1. Manuals
  2. Brands
  3. Brother Manuals
  4. Sewing Machine
  5. CS8000 Series
  6. Service manual

Brother CS8000 Series Service Manual

Computerized sewing machine
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
www.promelectroavtomat.ru

Advertisement

Table of Contents
loading

Related Manuals for Brother CS8000 Series

Summary of Contents for Brother CS8000 Series

  • Page 1 www.promelectroavtomat.ru...
  • Page 2 www.promelectroavtomat.ru...

  • Page 3: Main Mechanisms

    1. Outline of Mechanism ................1 - 1 Main Mechanisms ................1 - 2 Driveline ..................1 - 3 Positions of electronic components ..............1 - 4 Control system block diagram ................1 - 6 Main motor control .....................1 - 7 Pattern generator ....................1 - 8 Operation of other electronic components ............1 - 9 Using the threader ...................1 - 10 2.
  • Page 4 Bobbin base assy. disassembly ......................2 - 19 Upper shaft assy. removal ......................2 - 20 Upper shaft assy. disassembly ......................2 - 21 NP PCB assy. removal ........................2 - 21 Needle-presser module removal ....................2 - 22 Thread hook assy. removal ......................2 - 22 Thread unit removal ........................2 - 22 Adjusting plate removal ........................2 - 23 Bobbin winder cover assy.
  • Page 5 T cam removal ..........................2 - 43 Presser bar removal ........................2 - 44 Thread take-up lever link removal ....................2 - 44 Shaft bushing assembly removal ....................2 - 44 Feed module ....................2 - 45 Drop lever SE removal ........................2 - 46 Needle plate A removal ........................2 - 46 Needle plate A disassembly ......................2 - 46 Feed dog removal ...........................2 - 46 FPM spring removal ........................2 - 47...
  • Page 6 Bobbin winder cover assy. assembly ....................3 - 18 Bobbin winder cover assy. attachment ..................3 - 18 Adjusting plate attachment ......................3 - 19 Thread unit attachment .........................3 - 20 Thread hook assy. attachment ......................3 - 21 Needle-presser module attachment ....................3 - 21 NP PCB assy.
  • Page 7 T cam attachment ..........................3 - 50 Shaft attachment ..........................3 - 50 Thread release lever assy. attachment ..................3 - 51 Z pulse motor attachment......................3 - 51 Z zigzag cam attachment .......................3 - 52 Thread releaser assy. attachment ....................3 - 52 Z zigzag lever assy.
  • Page 8 Needle curvature ....................4 - 2 Tip damage to needle ..................4 - 3 Test Mode......................4 - 4 Motor belt tension adjustment ................4 - 5 Needle-presser module and feed module left-right position alignment ....4 - 6 Timing belt tension adjustment ................4 - 7 Needle bar rise adjustment ................4 - 8 Needle bar height adjustment ................4 - 9 Needle interference left/right adjustment.
  • Page 9 Needle bar cutting and separating does not occur normally......5 - 13 Cassette LED does not light ................5 - 14 Bobbin winding cannot be done...............5 - 15 The workspace does not light................5 - 16 The workspace lamp does not light..............5 - 17 LCD does not display normally (S3:CS8100 Series only) .......5 - 18 Buzzer does not sound (S3:CS8100 Series only) ...........5 - 19 Error is displayed .....................5 - 20...
  • Page 10 www.promelectroavtomat.ru viii...

  • Page 11: Table Of Contents

    Main motor control ............ 1 - 7 Pattern generator ............1 - 8 Operation of other electronic components ....1 - 9 Using the threader........... 1 - 10 S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 1 - 1...
  • Page 12 Outline of Mechanism Main Mechanisms Bobbin winder mechanism Thread hook mechanism Needle bar / Presser mechanism Upper shaft mechanism Thread tension mechanism Rotary hook drive mechanism Feed / Rotary hook mechanism www.promelectroavtomat.ru 1 - 2...
  • Page 13 Outline of Mechanism Driveline A) Up and down movement of needle bar, movement of thread take-up lever and zigzag mechanism Thread take-up Unit shaft Joint Upper shaft Pulley counter weight Needle bar crank Thread take-up lever Needle bar crank rod Needle bar block Needle bar supporter Z zigzag lever...
  • Page 14 Outline of Mechanism Positions of electronic components S2 (CS8000 Series) LED Lamp SR assy PCB ASSY:OPERATION S2 ASSY:SSVR PCB ASSY, POWER PCB S:ZSBA125I Power switch/Inlet assy S3 (CS8100 Series) SINGLE LIGHT GUIDE ASSY S3 LED Lamp SR assy PCB ASSY:OPERATION S2...
  • Page 15 Outline of Mechanism ASSY:NP PCB-S ASSY:BWSW-S Z pulse motor BH change switch assy ASSY:MAIN PCB BH switch lever ASSY:MOTOR PCB LED Lamp SL assy ASSY:PFSW-S ASSY:CASSETTE SWITCH F pulse motor www.promelectroavtomat.ru 1 - 5...
  • Page 16 Outline of Mechanism Control system block diagram Inlet AC power supply ASSY, POWER PCB S:ZSBA125I Switching power supply ASSY:MOTOR PCB 26V, 5V Circuit Main motor Main motor drive LED Lamp F pulse motor circuit Z pulse motor ASSY:MAIN PCB Main motor Constant Pulse motor EEPROM...
  • Page 17 Outline of Mechanism Main motor control The sewing machine motor must run stably at low speeds and high speeds even with load temperature and other changes. Therefore, the main motor is run by PMW control that makes use of FETs. Motor voltage waveform Approx.
  • Page 18 Outline of Mechanism Pattern generator Pattern generator Conventionally, a cam that has the mechanical data cut into it has been used to move the adjuster and needle bar and generate the pattern. In contrast, this sewing machine operates an F pulse motor and Z pulse motor, moves the feed adjuster and needle bar and generates the pattern using data (S2:50types, S3:119types) stored in internal CPU memory.
  • Page 19 Outline of Mechanism Operation of other electronic components Start/Stop (SS) Switch ..... . Switch for starting and stopping the sewing machine. The machine operates at a slow speed while the switch is being held down.
  • Page 20 Outline of Mechanism Using the threader The threader provided on this sewing machine is a device for making threading easy, but there are cases where it cannot be used because of the combination of sewing machine thread and needle type. At present, there are various types of sewing machine thread and sewing machine needles on the market for handling a variety of sewing conditions.
  • Page 21 Thread tension mechanism ....2 - 25 Thread hook mechanism ....2 - 33 Modules Needle-presser module ....2 - 36 Feed module........2 - 45 With the CD-ROM version, click to start the movie clip. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 2 - 1...
  • Page 22 Main unit Main partslocation diagram www.promelectroavtomat.ru 2 - 2...

  • Page 23: Main Unit Main Parts

    Main unit Main parts Flap table assy. disassembly 1. Remove the flap table. 2. Remove 1, and remove spring and the table bearing 1 from the flap table. Bobbin winder assy. removal 1. Remove the bobbin base. 2. Remove the screw 1. 3.
  • Page 24 Main unit Main parts Bobbin winder assy. disassembly 1. Remove screw 1 and the 1 M3 nut 1, and remove the bobbin presser 2. 2. 3Remove spring roll pin BW 3x12, and remove the lower thread pin 4. Needle plate B assy. removal 1.
  • Page 25 Main unit Main parts Front cover assy. removal 1. Remove screws 1 (one on the front side, five on the rear side) and screw 2 (one on rear side). 2. Remove the front cover from the arm bed. *Key point •...
  • Page 26 Main unit Main parts Handle removal 1. Remove the screws 1 (two), and detach the handle and the handle fixed plates 1 (two) and handle 2 from the arm bed. Base cover B assy. removal 1. Remove the screws 1 (two), and remove the base cover B assy. 1 from the arm bed.
  • Page 27 Main unit Front coverlocation diagram CS8100 Series CS8000 Series www.promelectroavtomat.ru 2 - 7...

