Home

S-7200B - vnz rutha

1. Before setting DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury Set DIP switch 3 to OFF This will cancel the lock so that the functions can be set La Control box OFF 3143M 2 A While pressing the end backtack key 1 press the power ale Switch 2 to turn on the power 0706B 35 S 7200B 6 ADJUSTMENTS Needle up stop position 1 aps 3 Q H Example 8 icp 10 _ M 15 1 Press the start backtack key 3 so that is displayed in the top row of the stitch number display 2 Press the end backtack key 1 to set the value Becomes higher Becomes lower Becomes higher Becomes lower 0704B 3657M 2 Set DIP switch 3 to ON The settings will be locked Needle down stop position 1 A 1 Press the start backtack key 3 so that is displayed af 8 3 in the top row of the stitch number display 2 Press the end backtack key 1 to set the value OR Example 3 O erm I LI 7 cn 1 10 _ _ _ ___ 0 10 Becomes lower Becomes higher 0705B Set DIP switch 3 to ON The settings will be locked S 7200B 3
2. lt At pedal gt NOTE Connector types Manufacturer Connector No Connector terminal MOLEX 1292 P 1380 TL lt A gt Two step pedal lt B gt Variable speed pedal peeds peeds JOO 19SS91d I 2 o o 2 peasy L peeds 300 18ss81d peasy 63 S 7200B 13 TROUBLESHOOTING 13 TROUBLESHOOTING Please check the following points before calling for repairs or service e If the following remedies do not fix the problem turn off the power switch and consult a qualified technician or the place of purchase DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury CAUTION A Turn off the power switch and disconnect the power cord before carrying out troubleshooting The machine may operate if the treadle is depressed by mistake which could result in injury 13 1 Sewing Problem Possible cause Page 1 Upper thread is not tight s the upper thread tension too weak or is the lower thread tension too strong 1 Ui Ws Wh UW Wat Adjust the upper thread tension or lower thread tension Instruction Le manual sthe needle and feed timing correct Advance the needle ti
3. Lock Becomes higher Becomes lower 1 2 While pressing the needle up down key 1 turn on the power switch n 0 xx will appear in green in the main display 2 xx is the setting value for the needle up stop position and 0 is the default setting Press V key 3 to change the setting value for the needle up stop position e f you press the A key the setting value will increase up to 20 and the needle up stop position will become lower e f you press the V key the setting value will decrease down to 10 and the needle up stop position will become higher Press the ENTER key 4 for two seconds or more A long buzzer will sound and the main display 2 will change to stitch number display mode This completes the needle up stop position setting A setting value of 10 corresponds to an angle of rotation of approximately 10 for the upper shaft If DIP switch 3 is not set to OFF this adjustment cannot be carried out 2138M 2139M S 7200B 34 6 ADJUSTMENTS 6 14 Setting the needle up stop position and needle down stop position If using the control box panel Meaning of displays during setting e The stop position is set numerically and A to F Display A b d E represent the numbers 10 to 15 respectively Value 40 11 12 13 14 15 e setting value of 8 corresponds to an angle of rotation of approximately 8 for the upper shaft
4. 29 6 8 Adjusting the needle bar 30 6 9 Adjusting the needle and feed mechanism timing 30 6 10 Adjusting the needle and rotary hook timing 31 6 11 Adjusting the thread trimming 32 6 12 Adjusting the thread take up amount specifications 33 6 13 Adjusting the needle up stop position When using the operation panel 34 6 14 Setting the needle up stop position and needle down stop position If using the control box panel 35 6 15 Adjusting the treadle sss 37 6 16 Adjusting the presser foot floating amount minute lifting amount 37 S 7200B 7 REPLACING PARTS 1 Fixed khife res ane ren 7 2 Movable knife ccccccccccssccsscessessscsesseseseeseeseeeaees 7 3 Motor and timing belt 7 4 Rotary hook RP 7 5 Feed bar shaft Lifting feed shaft 8 APPLYING GREASE 130 050 specifications 8 1 When using the operation panel 8 2 When using the control box panel 9 CONTROL SYSTEM 10 CONTROL BOX AND MOTOR 10 1 Removing and installing the control box 10 2 Control box and motor rating plate 10 3 Control circuit board 10 4 Checking the motor and power supply 10 5 Checking the solenoids 11 TREADLE UNIT ASSEMBLY 11 1 Types 11 2 Standard setting values 11 3 Settin
5. NO B3DAA1 106 Serial No 2325M Serial No Asia Middle East USA Mexico Canada Oceania C TICK Turkey North Africa China Europe Greece CE 100V 110V 200V 220 240V 380 415V 1 forward 1 backward step type 2 forward 2 backward step type External S 7200A Destination Power supply voltage Treadle unit Operation panel Sewing machine gt RID ro NI S 7200B 50 10 CONTROL BOX AND MOTOR Motor No A03D1111 lt Serial No 51 S 7200B 10 CONTROL BOX AND MOTOR 10 3 Control circuit board DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury Name and function of each part 060000000000 CN6 00000000 CN7 00000000000 CN8 0000000000 2 EEEEXEE 8 BB CN5 CN4 O 00000 200000 0000000 0000000 O CN1 CN10 CN15 na CN12 ooo 0657B CN18 Head detector unit connector CN12
6. 1 5V DC 5V 2 IN Variable signal input For stitch counting 3 SPSP Speed command input Not used by the S 7200A 4 STOP Operation prevention input L level Operation prevented 5 ND Needle down signal output L level Needle down stop position 6 NU Needle up signal output L level Needle up stop position 7 ENG Machine shaft sync signal 45 pulses stitch 8 STBY Operation signal output H level Operation in progress 9 SOV OV GND 10 ENC A A phase signal output Encoder A phase 180 pulses stitch 11 ENC B B phase signal output Encoder B phase 180 pulses stitch Open collector output Connector CN9 Signal name Remarks 1 5V DC 5V Stitch counter warning LED 2 UNTH LED Stitch counter LED signal output 3 UNTH SW Stitch counter switch input signal 1 OV GND Stitch counter actuator 5 IN1 Variable input signal 1 6 IN2 Variable input signal 2 Connector CN11 Signal name Remarks 1 5V DC 5V 2 LED1 Option signal output 1 3 LED2 Option signal output 2 4 LEFT UP SW Option signal input 1 Sewing speed actuator high speed 5 RIGHT UP SW Option signal input 2 Sewing speed actuator medium speed 6 RESET SW Option signal input 3 Sewing speed actuator low speed 7 SOV OV GND 53 S 7200B 10 CONTROL BOX AND MOTOR 10 4 Checking the motor and power supply CAUTION Turn of
7. Solenoid type presser lifter connector CN13 Sewing machine connector CN4 Synchronizer connector CNS Operation panel connector Connect to sewing machine connectors CN7 Relay connector CN8 Coupler connector Connect to power supply circuit board connectors CN1 Control power supply connector Connect to transformer connectors Connectors CN2 Treadle connector Connect to treadle unit connector CN3 Standing operation connector Connect to plug sold separately for standing operation CN15 Puller connector Connect to solenoid for puller or other device CN11 Option connector 1 Connect to sewing speed actuator CN6 Option connector 2 For input output signals used by external devices CN9 Option connector 3 Connect to stitch counter actuator CN10 Cooling fan power supply connector Only used for three phase high voltage specifications CN16 Thermistor connector Connect to shorted connector when not using three phase high voltage specifications S 7200B 52 10 CONTROL BOX AND MOTOR Fuses Solenoid power supply fuse SA For preventing overcurrent F15A Illumination lamp power supply fuse 5A DIP switch DSW DSW For function selection LeDidcaos HE Sar LED poer supa ered board Connector CN6 Signal name Remarks
8. 0469M 14 Oil gauge 1 is not visible Is the oil tank empty in oil gauge window O 030 specifications Fill the oil tank with oil Instruction manual 1 2195M 15 Machine does not operate Is the power supply connector when power is turned on disconnected from the control and treadle is pressed box Insert the connector securely Instruction manual 16 Machine does not operate Is the sewing speed setting or backtack speed setting incorrect at high speed Use the sewing speed control keys to set the high speed Instruction manual 17 Machine stops during Is the fixed stitch key turned on sewing Press the fixed stitch key so that the indicator turns off Instruction manual e Is the power supply voltage too low Check the power supply If the power cord is too long or too many appliances are being run from a single outlet this may cause voltage drops which will in turn cause the reset function to activate and stop the machine even if the power supply itself is normal 67 S 7200B 13 TROUBLESHOOTING Problem Possible cause Page 18 Nothing appears on the Is the power supply connector operation panel display disconnected from the control box Insert the connector securely Instruction manual IS the operation panel connector inside the control box disconnected Insert the connector securely Instruction manual 19 GrEASEUP or GU This di
9. End backtack sewing speed 0 Separate setting from start backtack sewing speed is possible 1 Setting for start backtack sewing is used 11 NOTE 1 Option actuator operation setting Half stitch correction sewing Single stitch correction sewing Single reverse stitch correction sewing reverse feed Thread trimming Single end backtack cycle cancel Solenoid type presser foot lifter is raised Alternating Solenoid type presser foot lifter is raised Momentary O O1 N 12 Presser foot status when treadle is returned to neutral after thread trimming 0 Presser foot drops See NOTE 2 1 Presser foot does not drop 13 Presser foot status after treadle stops at neutral 0 Presser foot does not lift 1 Presser foot lifts 14 Actuator function 0 Reverse stitch switch during operation correction sewing switch when stopped 1 Thread trimming switch 15 0 1 Slow stop control when treadle is returned to neutral 0 Slow stop control without step operation 1 Above control is not used NOTE 1 If function No 69 is set to 3 operation is enabled NOTE 2 Presser foot will not drop if DIP switch 1 is set to OFF Enabled if the control box model is MD 741A 751A Alternating The presser foot is raised or lowered each time the optional actuator is pressed Momentary The presser foot is raised only while the optional actuator is being pressed S 72
10. 57 S 7200B 11 TREADLE UNIT ASSEMBLY 11 3 Setting method for standard depression strokes CAUTION Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury When the specifications of the treadle unit are changed or if the treadle unit or control circuit board are replaced it will be necessary to make new settings according to the procedure described below Use the following procedure to set the operating positions for the depression stroke For sewing machines with operation panel make the settings using the operation panel Refer to A For the operation panel For sewing machines without operation panel make the settings using the control box panel Refer to B For the control box panel L2 8588 BB 0 62 nt D A For the operation panel 272 200968 1 Signal setting entry 1 Turn off the power switch 1 2 Set DIP switch No 4 to ON 3192M 3 While pressing the thread trimming key 2 turn on the power switch 1 PdFF will appear in the main display 3 x xxx indicates the depression voltage 2 Memorizing the maximum forward position 9 e With the treadle depressed forward to the maximum forwa
11. 7200B 64 13 TROUBLESHOOTING Problem Possible cause Page Skipped stitches at sewing Is the thread take up spring tension too strong start Reduce the tension of the thread take up spring 26 Thread unravelling at Is the thread take up spring operating range too large sewing start Lower the position of the thread take up spring 26 Are the trailing lengths of the upper threads too short after thread trimming SC Adjust the pretension Instruction 5s Are the threads not being trimmed cleanly manual Sharpen the fixed knives or replace the fixed and movable knives if necessary Is the needle too wide Try using a needle with a count that is one lower than the current needle Is the length of thread trailing out from the bobbin case after thread trimming too short If the bobbin is spinning loosely replace the anti spin spring in the bobbin case Instruction Is the sewing speed too fast at the sewing start manual Use the slow start feature Instruction Is the needle up stop position too high manual Adjust the needle up stop position 34 35 0749M Uneven seam Is the presser foot pressure too weak Adjust the presser foot pressure Instruction a Is the feed dog too low manual UST Adjust the feed dog height 28 ix SS Is the bobbin scratched If the bobbin is damaged smooth it with an oiled grindstone or replace it 0473M Large degree of puckering Is the upper thread tension too strong excess tension Make
12. 90 Thread trimming speed TRIM rpm rpm He 220 150 300 91 Low speed INCH rpm rpm ie 92 1400 500 2 500 Stop improvement speed POS rpm rpm Do not change this setting 93 708 INCH 1 000 Slow speed SLOW rpm rpm 94 2 000 INSEE 9 000 Start backtacking limit speed SBL See NOTE 27 rpm rpm 96 1 800 INCH 3 000 End backtacking speed EBT rpm rpm 98 HIL INCH HIL Automatic speed AUTO rpm rpm 99 NOTE 28 Are du Maximum sewing speed limit speed HIL See NOTE 29 Lock level for operation panel lock 0 FUNC key 101 1 0 3 1 FUNC key MAX key 2 FUNC key MAX key Correction key 3 FUNC key MAX key Correction key Stitch number key 102 0 Do not change this setting 0 99 103 0 needles needles No of pocket sewing stitches J 0 99 104 0 needles needles No of pocket sewing stitches K 0 99 c 105 0 needles needles No of pocket sewing stitches L 0 99 106 0 needles needles No of pocket sewing stitches M 107 0 Do not change this setting NOTE 27 This is the upper limit for the start backtacking speed setting Refer to page 3 for details on start backtacking speed settings NOTE 28 This setting is read from the head detector unit NOTE 29 This is the upper limit for the maximum sewing speed setting Refer to page 3 for details on maximum sewing 17 speed settings S 7200B 3 FUNCTION SETTINGS OPERATION P
