INSTRUCTION MANUAL BAS-300G-484 BAS-300G-484 SF 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 these parts.
SAFETY INSTRUCTIONS [1] Safety indications and their meanings This instruction manual and the indications and symbols that are used on the machine itself are provided in order to ensure safe operation of this machine and to prevent accidents and injury to yourself or other people. The meanings of these indications and symbols are given below. Indications DANGER The instructions which follow this term indicate situations where failure to follow the instructions will result in death or serious injury.
[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 control box cover. Touching areas where high voltages are present will result in serious injury from electric shocks. WARNING Do not allow any liquids to get onto this sewing machine, otherwise fire, electric shocks or operating problems may occur.
CAUTION Sewing This sewing machine should only be used by operators who have received the necessary training in safe use beforehand. If using a work table which has casters, the casters should be secured in such a way so that they cannot move. The sewing machine should not be used for any applications other than sewing. Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result.
[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.
Motor cover Tension release solenoid cover Solenoid cover Inner cover L Outer cover Fixed cover L Motor cover L Thread take-up cover Inner cover R Outer cover Fixed cover R Eye guard Motor cover R Finger guard Hook cover Gas spring support cover 4630M 4631M BAS-300G-484, BAS-300G-484 SF v
CONTENTS 1. NAMES OF MAJOR PARTS ................ 1 2. SPECIFICATIONS ................................ 2 3. INSTALLATION .................................... 3 3-1. Table processing diagram ................................ 3 3-2. Installing the control box................................... 4 3-3. Installing the oil pan.......................................... 4 3-4. Installing the machine head.............................. 5 3-5. Tilting the sewing machine head ...................... 9 3-6.
8. SEWING................................................ 50 11. TABLE OF ERROR CODES .............. 68 8-1. Sewing .............................................................. 50 8-2. Using the STOP switch..................................... 51 8-3. Using the thread wiper switch........................... 51 12. TROUBLESHOOTING ....................... 73 13. 7-SEGMENT DISPLAY ...................... 77 9. CLEANING ........................................... 52 9-1. Cleaning the rotary hook ..........
1. NAMES OF MAJOR PARTS 1. NAMES OF MAJOR PARTS 4632M (1) Power switch (2) Control box (3) CF slot (4) Operation panel (5) Work clamp switch (6) Start switch (7) STOP switch (8) Thread wiper switch (9) Pulley (10) Cotton stand (11) Solenoid valve TM CF 1 Safety devices: (12) Finger guard (13) Eye guard (14) Thread take-up cover (15) Motor cover (16) Solenoid cover (17) Hook cover is a trademark of SanDisk Corporation.
2. SPECIFICATIONS 2. SPECIFICATIONS With intermittent presser foot 4633M Sewing machine Lock stitch pattern tacking sewing machine Stitch formation Single needle lock stitch Max. sewing speed 2,200 sti/min Max. sewing area (XxY) 130 x 60 mm Feed mechanism Stitch length No. of stitches Maximum no. of stitches No. of sewing data items that can be stored Work clamp lift method Intermittent feed, pulse motor drive 0.05 − 12.
3. INSTALLATION 3. INSTALLATION CAUTION 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 weighs approximately 90 kg. The installation should be carried out by two or more people. Do not connect the power cord until installation is complete. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.
3. INSTALLATION 3-2. Installing the control box Remove the eight screws (1), and then remove the control box cover (2). (3) Control box (4) Bolts [4 pcs.] (5) Plain washers [4 pcs.] (6) Spring washers [4 pcs.] (7) Nuts [8 pcs.] 1840B (8) Power switch (9) Wood screws [2 pcs.] (10) Staples [4 pcs.] Operator 1841B 3-3. Installing the oil pan (1) (2) (3) (4) Oil pan Nails [7 pcs.] Rubber cushions [4 pcs.
3. INSTALLATION 3-4. Installing the machine head (1) Pins [2 pcs.] (2) Set screws [2 pcs.] (3) Hinge rubber assemblies [2 pcs.] Place the machine head gently on top of the oil pan and the rubber cushions. Pulse motor Approx. 20 mm NOTE: • Be careful not to get the cords clamped between the machine head and the oil pan. • When holding the machine head, do not hold it by the pulse motor. This may cause problems with operation of the pulse motor. Approx.