  • Page 28: Front Cover

    Main unit Front cover Cassette cover removal 1. Remove the front cover for the cassette. 2. Remove the link hold plates 1 (two). 3. Remove the cassette cover 2 and cover link plates 3 (two). Start movie clip (CD-ROM version only) Remove base cover A.
  • Page 29 Main unit Front cover PCB assy : operation S2. removal (S2 only). 1. Remove screws 1 (four), and remove the front cover fixed plate 1, PCB cover 2, Board pressers (two) and PCB assy : operation S2. 3. 2. Disconnect the LED PCB-SR assy. connector 4 and the SSVR PCB assy. connector 5 from the PCB assy : operation S2.
  • Page 30 Main unit Front cover Operation PCB assy. disassembly (S2 only) 1. Remove screws 1 (two), and remove the VR holder 1, SV key tops 2 (two) and SW buttons 3 (two). www.promelectroavtomat.ru 2 - 10...
  • Page 31 Main unit Front cover LED PCB-SR assy. removal 1. Remove the screw 1, and remove the LED PCB-SR assy. 1 and lamp holder 2. 1, 2 SSVR PCB assy. removal 1. Remove the screws 1 (two), and remove the SSVR PCB assy. 1, SS button 2, backstitching button 3 and NP button 4.
  • Page 32 Main unit Front cover PCB assy : operation S3. removal (S3 only) 1. Remove screws 1 (four), and remove the front cover fixed plate 1, PCB cover 2, Board pressers (two) and PCB assy : operation S3. 3. Rubber key removal (S3 only) 1.
  • Page 33 Main unit Front cover LED cover removal. 1. Remove the LED cover 1 from the front cover. Break cover removal 1. Remove the screws 1 (two), and remove the break cover 1. Power PCB assy. removal 1. Remove the screw 1, and detach the inlet assy. 1 from the front cover. 2.
  • Page 34 Main unit Rotary hook drive mechanismlocation diagram CS8100 Series CS8000 Series www.promelectroavtomat.ru 2 - 14...

  • Page 35: Rotary Hook Drive Mechanism

    Main unit Rotary hook drive mechanism Main PCB assy./motor PCB assy. removal 1. Disconnect all of the connectors on the main PCB assy. and motor PCB assy. 2. Remove screw 1, screw 2, screw 3 and the plain M3 washer, and remove the main PCB assy.
  • Page 36 Main unit Rotary hook drive mechanism Main motor assembly removal 1. Remove the screws 1 (two), and remove the main motor assy. 1. 2. Remove screw 2, and remove the motor PCB assy. ground wire 2. Main motor assembly disassembly 1.
  • Page 37 Main unit Rotary hook drive mechanism Lower shaft A assy. disassembly 1. Remove screws 1 (set screw, socket (FT) M5X5) (two), and remove the joint. 2. Remove screws 2 (set screw, socket (CP) M4X4) (two), and remove the set screw collar 1, thrust washer 2, eccentric shaft bushing 3 and thrust washer 2.
  • Page 38 Main unit Upper shaft mechanismlocation diagram www.promelectroavtomat.ru 2 - 18...

  • Page 39: Upper Shaft Mechanism

    Main unit Upper shaft mechanism Bobbin winder assy. removal 1. Remove screw 1, and remove the bobbin winder assy. 1 and washer. Bobbin winder assy. disassembly 1. Remove the bobbin base. 2. Remove screws 1 (two), and remove the Board presser 1. 3.
  • Page 40 Main unit Upper shaft mechanism Upper shaft assy. removal 1. Remove screws 1 (set screw, socket (FT) M5X5) (two) and screws 2 (set screw, socket (CP) M4X4) (four), and move the fixed joint 1 to the right side. 2. Remove the screws 3 (two), and remove the upper shaft bearing presser. 3.
  • Page 41 Main unit Upper shaft mechanism Upper shaft assy. disassembly Retaining ring E6 1. Remove the speed shutter 1. 2. Remove retaining ring E6, and move the upper shaft pulley 2 to the right side. 3. Remove the timing shutter 3. 4.
  • Page 42 Main unit Upper shaft mechanism Needle-presser module removal 1. Remove screw 1. 2. Remove screws 2 (four), and remove the presser plate and the upper shaft bushing presser. 3. Remove the needle-presser module. Thread hook assy. removal 1. Remove screws 1 (two), and remove the thread hook assy. Thread unit removal 1.
  • Page 43 Main unit Upper shaft mechanism Adjusting plate removal 1. Remove arm cap. 2. Remove the adjusting screw 1. 3. Remove screws 1 (two), and remove the adjusting plate 2 and the plate spring 3. Bobbin winder cover assy. removal 1. Remove the shafts 1 (two) for the bobbin winder cover, and remove the bobbin winder cover assy.
  • Page 44 Main unit Upper shaft mechanism Bobbin winder cover assy. disassembly 1. Remove the thread tension cover 1. 2. Remove screws 1 (two), and remove the thread tension plate. 3. Remove screw 2, and remove the thread tension assy. 4. Remove the bobbin winder cover supporter 2. Lower thread cutter removal 1.
  • Page 45 Main unit Thread tension mechanismlocation diagram www.promelectroavtomat.ru 2 - 25...

  • Page 46: Thread Tension Mechanism

    Main unit Thread tension mechanism LED lamp removal. 1. Remove screw 1, and remove LED lamp holder L 1 and the LED lamp L assy. 2. 1, 2 Thread take up spring removal Retaining ring E4 1. Remove retaining ring E4, and remove the thread take-up spring cover 1 and thread take-up spring.
  • Page 47 Main unit Thread tension mechanism Damper holder assy. disassembly 1. Remove the screws 1 (two), and remove the spacers 1 (two) and the oil damper 2. 2. Remove retaining ring E2, and remove the damper gear shaft, gear A and gear B.
  • Page 48 Main unit Thread tension mechanism Thread hook assy. disassembly 1 1. Remove screw 1, and remove the link stopper 1. 2. Remove screw 2, and remove the link D guide 2. www.promelectroavtomat.ru 2 - 28...
  • Page 49 Main unit Thread tension mechanism Thread hook assy. disassembly 2 1. Remove the Spring 2. Remove retaining rings E2 (two), and remove the plain 3.5 washers (two), slide plate assy. 1 and the plain S3 washers (two). 3. Remove retaining ring E2, and remove thread hook link A 2, spring and the plain S3 washer.
  • Page 50 Main unit Thread tension mechanism Spring guide assy. removal 1. Remove screw 1, and remove the spring guide assy. 1. Spring guide assy. disassembly Retaining ring E3 1. Remove retaining ring E3, and remove the thread hook link c assy. 1. 2.
  • Page 51 Main unit Thread tension mechanism Thread tension dial removal Retaining ring E3 1. Remove retaining ring E3, and remove the plain S4 washer, polyester slider and spring washer. 2. Remove the thread tension dial shaft 1, and remove the thread tension dial 3.
  • Page 52 Main unit Thread tension mechanism Tension disk removal 1. Remove the tension control nut assy. 1, spring , washer, tension disc washer, thread release plate A, washer, tension disk B and tension disk A. 2. Remove the tension adjusting screw 2 from the tension control nut assy. 3.
  • Page 53 Main unit Thread hook mechanism location diagram www.promelectroavtomat.ru 2 - 33...

