Single needle direct drive straight lock stitcher with thread trimmer (84 pages)
Summary of Contents for Brother S-7220D
Instruction Manual SINGLE NEEDLE DIRECT DRIVE NEEDLE FEED LOCK STITCHER WITH THREAD TRIMMER S-7220D-403 S-7220D-405 S-7220D-433 S-7220D Please read this manual before using the machine. Please keep this manual within easy reach for quick reference.
Safety Instructions Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions 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.
Notes on safety Notes during use 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 can result in severe injury.
Diarrhea or vomiting may result. Keep the oil and grease out of the reach of children. • Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done.
• Always be sure to turn off the power switch and then wait one minute before opening the motor cover. If you touch the surface of the motor, it may cause burns. • Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system.
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 Moving parts may cause injury. 2 Operate with safety devices installed. 3 Turn off the power before carrying out operations such as threading, changing the needle, bobbin, knives or hook, cleaning and adjusting. Be careful not to get your hands caught when returning the machine head to its original position after it has been tilted.
Table of Contents Installation ............................. 1 Points to note before installation ......................1 Table processing diagram......................2 Installing the sewing machine...................... 3 Lubrication ........................... 7 Connecting the cords........................9 Using the operation panel (Basic operations)................14 Name and function of each operation panel item ................14 About the home screens........................
Adding oil to the oil tank......................48 Adjusting the quantity of oil in the gear box ................49 Checking the condition of the needle and upper thread ............50 Adding grease (when the grease up warning screen is displayed) ........... 51 Replacing parts ...........................
• 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 weighs approximately 45 kg (99 lb). The installation should be carried out by two or more people.The installation should be carried out by two or more people.
Tilting back the machine head • Hold section (B) with your foot so that the table does not move, and then push the arm with both hands to tilt back the machine head. • Do not hold the operation panel. Returning the machine head to its original position 1.
Installing the sewing machine Install the control box and the connecting rod. (1) Control box (2) Bolt [4 pcs.] (3) Nut [8 pcs.] (4) Spring washer [4 pcs.] (5) Washer [4 pcs.] (6) Connecting rod (7) Nut Install the oil pan. (1) Head cushion(left) [2 pcs] (2) Head cushion(right) [2 pcs] (3) Oil pan...
Install the rubber cushions and the knee lifter complying bar. (1) Rubber cushion [2 pcs.] (2) Knee lifter complying bar Install the machine head. (1) Hinge [2 pcs.] (2) Machine head (3) Head rest CAUTION Tap the head rest securely into the table as far as it will go.
Remove the seal. (1) Sticker Install the cotton stand. (1) Cotton stand (2) Rubber cushion [2 pcs.] (3) Washer (4) Nut Securely tighten the nut so that the two rubber cushions and the washer are securely clamped and so that the cotton stand does not move.
Turn the adjusting screw (7) to adjust so that the presser foot (2) is at the desired position within a distance of 16mm from the needle plate when the knee lifter plate is fully pressed. After adjustment is completed, securely tighten the nut (6).
Use only the lubricating oil <JXTG Energy Sewing Lube 10N; VG10> specified by Brother.If this type of lubricating oil is difficult to obtain, the recommended oil to use is <Exxon Mobil Essotex SM10; VG10>.
Lubricating the oil cover Tilt back the machine head. Remove the rubber cap (1). Pour 120 ml of lubricating oil into the oil tank (2). NOTE Use the upper reference line (3) as a guide when pouring. Replace the rubber cap (1). Return the machine head to its original position.
• When securing the cords, do not bend the cords excessively or fasten them too hard with staples. Otherwise, fire or electric shocks may occur. • Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done.
Connecting the cords Connect the ground wire (8). Connect the cords. Connector P.C. board indication Repeat cable tie Machine motor connector 4-pin Outside control box Head detector unit connector 6- P3 HEAD Solenoid connector 14-pin CN8 SOL Encoder connector 10-pin CN16 ENC Operation panel connector 8-pin CN6 PANEL...
Closing the cord presser plate Loosen the cables outside the control box without stretching them too much inside the control box. Close the cord presser plate (1). NOTE If the cord presser plate (1) is not closed firmly, dust will get inside the control box and may cause problems. Connect cords that match the voltage specifications.
Connect the power cord. 1. Install the power switch (1) 2. Attach an appropriate plug to the power cord (3). 3. Insert the plug into a properly-grounded AC power supply. (1) Power switch (2) Screw[2 pcs] (3) Power cord (4) Ground wire(green/yellow cord) (5) Power supply connector 3-pin...
Ground wire Connect the ground wires. (1) Ground wire (2) Screw with washer[2 pcs.] (3) Ground symbol [2 places] (4) Oil pan...
