Brother T-8752B Instruction Manual

T-8421B TWIN NEEDLE DIRECT DRIVE LOCK STITCHER T-8422B TWIN NEEDLE DIRECT DRIVE LOCK STITCHER WITH THREAD TRIMMER T-8452B TWIN NEEDLE DIRECT DRIVE

T-8421B, 8422B, 8452B, 8722B, 8752B 2. NAMES OF MAJOR PARTS 3 2. NAMES OF MAJOR PARTS (1) Bo

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 43. INSTALLATION CAUTION Machine installation should only be carried out by a qualif

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 5 3-1. Table processing diagram  The top of the table should be 40 mm in thickness and should b

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 63. Power switch (1) Power switch (2) Screws [2 pcs] 4. Oil pan (1) Head cushion

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 7 7. Machine head (1) Hinges [2 pcs] (2) Machine head (3) Head rest NOTE: Tap the head rest (3

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 810. Knee lifter plate (1) Knee lifter plate (2) Bolt * Loosen the bolt (3) and the bolt (4),

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 9 3-3. Lubrication CAUTION Do not connect the power cord until lubrication has been compl

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 10عLubrication Apply 1 - 2 drops of oil to the places indicated by the arrows.

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 11 3-4. Connecting the cords DANGER Wait at least 5 minutes after turning off the power swi

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 12(1) 7-pin head detector unit connector (2) 10-pin operating panel connector (3) 14-pin enco

Thank you very much for buying a BROTHER sewing machine. Before using your new machine, please read the safety instructions below and the explanation

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 13 3. Other cords (1) 6-pin power supply connector (2) 4-pin motor connector (3) Wire clip (4)

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 144. Ground wire (1) Ground wire (2) Screw [With washer] (3) Screw NOTE: Always be sure to co

T-8421B, 8422B, 8452B, 8722B, 8752B 3. INSTALLATION 15 3-5. Test operation (Operating the treadle) CAUTION Do not touch any of the moving part

T-8421B, 8422B, 8452B, 8722B, 8752B 4. PREPARATION BEFORE SEWING 164. PREPARATION BEFORE SEWING 4-1. Installing the needle CAUTION Turn off th

T-8421B, 8422B, 8452B, 8722B, 8752B 4. PREPARATION BEFORE SEWING 17 4-2. Removing the bobbin CAUTION Turn off the power switch before removing

T-8421B, 8422B, 8452B, 8722B, 8752B 4. PREPARATION BEFORE SEWING 184-3. Winding the lower thread CAUTION Do not touch any of the moving parts

T-8421B, 8422B, 8452B, 8722B, 8752B 4. PREPARATION BEFORE SEWING 19 4-4. Installing the bobbin CAUTION Turn off the power switch before instal

T-8421B, 8422B, 8452B, 8722B, 8752B 4. PREPARATION BEFORE SEWING 20<Bobbin case type> 1. Insert the bobbin (1) into the bobbin case (2) so tha

T-8421B, 8422B, 8452B, 8722B, 8752B 4. PREPARATION BEFORE SEWING 21 4-5. Threading the upper thread CAUTION Turn off the power switch before t

T-8421B, 8422B, 8452B, 8722B, 8752B 4. PREPARATION BEFORE SEWING 22 Do not pass th

T-8421B, 8422B, 8452B, 8722B, 8752B iSAFETY INSTRUCTIONS [1] Safety indications and their meanings This instruction manual and the indications and sy

T-8421B, 8422B, 8452B, 8722B, 8752B 4. PREPARATION BEFORE SEWING 23 4-6. Adjusting the stitch length 1. Unlock the stitch length dial (2) by turnin

T-8421B, 8422B, 8452B, 8722B, 8752B 4. PREPARATION BEFORE SEWING 244-9. Corner sewing method (T-8452B, 8752B) NOTE: If using this machine in place o

T-8421B, 8422B, 8452B, 8722B, 8752B 5. USING THE OPERATION PANEL (BASIC OPERATIONS) 25 5. USING THE OPERATION PANEL (BASIC OPERATIONS) 5-1. Names

T-8421B, 8422B, 8452B, 8722B, 8752B 5. USING THE OPERATION PANEL (BASIC OPERATIONS) 26 (6) Fixed stitch key When this key is pressed so that

T-8421B, 8422B, 8452B, 8722B, 8752B 5. USING THE OPERATION PANEL (BASIC OPERATIONS) 27 5-2. Sewing start and end backtack stitches 1 Se

T-8421B, 8422B, 8452B, 8722B, 8752B 5. USING THE OPERATION PANEL (BASIC OPERATIONS) 285-3. Sewing fixed stitches 1 From 1

T-8421B, 8422B, 8452B, 8722B, 8752B 5. USING THE OPERATION PANEL (BASIC OPERATIONS) 29 5-4. Using the lower thread counter  The lower thread coun

T-8421B, 8422B, 8452B, 8722B, 8752B 6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 306. USING THE OPERATION PANEL (ADVANCED OPERATIONS) The oper

T-8421B, 8422B, 8452B, 8722B, 8752B 6. USING THE OPERATION PANEL (ADVANCED OPERATIONS) 31 6-2. Adjusting the needle up stop position 1. While pressi

