE スピード SPEED 下糸カウンター B.T. COUNTER スプリット NＯ. SPLIT NＯ. y テスト TEST ステッ テップバック STEP BACK !2 !7 1. Move DIP switch B No. 1 to the ON position. This will activate single split mode. (Refer to "DIP SWITCH SETTINGS" on 10.) 2. Turn on the power read in the patterns which have been programmed for split sewing. 3.
6. Panel operation 6-11. Shifting a stitch pattern • Programs which have already been programmed can be moved up, down and to the left and right. (However, such patterns will be reset if the power supply is turned off or the program number is changed.) • The feed position can be set to the any position desired. t メニュー MENU u i ‡ !0 読/書 R/W 横倍率 X-SCALE 縦倍率 Y-SCALE スピード SPEED 下糸カウンター B.T. COUNTER スプリット NＯ. SPLIT NＯ. 電源 POWER 下糸設定 B.T.. SET 下糸交換 B.T.
7. Sewing 7. Sewing CAUTION Turn off the power switch at the following times, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury. • Threading • When replacing the bobbin and needle • When not using the machine and when leaving the machine unattended Do not touch any of the moving parts or press any objects against the machine while sewing, as this may result in personal injury or damage to be machine. 7-1. Before starting sewing....
7. Sewing 5. Depress the work clamp lift pedal y to raise the cassette holding pin. 6. When the cassette is inserted into the mounting support, the sensor will detect it automatically and the cassette will be clamped in place. At this time, the auxiliary work clamp will be lowered. 7. Press the starting pedal u. NOTE The work clamp will return to the origin, and will then advance to the sewing start position and blinking will stop. This is only required the first time a program is sewing. 8.
8. Maintenance and inspection 8. Maintenance and inspection CAUTION Turn off the power switch before starting any cleaning work, otherwise the machine may operate if the foot switch is depressed by mistake, which could result in injury. Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get into your eyes or onto your skin, otherwise inflammation can result.
8. Maintenance and inspection 3. If using the liquid cooling tank q, fill it with silicon oil (100 cs). 4. If oil is to be mixed with the air in the needle cooler, remove the black cap and fill the oiler w with silicone oil. 8-3. Draining the oil 1. Remove and empty the waste oil container q whenever it is full. 2. After emptying the waste oil container q, screw it back into its original position. 8-4.
8. Maintenance and inspection 8-5. Cleaning the eye guard Wipe the eye guard clean with a soft cloth. NOTE Do not use solvents such as kerosene thinner to clean the eye guard. 8-6. Checking the needle Always check that the tip of the needle is not broken before starting sewing.
9. Standard adjustments 9. Standard 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 switch and disconnect the power cord from the wall outlet at the following times, otherwise the machine may operate if the foot switch is depressed by mistake, whicn could result in injury.
9. Standard adjutsments 9-3. Adjusting the needle clearance 0.01 - 0.08mm Turn the machine pulley to align the tip of the rotary hook with the needle center line. Then loosen the set screw q and turn the eccentric shaft w to adjust so that the clearance between the needle and the rotary hook is 0.01 - 0.08 mm. 9-4. Adjusting the driver needle gurard Turn the machine pulley to align the tip of the rotary hook with the needle center line.
9. Standard adjustments 9-6. Adjusting the movable knife Needle Plate Loosen the nut w and move thread trimmer rod L e to the left or right to adjust so that the V section A of the movable knife q is aligned with the index mark B on the needle plate when the machine is at the stop position. ■ Replacing the movable and fixed knives 1. Remove screws q and w, and needle plate e. Now disconnect the thread cutter connecting rod r from stud t.
9. Standard adjutsments Movable knife washer 2. Remove the movable knife, and replace it with a new movable knife. Now check the cutting edge of the movable knife o and the fixed knife !0. If necessary, use the provided movable knife washer (T=0.4, T=0.5, T=0.6) to adjust the knives so that they cut properly. NOTE: A. After the movable knife and fixed knife are properly engaged, tighten the screw. B. Turn the movable knife (in the direction of the arrow) while the screw is still tightened. C.
9. Standard adjustments 4. Fit the thread cutter connecting rod u on connecting lever pin i, and install needle plate y. * When fitting the connecting rod u on the connecting lever pin i and before tightening screws r and t, move the needle plate back and forth a little bit to confirm that the movable knife o is pulled by the connecting rod u. 9-7. Presser foot adjustment Turn the pulley by hand to lower the presser foot to the down position, and then proceed with the steps below. 1.
