Brother International T-8752C Instruction Manual - English
Brother International T-8752C Manual
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- Brother International T-8752C | Instruction Manual - English - Page 1
T-8421C, 8422C T-8452C, 8722C T-8752C INSTRUCTION MANUAL Please read this manual before using the machine. Please keep this manual within easy reach for quick reference. TWIN NEEDLE DIRECT DRIVE LOCK STITCHER - Brother International T-8752C | Instruction Manual - English - Page 2
Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions below and the explanations given in the instruction manual. With industrial sewing machines, it is normal to carry out work while positioned directly in front of moving parts - Brother International T-8752C | Instruction Manual - English - Page 3
[1] Safety indications and their meanings This instruction manual and the indications and symbols that are used on the machine itself are provided in order to ensure safe be done. (For example, the symbol at left means "you must make the ground connection".) T-8421C, 8422C, 8452C, 8722C, 8752C i - Brother International T-8752C | Instruction Manual - English - Page 4
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 oil out of the reach of children. ii T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 5
Brother dealer or a qualified technician. If the machine develops a problem, contact your nearest Brother as specified by Brother. Maintenance and inspection Ask your Brother dealer or replacement parts as specified by Brother. If any safety devices have the machine. Any problems in machine operation - Brother International T-8752C | Instruction Manual - English - Page 6
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 run a high risk of PE receiving a serious electric shock, and problems with correct operation may also occur. 7 Direction of operation * - Brother International T-8752C | Instruction Manual - English - Page 7
Oil pan Control box Transformer box (100V/400V system only) 2166B Oil tank 2506B T-8421C, 8422C, 8452C, 8722C, 8752C v - Brother International T-8752C | Instruction Manual - English - Page 8
Using the thread wiper (models with thread trimmer only 25 4-9. Corner sewing method (T-8452C, 8752C) ..... 26 4-9-1. To stop the needle bars (right and left 26 4-9-2. Number of stitches: quick-reference guide 26 5. USING THE G50 OPERATION PANEL (BASIC OPERATIONS 27 5-1. Names and functions 27 - Brother International T-8752C | Instruction Manual - English - Page 9
69 13-8. Installing the feed dog 71 13-9. Feed dog position 72 13-10. Feed dog height 73 13-11. Feed dog angle 74 14. TROUBLESHOOTING 75 14-1. Sewing 75 14-2. Error code displays 80 15. 7-SEGMENT DISPLAY 84 T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 10
lubrication 3 Semi dry F Use F Foundation 3 Light-weight and medium-weight materials 5 Heavy-weight materials 7 Heavy-weight materials (For extra thick thread) 1 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 11
circuit T-8722C, 8752C Max. sewing speed Start backtacking and continuous backtacking speed End backtacking speed Max. stitch length Presser foot Lifting lever height Knee lifter Feed dog height Needle (DP×5) Motor Control circuit -403 4,000 sti/min -433 -405, -407 3,000 sti/min - Brother International T-8752C | Instruction Manual - English - Page 12
Stitch length dial (11) Oil gauge window (13) Operation panel (15) Stop lever (T-8452C, 8752C ) Safety devices (16) Thread take-up cover 2168B (2) Thread wiper (T-8422C, 8452C, 8722C, 8752C) (4) Quick reverse (Actuator switch) (6) Control box (8) Power switch (10) Reverse lever (12) Machine pulley - Brother International T-8752C | Instruction Manual - English - Page 13
3. INSTALLATION 3. INSTALLATION CAUTION Machine installation should only be carried out by a qualified technician. Contact your Brother dealer or a qualified electrician for any electrical work that may need to be done. The sewing machine weighs approximately 50 kg (110 lb). The installation - Brother International T-8752C | Instruction Manual - English - Page 14
3-2. Installation 2170B 1. Control box (1) Control box (2) Bolts [3 pcs] (3) Nuts [3 pcs] (4) Spring washers [3 pcs] (5) Washers [3 pcs] 2. Connecting rod (6) Connecting rod (7) Nut 4127M 5 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 15
3. INSTALLATION 3. Oil pan (1) Head cushions (left) [2 pcs] (2) Head cushions (right) [2 pcs] (3) Oil pan (4) Oiler 2874M 4. Rubber cushions (1) Rubber cushions [2 pcs] (2) Nails [4 pcs] 5. Knee lifter complying bar (3) Knee lifter complying bar 2875M T-8421C, 8422C, 8452C, 8722C, 8752C 6 - Brother International T-8752C | Instruction Manual - English - Page 16
that the two rubber cushions (2) and the washer (3) are securely clamped and so that the cotton stand (1) does not move. 2878M 7 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 17
plate when the knee liter plate (1) is fully pressed. 9. After adjustment is completed, securely tighten the nut (9). Within 13 mm 2882M T-8421C, 8422C, 8452C, 8722C, 8752C 8 - Brother International T-8752C | Instruction Manual - English - Page 18
