BAS-342G 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.ᴾ 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 INSTRUCTIONSᴾ ᴾ [1] Safety indications and their meanings ᴾ 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.
[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 cover of the control box. Touching areas where high voltages are present can result in severe injury. CAUTION Environmental requirements Use the sewing machine in an area which is free from sources of strong electrical noise such as electrical line noise or static electric noise.
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. 1 2 3 Be careful to avoid getting hands caught in sliding parts. 4 Be sure to connect the ground.
Tension release solenoid cover Inside cover L Motor cover Middle cover Outside cover Rear cover Fixed cover X motor cover 3957M BAS-342G v
CONTENTS 1. NAMES OF MAJOR PARTS ................ 1 2. SPECIFICATIONS ................................ 2 3. TABLE PROCESSING DIAGRAM ....... 3 4. INSTALLATION .................................... 4 4-1. Removing the machine head fixing bolts [1] .... 4 4-2. Installing the control box [2].............................. 5 4-3. Installing the oil pan and support lever base.... 6 4-4. Installing the machine head.............................. 6 4-5. Tilting back and returning the machine head ... 7 4-6.
. SEWING................................................ 51 12. TABLE OF ERROR CODES............... 66 9-1. Sewing .............................................................. 51 9-2. Using the STOP switch..................................... 52 9-3. Using the thread wiper switch .......................... 52 13. TROUBLESHOOTING........................ 70 14. 7-SEGMENT DISPLAY....................... 73 10. CLEANING ......................................... 53 10-1. Cleaning the rotary hook ..........
1. NAMES OF MAJOR PARTS 1. NAMES OF MAJOR PARTS 3958M (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) Safety devices: (12) Finger guard (13) Eye guard (14) Thread take-up cover (15) Motor cover STOP switch CF slot Power switch Work clamp switch Start switch Control box Solenoid valve Operation panel Thread wiper switch Pulley Cotton stand CFTM is a trademark of SanDisk Corporation.
2. SPECIFICATIONS 2. SPECIFICATIONS Sewing machine Lock stitch, pattern tacking sewing machine (with large shuttle hook) Stitch formation Single needle lock stitch Max. sewing speed 2,700 rpm Sewing area (X x Y) Max. 300 x 200 mm Feed mechanism Intermittent feed, pulse motor drive 0.05 12.7 mm Stitch length No. of stitches Maximum no. of stitches No.
3. TABLE PROCESSING DIAGRAM 3. TABLE PROCESSING DIAGRAM • The thickness of the table should be at least 50 mm, and it should be strong enough to bear the weight and vibration of the sewing machine. • If using casters, use ones which can bear the total weight of sewing machine and table. • Check that the control box is at least 10 mm away from the leg. If the control box and the leg are too close together, it may result in incorrect sewing machine operation.
4. INSTALLATION 4. 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 160 kg. Use equipment such as a crane or hoist when installing the machine head and adjusting the height of the table. If you try to lift the machine head yourself, it may cause injuries such as back injury.
4. INSTALLATION 4-2. Installing the control box [2] CAUTION The control box is heavy, so installation should be carried out by two or more people. In addition, take steps to make sure that the control box does not fall down. If this is not done, injury to feet or damage to the control box may result. Before installing the control box (1), check that the model plate (a) on the control box (1) is “AX342G” to indicate that it is an RX-control box for BAS-342G sewing machines.
4. INSTALLATION 4-3. Installing the oil pan and support lever base (1) (2) (3) (4) (5) (6) (7) Oil pan Wood screws [4 pcs.] Oiler Support lever base Plain washers [2 pcs.] Spring washers [2 pcs.] Bolts [2 pcs.] Table 3964M 4-4. Installing the machine head 1. Place the machine head onto the table. NOTE: • Use a crane or hoist to install the sewing machine. • Be careful of the following when lowering the machine head onto the table.
4. INSTALLATION 2. After placing the machine head onto the table, remove the bolt (6) and the spacer (7). * The bolt (6) and the spacer (7) are necessary for securing the support lever (8) when the machine head is removed from the table, so keep them in a safe place. 3. Pass the support lever shaft (9) through the hole in the support lever base (10) and through the groove (f) in the support lever (8), and push it in until it is flush with the surface of the support lever base (10).