3. INSTALLATION (10) Auxiliary plate (11) Bolts with washer [4 pcs.] Loosen the four bolts with washer (11), and adjust so that the auxiliary plate (10) is 0 to 0.5 mm above the needle plate. Needle plate NOTE: Install the auxiliary plate (10) so that it is horizontal. If the auxiliary plate (10) is lower than the needle plate, the feed plate may get caught on the needle plate.
3. INSTALLATION Be sure to install so that the side with “UP” on it is facing upward. (12) Gas spring holders [2 pcs.] (13) Spacer (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) Spring washers [2 pcs.] (25) Nuts [2 pcs.
3. INSTALLATION Oil pan 4641M • Gently return the machine head to its original position. • Loosen the screw (30). Move the machine head switch (31) to the position shown in the illustration, and then secure the machine head switch (31) with the screw (30) and the accessory M3x16 screw (32). • Check that the machine head switch (31) is turned on as shown in figure . NOTE: If the machine head switch is not turned on, errors "E050", "E051" and "E055" will be generated.
3. INSTALLATION 3-5. Tilting the sewing machine head 4642M 4643M 1. Move the presser arm assembly (1) as far as it will go in the direction of the arrow in the illustration (to the right when looking from the front of the sewing machine). 2. Stand at the left side of the table, and gently tilt the machine head towards you. NOTE: Always be sure to move the work clamp arm (1) all the way to the right before tilting back the machine head.
3. INSTALLATION 3-7. Installing the pneumatic unit 1. Install the pneumatic unit underneath the work table. (1) (2) (3) (4) Solenoid valve assembly Washers [2 pcs.] Wood screws [2 pcs.] Rubber hose NOTE: Make sure that the pneumatic unit does not touch the control box or the work table leg. 2. Disconnect the connector (5) of the valve harness. 3. Connect the connector (6) of the thread wiper switch to the connector (5). 4644M After installing the pneumatic unit, adjust the air pressure.
3. INSTALLATION 3-8. Adjusting the speed controller You can adjust the lifting and lowering speeds for the work clamps using the knobs (1) and (2) on valves 1 and 2. Valve 1 adjusts the right work clamp (3), and valve 2 adjusts the left work clamp (4). The knobs (1) and (2) should be adjusted so that the left and right work clamps operate at the same speed. • When the upper knob (1) is tightened, the lifting becomes slower.
3. INSTALLATION 3-9. Connecting the cords 1. Gently tilt back the machine head. 2. Pass the cord bundle through the hole in the work table. 3. Loosen the two screws (1), and then open the cord presser plate (2) in the direction of the arrow and pass the cord bundle through the opening together with the following cords. • Two-pedal foot switch (3) • Operation panel (Do not pass the ground wires through the hole.) • Solenoid valve assembly 4. Securely connect the connectors as indicated in the table below.
3. INSTALLATION Press the tab. NOTE: Route the X, Y and work clamp pulse motor harnesses so that they do not touch the PMD P.C. *1: *2: Connector Connection location on power supply motor P.C. board Cord clamp/cable tie Machine head memory 7-pin P3 (HEAD-M) (4) Upper shaft motor 3-pin P4 (UVW) (5) Synchronizer 14-pin P5 (SYNC) (5), (6) Connector 4651M Be sure to make the ground connection. (Refer to "3-10.
3. INSTALLATION 5. Close the cord presser plate (2) in the direction of the left arrow, and secure it by tightening the two screws (1). NOTE: Close the cord presser plate (2) securely so that no foreign objects, insects or small animals can get inside the control box. 6. Check that the cords do not get pulled, and then gently return the machine head to its original position. 2149B 3-10. Connecting the ground wire CAUTION Be sure to connect the ground.