13. Adjusting the thread take up amount 3 specifications CAUTION A Turn off the power switch before carrying out this operation The machine may operate if the treadle is depressed by mistake which could result in injury NOTE Do not use this function with models that are not 3 specifications If the thread take up amount is small and the thread breaks easily when sewing heavy materials you can increase the Thread take up amount thread take up amount 1 Remove the face plate 2 Remove the two rubber caps 1 3 Use a hexagonal wrench 3 to loosen the set screws 2 and 3 by approximately two turns 4 Adjust the thread take up amount Increases To increase the thread take up amount Standard Turn the thread take up support shaft 4 clockwise so that the groove 5 is facing straight upward To return the thread take up amount to the standard setting Turn the thread take up support shaft 4 counterclockwise so that the groove 5 is facing straight downward 5 With the thread take up support shaft 4 pushed in as far as it will go first tighten the set screw 2 until it touches the screw stop on the thread take up support shaft 4 After this tighten the set screw 3 Install the two rubber caps 1 Install the face plate CON 33 S 7200B 6 ADJUSTMENTS 6 13 Adjusting the needle up stop position When using the operation panel Ap B CgD Aga
14. Remove any thread scraps that may be blocking the motor Thread trimming Check that there are no problems with the thread trimming mechanism solenoid timeout Err 18 This is displayed if data could not be correctly read from or written to the memory element on the control P C board EEROM error Replace the control box 49 Err 19 This is displayed when the control box becomes abnormally hot Three phase high voltage specifications only Control box Check that there are no problems with the cooling fan overheating If there is a problem replace the cooling fan Err 20 The settings in Setting method for standard depression stroke may be incorrect Redo the settings in Setting method for standard depression stroke 58 60 71 S 7200B 13 TROUBLESHOOTING Error code Possible cause Page Err 21 s connector CN16 inside the control box disconnected Thermistor error Insert the connector securely 52 f i HC Err 100 This appears on the display when the sewing machine has continued to be used for a certain period after the GrEASEUP notification appears without the grease being GrEASEU P applied without the reset procedure being carried out Apply grease and then carry out the reset procedure 44 Err 101 saa No 4 inside the control box set diP SW4 Set DIP switch No 4 to OFF 4 If an error code that is not listed above appears or if carrying out the specifie
15. adjusting screw 3 and check the lubrication amount repeatedly until the lubrication amount is correct 4 Check the lubrication amount again after the sewing machine has been used for approximately two hours 23 S 7200B 6 ADJUSTMENTS CAUTION Maintenance and inspection of the sewing machine Turn off the power switch and disconnect the power should only be carried out by a qualified technician cord from the wall outlet at the following times M otherwise the machine may operate if the treadle is o Ask your Brother dealer or a qualified electrician to depressed by mistake which could result in injury carry out any maintenance and inspection of the electrical system When carrying out inspection adjustment and If any safety devices have been removed be maintenance absolutely sure to re install them to their original When replacing consumable parts such as the positions and check that they operate correctly rotary hook and knife before using the machine If the power switch needs to be left on when carrying Use both hands to hold the machine head when out some adjustment be extremely careful to tilting it back or returning it to its original position If Observe all safety precautions only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught 6 1 Adjusting the actuator position The installation position for the actuator 1 can be adjusted to lt
16. amount should not be more that 80 2124M Instruction Is the anti spin spring attached manual Attach the anti spin spring Instruction Is the bobbin turning smoothly manual 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 Instruction manual 0751M 10 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 Instruction Is the machine properly threaded manual If it is incorrect thread the thread correctly Instruction Is the rotary hook sufficiently lubricated O 3 specifications manual If the oil gauge is down to the lower reference line in the oil gauge window add more oil Instruction Is the upper or lower thread tension too weak or too strong manual Adjust the upper thread or lower thread tension Instruction Is the upper thread may be loose because the thread take up spring manual operating range is too small Adjust the position of the thread take up spring 26 Is the rotary hook feed dog or other part damaged If they are damaged smooth them with an oiled grindstone or replace the damaged parts Is the thread path damaged If the thread path is damaged smooth it with sandpaper or replace the damaged part 0471
17. available are the type that controls the automatic presser foot lifter and the type that does not You can switch between the two types by A changing the hooking position of the spring 1 inside the treadle unit B setting DIP switch 2 and lt C gt setting the treadle stroke Specifications Treadle unit G Treadle unit H Operation Does not control automatic presser lifter Controls automatic presser lifter lt gt b Difference in spring position SS 1 7 O 1839M lt B gt DIP switch 2 OFF DIP switch 2 ON DIP switch lt When depressing the treadle forward gt lt When depressing the treadle forward gt setting The presser foot lifter control signal is not output The automatic presser foot lifter signal is output at when the treadle is being depressed the position before the treadle depression force suddenly changes lt C gt Carry out the setting in Setting method for Carry out the setting in Setting method for standard Signal setting standard depression strokes on page 58 Set the neutral position maximum forward position and maximum backward position depression strokes on page 58 Set the neutral position maximum forward position and maximum backward position The first modulation position for the treadle depres
18. cloth feed direction NOTE 18 Setting is enabled when Function No 61 is set to 1 NOTE 19 Operation is disabled when Function No 62 is set to 1 Presser foot is raised after needle bar is raised NOTE 20 Used when you would like to match the seam accurately during automatic backtacking Use Function No 78 to set the stop position and Function No 79 to change the time before restarting 11 S 7200B Function No 69 3 FUNCTION SETTINGS OPERATION PANEL 2 Sewing speed actuator 3 Option actuator No Initial value Setting range Setting details Actuator option function 0 No function 69 0 0 3 1 Stitch counter actuator When set as a sewing speed actuator Connect the switches to connector CN11 on the control circuit board CN11 Low speed Medium Switch speed switch High speed Switch 2250M When the low speed switch is pressed the sewing speed becomes 1 000 rpm The speed can be changed by setting Function No 122 When the medium speed switch is pressed the sewing speed becomes 3 000 rpm The speed can be changed by setting Function No 121 When the high speed switch is pressed the sewing speed returns to the maximum sewing speed that has been set using the MAX key When set as an option actuator Connect to connector CN9 on the control circuit board CN9 3 4 Option Actuator Set the operation using Function No 11
19. installing the control box DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury Removal 1 Remove the cable tie 1 and the shielded wire clips 2 and 3 in that order and then disconnect all of the connectors 4 to 7 from the sewing machine Be careful not to break the pawls of connectors 5 6 and 7 2 Disconnect the power supply connector 8 and the motor connector 9 3 Disconnect the ground wire 10 4 Loosen the nuts 11 and 12 without removing them 5 Remove the bolt 13 and nut 14 6 Pivot the control box around the bolt 15 and pull it out to remove it from the table Installation Install by following the removal procedure in reverse 49 S 7200B 10 CONTROL BOX AND MOTOR Lom H M MM eee 10 2 Control box and motor rating plate Control box Check the phase voltage and type for the control box Some specifications are identical for both single and three phase appears on name plate Model MD 7410 Single phase MD 7510 Three phase brother PHASE 1 or 3 4 Phase OUT PUT 550 W MD 7510 VOLTS 220 240 Voltage MD7410 HERTZ 50 60 144 52 CONTROL BOX BROTHER INDUSTRIES LTD
20. on presser foot lifting point 82 0 5 5 Treadle forward 1st step on presser foot dropping point 83 0 5 5 Treadle forward on starting point 84 0 5 5 Treadle variable speed range starting point 85 0 6 6 Treadle high speed range reaching point 86 0 2 2 Variable speed range starting point for standing operation variable speed pedal 87 0 2 2 High speed range reaching point for standing operation variable speed pedal Treadle speed curve 0 0 Constant Speed 1 Curves downward 2 2 Curves upward 88 0 0 2 1 Depression stroke 2957M p Settings indicated with are enabled when the power is turned off and then back on With the treadle neutral position as the O point the values in the forward direction are plus values and those in the backward direction are minus values so that the speeds accelerate or decelerate around the standard setting Refer to page 57 for details ex 1 Setting for Function No 80 80 7 80 0 80 7 gt Treadle backward stroke Neutral Depression stroke 2258M ex 2 Setting for Function No 83 Treadle backward stroke Neutral Depression stroke 2259M ex 3 Setting for Function No 85 A Treadle backward stroke Neutral Depression stroke 2260M S 7200B 16 3 FUNCTION SETTINGS OPERATION PANEL Function No 90 107 No Initial value Setting range Setting details 220 150 300 NS
21. the nut 4 4 Use a hexagon wrench to turn the adjusting screw 5 to adjust the floating amount To raise the presser foot 1 Turn the adjusting screw 5 clockwise To lower the presser foot 1 Turn the adjusting screw 5 counterclockwise 5 Tighten the nut 4 After making the adjustment sew a piece of material to check the floating amount S 7200B 7 REPLACING PARTS CAUTION Replacement of parts should only be carried out by a Use both hands to hold the machine head when qualified technician tilting it back or returning it to its original position If U ly th t part ified only one hand is used the weight of the machine bv Brotfier M PERS pv tae bere qao head may cause your hand to slip and your hand may get caught Turn off the power switch and disconnect the power cord before replacing any parts The machine may operate if the treadle is depressed by mistake which could result in injury Be sure to wear protective goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or eat the grease under any circumstances as they can cause vomiting and diarrhea Keep the oil out of the reach of children 7 1 Fixed knife 1 Tilt back the machine head 2 Remove the screw 1 and then remove the rotary hook stopper 2 3 Remove the screw 3 an
22. using automatic presser lifter ms ms and the presser foot is raised when sewing starts Stopping during start backtacking and speed during start backtacking 0 When treadle is returned to neutral start backtacking finishes and then operation stops and the speed is the start backtacking constant speed 31 0 0 1 1 When treadle is returned to neutral stopping is possible while start backtacking is in progress and the start backtacking speed corresponds to the treadle depression amount low speed up to start backtacking speed 32 300 ms 10 990 ms Presser foot lifter solenoid fully ON time Operation during pleat sewing setting 33 0 0 1 0 Reverse sewing operation when actuator switch is ON 1 Fixed stitch sewing operation when actuator switch is ON fixed stitch sewing recall function 34 0 or 1 0 1 Do not change this setting Presser foot soft down mode 35 0 0 1 0 Automatic mode See NOTE 8 1 Manual mode See NOTE 9 180 0 240 Presser foot lift time 36 seconds seconds 0 No timer function does not drop 3 minutes 1 240 Presser foot drops after set time Automatic presser foot lifter type 37 0 0 1 0 Solenoid type See NOTE 10 1 Pneumatic type See NOTE 11 38 Delay time for presser foot lifter solenoid to turn on after presser foot drop NOTE 12 49 ms 20 120 ms command 39 12 10 12 Voltage detection constant for presser foot lifter solenoid to turn on after NOTE 13 presser foot drop command Operation a
23. 0 2 2 Motor deceleration gain Do not change this setting 131 Do not change this setting NOTE 38 Setting is enabled when Function No 69 is set to 2 T Settings indicated with are enabled when the power is turned off and then back on Function No 132 136 The following function numbers show maintenance information No Description of displays 132 Cumulative power on time Actual time Displayed time x 10 133 Cumulative operating time Actual time Displayed time xxxx x 10 134 Cumulative grease up running time Time Display xxxx x 1 hour Grease life estimate 96 135 ROM version x xxx 136 Set maximum speed history rpm S 7200B 20 3 FUNCTION SETTINGS OPERATION PANEL 3 6 Clearing saved data Initialization Types of data that are cleared When saved data is cleared the following data are returned to factory default settings All data that has been set using the operation panel including function setting data lt Initializing the data Initializing all data 1 While pressing the RESET key on the operation panel turn on the power switch The main display will change to orange and iniT ALL will be displayed 2 Press the ENTER key Initialization will be carried out and the iniT ALL display will change to green 3 After this the operation panel and the treadle can be operated When an operation is carried out the display will return to t
