Page 4: Table Of Contents
1. Outline of Mechanism ................1 - 1 Main Mechanisms ................1 - 2 Driveline ..................1 - 3 Positions of electronic components ..........1 - 4 Control system block diagram ............1 - 5 Operation of other electronic components ........1 - 6 2. Basics of Disassembly/Assembly .............2 - 1 Main parts ......................2 - 2 Removal of Accessory table ......................2 - 3 Removal of Needle plate B assy ......................2 - 3...
Page 5 Main parts ......................2 - 29 Attachment of Front cover assy .......................2 - 30 Attachment of Face plate .........................2 - 31 Attachment of Base cover ........................2 - 31 Attachment of Needle plate B assy ....................2 - 31 Attachment of Accessory table ......................2 - 32 3.
Page 6 Feed and rotary module ...................3 - 23 Removal of Inner rotary hook assy ....................3 - 24 Removal of Needle plate A assy ......................3 - 24 Disassembly of Needle plate A assy ...................3 - 24 Removal of Feed dog ........................3 - 24 Removal of Spring ...........................3 - 25 Removal of FPM holder sub assy ....................3 - 25 Removal of Z pulse motor .......................3 - 26...
Page 7 Attachment of Bobbin presser .....................3 - 44 Attachment of Spool pin holder ....................3 - 45 Attachment of Spool pin ......................3 - 46 Assembly of Front cover assy ......................3 - 47 Attachment of Base plate rubber (Front cover side) ..............3 - 47 Attachment of Thread guide wire ....................3 - 47 Attachment of Front cover thread guard ..................3 - 47 Attachment of Decoration cover ....................3 - 48...
Page 8 Attachment of Inner rotary hook bracket assy ................3 - 75 Attachment of F pulse motor ......................3 - 75 Attachment of FPM holder sub assy ....................3 - 76 Alignment of F gear teeth ........................3 - 77 Attachment of Spring ........................3 - 77 Attachment of Feed dog ........................3 - 78 Attachment of Needle plate A assy ....................3 - 78 Assembly of Needle plate A assy ....................3 - 78...
Page 9 BH lever switch position ...................4 - 17 Needle and presser foot front/back position ............4 - 18 Front/back and left/right position of feed dog ...........4 - 19 Feed dog height ....................4 - 20 Inner rotary hook bracket position ..............4 - 21 Inner rotary hook assy.
Page 10: Outline Of Mechanism
Outline of Mechanism Main Mechanisms ............ 1 - 2 Driveline ..............1 - 3 Positions of electronic components......1 - 4 Control system block diagram........1 - 5 Operation of other electronic components ....1 - 6 1 - 1...
Page 11: Main Mechanisms
Outline of Mechanism Main Mechanisms Bobbin winder mechanism Thread tension mechanism Needle bar / Presser foot mechanism Upper shaft mechanism Needle threader mechanism Lower shaft mechanism Feed / Rotary hook mechanism 1 - 2...
Page 12: Driveline
Outline of Mechanism Driveline A) Up and down movement of needle bar, movement of thread take-up lever and zigzag movement of needle bar mechanism Thread take-up 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 13: Positions Of Electronic Components
Outline of Mechanism Positions of electronic components Front cover side LCD module Operation PCB SS-VR PCB LED lamp Machine (rear cover) side BW switch PF switch Z pulse motor Main PCB BH change switch NP sensor BH lever switch Power supply PCB Main motor Foot controller jack Power switch/Inlet...
Page 14: Control System Block Diagram
Outline of Mechanism Control system block diagram MACHINE (REAR COVER) PF SW BH SW MAIN PCB BW SW SENSOR 1 SENSOR 2 SENSOR FOOT CONTROLLER JACK Z PULSE Z PULSE MOTOR MOTOR BUZZER DRIVER F PULSE EEPROM F PULSE MOTOR MOTOR DRIVER RESET IC...
Page 15: Operation Of Other Electronic Components
Outline of Mechanism Operation of other electronic components Start/Stop (SS) button....Button for starting and stopping the sewing machine. The machine operates at a slow speed while the button is being held down.
Page 16: Basics Of Disassembly/Assembly
Basics of Disassembly/Assembly In this chapter, explains the disassembly and assembly of the each module. When fix by a unity of the module, use this chapter. * When fix and replace the part of the module, refer to “CHAPTER 3 Applications of Disassembly/assembly.