3. INSTALLATION 3-3. Lubrication CAUTION Do not connect the power cord until lubrication has been completed, otherwise 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 - Brother International T-8752C | Instruction Manual - English - Page 19
Apply 1 - 2 drops of oil to the places indicated by the arrows. * Do not apply oil for semi dry types. 3. INSTALLATION Rotary hook race (left and right) 2200B 2174B T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 20
high voltages are present can result in severe injury. CAUTION Contact your Brother dealer or a qualified electrician for any electrical work that may need run a high risk of receiving a serious electric shock, and problems with correct operation may also occur. 3-4-1. Opening the control box - Brother International T-8752C | Instruction Manual - English - Page 21
to the cord holder (2) using the repeat cable tie (1), otherwise vibration from the sewing machine may cause the cords to become disconnected, which can cause problems with the operation of the control box. 4141M T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 22
: Take care when tapping in the staples (3) to make sure that they do not pierce the cords. Do not use extension cords, otherwise machine operation problems may result. Leg Control box Green and yellow wire (ground wire) 4144M 13 T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 23
: Take care when tapping in the staples (5) to make sure that they do not pierce the cords. Do not use extension cords, otherwise machine operation problems may result. 2178B T-8421C, 8422C, 8452C, 8722C, 8752C 14 - Brother International T-8752C | Instruction Manual - English - Page 24
: Take care when tapping in the staples (7) to make sure that they do not pierce the cords. Do not use extension cords, otherwise machine operation problems may result. Green and yellow wire (ground wire) 2380B 15 T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 25
treadle (3) is depressed while the machine head is tilted back, the safety switch is probably faulty. Contact the place of purchase. T-8421C, 8422C, 8452C, 8722C, 8752C 16 - Brother International T-8752C | Instruction Manual - English - Page 26
by approximately 27 %. At this time, the treadle forward and backward depression sensitivity will change, so readjust if necessary. 4260M 17 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 27
the needle (2) straight in as far as it will go so that the long groove is facing inward, and then securely tighten the screws (1). Long groove 2461B Long groove 2462B T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 28
and left. 2. Lift up the latch (2) of the rotary hook, and then remove the bobbin case (3). 3. Remove the bobbin. 2464B 19 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 29
bobbin. NOTE: The amount of thread wound onto the bobbin should be a maximum of 80 % of the bobbin capacity. 2123M 2124M T-8421C, 8422C, 8452C, 8722C, 8752C 20 - Brother International T-8752C | Instruction Manual - English - Page 30
. The anti-spin spring (6) prevents the bobbin from racing at times such as during thread trimming. Use bobbins (1) made of light alloy as specified by BROTHER. 2466B 21 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 31
anti-spin spring (10) prevents the bobbin from racing at times such as during thread trimming. Use bobbins (1) made of light alloy as specified by BROTHER. 2468B T-8421C, 8422C, 8452C, 8722C, 8752C 22 - Brother International T-8752C | Instruction Manual - English - Page 32
easier and it will prevent the thread from coming out at the sewing start. ・ Thread the left-side thread first. 23 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 33
the thread through. Center Pass the thread through. (Refer to p.54 the inside of the tab (3). Specifications indicated by the * mark include arm thread guide D (4) and felt (5). When using polyester thread, install these components and thread the - Brother International T-8752C | Instruction Manual - English - Page 34
4. PREPARATION BEFORE SEWING 4-6. Adjusting the stitch length Locked Unlocked 1. Unlock the stitch length dial (2) by turning the dial lock lever (1) to the right until a click is heard. 2. Turn the stitch length dial (2) clockwise or counterclockwise so that the desired stitch length is at the - Brother International T-8752C | Instruction Manual - English - Page 35
BEFORE SEWING 4-9. Corner sewing method (T-8452C, 8752C) NOTE: If using this machine in place (1) will then return to its original position automatically. Push 3130M 4-9-2. Number of stitches: quick-reference guide Sewing angle 40° No. of stitches 6 3131M Sewing No. of angle 30° 40° 50° 60 - Brother International T-8752C | Instruction Manual - English - Page 36
, the number of stitches (0-1999) in the E stitch number display is sewn, and then the sewing machine stops automatically. 4164M 27 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 37