3. INSTALLATION 3-11. Connecting the power cord 1. Attach an appropriate plug to the power cord (1). (The green and yellow wire is the ground wire.) 2. Insert the plug into a properly-grounded AC power supply. * The inside of the control box uses single-phase power. NOTE: Do not use an extension cord. If this is not observed, it may cause problems with correct operation.
3. INSTALLATION 3-13. Installing the eye guard CAUTION Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result. (1) (2) (3) (4) (5) Screw (loosen) Eye guard (tilt forward) Eye guard assembly Plain washers [2 pcs.] Screws [2 pcs.] After installing the eye guard assembly (3), return the eye guard (2) to its original angle, and then tighten the screw (1) to secure it in place.
3. INSTALLATION 3-14. Installing the motor cover 4653M (1) (2) (3) (4) (5) (6) (7) (8) (9) Motor cover R Screws [4 pcs.] Motor cover L Screws [4 pcs.] Motor cover Screws [2 pcs.] Solenoid cover Screws [2 pcs.] Screws [2 pcs.] NOTE: Be careful not to clamp the cords when installing the motor cover and the solenoid cover.
3. INSTALLATION 3-15. Lubrication CAUTION Do not connect the power cord until lubrication is complete. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result. 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. If the oil and grease get into your eyes or onto your skin, inflammation can result.
3. INSTALLATION 3-16. Installing the machine head fixing bolt When transporting the sewing machine, secure the machine head to the table with the machine head fixing bolt. (1) Plain washer (2) Machine head fixing bolt NOTE: When operating the sewing machine, remove the machine head fixing bolt.
4. PREPARATION BEFORE SEWING 4. PREPARATION BEFORE SEWING 4-1. Installing the needle CAUTION Turn off the power switch before installing the needle. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result. 1. Loosen the set screw (1). 2. Insert the needle (2) in a straight line as far as it will go, making sure that the long groove on the needle is at the front, and then securely tighten the set screw (1). Front Long groove 4660M 4-2.
4. PREPARATION BEFORE SEWING Threading mode is safe because the sewing machine will not start even when the foot switch is depressed. 1 Turn on the power switch. 4421Q 2 Press the THREAD/CLAMP key. All indicators switch off • The work clamp (and the intermittent presser foot*) will be lowered. • The tension discs will open. 3 4 THREAD/CLAMP indicator illuminates MENU indicator switches off Threading the thread.
4. PREPARATION BEFORE SEWING 4-4. Winding the lower thread CAUTION Do not touch any of the moving parts or press any objects against the machine while winding the lower thread. Injury or damage to the sewing machine may result. 1. Place the bobbin onto the bobbin winder shaft (1). 2. Thread the thread as shown in the illustration, wind the thread around the bobbin several times, and then press the bobbin presser arm (2). 3. Turn on the power switch. 4.
4. PREPARATION BEFORE SEWING 4-5. Installing the bobbin case CAUTION Turn off the power switch before installing the bobbin case. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result. 4664M 4665M Pull 3230Q 1. Pull the hook cover (1) downward to open it. 2. While holding the bobbin so that the thread winds to the left, insert the bobbin into the bobbin case. 3.
4. PREPARATION BEFORE SEWING 4-7. Thread tension [Thread tension reference] Upper thread #4 or similar Lower thread #4 or similar Upper thread tension (N) 3.0 − 3.5 Lower thread tension (N) 1.2 − 1.5 Pre-tension (N) 0.3 − 0.6 Needle DP x 17 #25 Normal sewing speed 1,300 sti/min 4-7-1. Lower thread tension Adjust the lower thread tension by turning the adjusting screw (1). Weaker Stronger 3185Q 4-7-2. Upper thread tension 1.
4. PREPARATION BEFORE SEWING 4-8. Home position detection 4667M Before starting home position detection, check that the needle bar is at its highest position. Turn the pulley (1) in the direction of the arrow until the ridge at the bottom of the thread take-up (2) is aligned with the { mark on the arm. Aligned 4668M 4421Q 1. Turn on the power switch. The power indicator (3) will illuminate, and the model name [bro] will appear in the PROGRAM No.