Using the operation panel (Basic operations) Name and function of each About the home screens operation panel item • The home screen is displayed when the power is turned on. • Sewing operations are normally carried out while the home screen is displayed. •...
About the detailed home screen (8) Needle up/down key Press this key to switch the stop position after sewing (needle up/needle down). (9) Thread trimming lock key Press this key to switch thread trimming locking (disabled/enabled) when the treadle is depressed backward.
About the quick home screen (7) End backtack key Press this key to switch the end backtack sewing operation (off/on). If you keep pressing this key, the display switches to the end backtack setting screen. (8) RESET key Press this key to reset the currently-displayed counter value.
Types of icons The icons which appear in the display can be broadly classified into the following three types. Type A: Simple symbols Example Warning symbol USB media Current program No. Type B: Plain touch keys (symbol is always fixed) Example Return key (Returns to the previous + key (Increases a value)
Program setting method It is recommended that you register patterns that are sewn frequently as programs. After programs have been registered, you can retrieve the desired sewing patterns simply by selecting a program number, which eliminates the need to set the pattern each time. •...
Setting value No. of stitches B 1 to 19 stitches Main sewing parameters Setting value Main sewing pattern Normal sewing/fixed stitch sewing/reverse fixed stitch sewing/pleat presser stitch sewing/continuous backtack stitch sewing Setting value Sewing speed 220 to 5000 sti/min No. of stitches E 1 to 255 stitches No.
Setting value Automatic sewing Automatic sewing with thread trimming Slow start Slow start disabled at the sewing start Slow start enabled at the sewing start Slow start enabled at the sewing start Slow start enabled at the sewing start Slow start enabled at the sewing start...
Setting end backtacking Setting value Setting Default unit value No. of 0 to 19 stitches 1 stitch 1 stitch stitches Press [ ] > [End BT setting]. No. of 1 to 19 stitches 1 stitch 1 stitch stitches No. of 0 to 19 stitches 1 stitch 1 stitch...
Using program individual functions and program common functions • In addition to start backtack sewing, main sewing and end backtack sewing, the following 6 types of functions are also included in the parameters which are necessary for sewing. Needle up/down, thread trimming lock, thread wiping , correction sewing, AUTO, slow start. •...
Thread trimming lock This sets the thread trimming operation when the treadle is depressed backward. Setting details Thread trimming operation is carried out when the treadle is depressed backward. Thread trimming operation by depressing the treadle backward is locked (disabled). Thread wiper Thread wiping operation can be set.
Setting details Sewing is carried out automatically for the number of stitches which have been set (start and end backtacking, fixed stitch sewing, thread trimming) simply by depressing the treadle once. After sewing is complete, thread trimming is carried out automatically.
Slow start The slow start pattern at the sewing start after thread trimming can be set. Setting details Sewing is carried out without slow start operation. Sewing is carried out according to slow start pattern 1. 1st stitch: 400 sti/min 2nd stitch: 400 sti/min 3rd stitch: 400 sti/min 4th stitch: 4000 sti/min...
Using the production counter Using the lower thread counter The production counter can be used to let you know The lower thread counter can be used to let you know how many items have been sewn. approximately how much lower thread is remaining. The production counter increases by 1 each time •...
Lower thread counter operation Press The lower thread counter value will remain When sewing is carried out, the value shown in the unchanged. lower thread counter display is reduced by 1 for every 10 stitches sewn. However, the display is only updated The display will return to the screen which was being when the treadle is returned to the neutral position.
Press [ ] > [Home screen mode • If you press , the setting value will decrease down to -10 and the needle up stop setting]. position will become higher. • The default setting value is "0". If the value that is displayed is different from the value that is currently set, the value in the display will flash.
Using the operation panel (Advanced operations) Adding and deleting steps When deleting a step You can put together programs, such as the one shown Press in the illustration for pocket sewing or name label sewing, by registering multiple steps in the main The step at the cursor position will be deleted.
Editing steps Setting main sewing parameters when several steps exist The number of stitches can be changed separately for each step. Setting value Setting Default unit value The setting is made from the detail home screen. Main － sewing pattern Press to select the step number to...
Setting the sewing start step Copying programs If sewing is interrupted by a problem such as a thread To create a program with parameters that are almost breakage occurring and you need to resume sewing exactly the same as those of another program, you can from the point where sewing was interrupted, you can copy the original program and change just the parts start sewing from the middle of a step.
Initializing the currently- Setting the working pace selected program The target counter can be used to let you know the state of work progress. If you would like to recreate the program which is currently selected from the beginning, you can The target counter increases by 1 each time the time reinitialize the program instead of deleting each step set as the working pace has elapsed.
