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Brother S-7200A Instruction Manual

Single needle direct drive straight lock stitcher with thread trimmer
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S-7200A
SINGLE NEEDLE DIRECT DRIVE
STRAIGHT LOCK STITCHER WITH THREAD TRIMMER

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  Summary of Contents for Brother S-7200A

  • Page 1 S-7200A SINGLE NEEDLE DIRECT DRIVE STRAIGHT LOCK STITCHER WITH THREAD TRIMMER...
  • Page 2: Safety Instructions

    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, and consequently there is always a danger of injury that can be caused by these parts.
  • Page 3 Contact your Brother dealer or a qualified shocks could occur. electrician for any electrical work that may need to be done.
  • Page 4 When threading the needle power switch. Then contact your nearest Brother When replacing the bobbin and needle dealer or a qualified technician. When not using the machine and when leaving...
  • Page 5: Warning Labels

    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. Be sure to connect the ground. If the ground connection is not...
  • Page 6: Table Of Contents

    5-6. Using the lower thread counter ...... 23 6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)....6-1. Names and functions ........24 6-2. Adjusting the needle up stop position .... 25 6-3. LOCK key............25 6-4. Resetting all settings to their defaults..... 25 S-7200A...
  • Page 7: Names Of Major Parts

    Presser foot Control box Knee lifter assembly Power switch Oil gauge window (-40[], 43[] specifications) (10) Reverse lever (11) Stitch length dial (12) Machine pulley (13) Operation panel (14) Cotton stand Safety devices (15) Thread take-up cover (16) Finger guard S-7200A...
  • Page 8: Machine Specifications

    Lubricated / Lubricated / Rotary hook RP for light materials for medium materials for heavy materials (lubrication-free rotary hook) Lubricating oil -40[] -43[] -45[] Rotary hook High-speed spindle – High-speed spindle Needle bar Special Brother grease Special Brother grease S-7200A...
  • Page 9: Installation

    The machine may operate if the treadle is depressed by mistake, which could result in injury. Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done. Use both hands to hold the machine head when tilting it back or returning it to its original position.
  • Page 10: Installation

    Control box mounting hole 2090M 3-2. Installation 1. Control box (1) Control box (2) Bolts [3 pcs] (3) Nuts [3 pcs] (4) Spring washers [3 pcs] (5) Washers [3 pcs] 2. Connecting rod (6) Connecting rod (7) Nut 2091M S-7200A...
  • Page 11: Power Switch

    (1) Head cushions (left) [2 pcs] (2) Head cushions (right) [2 pcs] (3) Oil pan 2093M 5. Rubber cushions (1) Rubber cushions [2 pcs] (2) Nails [4 pcs] 6. Knee lifter complying bar (3) Knee lifter complying bar 2094M S-7200A...
  • Page 12: Machine Head

    (1) Sticker 2097M 10. Cotton stand (1) Cotton stand NOTE: Securely tighten the nut (4) so that the two rubber cushions (2) and the washer (3) are securely clamped and so that the cotton stand (1) does not move. 2098M S-7200A...
  • Page 13 (5) is at the desired position within a distance of 16 mm of the needle plate when the knee liter plate (1) is fully pressed. 9. After adjustment is completed, securely tighten the nut (9). Within 16 mm 2102M S-7200A...
  • Page 14: Lubrication (-40[], 43[] Specifications)

    Use only the lubricating oil (Nisseki Mitsubishi Sewing Lube 10N; VG10) specified by Brother. 1. Tilt back the machine head. 2. Remove the rubber cap (1), and pour 150 ml of lubricating oil from the accessory oil bottle (2) into the oil tank (3).
  • Page 15: Connecting The Cords

    CAUTION Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done. Do not connect the power cord until all cords have been connected. The machine may operate if the treadle is depressed by mistake, which could result in injury.
  • Page 16 (2) using the repeat cable tie (1), otherwise vibration from the sewing machine may cause the cords become disconnected, which can cause problems with the operation of the control box. <Securing> Cords <Closing the cover> 2110M S-7200A...
  • Page 17: Other Cords