24. 0 24N lt 03 gt 0 25 0 35N ns 0 3 0 5N Thread take up spring position The standard position of the thread take up spring 1 is 6 8 mm 4 6 mm for 5 specifications above the surface of the thread guide 3 when the presser foot 2 is lowered 1 Lower the presser foot 2 2 Loosen the set screw 4 3 Turn the thread tension bracket 5 to adjust the spring position 4 Securely tighten the set screw 4 Thread take up spring tension The standard tension of the thread take up spring 1 varies in accordance with the machine specifications as shown in the table II S specifications 0 1 0 24N specifications 0 25 0 35N 115 specifications 0 30 0 5N 1 Push the needle thread with your finger until it is slightly higher than the thread tension bracket 5 and so that the upper thread is not pulled out 2 Pull the upper thread down until the thread take up spring 1 is at the same height as the base of the thread guide 3 and then measure the tension of the thread take up spring 1 3 Insert a screwdriver into the slot of the tension stud 6 and turn the screwdriver to adjust the tension of the thread take up spring 1 NOTE If using the tension gauge 7 sold separately to measure the tension take the reading from the scale on the side of the red line S 7200B 26 6 ADJUSTMENTS 6 4 Adjusting arm thread guide R The standard position of arm thr
25. 00B 6 3 FUNCTION SETTINGS OPERATION PANEL Function No 16 28 No Initial value Setting range Setting details Overtime function 16 3 minutes 0 30 0 Not used minutes 1 30 Machine stops after continuous operation for set time and Err 8 is displayed Correction sewing function See NOTE 3 0 Half stitch correction sewing Single stitch correction sewing 17 0 0 2 1 No correction sewing Single stitch correction sewing 2 Reverse stitch reverse feed correction sewing Single stitch correction sewing Thread wiping and presser foot lift operation timing after thread trimming 18 20 ms 10 200 ms Motor 2249M 1 1 19 50 ms 10 200 ms Thiead wipig No 18 mm EE j gt No 20 1 20 50 ms 10 200 ms Presser foot lifting Needle up stop No 32 fully ON Start backtack sewing operation 21 0 0 1 0 Stitch number A B N stop 1 Stitch number A B A B N stop double End backtack sewing operation 22 0 0 1 0 Stitch number C D 1 Stitch number C D C D N stop double 2 0 stitches 99 Stitch number G NOTE 4 stitches 24 0 99 NOTE 5 0 stitches stitches Stitch number H 25 0 99 NOTE 6 0 stitches stitches Stitch number I Speed for moving to end backtack 26 0 0 4 0 Decelerates to low speed then end backtacking starts 1 Decelerates to end backtacking speed then end backtacking starts Cycle time can be shortened Conti
26. 300 001 S 7200B 44 8 APPLYING GREASE 3 050 specifications 1 2 I3 050 specifications lt 5 specifications 2 Turn the machine pulley to lower the needle bar until the hole is visible Turn the power switch to OFF Remove the screws and the set screws 3 Apply grease to each of the holes until the grease overflows slightly 4 Tighten the screws and the set screws in order to push the grease in 5 Turn the machine pulley by hand to move the needle bar up and down several times in order to disperse the grease 6 Use a cloth to wipe away any excess grease from around the screws and set screws and from underneath needle bar bush D 7 Carry out the reset procedure given below lt Resetting the grease consumption amount After the grease has been applied carry out the following procedure to reset the grease consumption amount 1 2 3 4 Turn the power switch to ON GrEASEUP will flash in the main display 1 the buzzer will sound Press the RESET key 2 The main display 1 will change to stitch number display mode Press and hold the LOCK key 4 for 2 seconds or more The lock icon 5 will switch off and the lock will be released Press the FUNC Function key 6 n 134 Pxxx will appear in green in the main display 1 Pxxx indicates the grease consumption amount For example P100 means that 100 of the grease has b
27. 6 6 ADJUSTMENTS 6 15 Adjusting the treadle Floating amount pum uM e NES Raise Lower 37 lt Forward depression sensitivity adjustment gt If the machine starts running at low speed when your foot is simply resting on the treadle or if the treadle pressure is felt to be too weak adjust the position a to c at which the treadle spring 1 is hooked onto the treadle lever 2 a is the weakest position and it becomes gradually stronger at b and c respectively lt Backward depression sensitivity adjustment gt 1 Loosen the nut 3 and turn the bolt 4 When the bolt 4 is tightened the treadle operation becomes heavier and when it is loosened the operation becomes lighter 2 Tighten the nut 3 lt Adjusting the treadle stroke gt Remove the nut 5 and then move the connecting rod joint 6 from the position in figure A to the position in figure B The treadle stroke will then be increased by approximately 27 At this time the treadle forward and backward depression sensitivity will change so readjust if necessary When sewing stretch materials and materials with long pile you can make minute adjustments to the floating amount for the presser foot 1 in accordance with the material 1 Turn the sewing machine pulley by hand to move the feed dog 2 below the needle plate 3 2 Use the lifting lever to lower the presser foot 1 3 Loosen
28. 9 At high speed No 60 0654B S 7200B 10 3 FUNCTION SETTINGS OPERATION PANEL Function No 61 68 No Initial value Setting range Setting details Highest needle position stop operation 61 0 0 1 0 Not used 1 Used 62 Thread wiping operation during highest needle position stop operation NOTE 18 0 0 1 0 Thread wiping occurs after needle stops in highest position 1 Thread wiping occurs after thread trimming and then needle bar is raised Thread trimming timer operation 63 0 0 1 0 Not used Thread trimming is off when needle bar is stopped at the up position 1 Used Time is set using Function No 73 0 Standard 1 Not used 64 0 2 Twin needle lock stitcher T 8422A 3 Do not change this setting 65 Delay time until reverse operation starts during highest needle position sto NOTE 18 150 ms 10 500 ms pup d a Presser foot lift timing during highest needle position stop operation 66 0 0 1 0 Presser foot is raised after needle bar is raised NOTE 18 1 Presser foot is raised before needle bar lift operation starts See NOTE 19 Highest needle position stop position setting z 0 degrees 20 44 0 20 NOTE 18 degrees S Becomes lower Becomes higher 2248M 68 Seam matching function during automatic backtacking NOTE 20 0 0 1 0 Operation does not stop when switching cloth feed direction 1 Operation momentarily stops when switching
29. A gt or lt B gt Adjust so that it is in a position where it is easy to operate 1 Remove the two screws 2 2 Move the switch setting base 3 to move the actuator 1 to the preferred position lt A gt or lt B gt 3 Tighten the two screws 2 S 7200B 24 6 ADJUSTMENTS 6 2 Adjusting the safety switch position The safety switch 1 is normally installed as shown in figure A However if the processing method used for the table leaves too much space between the machine head and the table hole it may adversely affect the operation of the safety Switch 1 Adjustment method The standard amount of clearance between the machine head and the table hole is 1 5 mm If the clearance is 3 5 mm or more install the safety switch 1 so that the washer 2 is on the machine head side as shown in Figure B fthe position cannot be satisfactorily adjusted in this way add more washers of the same thickness Safety switch operation 3691M If the spring stroke is too small the safety Switch will not operate 3 5 mm or more Sewing machine 1 5mm Clearance is too large By changing the position of the safety switch the required spring stroke can be maintained Reduce the clearance 3692M 25 S 7200B 6 ADJUSTMENTS 6 3 Adjusting the thread take up spring lt 005 03 gt 6 8 lt 005 gt ns 0 1
30. ANEL Function No 108 114 No Initial value Setting range Setting details 108 0 99 NOTE 30 0 needles needles Number of stitches for option output C1 109 NOTE 31 10 ms 0 990 ms Delay time until option output turns on C2 110 NOTE 31 0 ms 0 990 ms Option output on time C3 111 NOTE 32 0 ms 0 990 ms Delay time until option output turns on C4 112 NOTE 33 2000 ms 0 9900 ms Option output on time C5 113 0 99 NOTE 34 0 needles needles Number of stitches for option output C6 114 0 99 NOTE 34 0 needles needles Number of stitches for option output C7 NOTE 30 Setting is enabled when Function No 70 is set to 2 NOTE 31 Setting is enabled when Function No 70 is set to 4 NOTE 32 Setting is enabled when Function No 70 is set to 5 NOTE 33 Setting is enabled when Function No 70 is set to 2 or 5 NOTE 34 The stitch number control output signal can be set in accordance with the variable input signal Stitch number control output signal The variable input signal should be connected to connector CN6 The output signal is sent to connector CN11 CN6 1 45V 2 External input 9 OV CN11 1 45V 3 External output signal is open collector output within maximum 10 mA 7 OV 2262M Motor 113 gt 1 Variable input signal No 114
31. M 11 Incorrect thread trimming Is the fixed knife or movable knife damaged or worn Upper and lower threads Replace the fixed knife or the movable knife 38 are both being trimmed 12 Incorrect thread trimming Is the needle properly installed Upper thread or lower If it is incorrect install the needle correctly Instruction thread is not being Is the fixed knife or movable knife blunt manual trimmed Replace the fixed knife or the movable knife 38 S 7200B 66 13 TROUBLESHOOTING Problem Possible cause Page 13 Broken needles s the material being pushed or pulled with excessive force during sewing sthe needle properly installed If it is incorrect install the needle correctly Instruction s the needle bent is the needle tip blunt or is the needle hole manual blocked Replace the needle TERN 08 e Is the needle and rotary hook timing correct 2 Adjust the height of the needle bar 30 Zy Adjust the clearance between the needle and the tip of the rotary hook 31 sthe needle timing too advanced with respect to the feed dog Retard the needle timing 30 Caution 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 Furthermore we recommend that through steps be taken to account for such needles to comply with product liability regulations
32. Operation Controls automatic presser lifter presser lifter Function Symbol No forward back 1st step Forward back 1st step No diagram Spring position setting modulation modulation below Figure a on previous page Figure b on previous page Anchen Length from 50 Force N Length from 50 Force N mm mm S0 Neutral point 0 0 82 51 Forward automatic presser _ 2 NOTE 1 40 lifter operating point 83 S2 Low speed operation 3 10 5 25 starting point 84 S3 Speed change starting point 6 7 85 S4 Maximum speed reaching 85 1 55 1 Se SEXE TO War 14 5 12 14 5 32 depression point 81 S6 Back automatic presser 2 NOTE 2 44 lifter operating point Thread trimmer operating 80 S7 5 22 5 35 point S8 Maximum back depression 8 28 8 43 point NOTE 1 Setting is enabled when DIP switch 1 is set to ON and Function No 13 is set to 1 NOTE 2 Setting is enabled when Function No 12 is set to 0 When the connecting rod installation position is on the inside the measurement value is the amount of movement of the treadle from the neutral position to the forward position and to the backward position For treadle unit H the point of change F in the forward depression force is between S1 and S2 and the point of change R in the backward depression force is between S6 and S7 Speed Backward depression Neutral amp Forward depression 1841M
33. Output signal i 1 lt lt 2263M NOTE If Function No 112 and No 113 are set to 0 output is synchronized with the variable input signal S 7200B 18 3 FUNCTION SETTINGS OPERATION PANEL Function No 115 118 No Initial value Setting range Setting details 115 NOTE 35 10 1 0 ms 1 49 0 1 4 9 ms On time when solenoid type presser lifter solenoid is chopping Presser foot lifting 4 gt No 32 fully ON No 115 5ms 2264M 116 NOTE 36 25 2 5 ms 1 49 0 1 4 9 ms On time when pneumatic type presser lifter solenoid is chopping Presser foot 1 liftin 4 5 9 1 No 32 fully ON 5ms i 2265M 117 11 1 1 ms 1 49 0 1 4 9 ms On time when quick reverse solenoid is chopping Quick reverse _ solenoid n Es i 0 117 5ms 85ms fully ON EAS 2266M 118 NOTE 37 2 TD attern setting when name label key is on F Name label attaching tanh ITI TI 7 H G F E Pocket sewing 1 I H G F E Pocket sewing 2 I H G F E H G F E K L M OXG A oM cC TI ITI ITI ITI ITI M M NOTE 35 Setting is enabled when Function No 37 is set to 0 NOTE 36 Setting is enabled when Function No 37 is set to 1 NOTE 37 When set to 1 stitch number G is set for function No 23 W
34. Refer to B in the illustration To improve thread tightening advance the needle timing Turn the vertical cam 3 in the direction of C Refer to C in the illustration NOTE Do not turn the vertical cam 3 too far in the direction of C otherwise it could cause the needle to break 3 After adjustment is completed securely tighten the two screws 5 30 6 ADJUSTMENTS 6 10 Adjusting the needle and rotary hook timing 2290M The tip of the rotary hook 3 should be aligned with the center of the needle 4 when the needle bar 1 moves up 2 from its lowest position to the position where reference line 1 b which is the line at the bottom of the needle bar 1 third A line from the bottom when using a DA x 1 needle is aligned with the lower edge of the needle bar bush D 2 as shown M the illustration x AT At this time the gap between the upper edge of the needle hole and the rotary hook tip 3 will be 0 5 0 7 mm b DA Ds 003 gt 1 8mm 1 Turn the machine pulley to raise the needle bar 1 from 5 its lowest position until reference line b is aligned with x1 2 2mm the lower edge of the needle bar bush D 2 as shown in the illustration The needle should rise by 1 8 mm 2 2 mm for 5 specifications and the distance from the needle hole to the tip of the rotary hook should be 0 5 0 7 mm 2 Loosen the three set screws 5 and then align the