9. Standard adjutsments 9-8. Changing the presser foot lift ■ Standard presser foot q lift is 3 mm (max. 8 mm). 3 - 5 mm 0.5 -1 mm Adjusting presser foot lift to 3 - 5mm 1. Loosen the stud screw w and open the intermittent cover e. 2. Loosen the nut r and adjust the intermittent presser connecting rod t pisition. (When the intermittent presser connecting rod is raised, the lift will increase. When lowered, the lift will Adjusting presser foot lift to 5 - 8 mm 1.
9. Standard adjustments 9-9. Wiper adjustment ■ For vertical wiper (standard) w w 112 mm t y approx. 2 mm 15 mm Fig. A 1. When the thread wiper solenoid plunger q is driven to the full stroke, the wiper w should be 15 mm in front of the needle center. Loosen screws e and shift the entire solenoid bracket r up or down to adjust. The standard height from the solenoid bracket r bottom to the needle plate top is approximately 112 mm. 2.
9. Standard adjutsments 9-11. Adjustment of air pressure 1. Air pressure should be 0.49 MPa [5 kg/cm2]. The air pressure can be adjusted by pulling up andturning the control knob w on the integrator q. After adjustment is complete, push the control knob w downward to lock it. 2. If water stands in the bottle of the integrator q, turn the drain cock e in the direction indicated by an arrow to drain the water. 3.
9. Standard adjustments 9-13. Checking the input sensor and DIP switch input メニュー MENU r u 読/書 R/W q 横倍率 X-SCALE 縦倍率 Y-SCALE スピード SPEED 下糸カウンター B.T. COUNTER スプリット NＯ. SPLIT NＯ. 下糸設定 B.T. SET 下糸交換 B. . CHANGE B.T. テスト TEST ステッ テップバック STEP BACK A OFF 1 2 3 4 5 6 7 8 プログラムNO. PROGRAM NO. 電源 POWER 1 2 3 4 5 6 7 8 t BAS-300E series OFF B e y\ w\ 1. When the SPLIT NO.
9. Standard adjutsments 9-14. Checking the input voltage 1. Turn on the power switch. 2. Press the menu switch q until the X-SCALE indicator w illuminates. スプリット NＯ. 横倍率 SPLIT NＯ. X-SCALE q w 3. While pressing the TEST switch e, press the R/W switch r. テスト TEST 読/書 R/W e\ r 4. If the input voltage is normal, the input voltage conditions will be shown in the display as indicated at right. 200-V specifications 090 ∼ 110 “100” is displayed when the input voltage is 200 V.
10. DIP switch 10. DIP switch NOTE When changing DIP switch, the power must be off. 10-1. Panel DIP switch functions ■ DIP switch A SW No. A - 1 When ON After sewing is finished, the cassette is not ejected automatically, but it is ejected when the work clamp pedal is depressed. • Various setting combinations for DIP switch No. 2, No. 3 and No. 4 can be used to change the way the work clamp is raised and lowered. • The operation mode can be changed using the two-stage work clamp switch.
10. DIP switch ■ DIP switch A SW No. When ON A - 5 After sewing is completed, work clamp does not automatically rise (only in split mode) A - 6 Clamping force output is produced (Inner clamping device available as an option) A - 7 After the cassette is clamped automatically, sewing operations start automatically. A - 8 Thread breakage detector device is activated (available as an option) ■ DIP switch B SW No.
10. DIP switch 10-2. DIP switches inside the control box DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury.
10. DIP switch ■ DIP switch D SW No. When ON D - 1 The first two stitches at the sewing start will be sewn at low speed (approx. 260 rpm) D - 2 The last two stitches at the sewing end will be sewn at low speed (approx. 260 rpm) D - 3 − D - 4 The last two stitches at the sewing end will be sewn at low speed (approx.
11. Changing special functions using the memory switches 11. Changing special functions using the memory switches The functions of the switches on the operation panel can be changed to carry out special functions. * All of the memory switches are set to OFF at the time of shipment. NOTE The following are special uses. All of the memory switch is usually set to OFF. t 電源 POWER BAS-300E series プログラムNO. PROGRAM NO. e r 読/書 R/W メニュー MENU 横倍率 X-SCALE 縦倍率 Y-SCALE スピード SPEED 下糸カウンター B.T. COUNTER スプリット NＯ.
11. Changing special functions using the memory switches ■ Memory Switches (00 ∼ 0F) SWNo. When ON memo-00 When moving to the home position, the feed plate moves in the order X→Y and the start position moves in the order Y→X. memo-01 When moving to the home position, the feed plate moves in the order Y→X and the start position moves in the order X→Y. memo-02 The forward position becomes the home position, and movement is in the order Y→X and X→Y. Used for attaching buttons.