4. INSTALLATION 4-6. Installing the gas spring Crane or hoist Engaging the stopper Disengaging the stopper 3968M 1. Tilt back the machine head, and then secure the support lever (1) at stopper position (a). (Refer to "4-5. Tilting back and returning the machine head".) NOTE: Use equipment such as a crane or hoist to tilt back the machine head. 2. Tighten the two set screws (2) to secure the support lever shaft (3). 3. Install the gas spring (8).
4. INSTALLATION 4-7. Installing the operation panel [3] (1) (2) (3) (4) (5) (6) (7) Cushion A Operation panel base Plain washers (medium) [3 pcs.] Bolts [3 pcs.] Cushions B [3 pcs.] Plain washers (large) [3 pcs.] Nuts [6 pcs.] * Tighten until the thickness of cushion B (5) is about 1 mm. (8) Rubber seat (9) Operation panel stand (10) Operation panel * Pass the cords of the operation panel (10) through the operation panel stand (9) and under the table. (11) Bolts [3 pcs.
4. INSTALLATION 4-8. Installing the solenoid valve assembly Install underneath the work table. (Refer to "3. Table processing diagram" for the installation positions.) (1) Solenoid valve assembly (2) Washers [2 pcs.] (3) Wood screws [2 pcs.] NOTE: Make sure that the solenoid valve assembly does not touch the control box or the leg of the table. 3972M 4-9. Connecting the air tubes [4] Connect as shown in the illustration while checking the marks. Plugs 4 Branch unions Y 3973M 4-10.
4. INSTALLATION 4-11. Adjusting the air pressure [6] Lift up the handle (2) of the regulator (1) and then turn it to adjust the air pressure to 0.5 MPa. After adjustment is complete, push the handle (2) downward to lock it. 3975M 4-12. Adjusting the speed controller [7] You can adjust the lifting and lowering speeds for the work clamp using the knobs on the valves. • When the upper knob is tightened, the lifting speed becomes slower. When it is loosened, the lifting speed becomes faster.
4. INSTALLATION 4-13. Connecting the cords [8] 1. Remove the cover of the control box. 2. Loosen the two screws (1), and then open the cord presser plate (2) in the direction of the arrow. 3. Pass the bundle of cords from the machine head through the hole in the table, and then pass it through the hole in the control box together with the following cords. • Tow-pedal foot switch (3) • Operation panel (Do not pass the ground wires through the hole.) • Solenoid valve assembly 4.
4. 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. * Be sure to make the ground connection. (Refer to "4-14. Connecting the ground".) Connection location on power supply motor P.C. board Connector Machine head memory 7-pin P3 (HEAD-M) Upper shaft motor 3-pin P4 (UVW) (5) Synchronizer 14-pin P5 (SYNC) (5), (6) Connection location on PMD P.C.
4. INSTALLATION 4-14. Connecting the ground wire [9] CAUTION Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur.
4. INSTALLATION 4-15. Securing the cords and air tubes [10] Seen from underneath table Leg Secure the air tubes (a), the solenoid valve assembly cord (b) and the operation panel cord (c) together underneath the table with the three cord holders (1). Control box Table (1) Cord holders [3 pcs.] (2) Wood screws [3 pcs.] Operation panel Solenoid valve assembly 3981M 1. Gently tilt back the machine head. (Refer to "4-5. Tilting back and returning the machine head".) 2.
4. INSTALLATION 4-16. Installing the eye guard [11] CAUTION Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result. (1) Eye guard assembly (2) Plain washers [2 pcs.] (3) Screws [2 pcs.] 4934Q 4-17. Installing the cotton stand [12] (1) Cotton stand NOTE: Fit the washer (2), and then securely tighten the nut (3) so that the cotton stand does not move.
4. INSTALLATION 4-18. Lubrication [13] 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.
4. INSTALLATION 4-19. Connecting the power cord [14] CAUTION Be sure to connect the ground. If the ground connection is not secure, you run a high risk of receiving a serious electric shock, and problems with correct operation may also occur. 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.
5. PREPARATION BEFORE SEWING 5. PREPARATION BEFORE SEWING 5-1. 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). 3990M 5-2.