35. S 7200B 2251M 12 3 FUNCTION SETTINGS OPERATION PANEL Function No 70 72 No Initial value Setting range Setting details Option output setting 0 Puller 1 Needle cooler synchronized output during operation 70 6 0 6 2 Air saving NOTE 21 3 Condense 4 Chain stitch thread trimming thread wiping 5 Pneumatic wiper 6 No output 71 0 99 Number of stitches from sewing start until puller is lowered NOTE 22 0 needles needles 0 Synchronized with presser foot lifter operation 1 99 Puller is lowered after the set number of stitches is sewn 2 10 E Time until puller is lowered NOTE 22 seconds seconds NOTE 21 The factory default setting is for no output so the output must be set Output is from pins 2 4 of connector CN15 on the control circuit board NOTE 22 Setting is enabled when Function No 70 is set to 0 When set to puller gt When the sewing machine is stopped the puller is lowered after 10 seconds in synchronization with the automatic presser foot lifter During sewing the puller is only raised when the reverse mechanism operates The time of 10 seconds can be changed by setting Function No 72 Function No 71 can be used to set the number of stitches until the puller is lowered after sewing starts If the puller is raised in synchronization with the automatic presser foot lifter while the sewing machine is stopped after thread trimming t
36. S 7200B SERVICE MANUAL MD 741B 751B 741C 751C Please read this manual before making any adjustments SINGLE NEEDLE DIRECT DRIVE STRAIGHT LOCK STITCHER WITH THREAD TRIMMER This service manual is intended for S 7200B be sure to read the S 7200B instruction manual before this manual Carefully read the SAFETY INSTRUCTIONS and the whole of this manual to understand this product before you start maintenance As a result of research and improvements regarding this product some details of this manual may not be the same as those for the product you purchased If you have any questions regarding this product please contact a Brother dealer S 7200B SAFETY INSTRUCTIONS 1 Safety indications and their meanings This service 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 The instructions which follow this term indicate situations where failure to follow the CAUTION instructions could cause injury when using the machine or physical damage to equipment and surroundings Symbols A dup This symbol A indicates something that you should
37. allation gt Carry out steps 2 to 5 and step 10 of Timing belt installation 40 7 REPLACING PARTS s nns lt 005 gt 41 lt Timing belt installation check gt 1 Check that the needle and rotary hook timing is correct Refer to 6 10 Adjusting the needle and rotary hook timing If they are correct continue from step 5 otherwise continue from step 2 2 Check that the needle and feed mechanism timing is correct Turn the machine pulley 5 forward to lower the feed dog 15 from its highest position until it is aligned with the top of the needle plate 16 and check that the tip of the needle is at the following position at this time lt 105 8 The top of the feed dog 15 and the top of the needle plate 16 should be aligned and the point of the needle should be approximately 1 mm below the needle plate 16 I5 The top of the feed dog 15 and the top of the needle plate 16 should be aligned and there should be a clearance of approximately 3 mm between the point of the needle and the needle plate 16 If itis not in the correct position carry out the following steps 1 Tilt back the machine head and then loosen the two set screws 18 2 Turn timing pulley D 6 forward to lower the feed dog 15 until it is at the same height as the needle plate 16 3 While holding the vertical cam 19 with one hand so that it will not move turn the mach
38. amage to the machine Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught If an error occurs in machine or if abnormal noises or smells are noticed immediately turn off the power switch Then contact your nearest Brother dealer or a qualified technician If the machine develops a problem contact your nearest Brother dealer or a qualified technician Be sure to wear protective goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or eat the grease under any circumstances as they can cause vomiting and diarrhea Keep the oil out of the reach of children Use only the proper replacement parts as specified by Brother If the power switch needs to be left on when carrying out some adjustment be extremely careful to observe all safety precautions Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught Use only the proper replacement parts as specified by Brother If any safety devices have been removed be absolutely sure to re install them to their original pos
39. arry out the reset procedure given below To continue sewing without applying grease After the grease has been applied carry out the following procedure to reset the grease consumption amount 1 Set DIP switch 3 inside the control box to OFF This will cancel the lock so that the functions can be set 2 While pressing the end backtack key 4 press the power switch to turn on the power 3 Press the start backtack key 3 so that G is displayed in the top row of the stitch number display 4 Press the end backtack key 4 to set the value in the bottom row of the stitch number display to 1 5 Then press and hold the end backtack key 4 for 5 seconds or more The display will turn off 6 After this Gr will flash and the reset operation will be complete 7 After the reset operation is complete set DIP switch 3 to ON The settings will be locked 2139M 47 S 7200B 9 CONTROL SYSTEM 9 CONTROL SYSTEM Turn on the power switch 1 A When the treadle is depressed 1 2 When the treadle 2 is depressed a voltage corresponding to the amount of treadle depression is transmitted by the treadle unit 3 to the control box 4 The DD motor 5 that is directly linked to the sewing machine receives a voltage that corresponds to the treadle depression amount from the control box 4 causing the DD motor 5 to operate at the speed represented by the treadle depression am
40. be careful of The picture inside the triangle indicates the nature of the caution that must be taken For example the symbol at left means beware of injury This symbol S indicates something that you must not do EERO This symbol o indicates something that you must do The picture inside the circle indicates the nature of the thing that must be done For example the symbol at left means you must make the ground connection S 7200B i 2 Notes on safety DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury CAUTION 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 Sources of strong electrical noise may cause problems with correct operation Any fluctuations in the power supply voltage should be within 10 of the rated voltage for the machine Voltage fluctuations which are greater than this may cause problems with correct operation The power supply capacity should be greater than the requirements for the sewing machine s power consumption Insufficient power supply capacity may cause problems with correct operation The ambient temperature should be wit
41. ch has casters the casters should be secured in such a way so that they cannot move Turn off the power switch before carrying out cleaning The machine may operate if the treadle is depressed by mistake which could result in injury Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught Disassembly assembly maintenance and inspection of the sewing machine should only be carried out by a qualified technician Ask your Brother dealer or a qualified electrician to carry out any maintenance and inspection of the electrical system Turn off the power switch and disconnect the power cord from the wall outlet at the following times otherwise the machine may operate if the treadle is depressed by mistake which could result in injury When carrying out inspection adjustment and maintenance When replacing consumable parts such as the rotary hook and knife Turn off the power switch before inserting or removing the plug otherwise damage to the control box could result A A A Q Q S 7200B Attach all safety devices before using the sewing machine If the machine is used without these devices attached injury may result 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 d
42. cktack key 4 Pr will appear in the stitch number display 3 With the treadle depressed backward to the maximum backward position press the start backtack key 4 The stitch number display 3 will switch off 5 Completion of setting 1 Turn off the power switch 1 2 Set DIP switch No 4 to OFF 61 S 7200B 12 STANDING OPERATION PEDAL 12 STANDING OPERATION PEDAL The foot plug assembly CDD J04099 001 that is sold separately is required 12 1 Installing the foot plug DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury 1 Connect the foot plug 1 to connector CN3 on the control circuit board 2 Connect the standing pedal connector 2 to the foot plug 1 3 Secure the cord 3 of the standing pedal with the shielded wire clip 5 and the cable tie 4 S 7200B 62 12 STANDING OPERATION PEDAL 12 2 Connectors At foot plug z e Standing operation pedal 9P connector DC 8 V High speed switch Thread trimmer switch SOV Spare Low speed switch Presser foot switch Variable speed input Ground X oo 1 o BON
43. comes lower 2282M Becomes higher 3 6 qi mem Te 29 6 ADJUSTMENTS The standard height of the feed dog 1 when it is at its maximum height above the top of the needle plate is 0 8 mm for JOS 9 specifications and 1 2 mm for 5 specifica tions gt D e S 7200B Turn the pulley until the feed dog 1 rises to the highest position Tilt back the machine head Loosen the screw 2 Turn the feed lifting rock bracket stud 3 within a range of 90 from the reference line 4 to adjust the vertical height of the feed bar 5 Fig A Tighten the screw 2 If you are worried about the angle of the feed dog 1 turn the shaft 6 while carrying out the above adjustment Fig B Refer to 6 7 Adjusting the feed dog angle on the next page for details of this operation 28 6 ADJUSTMENTS 6 7 Adjusting the feed dog angle Raise the front Lower the front 2 e EET 3 Raise the front Parallel Needl 4 em D Standard 9 07 Lower the front Raise the front Os M Standard 5 e Standard Back is raised 2285M 29 S 7200B Lower the front The standard angle for the feed dog 1 when it is at its highest position above the needle plate is when the mark or V groove on the shaft 2 is aligned with the feed rocker bracket arm 3 and the feed dog 1 is parallel to the needle plate 1 Tur
44. d remedy does not solve the problem contact the place of purchase S 7200B 72 13 TROUBLESHOOTING ale Error code If an error code is displayed on the control box panel 1 Make a note of the error code and then turn off the power 2 After the display of the control box panel turns off eliminate the cause of the error and then turn the power switch back on 3161M Error code Possible cause Page f you continue to use the sewing machine for a certain length of time without applying 0 grease and without carrying out the reset operation after GU has appeared on the control box panel this will be displayed Grease up Apply grease and then carry out the reset procedure 46 s DIP switch No 4 inside the control box set to ON Set DIP switch No 4 to OFF 4 1 Dip switch 4 Overvoltage Overcurrent Encoder error Motor lock Safety switch operated Voltage drop Panel communication error Over time Motor overheating abnormally Solenoid overcurrent Problem with motor overheating sensor Solenoid power supply error Treadle unit error Head detector unit error Problem with sewing machine motor operation Thread trimming solenoid timeout EEROM error lalalalalalala ona Control box overheating N e Treadle pedal position error 21 Thermistor error Refer to pages 69 72 for the items correspond
45. d reset the notification by carrying out the reset procedure on the following page If you continue to use the sewing machine after the GU notification appears without applying grease or without carrying out the reset procedure 0 will appear in the stitch number display 1 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 f you continue to use the sewing machine after carrying out the reset procedure but without applying grease problems with the sewing machine may result Applying grease Use Brother specified GREASE SA7300 001 gt gt NR SA2357 001 Using the tube SS SA7300 001 S 7200B 46 8 APPLYING GREASE 3 050 specifications I3 050 specifications gt J5 specifications gt Turn the machine pulley to lower the needle bar until the hole is visible 1 Turn the power switch to OFF 2 Remove the screws and the set screws 3 Apply grease to each of the holes until the grease overflows slightly 4 Tighten the screws and the set screws in order to push the grease in 5 Turn the machine pulley by hand to move the needle bar up and down several times in order to disperse the grease 6 Use a cloth to wipe away any excess grease from around the screws and set screws and from underneath needle bar bush D 7 C
46. d then remove the fixed knife 4 Carry out the above steps in reverse to install the fixed knife 4 Sharpening the fixed knife If the cutting performance deteriorates sharpen the fixed knife 4 on a whetstone 5 as shown in the illustration 1 Remove the needle 2 Lift up the presser foot using the lifting lever 3 Remove the two screws 1 and then remove the needle plate 2 4 Turn the machine pulley to raise the needle bar to its highest position 5 Tilt back the machine head 6 Push the thread trimmer connecting rod 3 in the direction of the arrow until the two screws 4 can be Seen 7 Remove the two screws 4 and then remove the movable knife 5 Carry out the above steps in reverse to install the movable knife 5 S 7200B 38 7 REPLACING PARTS 7 3 Motor and timing belt 39 lt Timing belt removal gt 1 Remove the side plate 1 2 Remove the three screws 2 and then remove the motor cover 3 3 Tilt back the machine head 4 While pushing the timing belt 4 in the direction of the arrow turn the machine pulley 5 forward to remove the timing belt 4 from timing pulley D 6 5 Return the machine head to its original position 6 Turn the machine pulley 5 until the four set screws 8 on the joint 7 are facing toward the front Loosen the two set screws 8 at the left by about fiv