    AC power supply. NOTE: <Single-phase> <Three-phase> extension cords, otherwise machine operation problems may result. Green and yellow wire (ground wire) 2112M 4. Ground wire Ground symbol (1) Ground wire (2) Screw [With washer] (3) Screw Oil pan 2113M S-7200A...
  • Page 18: Test Operation (Operating The Treadle)

    (3) is returned to the neutral position (A). (when needle down stopping has been set.) 4. If the treadle (3) is pressed to position (D), thread trimming is carried out and the needle then rises above the needle plate and stops. 2117M S-7200A...
  • Page 19: Preparation Before Sewing

    There is an anti-spin spring (3) inside the bobbin case. The anti-spin spring (3) prevents the bobbin from racing at times such as during thread trimming. Use bobbins (2) made of light alloy as specified by BROTHER. 2120M For thick materials 0798M 2121M S-7200A...
  • Page 20: Winding The Lower Thread

    (2), and then pull it out from the thread guide (3). 4. Check that the bobbin turns clockwise when the thread is pulled. 5. Hold the latch (4) on the bobbin case and insert the bobbin case into the rotary hook. 2126M S-7200A...
  • Page 21: Threading The Upper Thread

    (3) is pushed to the halfway- down position. 3. Push the dial lock lever (1) down firmly to lock it. * Check that the stitch length dial (2) does not rotate. 2128M S-7200A...
  • Page 22: Using The Thread Wiper

    If this is done, the thread wiper (2) will operate after the thread is trimmed. 2129M 2130M 2209M 4-8. Using the knee lifter The presser foot (2) can be raised by pressing the knee lifter plate (1). 2131M 2132M S-7200A...
  • Page 23: Using The Operation Panel (Basic Operations)

    When this key is pressed so that the indicator illuminates, the number of backtack stitches (0−99) in the A, B, C and D stitch number displays is sewn continuously. After the sewing machine sews a full cycle of stitches set by A, B, C and D, the thread is trimmed automatically. 2142M S-7200A...
  • Page 24 These keys are used to set the initial value for the lower thread counter. (Refer to p.23.) 2155M (17) RESET key This key is used to return the lower thread counter to its initial value and to cancel warning conditions. (Refer to p.23.) 2156M S-7200A...
  • Page 25: Sewing Start And End Backtack Stitches

    • If the indicator of the thread trimming lock key is illuminated, the sewing machine will stop in the needle up position without thread trimming being carried out. 2160M S-7200A...
  • Page 26: Sewing Fixed Stitches

    • If changing the number of end backtack stitches in C and D, press the fixed stitch key to temporarily turn off the fixed stitch function before making the change. (The CD display will show the number of stitches and the setting can then be changed.) S-7200A...
  • Page 27: Sewing Name Labels

    • If changing the number of start and end backtack stitches in A, B, C and D, press the name label stitch key to turn off the name label function before making the change. (The ABCD display will show the number of stitches and the settings can then be changed.) S-7200A...
  • Page 28: Sewing Pleat Presser Stitches

    • If changing the number of end backtack stitches indicated in C and D, press the pleat presser sewing key to turn off the pleat presser sewing function before making the change. (The CD display will show the number of stitches and the setting can then be changed.) S-7200A...
  • Page 29: Using The Lower Thread Counter

    If you press the RESET key (2), the warning icon (1) will disappear and sewing will be possible when the treadle is depressed. If you press and hold the RESET key (2) for 2 seconds or more, the display will return to the initial value. S-7200A...
  • Page 30: Using The Operation Panel (Advanced Operations)

    • When the needle up icon (23) is illuminated, the needle bar stops in the up position. • When the needle down icon (24) is illuminated, the needle bar stops in the down position. 2207M 2208M 2174M S-7200A...
  • Page 31: Adjusting The Needle Up Stop Position

    If you press the ENTER key, the settings will then be reset. Once the settings have been reset, “iniT ALL” appears in the display and the operation panel settings are reset to their factory default settings. Once the above display appears, normal operation will then be possible. S-7200A...
  • Page 32: Sewing