the indicator of the thread wiper key (18) is illuminated, the indicator of the thread wiper key (18) will switch off. T-8421C, 8422C, 8452C, 8722C, 8752C 28 - Brother International T-8752C | Instruction Manual - English - Page 38
key is illuminated, the sewing machine will stop in the needle up position without thread trimming being carried out. 2160M 29 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 39
through to thread trimming (models with thread trimmer) just by depressing the treadle once, without needing to keep it depressed continuously. T-8421C, 8422C, 8452C, 8722C, 8752C 30 - Brother International T-8752C | Instruction Manual - English - Page 40
before making the change. (The CD display will show the number of stitches and the setting can then be changed.) 31 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 41
function before making the change. (The CD display will show the number of stitches and the setting can then be changed.) T-8421C, 8422C, 8452C, 8722C, 8752C 32 - Brother International T-8752C | Instruction Manual - English - Page 42
. 4. If you press and hold the RESET key (2) for 2 seconds or more, the display will return to the initial value. 33 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 43
up position. • When the needle down icon (25) is illuminated, the needle bar stops in the down position. 4188M 2207M 2208M T-8421C, 8422C, 8452C, 8722C, 8752C 34 - Brother International T-8752C | Instruction Manual - English - Page 44
2139M 4 The setting values will be memorized. 4192M 5 Normal sewing machine operation will then be possible. * For details on other adjustment items, refer to the Service Manual. 4193M 35 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 45
. ENTER key (4) This key is used to accept function settings. MAX key (5) This key is used to change the maximum sewing speed. * Refer to the Service Manual for details on using these keys. 4194M T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 46
to be initialized as shown below. * For details on initialization items other than "init ALL", refer to the Service Manual. Main display " init ALL " " init MEM " " init SPd " " init SEW " Initialization sewing machine operation will then be possible. 4193M 37 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 47
is set when the indicator of this key is illuminated, the indicator of the thread wiper key (6) will switch off. 4174M T-8421C, 8422C, 8452C, 8722C, 8752C 38 - Brother International T-8752C | Instruction Manual - English - Page 48
lock is set, the sewing machine will stop in the needle up position without thread trimming being carried out. 2160M 39 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 49
trimming lock is set, the sewing machine will stop in the needle up position without thread trimming being carried out. 2159M T-8421C, 8422C, 8452C, 8722C, 8752C 40 - Brother International T-8752C | Instruction Manual - English - Page 50
display will return to the setting item. 4205M 4 Setting mode will be exited and normal operation will be possible. 4206M 41 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 51
the display will return to the setting item. 4209M 5 Setting mode will be exited and normal operation will be possible. 4206M T-8421C, 8422C, 8452C, 8722C, 8752C 42 - Brother International T-8752C | Instruction Manual - English - Page 52
display will return to the setting item. 4211M 5 Setting mode will be exited and normal operation will be possible. 4206M 43 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 53
and the display will return to the setting item. 4213M 5 Setting mode will be exited and normal operation will be possible. T-8421C, 8422C, 8452C, 8722C, 8752C 4206M 44 - Brother International T-8752C | Instruction Manual - English - Page 54
once more, the indicator of the MAX key will switch off and normal key operations can then be carried out. 45 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 55
display will return to the setting item. 4220M 5 Normal sewing machine operation will then be possible. * For details on other adjustment items, refer to the Service Manual. 4206M T-8421C, 8422C, 8452C, 8722C, 8752C 46 - Brother International T-8752C | Instruction Manual - English - Page 56
complete, the "in.AL" appearing in the display (1) will disappear and normal sewing machine operation will then be possible. 4206M 47 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 57
which is necessary for sewing. (Refer to the chapter on "5./7. Using the operating panel".) 5. Depress the treadle to start sewing. 2182B T-8421C, 8422C, 8452C, 8722C, 8752C 48 - Brother International T-8752C | Instruction Manual - English - Page 58
can be rotated 90 degrees as shown in the illustration. Select the position (A or B) that is easier to use. 2918M 49 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 59
return to using the backtack function, lower the stopper (6) so that it does not touch the reverse stitching lever plate (7). 2921M T-8421C, 8422C, 8452C, 8722C, 8752C 50 - Brother International T-8752C | Instruction Manual - English - Page 60