47. e main display 1 and a buzzer sounds when the power switch is turned on it means that grease needs to be applied The sewing machine will not operate at this time even if the treadle is depressed Apply grease as required while referring to the following for details To continue sewing without applying grease 1 Press the RESET key 2 2 The main display 1 will change to stitch number display mode and sewing will be possible when the treadle is depressed The power indicator 3 will keep flashing NOTE If you do not apply grease when the GrEASEUP notification appears the notification will continue to appear and the power indicator 3 will flash each time the power is turned on until you reset the notification by carrying out the procedure on the following page If you continue to use the sewing machine after the GrEASEUP notification appears without applying grease or without carrying out the reset procedure 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 If you continue to use the sewing machine after carrying out the reset procedure but without applying grease problems with the sewing machine may result Applying grease Use Brother specified GREASE SA7300 001 gt gt OR SA2357 001 Using the tube K E SA7
48. e turns each 7 Remove the three screws 9 and then remove the machine pulley 5 8 Remove the three screws 10 and then remove the motor 11 If it is difficult to remove the motor 11 tighten one of the removed screws 10 into the screw hole a at the left or right The motor 11 can then be pulled forward and removed Fig A 9 Pull out the timing belt 4 by hand while being careful not to get it caught on the fan 12 lt Motor removal gt Carry out steps 1 and 2 and steps 6 to 8 of Timing belt removal S 7200B 7 REPLACING PARTS lt 5 ns S 7200B lt Timing belt installation gt 1 Place the timing belt 4 onto timing pulley U 13 2 Secure the motor 11 with the three screws 10 Insert the motor 11 so that the upper set screws 8 on the joint 7 are facing toward the front and also so that the notch b on the motor shaft 14 is facing toward the front 3 Tighten the two set screws 8 at the left side of the joint 7 starting from the one at the top Check that the notch c on the motor is in the position shown in the illustration and that the upper set screws 8 on the joint 7 is facing toward the front at this time Secure the motor cover 3 with the three screws 2 Raise the thread take up to its highest position turn the machine pulley 5 s
49. ead guide R 1 is the position where the screw 2 is in the center of the adjustable Becomes greater Becomes less range for arm thread guide R 1 6 5 Adjusting the presser foot height NOOO 27 S 7200B To adjust the position loosen the screw 2 and then move arm thread guide R 1 When sewing thick material move arm thread guide R 1 to the left The thread take up amount will become greater When sewing thin material move arm thread guide R 1 to the right The thread take up amount will become less 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 Loosen the nut 3 of the adjustment screw 4 and then turn the adjustment screw 4 so that there is no pressure applied to the presser foot Raise the lifting lever 2 The presser foot 1 will also rise Remove the oil cap 5 Loosen the bolt 6 and then move the presser bar 7 up or down until the presser foot 1 is at the standard height of 6 mm Tighten the bolt 6 Replace the oil cap 5 Adjust the presser foot pressure using the adjustment Screw 4 and then tighten the nut 3 6 6 Adjusting of the feed dog height lt 5 nns CI 0 8mm AC lt 005 gt 1 2mm Becomes higher a Becomes higher 3 Needle plate L m 2 Standard Becomes lower Becomes higher Standard Standard Be
50. een consumed Press the rightmost XV key 7 The Pxxx will change to 0 Press and hold the ENTER key 8 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 Depress the treadle to run the sewing machine for 1 second or more Turn the power switch to OFF This completes the reset procedure 2139M 45 S 7200B 8 APPLYING GREASE 3 150 specifications 8 2 When using the control box panel DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury If GU flashes in the stitch number display 1 on the control box panel when the power switch is turned on it indicates that it is time for grease to be applied The sewing machine will not operate at this time even if the treadle is depressed Apply grease as required while referring to the following for details To continue sewing without applying grease 1 Press the start backtack key 3 2 The GU in the stitch number display 1 will stop flashing and disappear and sewing will be possible when the treadle is depressed The power indicator 2 will flash NOTE GU will appear each time the power is turned on until you apply grease an
51. ees Pause position when switching feed direction 79 XM MT NOTE 26 100 ms 10 500 ms Pause time when switching feed direction NOTE 23 Setting is enabled when Function No 63 is set to 1 NOTE 24 Setting is enabled when Function No 22 or No 26 is set to 1 NOTE 25 Setting is enabled when Function No 68 is set to 1 The stopping position is the angle after the need up signal turns on NOTE 26 Setting is enabled when Function No 68 is set to 1 The reverse feed mechanism switches at the stopping position When the stopping time has elapsed the sewing machine restarts automatically Settings for Function Nos 74 77 f the values are set to values that are less than the initial value direction the quick reverse solenoid on off timing becomes faster If the seam length immediately before switching occurs is short change the setting to a value in the direction f the values are set to values that are greater than the initial value direction the quick reverse solenoid on off timing becomes slower If the seam length immediately after switching occurs is short change the setting to a value in the direction 15 S 7200B 3 FUNCTION SETTINGS OPERATION PANEL Function No 80 88 No Initial value Setting range Setting details 80 0 7 7 Treadle backward on thread trimming point 81 0 5 5 Treadle backward 1st step
52. er foot 3 Run the machine at the normal sewing speed for 1 approximately 1 minute without sewing any material Approx 70mm following the same start stop pattern as when actually sewing 4 Place the lubrication amount check sheet 1 underneath the rotary hook 2 and hold it there Then run the sewing machine at the normal sewing speed for 8 seconds Any type of paper can be used as the lubrication amount check sheet 1 5 Check the amount of oil which has spattered onto the sheet If adjustment is necessary carry out the following operations in Adjusting the lubrication amount Spattered oil NOTE If the lubrication amount does not match the correct Too much Correct Too little amount shown in the illustration at left if the amount of spattered oil is too much or none at all turn the adjusting screw 3 clockwise to fully tighten it turn it back counterclockwise by 2 1 2 turns and then carry out the following adjustment Adjusting the lubrication amount 1 Tilt back the machine head 2 Turn the adjusting screw 3 to adjust the lubrication amount f the rotary hook adjusting screw 3 is turned clockwise the lubrication amount becomes greater If the rotary hook adjusting screw 3 is turned Less oil More oil counterclockwise the lubrication amount becomes MA smaller 3 Check the lubrication amount again according to the procedure given in Checking the lubrication amount above Turn the
53. er has been turned on When the control box has been replaced When a sewing machine with different speed specifications to the control box is connected NOTE When the power switch is turned on any of the sewing machine s sewing speeds that are different from the setting data in the head detector unit are reset automatically When initialization is complete the main display will change to green and init rPM will be displayed After this the operation panel and the treadle can be operated When an operation is carried out the display will return to the normal display 24 S 7200B 4 INITIALIZING THE CONTROL BOX PANEL 4 INITIALIZING THE CONTROL BOX PANEL This returns the control box panel settings to the factory default settings NOTE The control box panel will not operate when the machine head operation panel is connected DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury Set DIP switch 3 to OFF This will cancel the lock so that the functions can be set D Control box OFF 3143M 2 While pressing the end backtack key 1 press the power A B switch 2 to turn on the power fon i fi cn Acidi 0706B 3 A 1 Press the start backtack key 3 so that is displayed in ale 3
54. esser lifter Solenoid Check the resistances of the solenoids 55 overcurrent Problem with control P C board Replace the control box 49 Err 11 s connector CN5 inside the motor disconnected Insert the connector securely Problem with motor over heating sensor 3116M S 7200B 70 13 TROUBLESHOOTING Treadle pedal position error Problem with treadle unit Replace the treadle unit Error code Possible cause Page Is solenoid fuse F2 5A blown Err 12 Replace the fuse S 53 Solenoid power g 9 supply error LJ Problem with control P C board z Replace the control box 49 3702M Err 13 Is the treadle unit connector inside the control box disconnected Treadle unit Insert the connector securely 52 error Is there an open circuit in the treadle connector harness Replace the treadle unit 3158M Problem with head detector unit Err 14 Check that the head detector unit Head detector connector inside the control box is unit error securely inserted Replace the head detector unit 52 3703M Problem with motor Err 1 5 Replace the motor 39 Problem Problem with power board Open Replace the control box 49 Err 16 This is displayed if the sewing machine motor locks during thread trimming nu
55. f receiving a serious electric shock Safety devices and problems with correct operation may also occur A Finger guard B Thread take up cover 4 Direction of operation Vv Control box S 7200B CONTENTS 1 MACHINE SPECIFICATIONS 1 2 NOTES ON HANDLING 2 3 FUNCTION SETTINGS OPERATION PANEL 3 3 1 Maximum sewing speed and start backtack sewing speed setting methods 3 3 2 Using the LOCK 4 3 3 Setting the DIP 4 3 4 Setting functions sss 5 3 5 Function List eoe ettet cp 6 3 6 Clearing saved data Initialization 21 4 INITIALIZING THE CONTROL BOX 22 5 ADJUSTING THE ROTARY HOOK LUBRICATION AMOUNT O 030 specifications 23 6 ADJUSTMENTS 24 6 1 Adjusting the actuator position 24 6 2 Adjusting the safety switch 25 6 3 Adjusting the thread take up spring 26 6 4 Adjusting arm thread guide 27 6 5 Adjusting the presser foot 27 6 6 Adjusting of the feed dog height 28 6 7 Adjusting the feed dog angle
56. f the LOCK key icon 1 is on release the lock before carrying out the following operations 2232M 1 The main display will change from an orange display to a Maximum sewing speed Start backtack sewing speed 2233M 2 Maximum sewing speed setting The maximum sewing speed can be set to a speed from 220 rpm to the maximum sewing speed that has been set for the head detector unit If all numbers in the sewing speed control display 2 are illuminated sewing will be carried out at the maximum speed that is set here when the treadle is fully depressed Example 4 500 rpm 2 2234M 2235M The start backtack sewing speed can be set to a speed from 220 rpm to 3 000 rpm The factory default setting is 1 800 rpm Example 1 600 rpm 2236M When sewing starts the sewing speed display disappears and returns to the orange display 2159M NOTE When the main display is green normal key operations such as the start backtack key and the fixed stitch key cannot be used Press the MAX key once more to clear the sewing speed display and return to the orange display Normal key operations can then be carried out 3 S 7200B 3 FUNCTION SETTINGS OPERATION PANEL 3 2 Using the LOCK key When the power switch is turned on the LOCK key 1 turns on The icon 2 is illuminated The key operation that has been set using Function No 101 will be disabled in order
57. f the power switch and disconnect the power cord from the wall outlet before carrying out these operations The machine may operate if the treadle is depressed by mistake which could result in injury If the power switch needs to be left on when carrying out some adjustment be extremely careful to observe all safety precautions Motor 1 Disconnect the motor connector 4P 1 from the control box 2 Measure the resistance of the motor connector 1 using an ohmmeter in the x 1 range If the value is as shown in the table below the connector is normal Between 2 3 Between 3 4 Approx 1 60 Between 4 2 1 Disconnect the power supply connector 6P 2 from the control box 2 Turn on the power switch 3 Measure the voltage at the power supply connector 2 using the AC voltage range of a multimeter and check that the voltage is within the allowable range for the specified voltage rating Ground wire 100 V type 100 120 V Measure the AC voltage between terminals 2 3 200 V type 200 240 V A For three phase 200 V type Measure the AC voltage between terminals 4 5 5 6 and 6 4 B For single phase Measure the AC voltage between terminals 4 6 S 7200B 54 10 CONTROL BOX AND MOTOR 10 5 Checking the solenoids DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control b
58. fter knee switch is used to raise and lower presser foot See NOTE 14 40 0 0 1 0 Presser foot cannot be raised and lowered by depressing the treadle backward 1 Above operation is possible NOTE 8 Adjustment of Function No 39 is necessary NOTE 9 Adjustment of Function No 38 is necessary NOTE 10 NOTE 11 NOTE 12 Duty during chopping can be changed using Function No 115 Duty during chopping can be changed using Function No 116 Only enabled when Function No 35 is set to 1 NOTE 13 Only enabled when Function No 35 is set to 0 If set to 10 response is fastest and operating noise is greatest NOTE 14 Setting is only enabled when DIP switch 1 is set to OFF s Enabled if the control box model is MD 741A 751A Ss Alternating The presser foot is raised or lowered each time the optional actuator is pressed Momentary The presser foot is raised only while the optional actuator is being pressed S 7200B 3 FUNCTION SETTINGS OPERATION PANEL Function No 41 55 No Initial value Setting range Setting details 41 0 1 Presser foot lifting when treadle is depressed backward to 1st step after returning to neutral 0 Possible 1 Not possible 42 Operation when treadle is depressed backward 0 Thread trimming operation 1 Thread trimming operation disabled presser foot is raised when treadle is depressed backward 43 Depressed backward o