11. Changing special functions using the memory switches ■ Memory Switches (10 ∼ 1F) SW No. When ON memo-10 Milling device can be used (available as an option) memo-11 Bobbin thread counter and production counter are adjusted when thread is trimmed memo-12 Work clamp is lowered by pressing work clamp first stage switch twice, without using work clamp second stage switch. When DIP switch A-2 is ON, work clamp lowers in the order right left; when OFF, work clamp lowers in the order left right.
11. Changing special functions using the memory switches ■ Turn the dial while pressing the STEP BACK switch to change the values. SW No. Possible setting range Units Initial value Explanation memo-30 1∼999 ×10ms 10 Time until feed mechanism starts moving after work clamp has lifted. memo-31 1∼4 − 1 Changes the feed speed. 1 (Fast) 4 (Slow) Changes the possible sewing speed for a given stitch length.
12. Error codes 12. Error codes NOTE • If an operation problem occurs, a buzzer will sound and an error code will appear on the display screen; if a programmer is connected, an error message will appear on the screen. • Wait 10 seconds or more after turning the power off before turning it back on again. Code Cause Remedy E.10 Emergency stop switch was pressed. Press the emergency stop switch once more to cancel. E.11 Emergency stop switch was pressed during sewing.
12. Error codes ■ Error codes (Bobbin changer) If an operation problem occurs, a buzzer will sound and an error code will appear on the display screen. Code Cause Remedy E.71 If the sensor on the underside of the bobbin 1.Check the changer motor and the wires connected cassette does not activate when the bobbin to the motor. changer is rotated: 2. Check the sensor at the back of the cassette and the wires connected to the sensor. 1. The changer motor does not operate correctly. 2.
12. Error codes ■ Error codes[E.9 ＊ ] ∼ [E.F ＊ ] DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box. Touching areas where high voltages are present can result in severe injury. Code Remedy Cause E.90 Abnormal drop in power supply voltage, or power was Turn off the power and check the input voltage.
13. Gauge parts list according to subclasses 13. Gauge parts list according to subclasses The following parts are available for the BAS-343E for adding further flexibility to the range of applications. Model BAS-343E Subclass -21 Use Part name Heavy-weight materials Needle hole plate Needle hole plate E （φ2.
14. Troubleshooting 14. Troubleshooting Problem Cause Check Remedy Page 6 Insufficient air pressure Auxiliary work clamp regulator setting Adjust the air pressure. Presser lifter air tube is bent or damaged. Presser lifter air tube Straighten the bend in the tube or replace the tube. Work clamp operation is sluggish. Sliding part of the work clamp lubrication Grease the sliding part of the work clamp. Presser lifter air tube is bent or damaged.
14. Troubleshooting Problem Upper thread breaks. Lower thread breaks. Skipped stitches Cause Check Upper thread tension is too strong. Upper thread tension Adjust the upper thread tension. 13 Needle is installed incorrectly. Needle direction Install the needle so that the groove is facing forward. 9 Thread is too thick for the needle. Thread and needle Use the correct thread for the needle.
14. Troubleshooting Problem Cause Poor seam finish on reverse side of material. Incorrect thread tightness. Shuttle race thread guide position Adjust the position of the shuttle race thread guide. 33 Needle bar lift amount Adjust the needle bar lift amount. 32 The movable knife does not pick up the thread because of skipped stitches at the sewing end. Skipped stitches at sewing end Refer to "Skipped stitches occur". Movalbe knife position is incorrect.
14. Troubleshooting Problem Unstable upper thread length Unstable needle up stop position Cause Check Remedy Page Improper tension and height of thread take-up spring Thread take-up spring tension and height Adjust the tension and height of the thread take-up spring. 13 Improper adjustment of sub tension sub tension Adjust the sub tension. 12 Needle up stop position fluctuates. See "Unstable needle up stop position." Fixed knife is blunt.
15. Options 15. Option ■ Programmer assy Used to create sewing patterns for the BAS-300E series. It can also be used to display error messages. ■ Milling device This device can be used to cut a variety of objects such as grooves, holes, and outline shapes in plastic or aluminum sheets. ■ WP stitch device Increases the stitch creation range for perfect stitches. ■ Auto bobbin changer When the amount of bobbin thread remaining becomes low, this device automatically replaces the bobbin.
INSTRUCTION MANUAL BROTHER INDUSTRIES, LTD. NAGOYA, JAPAN Printed in Japan 151-V43 S93V43-002 1999.02.