T-8421B, 8422B, 8452B, 8722B, 8752B 7. SEWING327. SEWING CAUTION Attach all safety devices before using the sewing machine. If the machine is

T-8421B, 8422B, 8452B, 8722B, 8752B ii[2] Notes on safety DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the po

T-8421B, 8422B, 8452B, 8722B, 8752B 7. SEWING 33 7-2. Backtacking When the actuator (1) or the reverse lever (2) is pressed during sewing, the feed

T-8421B, 8422B, 8452B, 8722B, 8752B 7. SEWING347-3. Sewing condensed stitches  If you press the actuator (1) or the reverse lever (2) while sewing

T-8421B, 8422B, 8452B, 8722B, 8752B 8. THREAD TENSION 35 8. THREAD TENSION 8-1. Adjusting the thread tension Good even stitches Upper threa

T-8421B, 8422B, 8452B, 8722B, 8752B 8. THREAD TENSION 368-2. Adjusting the presser foot pressure Correct stitches Upper thread Ski

T-8421B, 8422B, 8452B, 8722B, 8752B 8. THREAD TENSION 37 8-3. Adjusting the presser foot floating amount (minute lifting amount) • When sewing stre

T-8421B, 8422B, 8452B, 8722B, 8752B 8. THREAD TENSION 388-5. Adjusting the thread take-up amount The thread take-up amount is adjusted by how the th

T-8421B, 8422B, 8452B, 8722B, 8752B 9. CLEANING 39 9. CLEANING CAUTION Turn off the power switch before carrying out cleaning. The machine m

T-8421B, 8422B, 8452B, 8722B, 8752B 9. CLEANING 40<Draining lubricating oil> 1. If the oiler (1) has filled with oil, unscrew the oiler (1) a

T-8421B, 8422B, 8452B, 8722B, 8752B 9. CLEANING 41 9-3. Applying grease --- When “GREASEUP” appears (Semi dry specifications) If “GREASEUP" f

T-8421B, 8422B, 8452B, 8722B, 8752B 9. CLEANING 42<Applying grease> Use Brother-specified “Grease unit (SA8837-001)”. 1. Using the tube

T-8421B, 8422B, 8452B, 8722B, 8752B iii CAUTION Sewing This sewing machine should only be used by operators who have received the necessa

T-8421B, 8422B, 8452B, 8722B, 8752B 9. CLEANING 43 <Resetting the grease consumption amount> After the g

T-8421B, 8422B, 8452B, 8722B, 8752B 10. ADJUSTING THE ROTARY HOOK LUBRICATION AMOUNT4410. ADJUSTING THE ROTARY HOOK LUBRICATION AMOUNT CAUTION

T-8421B, 8422B, 8452B, 8722B, 8752B 11. TROUBLESHOOTING 45 11. TROUBLESHOOTING  Please check the following points before calling for repairs or ser

T-8421B, 8422B, 8452B, 8722B, 8752B 11. TROUBLESHOOTING46 3 Skipped stitches occur while sewing  Is the needle tip bent? Is the needle tip blunt? I

T-8421B, 8422B, 8452B, 8722B, 8752B 11. TROUBLESHOOTING 47 Problem Possible cause Page 5 Uneven seam  Is the presser foot pressure too weak? Adju

T-8421B, 8422B, 8452B, 8722B, 8752B 11. TROUBLESHOOTING48 Problem Possible cause Page 9 Upper and lower threads are breaking.  Is the needle bent

T-8421B, 8422B, 8452B, 8722B, 8752B 11. TROUBLESHOOTING 49 Problem Possible cause Page 13 Machine does not operate at high speed.  Is the sewing

T-8421B, 8422B, 8452B, 8722B, 8752B 11. TROUBLESHOOTING5011-2. Error code displays If an error code appears on the operation panel display 1. Make

T-8421B, 8422B, 8452B, 8722B, 8752B 11. TROUBLESHOOTING 51 Error code Possible cause Page Err 5 (Safety switch operated)  Is the machine conn

T-8421B, 8422B, 8452B, 8722B, 8752B 11. TROUBLESHOOTING52 Error code Possible cause Page Err 12 (Solenoid power supply error)  Is solenoid fus

T-8421B, 8422B, 8452B, 8722B, 8752B iv [3] Warning labels The following warning labels appear on the sewing machine. Please follow the instructions o

T-8421B, 8422B, 8452B, 8722B, 8752B 11. TROUBLESHOOTING 53 Error code Possible cause Page Err 21 (Thermistor error)  Is connector CN16 inside

INSTRUCTION MANUAL http://www.brother.com/ T-8421B, 8422B, 8452B , 8722B, 8752BSA2698-6012008.06.B (1)

T-8421B, 8422B, 8452B, 8722B, 8752B CONTENTS 1. MACHINE SPECIFICATIONS ... 1 2. NAMES OF MAJOR PARTS ... 3 3. INSTALLATION.

T-8421B, 8422B, 8452B, 8722B, 8752B 1. MACHINE SPECIFICATIONS 1 1. MACHINE SPECIFICATIONS 4 7 A Rotary hook Standard hook Large

T-8421B, 8422B, 8452B, 8722B, 8752B 1. MACHINE SPECIFICATIONS 2T-8421B -T3F -T33 -T03 -T05 Max. sewing speed 3,000 rpm 3,000 rpm 4,000 rpm 3,0