5. USING THE OPERATION PANEL (BASIC OPERATIONS) 5. USING THE OPERATION PANEL (BASIC OPERATIONS) 5-1. Name and function of each operation panel item 4435Q (1) Power indicator Illuminates when the power is turned on. (2) CAUTION indicator Illuminates when an error occurs. (3) RESET key Used to reset errors. (4) TEST key Used to start test mode. (5) TEST indicator Illuminates when the TEST key (4) has been pressed. (6) THREAD/CLAMP key Used to start threading mode or work clamp height setting mode.
5. USING THE OPERATION PANEL (BASIC OPERATIONS) 4435Q (12) SPEED indicator Illuminates when the SELECT key (15) is pressed to shown the sewing speed setting. (13) COUNTER indicator Illuminates when the SELECT key (15) is pressed to shown the lower thread or production counter setting. (14) SPLIT No. indicator Illuminates when the SELECT key (15) is pressed to show the split setting when split data (for specifying a pause while the program is running) exists.
5. USING THE OPERATION PANEL (BASIC OPERATIONS) 5-2. Loading sewing data Refer to "7-1. Notes on handling CF cards (sold separately)" for details on using CF cards. 1 With the power turned off, insert the CF card into the CF slot. NOTE: • Make sure the CF card is facing the correct way when inserting it. • Always be sure to keep the cover closed except when inserting and removing the CF card. If this is not done, dust may get inside and cause problems with operation. 4453Q 2 Turn on the power switch.
5. USING THE OPERATION PANEL (BASIC OPERATIONS) 5-4. Setting the X-scale and Y-scale The scales are set to 100 (%) at the time of shipment from the factory. 1. Press the SELECT key (1) so that the X-SCALE indicator (2) (for X-scale setting) or the Y-SCALE indicator (3) (for Y-scale setting) is illuminated. • The setting value (%) will appear in the menu display (4). * When memory switch no. 402 is set to "ON", the settings will be displayed in units of mm. 2.
5. USING THE OPERATION PANEL (BASIC OPERATIONS) 5-6. Checking the sewing pattern Use test feed mode to check the needle movement with only the feed mechanism operating. Check that the needle hole does not come out from the frame of the work clamp. 1 Press the TEST key. TEST indicator illuminates 2 Select the program number to be checked, and then set the X-scale and the Y-scale. • The program number will flash.
5. USING THE OPERATION PANEL (BASIC OPERATIONS) 5-7. Setting the height of the intermittent presser foot (-484 SF specifications only) You can use the operation panel to change the setting value for the intermittent presser foot height. 1 Press the THREAD/CLAMP key. The sewing machine will switch to threading mode. • " 1" will appear in the PROGRAM No. display and the intermittent presser foot (1) will drop.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-1. List of advanced functions While holding down the TEST key, press the corresponding combination key. 4488Q 1 Memory switch setting mode Refer to "6-2. Setting memory switches". 4489Q 2 Lower thread counter setting mode Refer to "6-4. Using the lower thread counter". 4490Q 3 Production counter setting mode Refer to "6-5. Using the production counter".
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-2. Setting memory switches 1 While pressing the SELECT key, turn on the power switch. * Keep pressing the SELECT key until the model name is displayed and the buzzer beeps once. All indicators switch off or With the power turned on, press the TEST key and the TENSION/WIND key simultaneously. • The memory switch number will appear in the PROGRAM No. display, and its setting value will appear in the menu display.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-3. List of memory switch settings No. 001 002 100 200 300 400 401 402 403 Setting Setting items range Work clamp lift timing after sewing is completed OFF Lifts at the final stitch position. ON Lifts after moving to the sewing start position. Separate-type work clamp drop operation (pneumatic work clamp specifications) 0 Left and right work clamp drop at the same time. 1 Work clamp drops in the order left → right.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-4. Using the lower 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 sewing a pattern. 1 While pressing the TEST key, press the key. • The initial value which was set previously will appear in the menu display.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-5. Using the production counter 1 While pressing the TEST key, press the key. • The counter value that was previously set will appear as a 7-digit number in the PROGRAM No. display and the menu display. TEST indicator and SPEED indicator illuminate COUNTER indicator flashes 2 4464Q 4465Q or key to set the counter value. Press the • The counter value can be set to between "000" "0000" and "999" "9999".