  • Page 54: Thread Hook Mechanism

    Main unit Thread hook mechanism Thread take-up lever guide B removal 1. Remove screw 1, and remove thread take-up lever guide B 1. Thread take-up lever guide C removal 1. Remove screw 1, and remove thread take-up lever guide C 1. 2.
  • Page 55 Main unit Thread hook mechanism Thread guide base assy. removal 1. Remove screw 1 and screw 2, remove the plain M3 washer, and remove the thread guide base assy. 1. 2. Remove screws 3 (two), and remove thread take-up lever guide A from the thread guide base supporter 2.
  • Page 56 Modules Needle-presser module breakout diagram www.promelectroavtomat.ru 2 - 36...

  • Page 57: Modules Needle-Presser Module

    Modules Needle-presser module BH switch assy. removal 1. Remove screw 1, and detach the BH switch assy. 1. Presser feed holder assy. removal 1. Remove screw 1, and detach the presser feed holder assy. 1. Adjusting plate assy. removal 1. Remove screws 1 (two), and remove the adjusting plate assy. 1. Spring-Z removal 1.
  • Page 58 Modules Needle-presser module Zigzag adjusting nut removal 1. Remove screw 1, and remove the zigzag adjusting nut 1. Lever A spring and spring removal 1. Remove the spring and the spring Lock nut removal 1. Remove the lock nut 1 and screw 1. Needle bar assy.
  • Page 59 Modules Needle-presser module Needle bar assy. disassembly 1. Remove screw 1, and remove the needle block supporter 1. 2. Remove screw 2, and remove the needle block 2, needle bar thread guide 3 and support spring 4. 3. Remove the needle thread plate 6 from the needle block 5. 3, 4 Needle holder shaft block removal 1.
  • Page 60 Modules Needle-presser module Needle bar supporter assy. removal 1. Remove screw 1, and remove the plate 1. 2. Remove screw 2, and remove the shaft 2. 3. Remove the shaft 3. 4. Remove the needle bar supporter assy. 4. 5. Remove the thread hook assy. 5 from the needle bar supporter assy. Start movie clip (CD-ROM version only) Lever AB assy.
  • Page 61 Modules Needle-presser module Thread guide plate removal 1. Remove thread guide pate 1. Thread take-up assy. disassembly 1. Remove screw 1, and remove the thread take-up assy. 1. NOTE •Screw is reverse threaded. 2. Remove screws 2 (two), and remove the needle bar crank rod assy. 2. Start movie clip (CD-ROM version only) Thread take-up counter weight removal 1.
  • Page 62 Modules Needle-presser module Z pulse motor removal 1. Remove screw 1, and remove the Z pulse motor (ZPMSMJ35-4840-A) Lever release plate assy. removal Retaining ring E3 1. Remove retaining ring E3, and remove the lever release plate assy. 1. Z zigzag lever and thread releaser assy. removal Retaining ring E3 1.
  • Page 63 Modules Needle-presser module Z zigzag cam and shaft removal Retaining ring E2 1. Remove retaining ring E2, and remove the Z zigzag cam 1. 2. Remove the shaft 2. Start movie clip (CD-ROM version only) T cam removal 1. Remove the T cam 1. Start movie clip (CD-ROM version only) www.promelectroavtomat.ru 2 - 43...
  • Page 64 Modules Needle-presser module Presser bar removal 1. Remove screw 1, and remove the presser bar 1, presser bar clamp assy. 2, spring and presser spring supporter. 2. Remove screw 2, and remove the plate spring and presser bar bushing 3. Start movie clip (CD-ROM version only) Thread take-up lever link removal 1.
  • Page 65 Modules Feed module breakout diagram www.promelectroavtomat.ru 2 - 45...

  • Page 66: Feed Module

    Modules Feed module Drop lever SE removal 1. Remove retaining rings E2 (two), and remove slide shafts A 1 (two) and drop lever SE 2. 2. Remove the retaining rings E2 (two) from slide shafts A (two). Retaining ring E2 Needle plate A removal 1.
  • Page 67 Modules Feed module FPM spring removal 1. Remove the spring F pulse motor assy. removal 1. Remove screw 1 and screw 2, and remove spring and the F pulse motor assy. Start movie clip (CD-ROM version only) F pulse motor disassembly 1.
  • Page 68 Modules Feed module Outer rotary hook assy. removal. 1. Remove screw 1, and remove the outer rotary hook shaft 1, spacer 2, outer rotary hook assy. 3, washer 6 4 and spacer 5. Feed bar spring removal 1. Remove the spring Feed bar removal 1.
  • Page 69 Modules Feed module Feed supporting plate spring removal 1. Remove the spring Lower shaft B assy. removal 1. Remove screws 1 (two), and remove the joint 1. 2. Remove screws 2 (two), and remove shaft bushing presser A 2. 3. Remove the lower shaft B assy 3. 4.
  • Page 70 Modules Feed module Lower shaft B assy. disassembly Retaining ring E6 1. Remove retaining ring E6, the thrust washer 1, lower shaft bushing 2 and thrust washer 1. 2. Remove screws 1 (two), and remove the set screw collar 3. *Bottom Feed arm assy.
  • Page 71 Modules Feed module Stopper plate block assy. removal 1. Remove screw 1, and remove the stopper plate block assy 1. *Bottom Feed adjuster assy. removal 1. Remove screws 1 (two), and remove bushing supporter B 1, the feed adjuster assy 2, spring and the polyester slider.
  • Page 72 Modules Feed module Bushing presser B removal 1. Remove screws 1 (three), and remove bushing presser B 1 and the lower shaft bushing 2. Drop assy. removal 1. Remove screws 1 (two), and remove the drop assy 1. Drop assy. disassembly Retaining ring E3 1.
  • Page 73 Front cover ........3 - 35 Main parts........3 - 43 Modules Needle-presser module......3 - 48 Feed module........3 - 64 With the CD-ROM version, click to start the movie clip. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 3 - 1...
  • Page 74 Main unit Thread tension mechanism location diagram www.promelectroavtomat.ru 3 - 2...