Page 17: Disassembly Main Parts
Basics of Disassembly Main parts Main parts location diagram 2 - 2...
Page 18 Basics of Disassembly Main parts Removal of Accessory table 1. Remove the accessory table 1. Removal of Needle plate B assy 1. Slide the slide button B 1, and then remove the needle plate B assy. 2. → Refer to 3 - 3 "Disassembly of Needle plate B assy". Removal of Base cover 1.
Page 19 Basics of Disassembly Main parts Removal of Face plate 1. Remove the screw 1. 2. Remove the face plate 1. 2 - 4...
Page 20: Removal Of Front Cover Assy
Basics of Disassembly Main parts Removal of Front cover assy 1. Lower the presser lever 1. 2. Remove the screw 1 from the side of the front cover and remove the screw 2, 2 screws 3 and 5 screws 4 from the side of the rear cover, and then remove the front cover assy.
Page 21: Electrical Parts And Motors
Basics of Disassembly Electrical parts and motors Electrical parts and motors location diagram 2 - 6...
Page 22 Basics of Disassembly Electrical parts and motors Removal of Main PCB assy 1. Remove the screw 1, and then remove the lead wire assy: ground 1. 2. Remove the all connectors of the main PCB assy. 2, and then remove the all lead wires from the guide parts of the shutter cover 3.
Page 23 Basics of Disassembly Electrical parts and motors Removal of Inlet assy 1. Remove the screw 1, and then remove the inlet presser 1 and the inlet assy. 2. Removal of Foot controller jack assy 1. Remove the nut F 1, and then remove the foot controller jack assy. 2. 2 - 8...
Page 24 Basics of Disassembly Electrical parts and motors Removal of Main motor assy 1. Remove the 2 screws 1, and then remove the 2 washer EX tooth 5 1 and the main motor assy. 2. 2. Remove the timing belt 372-2GT-6 (motor belt) 3 from the gear part of the main motor assy.
Page 25: Needle Bar, Presser Mechanism / Upper Shaft Mechanism
Basics of Disassembly Needle bar, presser mechanism / Upper shaft mechanism Needle bar, presser mechanism / Upper shaft mechanism location diagram 2 - 10...
Page 26 Basics of Disassembly Needle bar, presser mechanism / Upper shaft mechanism Removal of Tension pulley assy 1. Remove the 2 screws 1, and then remove the tension pulley assy. 1. → Refer to 3 - 20 "Disassembly of Tension pulley assy". Removal of Upper shaft assy 1.
Page 27: Feed Mechanism
Basics of Disassembly Feed mechanism Feed mechanism location diagram 2 - 12...
Page 28 Basics of Disassembly Feed mechanism Removal of Feed module 1. Remove the 2 screws 1, and then remove the upper shaft bearing presser 2. Remove the 2 screws 2, and then remove the 2 washer EX tooth 5 2 and the feed module 3.
Page 29: Bobbin Winder Mechanism
Basics of Disassembly Bobbin winder mechanism Bobbin winder mechanism location diagram 2 - 14...
Page 30 Basics of Disassembly Bobbin winder mechanism Removal of Bobbin winder assy 1. Remove the screw 1, and then remove the bobbin winder shaft stopper 1 and the bobbin winder shaft spring 2. 2. Remove the 2 screws 2, and then remove the bobbin winder assy. 3. →...
Page 31 Basics of Assembly Bobbin winder mechanism Bobbin winder mechanism location diagram 2 - 16...
Page 32 Basics of Assembly Bobbin winder mechanism Attachment of Bobbin winder assy 1. Set the shaft of the bobbin winder assy. 1 to the positioning part of the rear cover assy. with the 2 screws 1. 2. Insert the BW switch lever 2 into the positioning hole of the bobbin winder shaft stopper 3.
Page 33 Basics of Assembly Feed mechanism Feed mechanism location diagram 2 - 18...
Page 34: Feed Mechanism
Basics of Assembly Feed mechanism Attachment of Feed module 1. Set the feed module 1 and the upper shaft bushing 2 to the positioning part of the rear cover assy. with the 2 washer EX tooth 5 3 and the 2 screws 1.
Page 35: Needle Bar, Presser Mechanism / Upper Shaft Mechanism
Basics of Assembly Needle bar, presser mechanism / Upper shaft mechanism Needle bar, presser mechanism / Upper shaft mechanism location diagram 2 - 20...