Setting memory switches Press (standard) The value will be confirmed and the mode will return to production counter editing mode. The settings for the memory switches are valid for all programs. Press [ ] > [Memory switch setting]. Press to select the memory switch number (1).
List of memory switches Presser foot lifter and treadle settings (001 to 099) Setting Default value Setting Setting details range unit ON/OFF When treadle is returned to neutral after thread trimming, － presser foot is raised up ON: Presser foot is raised OFF: Presser foot is not raised Rises when memory switch No.
Setting Default value Setting Setting details range unit 0 to 500 80 (ms) 10 (ms) Delay time from standing operation pedal turning on until (ms) motor starts operating ON/OFF When AUTO function is set ON, pauses when presser － foot pedal is ON. ON: Sewing is interrupted when presser foot lifter pedal turns on (pause operation) OFF: No operation...
Panel operation settings (300 to 399) Setting Default value Setting Setting details range unit 1 to 3 Movement when bobbin counter warning. 1: Sewing can continue by pressing the return key 2: Sewing is only possible when lower thread counter is reset after replacing the bobbin.
Setting Default value Setting Setting details range unit OFF, ON Panel auto lock when power is turned on － OFF: Disabled ON : Enabled Sewing program settings (400 to 499) Setting Default value Setting Setting details range unit ON/OFF Stopping and sewing speed during start backtacking －...
Setting Default value Setting Setting details range unit 2: C-D 3: C-D-C 4: C-D-C-D 5: C-D-C-D-C 6: C-D-C-D-C-D 0 to 1 Operation mode for manual production counter increment function using hand switch 0 : Counter can be incremented at any time 1 : Counter can only be incremented after sewing stops and thread has been trimmed Standard device settings (500 to 599)
Hand switch The following functions can be assigned to the hand switch. (The operation of the hand switches will vary depending on the status of the correction sewing icon.) Settings when using as correction sewing switch Settings (Initial Operation when hand switch is pressed setting is “1”.) OFF: <Disabled>...
Settings (Initial Operation when hand switch is pressed setting is “4”.) 7: <Move to next When cycle sewing is selected, sewing moves to the next program each time the switch program> is pressed. Refer to the Service Manual for details on cycle sewing. * These settings are enabled when the correction sewing icon is turned off (...
Setting hand switch functions Press [ ] > [Hand switch setting]. Select the desired menu. Example: Setting the hand switch so that it functions as a correction sewing switch 1. Press [Correction sewing function]. Press to select the desired setting item. Press Press this to return to the Home screen.
Creating folders for USB media Data type Filename Folder name Use the keys to change the read/write Program ISMUPG.SEW ¥BROTHER¥ISM item. ¥ISMDE**¥ (** is the value for memory switch Press No. 750.) The selected read/write item will be run. The (Refer to the read/write in progress screen will be displayed.
Data type Filename Folder name Error log E*******.LDT \BROTHER\ISM \ISMLDT\ M*******.LDT Production P*******.LDT Same as above data...
Initialization If the sewing machine stops operating normally, the cause may be that an incorrect setting may have been made for the memory data by means of memory switches, for instance. In such cases, it may be possible to restore normal operation by initializing the stored data.
Sewing Points to note before Use the lifting lever to lower the presser foot (1). sewing Loosen the nut (4). CAUTION • Attach all safety devices before using the sewing machine. If the machine is used without these devices attached, injury may result.
Sewing condensed stitches Loosen the nut (5) and then turn the bolt (6) until its head is touching the solenoid lever (7). • If you press the hand switch (1) or the reverse lever (2) while sewing is in progress, you can sew stitches (forward direction) with small stitch lengths.
Adding oil to the oil tank cleaning Use only the lubricating oil <JXTG Energy Sewing Lube 10N; VG10> specified by Brother. CAUTION If this type of lubricating oil is difficult to obtain, the recommended oil to use is <Exxon Mobil Essotex •...
The rubber cap (3) has a hole in it for adjusting the air pressure. When replacing the rubber cap (3) use only the replacement part specified by Brother. The oil level should normally be approximately 2mm above the center reference line in the oil window (1).
(1) can be seen, and then apply grease at the NOTE position shown in the illustration. (S-7220D-433) Use Brother-specified “Grease unit (SB6659-101)”. 5. Tighten the screw to push in the grease. 6. Turn the machine pulley by hand to move the Using the tube needle bar up and down several times in order to disperse the grease.
7. Use a cloth to wipe away any excess grease Press from around the screws. Press The display will switch to the home screen. Depress the treadle to run the sewing machine for 1 second or more. Turn the power switch to “OFF”. To learn more, see Related Information.