  • Page 75: Main Unit Thread Tension Mechanism

    Main unit Thread tension mechanism Tension disk attachment 1. Attach the spring cover shaft 1, thread tension shaft 2 and thread tension holder assy. 2. Attach the thread tension adjusting screw 4 to the tension control nut 3. *Key point •...
  • Page 76 Main unit Thread tension mechanism Thread tension dial attachment 1. Attach the link arm assy. 1 to the thread tension holder assy. 2. Attach the thread tension dial 2 and thread tension dial shaft 3 to the thread tension holder assy. *Key point •...
  • Page 77 Main unit Thread tension mechanism Tension release plate attachment Retaining ring E3 1. Attach thread release plate D 1 to the thread tension holder assy., and attach retaining ring E3. 2. Attach thread release plate B 2 and thread release plate C 3 to the thread tension holder assy., and attach retaining ring E3.
  • Page 78 Main unit Thread tension mechanism Spring guide assy. assembly 1. Attach the cassette switch holder 1 and cassette switch assy. 2 to the spring guide assy. 3 using screw 1. 2. Attach the thread hook link C assy. 4 to the spring guide assy. 3, and attach retaining ring E3.
  • Page 79 Main unit Thread tension mechanism Cassette hold plate attachment Retaining ring E3 1. Attach spring and the cassette hold plate 1 to the thread tension holder assy., and attach retaining ring E3. *Key point • The end 2 of the cassette hold plate runs between tension release plate C 3 and tension release plate D 4.
  • Page 80 Main unit Thread tension mechanism Thread hook assy. assembly 1 1. Attach the thread hook link B assy. 1 and plain S3 washer to the slide plate assy. 2, and attach retaining ring E2. 2. Attach thread hook link A 3, a plain S3 washer and spring to the slide plate assy.
  • Page 81 Main unit Thread tension mechanism Thread hook assy. assembly 2 1. Attach the link D guide 1 to the supporting plate assy. 2 using screw 1. 2. Attach the link stopper 3 to the supporting plate assy. 2 using screw 2. *Key point •...
  • Page 82 Main unit Thread tension mechanism Thread hook assy. attachment 1. Attach the thread hook assy. 1 to the thread tension holder assy. using screws 1 (bolt, socket M3X6). *Key point • Align the shaft 2 of the thread hook link C assy. with the groove 3 in the link D guide.
  • Page 83 Main unit Thread tension mechanism Damper holder assy. assembly 1. Attach the damper gear shaft 1, gear A 2 and gear B 3 to the damper holder assy. 4, and attach retaining ring E2. Retaining ring E2 2. Attach spacers 5 (two) and the oil damper 6 to the damper holder assy. 4 using screws 1 (two).
  • Page 84 Main unit Thread tension mechanism Thread take-up spring attachment 1. Attach the thread take-up spring 1 to the thread take-up spring cover 2. *Key point • Align end A of the thread take-up spring with the center of the thread take-up spring cover groove. Protrusions a •...
  • Page 85 Main unit Thread hook mechanism location diagram www.promelectroavtomat.ru 3 - 13...

  • Page 86: Thread Hook Mechanism

    Main unit Thread hook mechanism Thread guide base assy. attachment 1. Attach Thread take-up lever guide A 2 to the thread guide base supporter 1 using screws 1 (two). 2. Attach the thread guide base assy. 4 using screw 2, screw 3 and a plain M3 washer 3.
  • Page 87 Main unit Thread hook mechanism Thread take-up lever guide C attachment 1. Attach the pile cap 2 to the pile holder 1. 2. Attach the pile holder to thread take-up lever guide C 3 using screw 1. 3. Attach thread take-up lever guide C 3 using screw 2. Start movie clip (CD-ROM version only) Rear Torque...
  • Page 88 Main unit Upper shaft mechanism location diagram www.promelectroavtomat.ru 3 - 16...

  • Page 89: Upper Shaft Mechanism

    Main unit Upper shaft mechanism Foot controller jack assy. attachment 1. Attach the foot controller jack assy. 2 to the arm bed using nut 1. NT lower thread cutter attachment 1. Attach the NT lower thread cutter 1 to the cutter cover. 2.
  • Page 90 Main unit Upper shaft mechanism Bobbin winder cover assy. assembly 1. Attach the bobbin winder cover supporter 1 to the bobbin winder cover. 2. Attach the thread tension assy. 2 to the thread tension plate 3 using screw 1. *Key point •...
  • Page 91 Main unit Upper shaft mechanism Adjusting plate attachment 1. Attach the adjusting plate 1 and the plate spring 2 to the arm bed using screws 1 (two). 2. Attach the adjusting screw 3. *Key point • Hand start the adjusting screw 3 (fully tightening in 3 - 28 "Needle interference provisional adjustment (needle bar, presser back-front position adjustment)"...
  • Page 92 Main unit Upper shaft mechanism Thread unit attachment 1. Lower the presser foot lifter. 2. Turn the T cam, and move the thread releaser assy. to the left side. 3. Attach the thread unit 1 to the needle-presser module using screws 1 (two).
  • Page 93 Main unit Upper shaft mechanism Thread hook assy. attachment *Key point • Attach after 4 - 23"Adjust the needle thread block." 1. Attach the thread hook assy. 1 to the needle-presser module using screws 1 (two). *Key point • Perform 4 - 11"Cassette threading height adjustment." •...
  • Page 94 Main unit Upper shaft mechanism NP PCB assy. attachment 1. Attach the NP PCB assy. 1 to the arm bed using screws 1 (two). Torque Taptite, Bind B M3X10 0.57 - 0.78 N-m Color; Gold Upper shaft assy. assembly Base line 1.
  • Page 95 Main unit Upper shaft mechanism Upper shaft assy. attachment 1. Attach the fixed joint 1 to the upper shaft assy., and move it toward the timing shutter side. *Key point • Approximately half of the fixed joint 1 is hidden by the timing shutter.
  • Page 96 Main unit Upper shaft mechanism Bobbin base assembly 1. Attach the NT lower thread cutters 2 (two) and the bobbin thread cutter holder 3 to the bobbin base 1. Start movie clip (CD-ROM version only) Bobbin winder assy. assembly 1. Attach the BWSW-S assy. 1 to the SW adjust plate 2. 2.
  • Page 97 Main unit Upper shaft mechanism Bobbin winder assy. attachment 1. Attach a washer 1 and the bobbin winder assy. 2 to the arm bed using screw 1. Torque Giza Tite 4X12 0.57 - 0.78 N-m Color; Gold www.promelectroavtomat.ru 3 - 25...
  • Page 98 Main unit Rotary hook drive mechanism location diagram CS8100 Series CS8000 Series www.promelectroavtomat.ru 3 - 26...

  • Page 99: Rotary Hook Drive Mechanism

    Main unit Rotary hook drive mechanism Tension pulley assy. attachment 1. Attach the tension pulley assy. 1 to the arm bed. Feed module attachment 1. Attach the feed module to the arm bed using screws 1 (two). *Key point • Hand start screw 1, and fully tighten after 4 - 6 "Needle- presser module and feed module left-right position alignment."...
  • Page 100 Main unit Rotary hook drive mechanism Needle interference provisional adjustment (needle bar, presser back-front position adjustment) 1. Attach the needle and presser foot. 2. Adjust the position of the needle to the front-back center of the presser foot needle hole using screw 1. 3.
  • Page 101 Main unit Rotary hook drive mechanism Lower shaft A assy. assembly 1. Attach retaining ring E6 to lower shaft A. 2. Attach timing pulley D 1 to lower shaft A using screws 1 (set screw, socket (CP) M5X5) (three) *Key point •...
  • Page 102 Main unit Rotary hook drive mechanism Lower shaft A attachment Upper shaft Base line 1. Rotate the upper shaft by hand, and bring the needle bar to its highest point (timing shutter base line forward). 2. Rotate the feed module lower shaft B, and bring the solid dot 1 on the outer rotary hook to the front and the D cut on lower shaft B to face straight 3.
  • Page 103 Main unit Rotary hook drive mechanism Main motor assy. attachment 1. Attach the motor PCB assy. ground wire 1 to the motor holder 2 using screw 1. 2. Place the timing belt (motor) 3 on the main motor upper shaft pulley, align the main motor assy.
  • Page 104 Main unit Rotary hook drive mechanism Main PCB assy./motor PCB assy. attachment 1. Attach Set plate L 1 and Set plate R 2 to the arm bed using screws 1 (two). 2. Attach the motor PCB assy. to the arm bed using screws 2 (two). 3.
  • Page 105 Main unit Rotary hook drive mechanism Lead assy. processing 1. Bring the various lead wires for the needle-presser module to the shutter cover hook 1, and attach to the main PCB assy. 2. Bring the various lead wires from the feed module to the lead wire guide 2 and shutter cover hook 3, and attach them to the main PCB assy.
  • Page 106 Main unit Rotary hook drive mechanism Ground lead wire assy. attachment 1. Attach the ground lead wire assy. using screws 1 (two). 2. Tighten the ground lead wire assy. to both the shutter cover and Set plate L using the screw 4 attached in "3." of 3 - 32 "8 Main PCB assy./motor PCB assy.
  • Page 107 Main unit Front cover location diagram CS8100 Series CS8000 Series www.promelectroavtomat.ru 3 - 35...