59. g method for standard depression strokes 12 STANDING OPERATION PEDAL 12 1 Installing the foot plug 12 2 Connectors 13 TROUBLESHOOTING 13 1 Sewing 13 2 Error code displays 14 SEGMENT DISPLAY DEFINITION 1 MACHINE SPECIFICATIONS 1 MACHINE SPECIFICATIONS 3 4 Quick reverse O O Thread wiper BROTHER INDUSTRIE 0 3 5 Lubrication type Minimum lubrication Semi dry Complete dry S 3 5 Use For light weight For medium For heavy weight and difficult to sew weight materials materials materials 335 43S 453 303 403 305 45S 333 433 405 Max sewing speed 4 000 rpm 5 000 rpm 4 500 rpm Start backtacking continuous 220 3 000 rpm backtacking speed End backtacking speed 1 800 rpm Max stitch length 4 2 mm 5mm Presser foot Lifting lever 6 mm height Knee lifter 16 mm Feed dog height 0 8 mm 1 2 mm Needle DBx1 DPx5 NS 9 11 11 18 19 22 Motor AC servo motor 4 pole 450W Control circuit Microprocessor When sewing at speeds of 4 000 rpm or higher set the stitch length to 4 2 mm or less Rotary hook 33S 303 403 305 45S 43S 333 433 405 453 Lubricated Lubricated Lubricated Rotary hook RP for light materials for medium materials for heavy materials lubrication free rota
60. he normal display Initializing only speed data 1 While pressing the MAX key on the operation panel turn on the power switch The main display will change to orange and iniT rPM will be displayed 2 Press the ENTER key The speed data will be initialized to the speed data from the head detector unit and the iniT rPM display will change to green 3 After this the operation panel and the treadle can be operated When an operation is carried out the display will return to the normal display Initializing only the function setting data 1 While pressing the FUNC key on the operation panel turn on the power switch The main display will change to orange and iniT FunC will be displayed 2 Press the ENTER key Initialization of the function setting data will be carried out and the iniT FunC display will change to green 3 After this the operation panel and the treadle can be operated When an operation is carried out the display will return to the normal display Clearing data automatically When the power is turned on for the first time the treadle and the operation panel cannot be operated for a period of approximately 4 seconds After approximately 4 seconds the main display will change to green and init rPM will be displayed rPM means that the sewing machine s speed settings have been initialized In addition this display will also appear in the following cases approximately 4 seconds after the pow
61. hen set to 2 stitch number G is set for function No 23 and stitch number H is set for Function No 24 When set to 3 stitch number G is set for function No 23 stitch number H is set for Function No 24 and stitch number is set for Function No 25 This step is skipped if the number of stitches is zero 19 S 7200B Function No 119 131 3 FUNCTION SETTINGS OPERATION PANEL No Initial value Setting range Setting details 119 3 Do not change this setting 120 5 Do not change this setting NOTE 38 3000 rpm Speed when medium speed switch is on ie 38 1000 rpm SE Speed when low speed switch is on 123 AS 20 90 Servo lock release angle Do not change this setting degrees degrees Material edge sensor logic selection 124 0 0 1 0 Detects material absent 1 Detects material present Servo lock operation 0 None 129 0 Ma 1 When stopped 2 When presser foot lifting signal is on 0 120 Servo lock timer setting 126 1 seconds seconds 0 No timer operation 1 120 Timer operates 1 120 seconds 127 100 Do not change this setting Flicker reduction function when flickering occurs from fluorescent light 0 None 1 Medium flicker reduction 15 0 2 Low flicker reduction 3 High flicker reduction 4 Do not use this setting otherwise the motor will overheat 129 0 2 2 Motor acceleration gain Do not change this setting 130
62. hin the range of 5 C to 35 C during use Temperatures which are lower or higher than this may cause problems with correct operation The relative humidity should be within the range of 45 to 85 during use and no dew formation should occur in any devices Excessively dry or humid environments and dew formation may cause problems with correct operation In the event of an electrical storm turn off the power and disconnect the power cord from the wall outlet Lightning may cause problems with correct operation Installation 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 more than 44 kg The installation should be carried out by two or more people Do not connent the power cord until installation is complete The machine may operate if the treadle is depressed by mistake which could result in injury Turn off the power switch before inserting or removing the plug otherwise damage to the control box could result 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 S 7200B When securing the cords do not bend the cords excessively or fasten them too hard with staples otherwise there is the danger that f
63. his operation occurs When set to needle cooler synchronized output during operation Output is synchronized with motor operation Motor Option _ lt When set to air saving gt 2252M Output only occurs at the sewing start and the sewing end A material edge sensor S2 is required for output at the sewing end Function No 108 is used to set the number of stitches at the sewing start Output only occurs while the number of stitches set are being sewed after sewing starts The number of stitches at the sewing end is set by fixed stitch number E at the operation panel Output occurs when the edge of the material is detected The delay time after thread trimming until output turns off is set using Function No 112 If the needle stops in the down position after the edge of the material is detected output turns off when the needle stops Motor EE 1 1 ELE IMS Needle up signal IRSE TEE E 1 I 1 1 b 1 i No 108 gt Material edge sensor signal Fixed stitch number E 4 gt 2253M 13 S 7200B 3 FUNCTION SETTINGS OPERATION PANEL When set to condense gt Start backtacking or end backtacking must be set Forthe sewing start set stitch number B to 0 Output will occur while stitches for stitch number A are being sewn Forthe sewing end set stitch number C to 0 Output will occur while stitches for stitch number D are being sewn Stop Ope
64. ine pulley 5 forward to lower the needle to the correct position 4 Tighten the two set screws 18 3 Adjust the needle and rotary hook timing so that it is correct Refer to 6 10 Adjusting the needle and rotary hook timing 4 Check that the thread trimming timing is correct If it is not correct adjust it by following the adjustment procedure Refer to 6 11 Adjusting the thread trimming timing 5 Set the sewing machine to needle up stopping and then operate the sewing machine and let it stop Check that the reference line d on the machine pulley 5 is within the range of the mark e on the motor cover 3 at this time S 7200B 7 4 Rotary hook RP 7 REPLACING PARTS If replacing the standard rotary hook with a rotary hook RP lubrication free rotary hook on sub class 40 or 43 machines use the following parts S52936 001 ROTARY HOOK W BOX S35786 001 SCREW CAP NOTE When using the rotary hook RP lubrication free rotary hook set the sewing speed to 4 000 rpm or less S 7200B lt Replacing gt 1 Remove the needle and the presser foot 2 Remove the needle plate 1 and the feed dog 2 3 4 Replace the screw 3 Remove the rotary hook Tighten the screw 3 securely Install the rotary hook RP 4 and the needle After installing the rotary hook RP adjust the needle and rotary hook timing Refer to page 31 Install the feed dog 2 Install
65. ing to these error codes If an error code that is not listed above appears or if carrying out the specified remedy does not solve the problem contact the place of purchase 73 S 7200B 14 SEGMENT DISPLAY DEFINITION TABLE 14 SEGMENT DISPLAY DEFINITION TABLE LCD display character list 1203B S 7200B 74 MEMO 75 S 7200B MEMO S 7200B 76 SERVICE MANUAL BROTHER INDUSTRIES LTD http www brother com 15 1 Naeshiro cho Mizuho ku Nagoya 467 8561 Japan Phone 81 52 824 2177 Printed in Japan S 7200B 16100914B 2007 03 B 1
66. ire or electric shocks could occur If using a work table which has casters the casters should be secured in such a way so that they cannot move Use both hands to hold the machine head when tilting it back or returning it to its original position If only one hand is used the weight of the machine head may cause your hand to slip and your hand may get caught Be sure to wear protective goggles and gloves when handling the lubricating oil and grease so that they do not get into your eyes or onto your skin otherwise inflammation can result Furthermore do not drink the oil or eat the grease under any circumstances as they can cause vomiting and diarrhea Keep the oil out of the reach of children CAUTION Sewing This sewing machine should only be used by operators who have received the necessary training in safe use beforehand The sewing machine should not be used for any applications other than sewing Be sure to wear protective goggles when using the machine If goggles are not worn there is the danger that if a needle breaks parts of the broken needle may enter your eyes and injury may result Turn off the power switch at the following times The machine may operate if the treadle is depressed by mistake which could result in injury When threading the needle When replacing the bobbin and needle When not using the machine and when leaving the machine unattended If using a work table whi
67. itions and check that they operate correctly before using the machine Any problems in machine operation which result from unauthorized modifications to the machine will not be covered by the warranty Maintenance and inspection 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 fe 5 BSERAMI AdVC AU SET S SS Cem BRED SOT HEPES thus MEHR TT EE FRERE DANGER AGEFAHR DANGER PELIGRO Hazardous voltage Hochspannung Un voltage non adapte Un voltaje inadecuado oz will cause injury verletzungsgefahr provoque des blessures puede provocar las PIRSA i SE Turn off main switch Rae Eteindre l interrupteur et heridas Apagar el MUER and wait 5minutes warten sie 5 minuten attendre 5 minutes avant interruptor principal y HT le zem before opening this bevor sie diese d ouvrir le capot esperar 5 minutos antes ape dt cover abdeckung ffnen de abrir esta cubierta METER A BRE FOB TALIS EE LH CAUTION Moving parts may cause injury Operate with safety devices Turn off main switch before threading changing bobbin and needle cleaning etc 3 Be sure to connect the ground If the ground connection is not Secure you run a high risk o
68. ly 3 touches the hollow c of the thread trimmer cam 2 and so that the clearance between the edge of the thread trimmer cam 2 and the roller shaft 4 is 0 6 to 0 8 mm and then tighten the set screws 5 Fig 3 Check that the clearance between the edge of the thread trimmer cam 2 and the roller shaft 4 is 0 5 mm when the roller shaft 4 returns to the right Fig B Direction of cam rotation A Tighten the two set screws 5 to approximately 4 N m Movable knife and fixed knife position adjustment gt 1 Turn the machine pulley and then push the plunger 1 of the thread trimming solenoid with your finger 2 In this condition turn the machine pulley until the roller shaft 4 of the thread trimmer cam lever assembly 3 is sitting on top of the thread trimmer cam 2 then move the thread trimmer lever 7 to adjust its position so that the tip of the fixed knife 5 and the blade of the movable knife 6 are meshed by 1 mm and then tighten the screw 8 Adjust so that the meshing amount is 1 mm at this time by using the position where the mating marks on the thread trimmer holder and the bushing are aligned as a guide Tighten the screw 8 so that there is no play in the forked shaft 9 The lower thread finger 10 must be underneath the movable knife 6 3 Install the feed dog needle plate and presser foot Mating mark S 7200B 32 6 ADJUSTMENTS 6 12
69. ming 0573M 2 Lower thread is not tight s the lower thread tension too weak or is the upper thread tension too strong 7172772272202 72 Adjust the lower thread tension or upper thread tension Instruction SS SQ SS SS manual 0574M 3 Loops appear in seam sthe thread path not smooth enough Use a file with a fine grain or sandpaper to polish smooth the thread path U i sthe bobbin not turning smoothly Pull out the lower thread to check that there is no slackness in the thread tension or replace the bobbin or bobbin case 0977M 4 Skipped stitches occur e Is the needle tip bent Is the needle tip blunt while sewing If the needle tip is bent or blunt replace the needle sthe needle properly installed If it is incorrect install the needle correctly Instruction Ee 7 15 the machine properly threaded manual If it is incorrect thread the thread correctly Instruction sthe presser foot pressure too weak manual Adjust the presser foot pressure Instruction sthe needle too thin manual Replace the needle with a needle that is one rank thicker sthe presser foot too high Adjust the height of the presser foot 27 sthe thread take up spring too weak Adjust the tension of the thread take up spring 26 sthe needle and rotary hook timing correct Adjust the height of the needle bar 30 Adjust the clearance between the needle and the tip of the rotary hook 31 0470M S