5. PREPARATION BEFORE SEWING 5-3. Threading the upper thread Thread the upper thread correctly as shown in the illustration below. * When using threading mode for threading, the tension discs (1) will open so that the thread can be threaded more easily. (Refer to following page.
5. 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. 2 Press the THREAD/CLAMP key. 4421Q 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.
5. PREPARATION BEFORE SEWING 5-4. 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. 3996M 3997M 3998M 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.
5. PREPARATION BEFORE SEWING 5-5. 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. 2534Q 30mm 4002M 1. 2. 3. 4. 5. 6. 2535Q Pull the shuttle race cover (1) downward to open it. While holding the bobbin so that the thread winds to the right, insert the bobbin into the bobbin case.
5. PREPARATION BEFORE SEWING 5-6. Thread tension Thread tension reference Upper thread #20 or similar Lower thread #20 or similar Upper thread tension (N) 1.4 1.8 Lower thread tension (N) 0.3 0.4 Pre-tension (N) 0.2 0.4 Needle DP17㧏19 5-6-1. Lower thread tension Adjust the thread tension to the weakest possible tension by turning the thread tension nut (1) until the bobbin case will not drop by its own weight while the thread end coming out of the bobbin case is held.
5. PREPARATION BEFORE SEWING 5-7. Home position detection 4004M Before starting home position detection, check that the needle bar is at the needle up stop position. Turn the pulley (1) until the ridge at the bottom of the thread take-up (2) is aligned with the { mark on the arm. Aligned 4005M 4421Q 1. Turn on the power switch. The POWER indicator (3) will illuminate, and the model name [342] will appear in the PROGRAM No. display (4) and [Air] will appear in the menu display (5).
5. PREPARATION BEFORE SEWING 5-8. Setting 2-step operation for the work clamp 4009M When these settings are made, the work clamp (1) can be lowered in two steps. 1st step 2nd step Intermediate position 1st step 2nd step 1. Set memory switch No. 002 to "1". (Refer to "7-2. Setting memory switches".) 2. With the work clamp (1) raised, loosen the wing screw (2). 3.
6. USING THE OPERATION PANEL (BASIC OPERATIONS) 6. USING THE OPERATION PANEL (BASIC OPERATIONS) 6-1. 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.
6. USING THE OPERATION PANEL (BASIC OPERATIONS) (10) X-SCALE indicator Illuminates when the SELECT key (15) is pressed to shown the X-scale setting. (11) Y-SCALE indicator Illuminates when the SELECT key (15) is pressed to shown the Y-scale setting. (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.
6. USING THE OPERATION PANEL (BASIC OPERATIONS) 6-2. Loading sewing data Refer to "8-1. 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.
6. USING THE OPERATION PANEL (BASIC OPERATIONS) 6-4. 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. or key (5) to set the scale (0 400). 2.
6. USING THE OPERATION PANEL (BASIC OPERATIONS) 6-6. Checking the sewing pattern Use test feed mode to check the needle movement with only the work clamp operating. Check that the needle hole in the needle plate 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.
6. USING THE OPERATION PANEL (BASIC OPERATIONS) 6-7. Setting the height of the intermittent presser foot You can use the operation panel to change the setting value for the intermittent presser foot height. 1 All indicators switch off 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. THREAD/CLAMP indicator illuminates MENU indicator switches off 2 4445Q 4015M Press the key.
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-1. List of advanced functions While holding down the TEST key, press the corresponding combination key. 4488Q 1 Memory switch setting mode Refer to "7-2. Setting memory switches". 4489Q 2 Lower thread counter setting mode Refer to "7-4. Using the lower thread counter". 4490Q 3 Production counter setting mode Refer to "7-5. Using the production counter".
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-2. 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.
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-3. 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 home position. Integrated-type work clamp drop operation 0 Work clamp dropping in one step 1 Work clamp dropping in two steps (*1) 2 Do not use this setting.
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-4. 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.
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-5. 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".
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-6. 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.
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-7. Using user programs Up to 50 different combinations of settings including program no., X-scale, Y-scale, sewing speed 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".