  • Page 108: Front Cover

    Main unit Front cover Power PCB assy. attachment 1. Attach the inlet assy. connector 1 to the power PCB assy. 2. Attach the power PCB assy. to the front cover using screw 1. 3. Attach the inlet assy. 2 to the front cover using screw 2. Torque Taptite, Bind B M3X10...
  • Page 109 Main unit Front cover SV key top attachment 1. Attach the SV key top 1 to the front cover. *Key point • Insert the SV key top from the back of the front cover, fold it in two behind the front cover, and lock the hook. PCB assy : operation S2.
  • Page 110 Main unit Front cover PCB assy : operation S2. attachment (S2 only) 1. Connect the LED PCB-SR assy. connector 1 and the SSVR PCB assy. connector 2 to the PCB assy : operation S2. 2. Attach the PCB assy : operation S2. 3, Board pressers (two), the PCB cover 4 and front cover fixed plate 5 to the front cover using screws 1 (four).
  • Page 111 Main unit Front cover Rubber key attachment (S3 only) 1. Attach the rubber keys 1 to the rubber key holder 2. 2. Attach the rubber key holder 2 to the PCB assy : operation S3 using screws 1 (two). Torque Taptite, Bind B M3X8 0.59 - 0.78 N-m...
  • Page 112 Main unit Front cover PCB assy : operation S3. attachment (S3 only) 1. Attach the PCB assy : operation S3. 1, Board pressers (two), the PCB cover 2 and front cover fixed plate 3 to the front cover using screws 1 (four).
  • Page 113 Main unit Front cover SSVR PCB assy. attachment 1. Attach the SS button 1, backstitching button 2, NP button 3 and thread cutting button 4 to the front cover. 2. Attach the SSVR PCB assy. 5 to the front cover using screws 1 (two). 3.
  • Page 114 Main unit Front cover Base cover A attachment 1. Attach base plate A 2 to the base cover 1 using screws 1 (two). 2. Attach the rubber cushion plinth 3 to base plate A 2 using screws 2 (two). 3. Attach base plate rubbers A (two) to base plate A 2. 4.
  • Page 115 Main unit Main parts location diagram www.promelectroavtomat.ru 3 - 43...

  • Page 116: Main Parts

    Main unit Main parts Base cover B assy. assembly 1. Attach the base plate rubber 1 and adjusting screw 2 to base plate B 3. 2. Attach base plate B 3 to base cover B 4 using screw 1. Torque Taptite, Bind B M3X8 0.57 - 0.78 N-m...
  • Page 117 Main unit Main parts Front cover assy. attachment 1. Connect the operation S2 (or S3) flat cable 1 and the power PCB assy. lead wire connector 2 to the main PCB assy. on the arm bed side. 2. Attach the front cover assy. to the arm bed using screws 1 (one on the front side, five on the rear side) and screw 2 (one on rear side).
  • Page 118 Main unit Main parts Needle plate B assy. attachment 1. Attach the needle plate B assy. 1 to the main unit. 2. Attach the needle plate cover to the needle plate B assy. 1. Bobbin winder plate assy. assembly 1. Attach the lower thread pin 2 to the bobbin winder plate using a spring roll BW3X12 pin 1.
  • Page 119 Main unit Main parts BW plate assy. attachment 1. Install screw 1. 2. Attach the bobbin winder plate assy. 1 to the main unit using screw 2. 3. Attach the bobbin base. Torque Screw, Pan (S/P washer) M3X6DA 0.59 - 0.78 N-m Color;...
  • Page 120 Modules Needle-presser modulebreakout diagram www.promelectroavtomat.ru 3 - 48...
  • Page 121 Modules Needle-presser module Shaft bushing assembly attachment 1. Attach the shaft bushing assy. 1 to the upper unit holder using screws 1 (two). Start movie clip (CD-ROM version only) Torque Set Screw, Socke − 1.18 – 1.57 N M3X5 Color; Bla Thread take-up lever link assembly 1.
  • Page 122 Modules Needle-presser module Presser bar attachment 1. Attach the presser bar bushing 1 and plate spring to the upper unit holder using screw 1. 2. Apply a small amount of Molykote Em30L to the presser bar clamp 2. 3. Lubricate the end of the presser bar 3 with Sewing Lube. 4.

  • Page 123: Modules Needle-Presser Module

    Modules Needle-presser module Thread release lever assy. attachment 1. Apply a small amount of Molykote EM30L to the thread release lever assy. hole 1 hole in the upper unit holder. 2. Attach the thread release lever assy. 2 and polyester slider to the upper unit holder, and attach retaining ring E3.
  • Page 124 Modules Needle-presser module Z zigzag cam attachment Retaining ring E2 1. Install the Z zigzag cam 1 on the Z zigzag cam shaft, and attach retaining washer E2. *Key point • Align the match mark 2 on the Z pulse motor gear and the match mark 3 on the Z zigzag cam.
  • Page 125 Modules Needle-presser module Lever release plate assy. attachment 1. Attach the lever release plate assy. 1 to the upper unit holder, and attach retaining ring E3. *Key point • Align the shaft of the lever release plate assy. with the narrow groove in the T cam.
  • Page 126 Modules Needle-presser module Thread take-up counter weight attachment Retaining ring E6 1. Attach retaining ring E6 to the unit shaft 1. 2. Attach the thrust washer 2, unit shaft 1 and thrust washer 2 to the shaft bushing assembly 3. 3.
  • Page 127 Modules Needle-presser module Thread take-up lever assy. attachment 1. Apply a small amount of Molykote EM30L to the surface of the thread take-up lever 1 on the needle bar crank rod assy. and the thread take-up lever assy. shaft 2. 2.
  • Page 128 Modules Needle-presser module Presser foot lifter attachment Retaining ring E4 1. Attach retaining ring E4 to the presser lift shaft 1. 2. Apply a small amount of Molykote EM30L to the presser lift shaft 1. 3. Insert the presser lift shaft 1 into the square hole 2 in the thread releaser assy., and attach the washers 3 (two) and presser foot lifter 4.
  • Page 129 Modules Needle-presser module Shaft bushing A attachment 1. Attach shaft bushing A 1 to the upper unit holder using screw 1. Start movie clip (CD-ROM version only) Torque Taptite, Bind B − M3X8 0.78 – 1.18 N Color; Gold Lever AB assy. attachment Retaining ring E2 1.
  • Page 130 Modules Needle-presser module Needle bar supporter assy. attachment. 1. Attach the thread hook assy. 1 to the needle bar supporter assy. 1. 2. Attach the needle bar supporter assy. to the upper unit holder. 3. Attach shaft 2 and shaft 3, and install screw 1. 4.
  • Page 131 Modules Needle-presser module Shaft assy. attachment 1. Apply a small amount of Epnoc Grease AP to the needle bar supporter assy. needle roller 1. 2. Attach the needle holder block 2 to the needle bar supporter assy. needle roller 1. *Key point •...
  • Page 132 Modules Needle-presser module Needle bar assy. assembly 1. Attach the needle thread plate 1 to the needle block 2. 2. Attach the needle block 2, needle bar thread guide 3 and support spring 4 using screw 1. 3. Attach the needle block supporter 5 using screw 2. Start movie clip (CD-ROM version only) Needle Clamp Screw Color;...
  • Page 133 Modules Needle-presser module Needle bar assembly attachment 1. Apply a small amount of Epnoc Grease AP to the needle thread block 1. 2. Attach the needle bar 2 to the needle bar crank rod assy. needle bar block 3 and the needle thread block 1, and hand start screws 1 (two). (Fully tighten after 4 - 9 "Needle bar height adjustment,"...
  • Page 134 Modules Needle-presser module Spring (for needle bar supporter assy.) attachment 1. Attach plate 1 and the upper unit 2 holder spring to the needle bar supporter assy. *Key point • Connect the side with the short hook to the needle bar supporter assy.
  • Page 135 Modules Needle-presser module Adjusting plate assy. attachment 1. Attach the adjusting plate assy. 1 to the upper unit holder using screws 1 (two). *Key point • Hold the adjusting plate assy. 1 against the right stopper and attach. • Align the presser lift shaft and the adjusting plate assy. hole 2. •...
  • Page 136 Modules Feed module breakout diagram www.promelectroavtomat.ru 3 - 64...