stitch is obtained. 1. Lower the presser foot. 2. Adjust by turning the tension nut (2). Becomes weaker 51 Becomes weaker Becomes stronger 2924M T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 61
so that the material does not slip. (Refer to "Adjusting screw height" in the table below as a guide to adjustment.) 1. Loosen the adjusting nut (1). 2. Turn the presser adjusting screw (2) to adjust the presser foot . 34mm Approx. 34mm Approx. 29mm 2925M T-8421C, 8422C, 8452C, 8722C, 8752C 52 - Brother International T-8752C | Instruction Manual - English - Page 62
* After making the adjustment, sew a piece of material to check the floating amount. Raise Lower < Guide to adjustment when sewing curves > When the material is placed under the presser foot (1) and the feed by turning the pretension (1). 2926M 53 2258B T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 63
. Center Pass the thread through. < like to prevent skipped stitches, thread tightening problems such as looping, or thread breakages Thread take amount is too small Start of movement < Guide to adjustment > The standard thread take-up 8752C 54 - Brother International T-8752C | Instruction Manual - English - Page 64
maintain the performance of this machine and to ensure a long service life. Furthermore, if the sewing machine has not been the lubricating oil specified by Brother. * If this type of lubricating oil is difficult to obtain, the 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 65
is applied. 2190M Use only the lubricating oil specified by Brother. * If this type of lubricating oil is difficult to obtain, the recommended oil to use is - Brother International T-8752C | Instruction Manual - English - Page 66
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. 57 T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 67
Use Brother-specified "Grease unit (SA8837-001)". 1. Using the tube 11. CLEANING 2. Applying grease Follow the procedure below to apply remaining inside the tube may deteriorate, and this may affect its lubricating performance.) 2937M T-8421C, 8422C, 8452C, 8722C, 8752C 58 - Brother International T-8752C | Instruction Manual - English - Page 68
(5). The display (3) will change to stitch number display mode and treadle operation will be possible. (This completes the reset procedure.) 59 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 69
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. T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 70
11. CLEANING Use Brother-specified "Grease unit (SA8837-001)". 1. Using the tube 2. Applying grease Follow the procedure below to apply grease to inside the tube may deteriorate, and this may affect its lubricating performance.) 2937M 61 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 71
(3) will change to stitch number display mode and treadle operation will be possible. (This completes the reset procedure.) 2261B 2138M 2139M T-8421C, 8422C, 8452C, 8722C, 8752C 62 - Brother International T-8752C | Instruction Manual - English - Page 72
oil being supplied to the rotary hook when replacing the rotary hook or when changing the sewing speed. 2941M 1. Tilt back the machine head. 2. Turn the oil adjusting screw (1) to adjust has been used for approximately two hours. T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 73
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 the table is 4.5 mm. 3. Tighten the screw (2). 3013M T-8421C, 8422C, 8452C, 8722C, 8752C 64 - Brother International T-8752C | Instruction Manual - English - Page 74
thread to be cut too short, or it might result in thread trimming errors for the left upper thread. 3016M 65 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 75
foundation (-T[]F) For light-weight and medium-weight materials (-[][]3) For heavy-weight materials (-405,-407) 0.25N 0.34N 0.70N Stronger Weaker Weaker Stronger < Adjustment method > Thread take to adjust the tension. 3. Tighten the tension nut (5). 3017M T-8421C, 8422C, 8452C, 8722C, 8752C 66 - Brother International T-8752C | Instruction Manual - English - Page 76
. Model Without thread trimming T-8421C With thread trimming T-8422C T-8722C T-8452C T-8752C Distance (A) 0.9 - 1.2 mm 1.4 - 1.7 mm 3054M 3055M • Check may be cut too short (models with thread trimmer). * These problems may occur particularly if the stitch length is large or when carrying out - Brother International T-8752C | Instruction Manual - English - Page 77
the screw (7). 6. Turn the presser adjusting screw (4) to adjust the presser foot pressure, and then tighten the nut (3). Approx. 7mm 3059M T-8421C, 8422C, 8452C, 8722C, 8752C 68 - Brother International T-8752C | Instruction Manual - English - Page 78
stitch length dial to the actual length of the stitches to be sewn. Standard stitch length Specifications -T[]F -[][]3 -405, -407 Stitch length dial 2 2 3 2. Remove the rubber cap (1). 3. Loosen the screw (5) and move short (models with thread trimmer). 69 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 79