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 5 Next, set the sewing speed. Press the SELECT key. Press the recorded. 6 SPEED indicator flashes Next, set the intermittent presser foot height. or key to set the sewing speed to be 4474Q Press the SELECT key. or key to set the intermittent presser foot Press the 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.
7. 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 "7-9. Direct selection".) 2.
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-8. 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".
7. 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. 4439Q TEST indicator switches off, MENU indicator illuminates 1. Press the or key (1) to select the cycle program number that you would like to use.
7. 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.
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-10. 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.
7. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 7-11. 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.
8. USING CF CARDS 8. USING CF CARDS 8-1. 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.
8. USING CF CARDS 8-3. 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.
8. USING CF CARDS 8-3-1. Reading all sewing data from the CF card at once 1 Select the [r 1] data read/write mode. 4576Q 2 Press the R/W key. • [-SEd] will change to [ ALL]. or key to select the program * If you press the numbers that you would like to read and then continue to carry out the following procedure, you can read the selected sewing data in separate lots. 4577Q 3 Press the R/W key.
8. USING CF CARDS 8-3-2. 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.
9. SEWING 9. SEWING CAUTION Turn off the power switch at the following times. If the foot switch is depressed by mistake, the sewing machine might start operating and injury could result. • When threading the needle • 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 the machine. 9-1. Sewing 4978Q 1.
9. SEWING 9-2. 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. 4981Q 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.
10. CLEANING 10. 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.
10. CLEANING 10-3. Checking the regulator 㩷 1. If water collects in the bottle of the regulator (1), turn the drain cock (2) in the direction of the arrow to drain the water. 2. After draining the water, tighten the drain cock (2). 㩷 4026M 10-4. Cleaning the control box air inlet ports Use a vacuum cleaner to clean the filter in the air inlet ports (2) of the control box (1) at least once a month. 㩷 4027M 10-5. Cleaning the eye guard Wipe the eye guard clean with a soft cloth.
11. STANDARD ADJUSTMENTS 11. 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 subject the machine head to extra force while it is tilted back. If this is not observed, the machine head may become unbalanced and fall down, and serious injury or damage to the sewing machine may result.
11. STANDARD ADJUSTMENTS 11-2. Adjusting arm thread guide R More thread Less thread Index mark The standard position of arm thread guide R (1) is when the screw (2) is aligned with the index mark. Loosen the screw (2) and move arm thread guide R (1) to adjust. * When sewing heavy material, move arm thread guide R (1) to the left. (The thread take-up amount will become greater.) * When sewing light material, move arm thread guide R (1) to the right. (The thread take-up amount will become less.
11. STANDARD ADJUSTMENTS 11-5. Adjusting the driver needle guard Needle center Rotary hook tip 2555Q 0135Q 4034M Turn the machine pulley to align the tip of the rotary hook with the center of the needle, and then loosen the set screw (2) and turn the adjusting stud (3) to adjust so that the driver needle guard (1) is touching the needle. NOTE: If it crosses the needle more than necessary, it will place a load on the needle, or it may cause poor thread tension.
11. STANDARD ADJUSTMENTS 11-8. Adjusting the rotary hook lubrication amount More oil The optimum position is when the head of the set screw (1) is aligned with the edge of the bed. The rotary hook lubrication amount can be adjusted within three turns to the right from that position. Less oil • If the set screw (1) is turned clockwise, the lubrication amount becomes smaller.
11. STANDARD ADJUSTMENTS 11-9. Adjusting the position of the movable knife 4004M 5232Q 4039M Reverse position 5233Q 5255Q 1. Open the top cover and tilt back the machine head. 2. Turn the pulley (1) by hand to lower the needle bar to its lowest position, and push the thread trimmer solenoid (2) as far as it will go. 3.
11. STANDARD ADJUSTMENTS 4004M 4043M 4042M 8. Turn the pulley (1) by hand to move the needle bar to its lowest position. 9. Loosen the nut (11), tighten the set screw (12) until the collar (3) is touching the inside of the groove in the thread trimmer cam (4), and then turn it back in the counterclockwise direction by approximately 1/4 of a turn. 10. Tighten the nut (11), and then check that the collar (3) is not touching the inside of the groove in the thread trimmer cam (4).