  • Page 137: Feed Module

    Modules Feed module Drop knob attachment *Inside 1. Attach retaining rings E2 (two) to slide shafts B 1. 2. Attach the drop knob 2 and to the slide shaft B assemblies 1 (two) to the feed base 3, and attach retaining rings E2 (two). 3.
  • Page 138 Modules Feed module Drop assy. attachment 1. Attach the drop assy. 1 using screws 1 (two). Start movie clip (CD-ROM version only) Torque Screw, Bind − M4X5 1.18 – 1.57 N Color; Silver Bushing supporter assy. assembly 1. Attach the lower shaft bushing 1 and lower shaft bushing presser B 2 to the bushing supporter assy.
  • Page 139 Modules Feed module Feed adjuster assy. attachment 1. Attach the feed adjuster assy. 1, polyester slider 2 and spring to the bushing supporter assy. 3. *Key point • Attach spring to the feed adjuster assy. 2 starting with the side having the smaller spring diameter. 2.
  • Page 140 Modules Feed module Feed arm assy. assembly Retaining ring E2 1. Attach the feed arm B assy. 1 to the feed supporting plate assy. 2, and attach retaining ring E2. 2. Lubricate the feed supporting plate assy. 2 shaft with 1 – 2 drops of turbine oil #100.
  • Page 141 Modules Feed module Feed arm assembly attachment 1 Retaining ring E5 1. Attach retaining ring E5 to the horizontal feed shaft 1. 2. Align the feed arm B assy. feed regulator slide shaft 2 with the square hole 3 in the feed adjuster assy. 3.
  • Page 142 Modules Feed module Lower shaft B assy. assembly Retaining 1. Attach the set screw collar 1, thrust washer 2, lower shaft bushing 3 ring E6 and thrust washer 2 to the lower shaft B assy. 4, and attach retaining ring *Key point •...
  • Page 143 Modules Feed module Lower shaft B assy. attachment 1. Attach the bushing supporter A 1 to the feed base 2. 2. Attach the lower shaft B assy. 3. 3. Attach bushing presser A 4 using screws 1 (two). 4. Attach the joint 5 using screws 2 (two). *Key point •...
  • Page 144 Modules Feed module Grease applications 1. Apply a small amount of Epnoc Grease AP to the vertical rod seat 1 on the vertical lever, the lower shaft horizontal feed cam surface 2 and the vertical feed cam surface 3. 2. Apply a small amount of Molykote EM30L grease to the lower shaft gear Apply Epnoc Grease AP to the vertical rod seat Small amount Apply Epnoc Grease AP to the vertical feed cam...
  • Page 145 Modules Feed module Feed bar attachment 1. Apply a small amount Molykote EM30L to the shaft holes 1 (two) in the feed bar. 2. Attach retaining ring E2 to feed bar shaft B 2. 3. Attach the feed bar 3, feed bar shaft A 4, feed bar shaft B 5 and feed bar spacer 6 to feed arm A 7 using screws 1 (two).
  • Page 146 Modules Feed module Outer rotary hook assy. attachment 1. Apply a small amount of Molykote EM30L to the shaft supporter 1. 2. Install the outer rotary hook shaft 2, spacer (thin) 3, outer rotary hook assy. 4, washer 6 (thick) 5 and spacer (thin) 3. *Key point •...
  • Page 147 Modules Feed module FPM holder assy. attachment 1. Turn the F pulse motor gear counterclockwise until the stopper 1 on it touches the FPM holder assy. shaft. 2. 2. Set the feed adjuster assy. 3 to the position in the figure to the right. 3.
  • Page 148 Modules Feed module F gear teeth alignment 1. Apply a small amount of Epnoc Grease AP to the feed adjuster F gear 1. 2. Turn the F pulse motor gear clockwise until the stopper 2 on it touches the bushing supporter assy. shaft 3. 3.
  • Page 149 Modules Feed module Spring attachment (for FPM holder assy.) 1. Attach spring to the feed base 1 and FPM holder assy. 2. Start movie clip (CD-ROM version only) 19.8 SPRING XC2538*** Needle plate A assy. assembly 1. Attach the F gear stopper plate 1 and stopper plate 2 to needle plate A 3 using screws 1 (two).
  • Page 150 Modules Feed module Drop lever SE attachment Retaining ring E2 1. Attach retaining rings E2 (two) to slide shafts A (two). 2. Attach the slide shaft A assemblies (two) and the drop lever SE 1 to the feed base, and attach retaining rings E2 (two). Retaining ring E2 www.promelectroavtomat.ru 3 - 78...
  • Page 151 Adjustment Inspection Needle curvature ......4 - 2 Tip damage to needle.......4 - 3 Test Mode ............4 - 4 Main unit adjustments Motor belt tension adjustment ..4 - 5 Needle-presser module and feed module left-right position alignment....4 - 6 Timing belt tension adjustment..4 - 7 Needle bar rise adjustment....4 - 8 Needle bar height adjustment...4 - 9 Needle interference left/right adjustment..4 - 10...

  • Page 152: Needle Curvature

    Inspection Needle curvature 1. Check to be sure that there is no curvature in the needle on a level block (horizontal block). The gap with the block should be even. Level block www.promelectroavtomat.ru 4 - 2...

  • Page 153: Tip Damage To Needle

    Inspection Tip damage to needle 1. Touch the tip of the needle to your finger, and check to be sure it does not catch. www.promelectroavtomat.ru 4 - 3...

  • Page 154: Test Mode

    Test Mode 1.Starting in test mode With the front cover in place press while turning the power on; the buzzer will sound four times, and test mode will start. Slowly Test mode selection screen (S3 only) 2. Mode selection <S2> Press , and select pattern number (mode).
  • Page 155 Adjustment (Main Unit) Motor belt tension adjustment 1. Loosen giza tite 5X16 (two locations: securing motor holder). 2. Move the motor holder up and down and adjust the motor belt tension. Motor belt deflection when a force of 3 - 4 mm approximately 1 N (100 g) is applied to the middle of the motor belt:...

  • Page 156: Needle-Presser Module And Feed Module Left-Right Position Alignment

    Adjustment (Main Unit) Needle-presser module and feed module left-right position alignment 1. Attach the operation PCB assy. flat cable and power PCB assy. lead wire connector to the main PCB assy., and attach the front cover to the arm bed. 2.

  • Page 157: Timing Belt Tension Adjustment

    Adjustment (Main Unit) Timing belt tension adjustment 1. Remove giza tites (two), and remove the lower shaft bushing presser. 2. Turn the lower shaft bushing, and adjust the timing belt tension. Timing belt deflection when a force of 2 N (200 g) 4 –...