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-6. Setting the split number If split data (data that causes sewing to pause) exists within a single program, the numbers that are used to specify the patterns that are separated by split data are called split numbers. Pattern 1 Pattern 1: Split No. 1 Pattern 2: Split No. 2 Pattern 3: Split No. 3 Pattern 2 4964Q Pattern 3 1. Press the or key (1) to select a program number for a program that contains split data.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-7. Using user programs Up to 50 different combinations of settings including program no., X-scale, Y-scale, sewing speed, work clamp height and intermittent presser foot height can be memorized as user programs (U1 to U50). If you are sewing certain patterns over and over again, it is useful to record the settings for these patterns into a user program. User programs are enabled when memory switch no. 400 is set to "ON".
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6 Next, set the intermittent presser foot height. * This setting is only applicable to -484 SF specifications. For -484 specifications, proceed to step 7. Press the SELECT key. Press the or key to set the intermittent presser foot height to be recorded. 4969Q THREAD/CLAMP indicator flashes 7 Press the SELECT key. • If setting further user programs, select the user program number and then repeat steps 2 to 7.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 1. Press the or key (1) to select the user program number that you would like to use. • If the user program number is flashing, depress the work clamp switch (2) to lower the work clamp, and then depress the start switch (3). (The work clamp will move to the sewing start position.) • User programs U1 to U10 can be selected directly using function keys F1 to F4 (4). (Refer to "6-9. Direct selection".) 2.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-8. Using cycle programs Sewing patterns that have been recorded in user programs can be recorded in up to nine cycle programs (C-1 to C-9). One cycle program can contain up to a maximum of fifteen steps. When sewing the sewing patterns in numerical order, it can be useful to record them in a cycle program beforehand. Cycle programs are enabled when memory switch nos. 400 and 401 are set to "ON".
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 5 To record another cycle program, repeat steps 2 to 4. 6 End cycle program recording mode. Press the TEST key. This completes the recording of cycle programs. • The cycle program number will flash in the PROGRAM No. display, and the sewing machine will switch to home position detection standby. 4439Q TEST indicator switches off, MENU indicator illuminates 1.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 1 While pressing the TEST key, press the SELECT key. • Switch to user program recording mode. Check that the menu indicators are flashing. 4970Q TEST indicator illuminates, MENU indicator flashes 2 Press a function key from F1 to F4. • Switch to cycle program recording mode. Press the function key (F1 to F4) or press the key to select the cycle program number to clear. or 4450Q MENU indicator switches off Press the RESET key.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-10. X and Y parallel movement of sewing pattern You can move the feed mechanism to the desired position to move an already-programmed sewing pattern in a parallel direction up, down or to the left or right. 1 or key to select the program number. 1. Press the 2. Depress the work clamp switch (1) to lower the work clamp, and then depress the start switch (2). • The work clamp will move to the sewing start position.
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 6-11. Clearing memory data (reinitialization) If the sewing machine stops operating normally, the cause may be that an incorrect memory setting may have been made by means of the memory switch, for instance. In such cases, normal operation may be restored if the memory data is reinitialized. Parameter No.
7. USING CF CARDS 7. USING CF CARDS 7-1. Notes on handling CF cards (sold separately) • Use a CF card with a memory capacity of 32, 64, 128, 256, 512 MB, 1GB or 2GB. (CF cards with a capacity of more than 2GB are not supported.) • Do not disassemble or modify the CF card. • Do not bend, drop or scratch CF cards or place heavy objects on top of them. • Avoid contact with liquids such as water, oil, solvents or drinks.
7. USING CF CARDS 7-3. Data read/write mode 1 With the power turned off, insert the CF card into the CF slot. NOTE: • Make sure the CF card is facing the correct way. • Always be sure to keep the cover closed except when inserting and removing the CF card. If this is not done, dust may get inside and cause problems with operation. • If no valid data can be found, the CF media indicator will not illuminate. 4453Q 2 3 Turn on the power switch. Switch to data read/write mode.