is at its lowest position, but this is not a problem. If using a thread such as polyester thread which does not easily form stable loops * If problems such as skipped stitches or upper thread breakages occur, set could damage the rotary hook tip (15). 2262B T-8421C, 8422C, 8452C, 8722C, 8752C 70 - Brother International T-8752C | Instruction Manual - English - Page 80
T-8452C and T-8752C> 13. Use as polyester thread which does not easily form stable loops * If problems such as skipped stitches or upper thread breakages occur, set the feed bar (2) with the two screws (3). 2. Tighten the feed dog support set screw (4) so that the tip of the set screw (4) touches - Brother International T-8752C | Instruction Manual - English - Page 81
plate and the feed dog are touching, loosen the screw (1) and move the feed rocker base arm (3) sideways to adjust. 3063M T-8421C, 8422C, 8452C, 8722C, 8752C 72 - Brother International T-8752C | Instruction Manual - English - Page 82
(models with thread trimmer). • Large variations in stitch length may occur at slow and fast sewing speeds. Lower Higher 3066M 73 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 83
dog is adjusted, the height of the feed dog will also change, so readjust the height of the feed dog. 3067M T-8421C, 8422C, 8452C, 8722C, 8752C 74 - Brother International T-8752C | Instruction Manual - English - Page 84
14. TROUBLESHOOTING 14. TROUBLESHOOTING y Please check the following points before calling for repairs or service. y If the following remedies do not fix the problem, turn off the power switch and consult a qualified the thread take-up amount. 54 0977M 75 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 85
14. TROUBLESHOOTING Problem Possible cause 3 Skipped stitches occur y Is the needle tip bent? Is the needle tip blunt? while sewing If the needle dog being used? Use a presser foot without slots. Use a feed dog without grooves. Grooves Slot 2946M T-8421C, 8422C, 8452C, 8722C, 8752C 2944M 76 - Brother International T-8752C | Instruction Manual - English - Page 86
14. TROUBLESHOOTING Problem 5 Uneven seam Possible cause y Is the presser foot pressure too replace the bobbin. y Is a bobbin other that the light-alloy bobbins specified by Brother being used? Use only bobbins which are specified by Brother. 2951M 2124M 21 • 22 20 21 • 22 21 • 22 77 T-8421C, - Brother International T-8752C | Instruction Manual - English - Page 87
14. TROUBLESHOOTING Problem Possible cause 9 Upper and lower threads y Is the needle bent or is the needle tip broken? are breaking. Replace the needle if . box? Insert the connector securely. Page 18 20-24 9 51 55 65* * * 54 * 18 * * 14 • 15 2197B T-8421C, 8422C, 8452C, 8722C, 8752C 78 - Brother International T-8752C | Instruction Manual - English - Page 88
14. TROUBLESHOOTING Problem Possible cause 13 Machine does not operate y Is the sewing speed setting or backtack speed setting incorrect? at high speed. Use the time to apply grease. the operation panel when Apply grease. 57* the power is turned on. 79 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 89
14. TROUBLESHOOTING 14-2. Error code displays If an error code appears on the operation panel display 1. OFF switch and check that the actuator switch is not being pressed ・ There is a problem with the actuator switch. Replace the actuator switch. 4266M Page 12* ** * T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 90
E132 Problem with motor operation. ・ Problem with motor. Replace the motor. ・ Problem with drive PCB. Replace the control box. E140 Motor reverse operation. ・ Motor reverse operation was detected. Replace the motor. Page * ** * ** * * * ** 12* * ** 12 81 T-8421C, 8422C, 8452C, 8722C, 8752C - Brother International T-8752C | Instruction Manual - English - Page 91
TROUBLESHOOTING Error code E150 Motor is overheating. Possible cause ・ This is displayed when the motor becomes abnormally hot and the temperature protection has activated. After the temperature has dropped, press the power ON switch and operate the sewing machine as normal. E151 Problem 8752C 82 - Brother International T-8752C | Instruction Manual - English - Page 92
TROUBLESHOOTING voltage. ・ Problem with control voltage. ・ Problem with control box problem with the motor and an abnormal current is flowing. Replace the motor. ・ Problem of the solenoids. ・ Problem with main PCB. Replace the problem, contact the place of purchase. 83 T-8421C, 8422C, 8452C, 8722C - Brother International T-8752C | Instruction Manual - English - Page 93
15. 7-SEGMENT DISPLAY 15. 7-SEGMENT DISPLAY 4268M T-8421C, 8422C, 8452C, 8722C, 8752C 84 - Brother International T-8752C | Instruction Manual - English - Page 94
INSTRUCTION MANUAL © 2010 Brother Industries, Ltd. All Rights Reserved. This is the original instructions. T-8421C, 8422C, 8452C, 8722C, 8752C SB1410-001 E 2010.05. B (1)
T-8421C, 8422C
T-8452C, 8722C
T-8752C
Please read this manual before using the machine.
Please keep this manual within easy reach for quick reference.
TWIN NEEDLE DIRECT DRIVE LOCK STITCHER
INSTRUCTION MANUAL