  • Page 158: Needle Bar Rise Adjustment

    Adjustment (Main Unit) Needle bar rise adjustment 1. Attach the operation PCB assy. flat cable and power PCB assy. lead wire connector to the main PCB assy., and attach the front cover to the arm bed. 2. Press while turning the power on (the buzzer will sound four times, and test mode will start). 3.

  • Page 159: Needle Bar Height Adjustment

    Adjustment (Main Unit) Needle bar height adjustment 1. Attach the operation PCB assy. flat cable and power PCB assy. lead wire connector to the main PCB assy., and attach the front cover to the arm bed. 2. Press while turning the power on (the buzzer will sound four times, and test mode will start). 3.

  • Page 160: Needle Interference Left/Right Adjustment

    Adjustment (Main Unit) Needle interference left/right adjustment. 1. Turn the pulley by hand, and insert the tip of the needle into the needle hole. 2. Loosen the screw (3X10). 3. Adjust the needle holder shaft block to the left or right so that the left base line / right base line needle drop is uniform forward and back with respect to the needle plate A hole.

  • Page 161: Cassette Threading Height Adjustment

    Adjustment (Main Unit) Cassette threading height adjustment 1. Perform 4 - 23 "Adjust the needle thread block." 2. Attach the operation PCB assy. flat cable and power PCB assy. lead wire connector to the main PCB assy., and attach the front cover to the arm bed. (without screwing it on). 3.

  • Page 162: Shuttle Return Timing Adjustment

    Adjustment (Main Unit) Shuttle return timing adjustment 1. Perform 4 - 23 "Adjust the needle thread block." 2. Attach the operation PCB assy. flat cable and power PCB assy. lead wire connector to the main PCB assy., and attach the front cover to the arm bed. (without screwing it on). 3.

  • Page 163: Upper Thread Tension Adjustment

    Adjustment (Main Unit) Upper thread tension adjustment 1. Attach the operation PCB assy. flat cable and power PCB assy. lead wire connector to the main PCB assy., and attach the front cover to the arm bed. (without screwing it on). 2.

  • Page 164: Feed Adjustment

    Adjustment (Main Unit) Feed adjustment ●Check (front cover attachment operation) 1. Press while turning the power on (the buzzer will sound four times, and test mode will start). 2. <S2> Select (feed forward and reverse mode) using <S3> Select (feed adjustment mode) using , and press 3.

  • Page 165: Presser Bar Height And Parallel Adjustment

    Adjustment (Main Unit) Presser bar height and parallel adjustment 1. Attach the presser foot (J). 2. Raise the presser foot lifter. 3. Turn the pulley by hand, and lower the feed dog below needle plate A. 4. Loosen the screw (5X10) in the presser bar clamp assy. 5.

  • Page 166: Clearance Between The Needle And The Rotary Hook Point Adjustmen

    Adjustment (Main Unit) Clearance between the needle and the rotary hook point adjustmen 1. Attach the operation PCB assy. flat cable and power PCB assy. lead wire connector to the main PCB assy., and attach the front cover to the arm bed. 2.

  • Page 167: Inner Rotary Hook (Bobbin Thread) Tension Adjustment

    Adjustment (Main Unit) Inner rotary hook (bobbin thread) tension adjustment 1. Set a bobbin (wound with Schappe Spun Sewing Thread #60) in the inner rotary hook and thread. 2. Pull the thread with a tension gauge, and adjust the tension adjusting screw so that it is 0.1 – 0.12 N (10 – 12 g). 3.

  • Page 168: Bobbin Winder (Uneven Bobbin Winding And Bobbin Winding Amounts) Adjustment

    Adjustment (Main Unit) Bobbin winder (uneven bobbin winding and bobbin winding amounts) adjustment 1. Move the bobbin winder tension assy. up and down to adjust uneven bobbin winding. 2. Fully tighten the screw, pan (S/P washer) M3X6. Screw, pan (S/P washer) M3X6 torque 0.39 - 0.78 N-m 3.
  • Page 169 Adjustment (Modules) Front/back, left/right position of feed dog adjustment 1. Remove screws M4 (two), and remove needle plate A (1). 2. Align the feed adjuster assy. gear and F pulse motor gear match marks (feed in 0 mm position). Match mark 3.

  • Page 170: Feed Dog Height Adjustment

    Adjustment (Modules) Feed dog height adjustment 1. Turn lower shaft B, and bring the feed dog to its highest position (D cut of the lower shaft B facing up). 2. Loosen the M5 nut. 3. Adjust the feed dog height so that it is 0.9 – 1.1 mm from the upper surface of needle plate A by the amount the vertical feed adjuster assembly is screwed in.

  • Page 171: Inner Rotary Hook Bracket Position Adjustment

    Adjustment (Modules) Inner rotary hook bracket position adjustment 1. Set the inner rotary hook in the outer rotary hook. 2. Loosen screw (bind 3X8). 3. Adjust the inner rotary hook bracket assy. attachment position so that contact between the inner rotary bracket assy.

  • Page 172: Forward And Back Adjustment Of Needle And Presser

    Adjustment (Modules) Forward and back adjustment of needle and presser. 1. Turn the pulley by hand, and insert the tip of the needle into the needle hole. 2. Adjust the amount set screw, socket (FT) M4X12 is tightened so that the tip of the needle is centered in the presser foot needle hole back to front.

  • Page 173: Adjust The Needle Thread Block

    Adjustment (Modules) Adjust the needle thread block 1. Remove taptite, bind B M4X10 (two), and remove the thread hook assy. 2. Set the needle bar to the left base line. 3. Attach a needle. 4. Turn the pulley by hand, and set the needle bar at the highest point (position where the timing shutter base line faces forward) 5.

  • Page 174: Bh Lever Switch Position Adjustment

    Adjustment (Modules) BH lever switch position adjustment 1. Raise the presser foot lifter. 2. Set the BH presser two marks smaller than the maximum length. 3. Attach the BH presser foot. 4. Lower the presser foot lifter. 5. Lower the BH lever, and set to BH presser foot. 6.
  • Page 175 Failure Investigation for Electronic Parts * Perform resistance measurements after turning off the power and detaching the connectors to be measured from the PCB. Error code list ........5 - 2 Power cannot be turned on ....5 - 3 Pulse motors do not return to starting point ..5 - 4 Pattern cannot be selected....5 - 5 Main motor does not turn....5 - 6 Main motor rotation abnormal...5 - 8...
  • Page 176 Failure Investigation for Electronic Parts Error code list Error code Cause S2 (CS8000 Series) S3 (CS8100 Series) See page 5-20 1. Rotation irregularity judgment 2. Key pressed continually with power ON 5-21 (motion system SW) 3. Key pressed continually with power ON...

  • Page 177: Power Cannot Be Turned On

    2-3, pins 4-3 and pins 5-6? Replace power PCB assy. • Pins 2-3 ... 5V DC • Pins 4-3 ... 26V DC • Pins 5-6 ... 26V DC Replace main PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 3...

  • Page 178: Pulse Motors Do Not Return To Starting Point

    (connected to CN13 (S2) or CN14 (S3) Replace power PCB assy. on main PCB assy.) is disconnected, is the voltage across pins 4-3 26V DC? Replace main PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 4...

  • Page 179: Pattern Cannot Be Selected

    Is the foot controller connector correctly connected to CN14 (S2) or Reconnect it correctly CN15 (S3) on the main PCB assy.? • Replace operation PCB assy. • Replace main PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 5...