7. USING CF CARDS *1 *2 *3 *4 *5 The sewing data that can be used with this sewing machine is data that has been created for the BAS-300G series. Only valid when using an optional floppy disk drive. Sewing data for the BAS-300 series, BAS-300A series and BAS-300E/F series can be read. Refer to the instruction manual for the programmer for details of expansion option output. Can be selected when memory switch No. 755 = ON. Save the expansion option output data (BAS900.
7. USING CF CARDS 7-3-2. Writing all sewing data to the CF card at once 1 Select the [ w 2] data read/write mode. 4578Q 2 Press the R/W key. • [SEd-] will change to [ ALL]. * If you press the or key to select the program numbers that you would like to write and then continue to carry out the following procedure, you can write the selected sewing data in separate lots. 4577Q 3 Press the R/W key. • The buzzer will sound and the all sewing data will be copied from the internal memory onto the CF card.
8. SEWING 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 place of purchase or a qualified technician. CAUTION Turn off the power switch at the following times.
8. SEWING 8-2. Using the STOP switch If you press the STOP switch (1) while sewing or test feeding is in progress, the CAUTION indicator (2) will illuminate and the sewing machine will stop immediately. 2264B 1. Press the RESET key (3). • The thread will be trimmed, and then the CAUTION indicator (2) will switch off and the buzzer will stop sounding. 2. If you do not wish to continue sewing, press the RESET key (3) once more. • The program number will flash.
9. CLEANING 9. CLEANING CAUTION Turn off the power switch before carrying out cleaning. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result. 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. If the oil and grease get into your eyes or onto your skin, inflammation can result. Furthermore, do not drink or eat the lubricating oil or grease.
9. CLEANING 9-3. Draining the oil 1. Remove and empty the waste oil tank (1) whenever it is full. 2. After emptying the waste oil tank (1), screw it back into its original position. 2550Q 9-4. Checking the regulator 1. If water collects in the bottle of the regulator (1), close the air cock (2), and then turn the drain cock (3) in the direction of the arrow to drain the water. 2. After draining the water, tighten the drain cock (3). 3. Open the air cock (2). Open Close 4678M 9-5.
10. STANDARD ADJUSTMENTS 10. STANDARD ADJUSTMENTS CAUTION Maintenance and inspection of the sewing machine should only be carried out by a qualified technician. Hold the machine head with both hands when tilting it back or returning it to its original position. In addition, do not apply excessive force when tilting back the machine head. The sewing machine may become unbalanced and fall down, and serious injury or damage to the sewing machine may result.
10. STANDARD ADJUSTMENTS 10-3. Thread take-up spring Thread take-up spring height (mm) Thread take-up spring tension (N) 4−7 1.0 − 1.2 Lower Loosen the set screw (1) and turn the adjuster to adjust. Higher 4682M Turn the tension stud (2) with a screwdriver to adjust the tension. Stronger Weaker 4683M NOTE: If the thread tension spring is not adjusted correctly, the upper thread trailing length will be uneven after thread trimming.
10. STANDARD ADJUSTMENTS 10-5. Adjusting the needle bar lift amount 4667M 4685M 4686M 4687M Turn the pulley (1) by hand in the direction of the arrow to raise the needle bar from the lowest position until the lowest reference line on the needle bar (reference line B) is aligned with the lower edge of the needle bar bush (2), and then loosen the two set screws (4) and move the rotary hook to adjust so that the rotary hook tip (3) is aligned with the center of the needle. 10-6.
10. STANDARD ADJUSTMENTS 10-7. Adjusting the thread take-up amount Less thread More thread Thread take-up amount (stroke) 3202Q 4689M At the time of shipment from the factory, the thread take-up amount (stroke) of the thread take-up lever (1) is adjusted to the standard amount of 5 mm. Adjust this amount according to the sewing conditions to prevent the thread from pulling out at the sewing start.