    3. Depress the treadle to start sewing. 2114M 2115M 7-2. Backtacking When the actuator (1) or the reverse lever (2) is pressed 2175M during sewing, the feed direction will be reversed. When it is released, the feed direction will return to normal. 2176M S-7200A...
  • Page 33: Sewing Condensed Stitches

    (2). (Condensed stitches are sewn while the actuator (1) or reverse lever (2) is being pressed.) * To stop sewing condensed stitches, tighten the bolt (6) so that its head is not touching the solenoid lever (7). 2215M S-7200A...
  • Page 34: Thread Tension

    After the lower thread tension has been adjusted, adjust the upper thread tension so that a good, even stitch is obtained. 1. Lower the presser foot. 2. Adjust by turning the tension nut (2). Becomes weaker Becomes stronger 2178M S-7200A...
  • Page 35: Adjusting The Presser Foot Pressure

    If the tension of the pretension (1) is increased, the lengths of the threads trailing from the needle tips will be reduced; if the tension is reduced, the lengths will be increased. Adjust by turning the pretension (1). Shorter Longer 2181M S-7200A...
  • Page 36: Cleaning

    8. Remove the bobbin from the bobbin case (4) and clean the bobbin case (4) with a cloth. 9. Insert the bobbin into the bobbin case (4), and then place the bobbin case (4) back into the machine. 2184M S-7200A...
  • Page 37: Lubrication

    <Lubrication> 2187M Use only the lubricating oil (Nisseki Mitsubishi Sewing Lube 10N; VG10) specified by Brother. 1. Remove the rubber cap (3). 2. Add lubricating oil until the oil level is approximately 1 mm above the center reference line in the oil window (1).
  • Page 38 2189M 3. Checking 1. Replace the needle if it is bent or if the tip is broken. 2. Check that the upper threads have been threaded correctly. (Refer to page 15.) 3. Carry out a test sewing. 2190M S-7200A...
  • Page 39: Applying Grease (When "Greaseup" Appears)

    “Err100” will appear after a certain period of time and the sewing machine will be forcibly prevented from operating for safety reasons. If this happens, apply grease and carry out the reset procedure. <Applying grease> Use Brother-specified grease (SA2355-001). Using the tube 2216M S-7200A...
  • Page 40 5. Press and hold the ENTER key (6) for two seconds or more. The buzzer will make a long beep, and then the main display (1) will change to stitch number display mode. (This completes the reset procedure.) 2139M S-7200A...
  • Page 41: Troubleshooting

    Replace the needle with a needle that is one rank thicker. Is the presser foot too high? Adjust the height of the presser foot. Is the thread take-up spring too weak? Adjust the tension of the thread take-up spring. 0470M S-7200A...
  • Page 42 Adjust the presser foot pressure. Is the sewing speed too fast? Use the sewing speed control keys to gradually reduce the sewing speed. 0978M Material slippage Is the presser foot pressure too strong? Adjust the presser foot pressure. 0750M S-7200A...
  • Page 43 Attach the anti-spin spring. Is the bobbin turning smoothly? If the bobbin is not turning smoothly, replace the bobbin. Is a bobbin other that the light-alloy bobbins specified by Brother being used? Use only bobbins which are specified by Brother.
  • Page 44 Nothing appears on the Is the power supply connector 2196M operation panel display. disconnected from the control box? Insert connector securely. operation panel connector inside the control box disconnected? Insert connector securely. 2197M S-7200A...
  • Page 45: Error Code Displays

    Check the voltage. Voltage rating label 2199M Is the electrical equipment connector inside the control box disconnected? Insert the connector securely. 2200M Is the encoder connector inside the control box disconnected? Insert the connector securely. 2201M S-7200A...
  • Page 46 Apply grease and then carry out the reset procedure. Err 101 Is DIP switch No.4 inside the control box set to ON? (diP SW4) Set DIP switch No.4 to OFF. 2205M If an error code that is not listed above appears, contact the place of purchase. S-7200A...
  • Page 47: Instruction Manual

    INSTRUCTION MANUAL □ 877-S20 SA2016-001 2003.02.B(1)