11. STANDARD ADJUSTMENTS 11-10. Replacing the movable and fixed knives 4044M 1. Loosen the two bolts (1) and then remove the feed plate (2). 2. Open the shuttle race cover, remove the two screws (3) and the two flat screws (4), and then remove the needle plate (5). 3. Remove the movable knife (6) and the fixed knife (7). 5003Q 4045M 4. Install the new fixed knife (7) in the position shown in the illustration. 5.
11. STANDARD ADJUSTMENTS 11-10-1. Installing the feed plate index mark 4046M NOTE: Install the feed plate so that the surface with the index mark is facing upward. Place the rear edge of the feed plate (1) against the stepped part of base plate Y (2) (hatched shaded section (A)) and use a 2 mm diameter pin (such as a needle) to align the hole in the feed plate (1) with the hole in base plate Y (2); then tighten the two bolts (3). 11-11. Adjusting the thread wiper Approx. 2mm 5007Q 4047M Approx.
11. STANDARD ADJUSTMENTS 11-12. Presser foot installation position Install the presser foot (1) with the screw (2) so that the distance from the bottom of the presser foot to the top of the needle plate is 22 mm when the sewing machine is stopped and the presser foot (1) is raised. 5031Q 11-13.
11. STANDARD ADJUSTMENTS 5014Q Index mark 5015Q 4050M 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. Next, adjust the needle bar and presser foot timing. 3.
11. STANDARD ADJUSTMENTS 11-14. Adjusting the work clamp lift amount The maximum lift amount for the work clamp (2) is 30 mm above the top of the needle plate. Max. 30mm 5018Q 4052M 1. Turn on the air, and then turn on the power switch. 2. Depress the work clamp switch (1) to raise the work clamp (2). 3. Loosen the two bolts (4) of the work clamp lifter lever (3), and then move the work clamp lifter lever (3) up or down to adjust the lift amount. 11-15.
12. TABLE OF ERROR CODES 12. 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 cover of the control box. Touching areas where high voltages are present can result in severe injury. 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.
12. TABLE OF ERROR CODES Code E130 E131 E132 E133 E150 Cause and remedy Sewing machine motor stopped due to a problem, or synchronizer is faulty. Turn off the power, and then turn the machine pulley and check if the sewing machine has locked up. Check that connectors P4 and P5 on the power supply motor P.C. board are properly connected. Synchronizer is faulty. Turn off the power, and then check that connector P5 on the power supply motor P. C. board is properly connected.
12. TABLE OF ERROR CODES Communication and memory-related errors Cause and remedy Code Connection communication error with power supply motor P. C. board detected when power was turned on. E401 Turn off the power, and then check that connector P6 on the power supply motor P.C. board and connector P17 on the main P.C. board are properly connected. Communication error with programmer detected when power is turned on. E402 Turn off the power, and then check that connector P7 on the main P.C.
12. TABLE OF ERROR CODES Data editing-related errors Cause and remedy Code 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.
13. TROUBLESHOOTING㩷 13. 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. Problem Work clamp does not lift.
13. TROUBLESHOOTING Problem Upper thread breaks. Lower thread breaks. Skipped stitches occur. Cause Remedy Reference Upper thread tension is too strong. Adjust the upper thread tension. P. 24 Needle is incorrectly installed. Install the needle correctly. P. 19 Thread is too thick for the needle. Select a thread that matches the needle. P. 24 Thread take-up spring tension and height are incorrect. Adjust the tension and height of the thread take-up spring. P.
13. TROUBLESHOOTING㩷 Problem Upper thread trimmed. Cause is not Remedy Movable knife is not cutting cleanly. Replace with a new one. P. 61 Fixed knife is not cutting cleanly. Sharpen the fixed knife or replace it with a new one. P. 61 Adjust the position of the shuttle race thread guide. P. 57 Adjust the needle bar lift amount. P. 56 Movable knife is not picking up the upper thread because the last stitch is being skipped. Refer to "Skipped stitches occur". P.
14. 7-SEGMENT DISPLAY 14.
㪤㪜㪤㪦 BAS-342G 74
INSTRUCTION MANUAL http://www.brother.com/ 15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone: 81-52-824-2177 © 2007 Brother Industries, Ltd. All Rights Reserved. BAS-342G SA8777-001 E 2007.05.