10. STANDARD ADJUSTMENTS 10-9. Replacing the movable and fixed knives 4691M 1. Loosen the two bolts (1) and then remove the feed plate (2). 2. Open the hook cover, remove the two screws (3) and the two flat screws (4), and then remove the needle plate (5). 4692M 4693M 3. Remove the movable knife (6) and the fixed knife (7). 4. Install the new movable knife (6) and fixed knife (7) in the positions shown in the illustration. * Apply grease to the outside of the movable knife collar (8) at this time.
10. STANDARD ADJUSTMENTS 10-10. Adjusting the standby position of the movable knife 4695M 1. 2. 3. 4. Remove the top cover, the motor cover and the solenoid cover, and then tilt back the machine head. Turn the pulley (1) by hand in the direction of the arrow to move the needle bar to its lowest position. Loosen the bolt (2).
10. STANDARD ADJUSTMENTS 7. While pressing the key (10), turn on the power switch. * After the model name is displayed, keep pressing the key (10) until the buzzer sounds. The check code will appear in the PROGRAM No. display (11), and the abbreviation for the output name will appear in the menu display (12). 8. Press the key (13) or the key (10) to select check code 77. * Refer to the Service Manual for details on other check codes. 9. Press the key (14) to turn on the thread trimming air cylinder (15).
10. STANDARD ADJUSTMENTS 10-11. Adjusting the engagement of the movable knife and fixed knife <1> 4699M Knife Knife Knife Knife 4700M 3211Q A. Once the movable knife (1) and fixed knife (2) are overlapping as shown in Fig. <1>, tighten the screw (3). B. Turn the movable knife (1) while the screw (3) is still tightened. (Move in the direction of the arrow) C. Loosen the screw (3). D. Turn the movable knife (1) while the screw (3) is still loosened.
10. STANDARD ADJUSTMENTS 10-12. Installing the feed plate 1 All indicators switch off While pressing the THREAD/CLAMP key, turn on the power switch. * Keep pressing the THREAD/CLAMP key until the model name is displayed and the buzzer beeps once. • "CLMP" will appear in the menu display. MENU indicator switches off THREAD/CLAMP indicator illuminates 2 5005Q 4421Q Depress the work clamp switch (1) to lower the work clamp, and then depress the start switch (2).
10. STANDARD ADJUSTMENTS 10-13. Adjusting the thread wiper 4702M Open Close Approx. 2mm Approx. 3mm 4704M 4703M 4705M 1. Close the air cock (1). 2. Loosen the two screws (4) and shift the entire solenoid setting plate (5) up or down to adjust so that the thread wiper (3) is 15 mm in front of the needle center when the thread wiper cylinder (2) is pushed up to its full stroke. 3.
10. STANDARD ADJUSTMENTS 10-15. Changing the intermittent stroke (-484 SF specifications only) 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 position of stepping clamp link A. 5010Q 5011Q 1. Remove the face plate. 2. Remove the two screws (1) and the two shoulder screws (2), and then remove stepping clamp link A (3). 3.
10. STANDARD ADJUSTMENTS 4709M Index mark 4708M 5015Q 1. Loosen the screw (1), and then open the cover (2). 2. Loosen the nut (3), and then adjust the position of the stepping clamp connecting rod (4). • When the stepping clamp connecting rod (4) is raised, the intermittent stroke will increase. • When the stepping clamp connecting rod (4) is lowered, the intermittent stroke will decrease.
10. STANDARD ADJUSTMENTS 10-16. Adjusting the work clamp lift amount The maximum lift amount for the work clamp is 30 mm above the top of the needle plate. Max. 30mm 4711M 5018Q 1. Turn on the air, and depress the work clamp switch (1) to raise the work clamp (2). 2. Loosen the two bolts (4) of the left and right work clamp arm levers (3), and then move the work clamp arm levers (3) up or down to adjust. 10-17.
10. STANDARD ADJUSTMENTS 10-18. If processing the work clamps and the feed plate to a shape that matches the sewing pattern Process the work clamps and feed plate which match the sewing pattern, while referring to the processing diagram below. * Values in ( ) are the recommended sizes when sewing using the maximum area (130x60 mm) for -484 SF specifications. The left and right work clamps are symmetrical.