70. move the oil cap 3 Loosen the screw 4 and then move the needle bar 1 up or down to adjust its position Securely tighten the screw 4 Replace the oil cap 3 The standard position for point of the needle is as described below when the feed dog 1 is lowered from its highest position until it is aligned with the top of the needle plate 2 At this time the mark on the lower shaft will be aligned with the center of the scale 4 O mark on the vertical cam 3 lt I S nns The top of the feed dog 1 and the top of the needle plate 2 should be aligned and the point of the needle should be approximately 1 mm below the needle plate 2 lt 5 gt The top of the feed dog 1 and the top of the needle plate 2 should be aligned and there should be a clearance of approximately 3 mm between the point of the needle and the needle plate 2 Tilt back the machine head Loosen the two set screws 5 and then turn the vertical cam 3 sligtly to adjust the timing Use the mark on the lower shaft and the alignment position on the scale 4 of the vertical cam 3 as a guide To set to the standard position align the mark on the lower shaft with the center of the scale 4 O mark on the vertical cam 3 A in the illustration To prevent material slippage from occurring retard the needle timing Turn the vertical cam 3 in the direction of B
71. n the machine pulley to move the feed dog 1 to its highest position above the needle plate 2 Tilt back the machine head 3 4 Turn the shaft 2 in the direction of the arrow within a Loosen the two set screws 4 range of 90 with respect to the standard position Fig C n order to prevent puckering lower the front of the feed dog 1 In order to prevent the material from slipping raise the front of the feed dog 1 Securely tighten the two set screws 4 If you would like to tilt the feed dog 1 further turn the feed lifting rock bracket stud 5 while carrying out the above adjustment Fig D Refer to 6 6 Adjusting the feed dog height on the previous page for details of this operation The height of the feed dog 1 will change after the angle has been adjusted so it will be necessary to re adjust the height of the feed dog 1 6 ADJUSTMENTS 6 8 Adjusting the needle bar height DBx1 DAx1 ns Approx 3mm Needle timing is advanced Standard Needle timing is retarded S 7200B 2288M Reference line a which is the second line from the bottom of the needle bar 1 fourth line from the bottom when using a DA x 1 needle should be aligned with the lower edge of the needle bar bush D 2 as shown in the illustration when the needle bar 1 is at its lowest position Turn the machine pulley to set the needle bar 1 to its lowest position Re
72. nge Setting details Function for preventing needle bar operation when treadle is accidentally depressed forward when it is returned to neutral after being depressed 56 0 0 1 backward 0 Used 1 Not used Operation when treadle is depressed forward to 1st step when presser foot is 57 0 0 1 raised 17 0 Presser foot is lowered 1 Presser foot is not lowered Synchronization function when quick reverse mechanism has been operated using the actuator switch 58 2 0 2 0 Disabled 1 Only quick reverse mechanism synchronization enabled 2 Synchronization of main shaft at automatic deceleration speed set by No 50 0 355 59 0 degrees degrees Do not change this setting 150 0 355 60 degrees degrees Do not change this setting NOTE 17 Setting is only enabled when DIP switch 2 is set to ON Needle breakage prevention function specifications Use Function No 50 to set the automatic deceleration speed when the quick reverse mechanism has been operated using the actuator switch Setting possible in units of 100 rpm Use Function No 58 to set the synchronization function when the quick reverse mechanism has been operated using the actuator switch Example Default settings At low speed 0 At high speed 150 Needle up stop point is home point 0 Operating angle range Direction of main shaft rotation 10 Operating angle At low speed No 5
73. nuous backtacking operation 27 0 0 1 0 Stitch number A B C D 1 Stitch number A B x D times Feed direction when stopping immediately after start backtacking 0 Quick reverse solenoid turns off and stops in anm normal feed direction Allg 28 0 1 After stopping quick reverse solenoid turns OFF See NOTE 7 T 2246M NOTE 3 The setting to the left of the symbol is when the correction stitch icon is off and the setting to the right is when the correction stitch icon is on Turn the power off and back on again when this setting is changed The setting will be enabled after the power turns back on NOTE 4 NOTE 5 NOTE 7 Stitch number setting is enabled when Function No 118 is set from 1 to 3 Stitch number setting is enabled when Function No 118 is set to 2 or 3 NOTE 6 Stitch number setting is enabled when Function No 118 is set to 3 Operates when treadle is lightly pressed when Function No 31 is set to 0 S 7200B Function No 29 40 3 FUNCTION SETTINGS OPERATION PANEL No Initial value Setting range Setting details Actuator function while sewing machine is stopped 0 None 29 0 0 3 1 Solenoid type presser foot lifter is raised alternating 2 Solenoid type presser foot lifter is raised momentary 3 Quick reverse mechanism operates 30 150 0 500 Delay time until motor starts operating when
74. o that the reference line d is aligned with the mark e on the motor cover 3 as shown in the illustration and then secure the machine pulley 5 by tightening the three screws 9 Tighten the three screws 9 so that they are in the middle of the screw holes The reference line d and the mark e may move out of alignment when tightening the screws but this is not a problem Adjust the positions of the machine pulley 5 and timing pulley D 6 as follows 1 Tilt back the machine head 2 Turn timing pulley D 6 forward to lower the feed dog 15 until it is at the same height as the needle plate 16 3 Turn the machine pulley 5 forward to adjust so that the tip of the needle is at the following position lt 05 nm So that the point of the needle is approximately 1 mm below the needle plate 16 I 5 So that there is a clearance of approximately 3 mm between the point of the needle and the top of the needle plate 16 Place the timing belt 4 onto timing pulley D 6 Check that the timing belt 4 is placed on the back position of the tension pulley 17 8 Turn the machine pulley 5 forward until the timing belt 4 is set securely 9 Return the machine head to its original position 10 Install the side plate 1 After the timing belt has been installed be sure to then carry out the steps in Timing belt installation check refer to the next page lt Motor inst
75. ount and this makes the sewing machine operate When the treadle is returned to the neutral position When the treadle 2 is returned to the neutral position when the operator s foot is removed from the treadle a signal indicating that the treadle is at the neutral position is transmitted by the treadle unit 3 to the control box 4 and the electrical brake is then applied to slow the DD motor 5 The encoder circuit board that is installed to the DD motor 5 sends a signal to the control box 4 so that the electrical brake is applied in order to stop the sewing machine at the stopping position needle up or needle down set by the pulley 6 that is attached to the DD motor 5 When the treadle is depressed backward When the treadle 2 is depressed backward a signal indicating thread trimmer operation is transmitted by the treadle unit 3 to the control box 4 and the DD motor 5 slows down to the thread trimming speed inching speed The encoder circuit board that is installed to the DD motor 5 sends a signal to the control box 4 so that the electrical brake is applied in order to stop the sewing machine at the needle up stopping position set by the pulley 6 that is attached to the DD motor 5 The thread trimming operation is carried out immediately before the sewing machine stops at the needle up stop position S 7200B 48 10 CONTROL BOX AND MOTOR 10 CONTROL BOX AND MOTOR 10 1 Removing and
76. ox Touching areas where high voltages are present can result in severe injury Control box 1 Disconnect the sewing machine connector 14 1 from the control circuit board 2 Measure the resistance of the sewing machine connector 1 using an ohmmeter in the x 1 range If the values are as shown in the table below the connector is normal Between 3 10 Thread trimming solenoid Approx 7 6Q Between 4 11 Thread wiper solenoid Approx 5 70 Thread wiper solenoid Between 5 12 Quick reverse solenoid Approx 4 80 Between 6 13 When actuator is pressed 0Q Quick reverse solenoid When actuator is released o Q Actuator switch Between 7 14 When machine head is upright switch ON 00 Safety switch When machine head is tilted back switch OFF 1 Disconnect the solenoid type presser lifter connector 6P 2 from the control circuit board 2 Measure the resistance of the solenoid type presser lifter connector 2 using an ohmmeter in the x 1 range Knee switch If the values are as shown in the table below the connector is normal Between 3 6 Presser lifter solenoid Approx 9 6 Q Presser lifter solenoid Between 4 5 When knee switch is pressed 0 O 2331M When knee switch is released o Q 55 S 7200B 11 TREADLE UNIT ASSEMBLY 11 TREADLE UNIT ASSEMBLY 11 1 Types The two types of treadle unit that are
77. peration after treadle is returned to neutral and needle stops in the up position 0 Single stitch is sewn and then the thread is trimmed lock stitchers 1 Thread wiping operation when needle is stopped in up position chain stitchers 44 Operation when Standing operation variable speed pedal is on 0 Sewing speed corresponds to treadle depression amount 1 Sewing speed corresponds to sewing speed control key setting constant speed 45 80 ms Delay time from standing pedal turning on until motor starts operating 46 Operation during standing operation when AUTO function is on 0 Sewing pauses when presser foot lifter pedal is on operation pause 1 Above function is not used 47 Operation during standing operation when AUTO function is on 0 Operation stops when high speed pedal turns back on and restarts when off 1 Above function is not used 48 Thread trimming pedal function after thread trimming during standing operation 0 Presser foot can be raised and lowered 1 Above operation not used only possible using presser foot lifter pedal 49 0 0 1 Alternate standing operation pedal and treadle operation See NOTE 15 0 Treadle operation is disabled after standing operation pedal is used 1 Treadle operation can also be used after standing operation pedal is used alternate operation is possible 300 5000 Automatic deceleration speed when quick re
78. r the top row of the stitch number display NI 2 Press the end backtack key 1 to set the value in the r bd bottom row of the stitch number display to 1 i pco 0 d 0707B 4 1 Then press and hold the end backtack key 1 for 5 als seconds or more The display will turn off amp Display turns off 2 After this will flash and the initialization will be NAT Z complete 99 T e Rel io SN PRESS 5 3150M 5 Set DIP switch 3 to ON The settings will be locked S 7200B 22 5 ADJUSTING THE ROTARY HOOK LUBRICATION AMOUNT 00 030 specifications 5 ADJUSTING THE ROTARY HOOK LUBRICATION AMOUNT O 030 specifications AXCAUTION A Be careful not to touch your fingers or the lubrication amount check sheet against moving parts such as the rotary hook or the feed mechanism when checking the amount of oil supplied to the rotary hook otherwise injury may result 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 NOTE If the sewing machine is sub class 5 it is a fully dry type machine and so adjustment of the rotary hook lubrication amount is not necessary Checking the lubrication amount 1 Remove the thread from all points from the thread take up Approx 25mm to the needle 2 Use the lifting lever to lift the press
79. ration Motor Ty ED D Cr rs tif LRL rp z E Needle up signal amp B 4 pe bashes c Stitch number A i 2254M Stitch number D When set to chain stitch thread trimming thread wiping gt After thread trimming the thread wiper signal is output Use Function No 109 and No 110 to set the timer operation Motor m Needle up stop 2255M lt When set to pneumatic wiper gt After thread trimming output is synchronized with the automatic presser foot lifter Use Function No 111 and No 112 to set the timer operation When the presser foot is lowered option output turns off Needle up stop Motor 1 gt 2256M No 111 No 112 S 7200B 14 3 FUNCTION SETTINGS OPERATION PANEL Function No 73 79 No Initial value Setting range Setting details 73 MIU F NOTE 23 90 ms 50 150 ms Thread trimming on time 74 15 degrees 345 345 Quick reverse solenoid on timing during start backtacking continuous degrees backtacking 75 30 degrees 345 345 Quick reverse solenoid off timing during start backtacking continuous degrees backtacking 76 30 degrees 15015 Quick reverse solenoid off timing during end backtacking degrees 77 345 345 e NOTE 24 15 degrees degrees Quick reverse solenoid on timing during end backtacking 78 180 0 350 men m NOTE 25 degrees degr
80. rd eo 2 position press the thread trimming key 2 ST will appear the main display 3 De S 7200B 58 11 TREADLE UNIT ASSEMBLY 3 Memorizing the neutral position With your foot released from the treadle press the thread trimming key 2 Pdrr x xxx will appear in the main display 3 With the treadle depressed backward to the maximum backward position press the thread trimming key 2 Pd x xxx will appear in the main display 3 1 Press the ENTER key 4 The buzzer will sound and the main display 3 will switch off NOTE If you do not press the ENTER key 4 the settings will not be memorized 2 Turn off the power switch 1 3 Set DIP switch No 4 to OFF 59 S 7200B 11 TREADLE UNIT ASSEMBLY B For the control box panel 1 Signal setting entry 1 Turn off the power switch 1 2 Set DIP switch No 4 to ON 3193M 3 While pressing the end backtack key 2 turn on the power switch 1 PF will appear in the stitch number display 3 With the treadle depressed forward to the maximum forward position press the start backtack key 4 will appear in the stitch number display 3 S 7200B 60 11 TREADLE UNIT ASSEMBLY 3 Memorizing the neutral position With your foot released from the treadle press the start ba