(7). • Replacement of parts should only be carried out by a qualified technician. • Use only the proper replacement parts as specified by Brother. Replacing the fixed knife and movable knife Replacing the fixed knife Tilt back the machine head.
Remove the two flat screws (9), and then remove the movable knife (10). Install the new movable knife by following the removal procedure in reverse.
• 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. • If...
Remove the safety switch (1). Remove the presser foot (3), needle plate (4) and feed dog (5). Change the position of the washer (2) to the machine bed side as shown in figure [B], and then install the safety switch (1). Turn the machine pulley to set the needle bar (1) to its lowest position.
Adjusting the needle and rotary Loosen two of the three set screws (9) which are securing the rotary hook (8). hook timing When the machine pulley is turned forward to raise the needle bar (1) 1.8 mm (2.2 mm for -405 specifications) from its lowest position, the rotary hook tip (3) should be aligned with the center of the needle (4) as shown in the illustration when the distance from needle plate...
Adjusting the height of the feed The standard height of the feed dog (1) when it is raised as far as possible above the surface of the needle plate is as given below. Specifications Standard height -43 1.0mm -405 1.2mm Tighten the set screw (2).
Adjusting the feed dog angle • If you would like to tilt the feed dog (1) further, turn the feed lifting rocker shaft (5) while carrying out the above adjustment. (Figure [D]) The standard angle is for the feed dog (1) to be parallel To learn more, see Related Information.
Adjusting the needle and feed Tilt back the machine head. timing Loosen the two set screws (5), and then turn the feed lifting eccentric cam (3) slightly to adjust the The standard timing is for the tip of the needle to be in timing.
NOTE Adjusting the height of the After adjusting, check that the needle moves down into presser foot the center of the groove in the presser foot. The standard height of the presser foot (1) is 6 mm when the presser foot (1) is raised by means of the lifting lever (2).
Adjusting the rotary hook lubrication amount Use the following procedure to check the amount of oil being supplied to the rotary hook when replacing the rotary hook or when changing the sewing speed. CAUTION • Be careful not to touch your fingers or Check the amount of oil which has spattered onto the lubrication amount check sheet the sheet.
Check the lubrication amount again after the sewing machine has been used for approximately two hours.
Troubleshooting • Please check the following points before calling for repairs or service. • Simplified details can be checked on the panel. • If the following remedies do not fix the problem, turn off the power switch and consult a qualified technician or the place of purchase.
Problem Possible cause Page Skipped stitches occur • Is the presser foot too high? See Adjusting the height of while sewing the presser foot on Adjust the height of the presser foot. page 61. • Is the thread take-up spring too weak? Adjust the tension of the thread take-up spring.
Attach the anti-spin spring. • Is the bobbin turning smoothly? If the bobbin is not turning smoothly, replace the bobbin. • Is a bobbin other than the light-alloy bobbin specified by Brother being used? Use only bobbins which are specified by Brother.
Problem Possible cause Page Upper and lower threads • Is the needle tip bent? Is the needle tip blunt? are breaking. If the needle tip is bent or blunt, replace the needle. • Is the needle properly installed? If it is incorrect, install the needle correctly. •...
Problem Possible cause Page NOTE Broken needle • It is extremely dangerous to leave any pieces of broken needle sticking in the material. If the needle breaks, search for all pieces until the whole of the needle is found again. •...
Problem Possible cause Page Nothing appears on the • Is the power supply connector disconnected from the See Connecting the cords operation panel display. control box? on page 9. Insert the connector securely. • Is the 8-pin operation panel connector inside the See Connecting the cords control box disconnected? on page 9.
List of error codes List of error codes If an error code appears on the touch panel display Connector layout diagram...
Main P.C. board Switch-related errors Code Cause Remedy E050 Machine head is detected as being tilted back • Turn off the power, and then return the when sewing starts. machine head to its original position. • Turn off the power and check the connection of connector CN8.
Code Cause Remedy E090 Connection of treadle was not detected when Turn off the power and check the connection of power was turned on. connector CN11. E095 Treadle or standing operation pedal was being Return the treadle or the standing operation pedal depressed when power was turned on.
Code Cause Remedy E410 Communication error with panel occurred when Turn off the power and check the connection of power was turned on. connector CN6. E422 An error occurred while reading from USB • Press the RESET key. media. • Check the files in the USB media. E424 Not enough free space in the USB media.
Code Cause Remedy E791 Abnormal solenoid mechanism current detected Turn off the power and check the connection of when solenoid was activated. connector CN8. Version updating errors Code Cause Remedy E880 Version update request could not be received Turn off the power and check the connection of when power was turned on.