  • Page 180: Main Motor Does Not Turn

    Failure Investigation for Electronic Parts Main motor does not turn Main motor does not turn Adjust the upper shaft Does the pulley turn easily? assembly Is the main motor connector correctly connected to CN1 on the Reconnect it correctly motor PCB assy.? Is the main motor resistance 1.5-3.5Ω? Replace the main motor Are the resistance values for the...
  • Page 181 Select test mode10 (S2) or 11 mode 10 (S2) or 11 (S3) selected after (S3) and push reverse SW. servicing, and pushed reverse SW? Replace main PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 7...

  • Page 182: Main Motor Rotation Abnormal

    Have parts Q1, Q4, Q5, R1, R2, R4, R6, D1 or ZD1 on the motor PCB assy. Replace motor PCB assy. become discolored or burned? Replace main PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 8...

  • Page 183: Cannot Sew Pattern Well

    Replace NP PCB-S assy. pins 4-1 and pins 5-1 of CN1 (S2) or CN2 (S3) on the main PCB assy. vary 0-5V DC? Replace main PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 9...

  • Page 184: Cannot Sew Button Holes Well

    Failure Investigation for Electronic Parts Cannot sew button holes well. Cannot sew button holes well Switch to the correct presser Is the proper presser foot being used? foot Is the resistance between pins 4-5 on • Adjust the BH lever the BH switch lever connector normal? •...

  • Page 185: Problems With Vertical Needle Movement And Backstitching

    1 of CN1 (S2) or CN2 (S3) on the main PCB assy. vary 0-5V DC? Adjust the BWSW assy. Is the BWSW assy. OFF? assembly Replace main PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 11...

  • Page 186: Does Not Operate When The Foot Controller Is Used

    Failure Investigation for Electronic Parts Does not operate when the foot controller is used. Does not operate when the foot controller is pressed Is the resistance between pins 2-3 on the foot controller jack assy. connector normal? Replace the foot controller •...

  • Page 187: Needle Bar Cutting And Separating Does Not Occur Normally

    Failure Investigation for Electronic Parts Needle bar cutting and separating does not occur normally. Needle bar cutting and separating does not occur normally Is the needle bar cutting and Adjust the needle-presser separating operation easy and module assembly smooth? Is the resistance across pins 1-2 and pins 3-4 for the Z pulse motor Replace the Z pulse motor connector 4-6 Ω?

  • Page 188: Cassette Led Does Not Light

    Failure Investigation for Electronic Parts Cassette LED does not light Cassette LED does not light Is the cassette switch assy. resistance normal? Replace the cassette switch • Cassette switch assy. resistance assy. When switch is pressed ... 1Ω or less When switch is not pressed ...

  • Page 189: Bobbin Winding Cannot Be Done

    Failure Investigation for Electronic Parts Bobbin winding cannot be done. Bobbin winding cannot be done. Adjust the bobbin winder Is the bobbin winder mechanism assy. for correct assembly assembly and attachment normal? and attachment Is the resistance between pins 1-2 on the BWSW assy.

  • Page 190: The Workspace Does Not Light

    Failure Investigation for Electronic Parts The workspace does not light. The workspace lamp does not light. Are the operate PCB assy. and LED Reconnect the operate PCB assy. lamp SR assy. correctly connected? and LED lamp SR assy. correctly Are the main PCB assy. and LED Reconnect the main PCB assy.
  • Page 191 When CN3 (S2) or CN2 (S3) on the operate PCB assy. is connected to another Replace the LED lamp SR assy. LED lamp SR assy., does the lamp light? Replace main PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 17...

  • Page 192: Lcd Does Not Display Normally (S3:Cs8100 Series Only)

    Failure Investigation for Electronic Parts LCD does not display normally (S3:CS8100 Series only) LCD does not display normally Is the LCD FFC correctly connected Reconnect the LCD FFC to CN 3 to CN 3 on the operate PCB assy.? on the operate PCB assy. correctly When the FFC from a different single light Replace the single light guide guide assy.

  • Page 193: Buzzer Does Not Sound (S3:Cs8100 Series Only)

    Failure Investigation for Electronic Parts Buzzer does not sound (S3:CS8100 Series only) When the power is turned ON, or when a pattern is selected, the buzzer does not sound Is the buzzer "ON/OFF" setting set Set the buzzer setting to "ON" to "ON"...

  • Page 194: Error Is Displayed

    After replacing the motor PCB assy., push the reverse SW in test mode "10 Replace main PCB assy. (S2) or 11 (S3)". therefore does the motor rotate normally? S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 20...
  • Page 195 "F2 (S2) or F02 (S3)" is displayed Is one of the SS key, NP key and, BK key stuck in a pressed down Replace SSVR PCB assy. condition? Release the switch that is stuck S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 21...
  • Page 196 Is any key, except the SS key, NP key and BK key stuck in a pressed Replace SSVR PCB assy. down condition? Release the switch that is stuck S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 22...
  • Page 197 CN14 (S2) assy. to CN14 (S2) or CN15 (S3) on or CN15 (S3) on the main PCB the main PCB assy. correctly? assy.? Replace main PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 23...
  • Page 198 Connect the NP PCB assy. to connected to CN1 (S2) or CN2 CN1 (S2) or CN2 (S3) on the (S3) on the main PCB assy.? main PCB assy. correctly Replace NP PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 24...
  • Page 199 Connect the NP PCB assy. to connected to CN1 (S2) or CN2 CN1 (S2) or CN2 (S3) on the (S3) on the main PCB assy.? main PCB assy. correctly Replace NP PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 25...
  • Page 200 CN2 (S2) or CN1 to CN2 (S2) or CN1 (S3) on the (S3) on the operate PCB assy.? operate PCB assy. correctly Replace SSVR PCB assy. S2 : CS8000 Series S3 : CS8100 Series www.promelectroavtomat.ru 5 - 26...
  • Page 201 Repair Manual www.promelectroavtomat.ru 6 - 1...
  • Page 202 Repair Manual Items for Inspection method and Problem Primary factors and causes Repair method Inspection standards Stitch skipping Needle tip smashed during sewing Needle replacement Needle curvature Remove the needle, place Thread fraying Needle catches and bends before or on level block (horizontal Thread breakage after sewing.
  • Page 203 Repair Manual Items for Inspection method and Problem Primary factors and causes Repair method Inspection standards Does not turn Bad main motor Replace main motor (3-31) Sewing machine Confirm that the sewing (electronic sound runs at stop/start machine starts/stops with Main motor connector disconnection Plug connector in (3-33)
  • Page 204 Repair Manual Items for Inspection method and Problem Primary factors and causes Repair method Inspection standards 11 Sewing sounds Operating noise There should be no abnormal noise at fast, Inappropriate sounds middle and slow speed in 3 • Thread take-up Thread take-up lever shaft noise point drop (test mode 3).
  • Page 205 Repair Manual Items for Inspection method and Problem Primary factors and causes Repair method Inspection standards 12 Thread cassette Bad needle stop position Threading function When threading is carried operation catches part out with Schappe Spun • NP sensor damage Replace NP PCB assy.
  • Page 206 Repair Manual Items for Inspection method and Problem Primary factors and causes Repair method Inspection standards 16 Seam unevenness Seam unevenness. No seam unevenness in utility sewing. • Bad presser position Readjust presser bar height (4-15) • Cloth presser foot is high and Readjust presser bar height (4-15) does not hold material...
  • Page 207 www.promelectroavtomat.ru...
  • Page 208 www.promelectroavtomat.ru...

This manual is also suitable for:

Cs8100 series

Table of Contents