11. TABLE OF ERROR CODES 11. TABLE OF ERROR CODES DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the control box cover. Touching areas where high voltages are present will result in serious injury from electric shocks. If a malfunction should occur with the sewing machine, a buzzer will sound and an error code will appear in the display window. Follow the remedy procedure to eliminate the cause of the problem.
11. TABLE OF ERROR CODES Upper shaft motor-related errors Code Cause and remedy Needle up stop position error. E110 Turn the machine pulley until the point where the error display disappears. Upper shaft did not stop at the needle up stop position when the sewing machine stopped. E111 Turn the machine pulley until the point where the error display disappears. Needle drop signal could not be detected. E120 Turn off the power, and then check the synchronizer connection. Thread trimming was not completed.
11. TABLE OF ERROR CODES Work clamp-related errors Code Cause and remedy Work clamp home position cannot be detected. Problem with work clamp motor or poor work clamp home position sensor connection. (-484 SF specifications only) E300 Turn off the power, and then check that connector P3 on the PMD P.C. board and connector P5 on the main P.C. board are properly connected. Intermittent presser foot raised or lowered position cannot be detected.
11. TABLE OF ERROR CODES Data editing-related errors Code Cause and remedy The enlargement ratio setting caused the sewing data to extend outside the sewing area. E500 Set the enlargement ratio again. Sewing data that exceeds the sewing machine's sewing area was loaded. E501 Check the size of the sewing data. The enlargement ratio caused the data pitch to exceed the maximum pitch of 12.7 mm. E502 Set the enlargement ratio again. Invalid code in sewing data.
11. TABLE OF ERROR CODES P.C. board-related errors Code Cause and remedy Abnormal rise in power supply voltage. E700 Turn off the power and check the input voltage. Abnormal rise in sewing machine motor drive voltage. E701 Turn off the power, and then check the voltage. Abnormal drop in power supply voltage. E705 Turn off the power and check the input voltage. Abnormal current detected in sewing machine motor. E710 Turn off the power, and then check if there are any problems with the sewing machine.
12. TROUBLESHOOTING 12. TROUBLESHOOTING • Please check the following points before calling for repairs or service. • If the following remedies do not fix the problem, turn off the power switch and consult a qualified technician or the place of purchase. CAUTION Turn off the power switch and disconnect the power cord before carrying out troubleshooting. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result.
12. TROUBLESHOOTING Problem Cause Remedy Reference Lower thread winds to one side. Bobbin winder tension assembly height is incorrect. Adjust the height of the bobbin winder tension assembly. P. 22 Lower thread winding amount is incorrect. Bobbin presser position is incorrect. Adjust the position of the bobbin presser. P. 22 Thread unravelling at sewing start. Needle is thick. Select a needle that is suitable for the sewing conditions. P. 24 Upper thread trailing length is short.
12. TROUBLESHOOTING Problem Cause Upper thread breaks. Remedy Reference Thread is thick for the needle. Select a thread that matches the needle. P. 24 Needle is incorrectly installed. Install the needle correctly. P. 20 Thread is threaded incorrectly. Thread the thread correctly. P. 20 Damage or burring in parts such as the rotary hook, hook stopper, needle hole plate, needle or thread path. Repair the respective parts by buffing them. Alternatively, replace the parts.
12. TROUBLESHOOTING Problem Cause Needle is thin. Select a needle that is suitable for the sewing conditions. Hole diameter in needle hole plate is small. Replace the needle hole plate with one with a larger hole diameter. Feed plate is thin. Use a thicker feed plate. * Recommended thickness: 1.5 mm Hole diameter of intermittent presser foot is too small. (-484 SF specifications only) Sliding parts of outer rotary hook and inner hook have little or no sewing machine oil.
13. 7-SEGMENT DISPLAY 13.
MEMO BAS-300G-484, BAS-300G-484 SF 78
INSTRUCTION MANUAL * Please note that the contents of this manual may differ slightly from the actual product purchased as a result of product improvements. © 2012 Brother Industries, Ltd. All Rights Reserved. This is the original instructions. BAS-300G-484, BAS-300G-484 SF SB3326-001 E 2012.02.