81. ry hook Lubricating oil 30 40 33 430 45 Rotary hook High speed spindle Needle bar High speed spindle Special Brother grease Special Brother grease 1 S 7200B 2 NOTES ON HANDLING 2 NOTES ON HANDLING About the machine set up location Do not set up this sewing machine near other equipment such as televisions radios or cordless telephones otherwise such equipment may be affected by electronic interference from the sewing machine The sewing machine should be plugged directly into an AC wall outlet Operation problems may result if extension cords are used 2086M Carrying the machine The machine should be carried by the arm by two people as shown in the illustration Hold the motor cover A by hand also so that the pulley does not rotate 2087M 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 2088M Returning the machine head to the upright position 1 Clear away any tools etc which may be near the table holes 2 While holding the face plate with your left hand gently return the machine head to the upright position with your right hand S 7200B 2 3 FUNCTION SETTINGS OPERATION PANEL 3 FUNCTION SETTINGS OPERATION PANEL 3 1 Maximum sewing speed and start backtack sewing speed setting methods 1 I
82. se Page Err 5 s the machine connector inside the control box disconnected Safety switch Insert the connector securely 52 operated Is the machine head tilted back Return the machine head to its normal position Check the operation of the safety switch 25 Err 6 e Was the power turned on while the treadle was still depressed Return the treadle to the neutral position and then turn on the power switch Voltage drop Is the power supply voltage too low Check the power supply voltage 54 Err 7 This is displayed when there is a problem communicating with the operation panel CPU Panel sthe operation panel connector inside the control box disconnected i o Insert the connector securely 52 Problem with operation panel or control box Replace the operation panel or control box 49 Err 8 This appears on the display when the sewing machine has been operating continuously for 3 minutes or more Over time Turn the power switch off and then back on again and then operate the sewing machine normally Err 9 This is displayed when the motor becomes abnormally hot and the temperature protection has activated Motor After the temperature has dropped turn the power switch back on and operate overheating the sewing machine as normal abnormally Problem with motor Replace the motor 39 Err 10 This is displayed when there is overcurrent in any of the solenoids thread trimming thread wiping quick reverse or pr
83. sion force is set automatically D When depressed forward and depressed When depressed forward and depressed Depression backward backward force The depression force hardly changes at all from the The depression force suddenly changes at a point start of depression until full depression between the start of depression and full depression E lt When depressed forward gt When depressed forward and depressed Depression The sewing machine starts backward signal lt When depressed backward gt An automatic presser lifter signal is output at the The sewing machine starts NOTE 1 point before the depression force suddenly changes and the sewing machine starts at the point after the depression force suddenly changes NOTE 1 The presser foot lifter control signal is output while the treadle is depressed backward However if DIP switch 1 is set to OFF the presser foot lifter control signal is not output when the treadle is depressed backward after the knee switch has been used to raise the presser foot Furthermore if Function No 41 is set to 1 the presser foot lifter control signal is not output when the treadle is depressed backward S 7200B 56 11 TREADLE UNIT ASSEMBLY gt OS A UDLSGaIEG EAE o07BL L C VL LLLZ LLLLLLLL GHLIuu AM AADAEAZI 11 2 Standard setting values Specifications Treadle unit G Treadle unit H Does not control automatic
84. splay is to notify you that it is time to apply grease flashes in the panel Apply grease 44 46 display when the power Switch is turned on S 7200B 68 13 TROUBLESHOOTING 13 2 Error code displays If an error code appears on the operation panel display 1 Make a note of the error code and then turn off the power 2 After the operation panel display has turned off eliminate the cause of the error and then turn the power back on 2198M Error code Possible cause Page Err 1 Does the power supply voltage match the control box voltage specifications Overvoltage Check the voltage p ur EN 50 Voltage rating label sthe power supply voltage abnormally high t Check 50 Problem with control box Replace the control box 49 2199M Err 2 s the electrical equipment connector inside the control box disconnected T Overcurrent Insert the connector securely 52 3155M Err 3 5 the encoder connector inside the control box disconnected Encoder error Insert the connector securely 52 Err 4 s the motor connector disconnected from the control box Motor lock Insert the connector securely 49 Hasthe machine locked up Turn off the power and then turn the machine pulley by hand and check that it turns easily 2202M 69 S 7200B 13 TROUBLESHOOTING Error code Possible cau
85. the needle plate 1 Adjust the installation position of the feed dog 2 so that it is in the middle of the needle plate 1 groove Install the presser foot Adjusting the adjusting screw Tighten the adjusting screw 5 as far as it will go and then turn it back the other way about three full turns At this time the head A of the adjusting screw 5 should be almost flush with the edge B of the bed NOTE f the sewing machine is used while the adjusting screw 5 is in the fully tightened position it will cause oil to leak out through the gap between the rotary hook shaft 6 and the bracket 7 42 7 REPLACING PARTS 7 5 Feed bar shaft Lifting feed shaft When changing over these parts apply grease as described below and then install the parts to the sewing machine Use Brother specified grease SA7300 001 Apply grease to the holes of each part as shown in the arrow until a small amount of grease overflows Tighten the screws to force the grease in Wipe away any excess grease from around the screws Apply grease to the meshing areas 89 areas of each part Install each part to the sewing machine Feed bar shaft unit 2319M Grease Be particularly sure to apply grease to the groove 43 S 7200B 8 APPLYING GREASE 3 150 specifications 8 APPLYING GREASE 3 5 specifications 8 1 When using the operation panel If GrEASEUP flashes on th
86. the upper thread tension as weak as possible Instruction Is the lower thread tension too strong manual Make the lower thread tension as weak as possible Instruction Is the needle tip blunt manual Replace the needle if it is blunt Is the needle too thick Replace with as thin a needle as possible oan Are the thread take up spring tensions too strong Make the thread take up spring tension as weak as possible 26 E Is the thread take up spring operating range too large Lower the position of the thread take up spring to as low a position as possible 26 Is the presser foot pressure too strong Adjust the presser foot pressure Instruction Is the sewing speed too fast manual Use the sewing speed control keys to gradually reduce the Instruction sewing speed manual Is the angle of the feed dog correct Tilt the front of the feed dog down slightly 29 0978M Material slippage Is the presser foot pressure too strong Adjust the presser foot pressure Instruction manual 0750M S 7200B 13 TROUBLESHOOTING Problem Possible cause Page 9 Lower thread is tangled at Is the bobbin spinning direction correct when the lower thread is the sewing start being pulled Spinning of bobbin during Set the bobbin so that it turns in the opposite direction to the thread trimming rotary hook Instruction Lower IS there too much thread manual thread wound onto the bobbin 80 eel M AR The bobbin winding cca
87. tip of the rotary hook 3 with the center of the needle 4 The distance between the tip of the rotary hook 3 and the needle 4 should be approximately 0 0 05 mm 3 Securely tighten the three set screws 5 DB x 1 Seen from above Checking the clearance between the rotary hook and bobbin case holder position bracket Check that the clearance between the rotary hook 6 and the bobbin case holder position bracket 7 is enough to allow the thread being used to pass through smoothly The clearance should be 0 4 0 7 mm for S 03 models and 0 6 1 1 mm for h models lt 05 3 gt 0 4 0 7mm lt 5 gt 0 6 1 1mm 31 S 7200B 6 ADJUSTMENTS 6 11 Adjusting the thread trimming timing Remove the presser foot needle plate and feed dog Lowest position of needle bar Raised 5 mm lt Thread trimming cam position adjustment gt 1 Turn the machine pulley to raise the needle bar 5 mm from its lowest position reference line a position so E that reference line b is aligned with the bottom edge of 7 T Reference the needle bar bush line a line b DAX1 DBX1 DAX1 DBX1 DPX5 DPX5 2 At the above position push the plunger 1 of the thread trimming solenoid with your finger in the direction of the 4 N arrow OM Adjust the position of the thread trimmer cam 2 at this v C time so that the roller shaft 4 of the thread trimmer cam lever assemb
88. to prevent the accidental changing of settings brother nm Refer to 3 5 Function List P 17 for the available settings for Function No 101 lt Releasing the lock gt Press down the LOCK key 1 for 2 seconds or more The icon 2 will switch off and the lock will be released lt Setting the lock gt When the icon 2 is switched off press down the LOCK key 1 for 2 seconds or more The icon 2 will illuminate and the key operation that has been set using Function No 101 will be disabled Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet before opening the face plate of the control box Touching areas where high voltages are present can result in severe injury Presser foot position when the treadle is ON Presser foot is lowered Export specification 1 returned to the neutral position after thread OFF Presser foot is kept raised Japanese specification only trimming See NOTE 1 2 Presser foot lowering when the treadle is ON Enabled depressed to step 1 See NOTE 2 OFF Disabled ON The lock will not be released even if the LOCK key is pressed OFF Enabling or disabling of the key operation that has been set using Function No 101 can be selected using the LOCK key 4 Always set to off See NOTE 3 3 Disabling the LOCK key NOTE 1 Once the knee lifter switch is
89. to the stitch number display orange 2242M NOTE will not be changed If you depress the treadle before pressing the ENTER key the main display will return to orange and the setting value If you change the function number after changing the setting value but before pressing the ENTER key the setting value will not be changed You need to press the ENTER key for each function number for the setting to be accepted 5 S 7200B 3 5 Function List Function No 0 15 3 FUNCTION SETTINGS OPERATION PANEL No Initial value Setting range Setting details 0 degrees 10 20 degrees Needle up stop position setting 10 lt lt 0 20 Becomes higher Becomes lower 2243M 0 degrees 10 10 degrees Needle down stop position setting 10 4 0 10 Becomes lower Becomes higher 2244M 0 1 Depressing forward when depressed backward thread trimming 0 Disabled depressing forward is enabled after returning to neutral position 1 Enabled Power supply voltage drop check reset detection function 0 Not used 1 Used Err 6 is displayed when a voltage drop occurs Buzzer electronic sound for panel operation 0 Used 1 Not used Do not change this setting Needle penetration up operation 0 Used 1 Not used Backtack sewing speed 0 Limited by sewing speed control key 1 Not limited by sewing speed control key
90. used to lower the presser foot the treadle can not be used to raise the presser foot while the machine is stopped at this time only the knee lifter is able to raise and lower the presser foot NOTE 2 The treadle unit should also be adjusted when using this function Refer to page 56 NOTE 3 When set to ON treadle operation is disabled so it should always be left at OFF If set to ON the messages di SH H green and 11 1 orange will flash alternately in the display S 7200B 4 3 FUNCTION SETTINGS OPERATION PANEL 3 4 Setting functions 2 1 If the LOCK key icon 1 is on release the lock before carrying out the following operations 2238M If the MAX key icon 2 is on press the MAX key to return the main display to stitch number display orange 1 Function no Setting value The main display will change to green and function setting mode will be enabled 2239M 2 Selecting the function number Example Function no 14 Refer to the Function List to select the number for the function that you would like to change the setting for 2240M Example Setting value 1 Refer to the Function List to change the setting to a value within the setting range 2241M Press for 2 seconds or more The buzzer will sound for approximately 1 second and then the setting will be accepted The main display will return
91. verse mechanism has been 50 4000 rpm operated using the actuator switch Correction stitch sewing using actuator switch after thread trimming 51 0 0 1 0 Not possible switch operation disabled 1 Possible 52 2 needles 1599 Number of slow start stitches needles Count units for stitch counter display 10 0 100 53 needles needles 0 No counting operation 1 100 Display counts down by number of stitches set Operation when stitch counter warning occurs icon is illuminated 0 Starting using treadle is enabled as normal 1 Starting using treadle is disabled thread trimming by depressing treadle 54 1 0 2 backward is possible 2 Starting using treadle is completely disabled once treadle is returned to neutral and operation stops Operation after treadle is depressed backward or knee switch is operated 55 0 0 1 when presser foot is raised NOTE 16 0 When treadle is returned to neutral presser foot is raised 1 When treadle is returned to neutral presser foot is lowered NOTE 15 Presser foot lifter pedal operation is not included In the case of simultaneous operation the standing operation pedal takes priority NOTE 16 Setting is only enabled when DIP switch 1 is set to ON Settings indicated with are enabled when the power is turned off and then back on S 7200B 3 FUNCTION SETTINGS OPERATION PANEL Function No 56 60 No Initial value Setting ra

S-7200B - vnz rutha

Contents

Download Pdf Manuals

Related Search

Related Contents