Page 36 Basics of Assembly Needle bar, presser mechanism / Upper shaft mechanism Attachment of Needle presser unit 1. Set the needle presser unit 1 to the positioning part of the inside of the rear cover with the 2 screws 1. 2. Tighten the screw 2 from the outside of the rear cover assy.. 3.
Page 37 Basics of Assembly Needle bar, presser mechanism / Upper shaft mechanism Attachment of Upper shaft assy 1. Pass the T belt 420-5GT-6 (timing belt) 2 and timing belt 372-2GT-6 (motor belt) 3 to the upper shaft assy. 1. 2. Set the thread take-up counter weight 5 to the needle bar crank rod assy. 3.
Page 38 Basics of Assembly Needle bar, presser mechanism / Upper shaft mechanism Phase matching of Upper shaft and lower shaft 1. Rotate the upper shaft 1 until the trench on the upper shaft pulley 2 is at the front. 2. Turn the lower shaft 3 to the point where the mark on the outer rotary hook 4 is at the front, the larger feed cam 5 is at the rear, and the hole on the lower shaft 6 is at the vertical.
Page 39: Electrical Parts And Motors
Basics of Assembly Electrical parts and motors Electrical parts and motors location diagram 2 - 24...
Page 40 Basics of Assembly Electrical parts and motors Attachment of Spring 1. Attach the spring 1. *Key point • Hang the section 2 of the spring 1 on the positioning hole of the upper shaft bearing presser 3, and hang the section 4 on the notch part 5 of the base plate assy.
Page 41 Basics of Assembly Electrical parts and motors Attachment of Foot controller jack assy 1. Insert the foot controller jack assy. 1 from the inside of the rear cover assy.. 2. Attach the jack nut 2 from the outside of the rear cover assy., and secure the foot controller jack assy.
Page 42: Special Instructions Of Wiring
Basics of Assembly Electrical parts and motors Attachment of Power supply unit 1. Set the power supply unit 1 to the rear cover assy. with the 2 screws 1 and the screw 2. 2. Connect the connector of the main motor assy. 2 to the power supply unit 3.
Page 43 Basics of Assembly Electrical parts and motors Attachment of Main PCB assy 1. Set the main PCB assy. 1 to the shutter cover 2, and then hang on the 3 hooks 3. *Key point • Check that the boss of the shutter cover 2 engaged with the positioning hole of the main PCB assy.
Page 44: Main Parts
Basics of Assembly Main parts Main parts location diagram 2 - 29...
Page 45: Attachment Of Front Cover Assy
Basics of Assembly Main parts Attachment of Front cover assy 1. Lower the presser lever 1. 2. Connect the connectors of the SSVR PCB assy. 2 and the operation PCB sub assy. 3 to the main PCB assy. 4, and hang the lead wire on the guide part of the shutter cover 5.
Page 46: Attachment Of Face Plate
Basics of Assembly Main parts Attachment of Face plate 1. Set the face plate 1 to the rear cover assy. with the screw 1. Torque Taptite, Cup P M4X20 0.78 – 1.18 N·m Attachment of Base cover 1. Set the base cover 1 to the machine with the 4 screws 1. Torque Taptite, Bind B M4X10...
Page 47: Attachment Of Accessory Table
Basics of Assembly Main parts Attachment of Accessory table 1. Attach the accessory table 1 to the machine. 2 - 32...
Page 48: Note: The Posting Pictures Are The "Square Shape Model
Application of Disassembly/Assembly In this chapter, explains the disassembly and assembly of the each module. When fix and replace the each module, use this chapter. Disassembly Main parts.........3 - 2 Electrical parts and motors .....3 - 17 Needle bar, presser mechanism / Upper shaft mechanism....3 - 19 Bobbin winder mechanism .....3 - 21 Feed and rotary module ....3 - 23...
Page 49: Disassembly Main Parts
Application of Disassembly Main parts Main parts location diagram 3 - 2...
Page 50: Disassembly Of Needle Plate B Assy
Application of Disassembly Main parts Disassembly of Needle plate B assy 1. Slide the slide button 2 to remove the needle plate cover 3 from the needle plate B assy. 1. 2. Remove the cutter cover 4 from the needle plate B assy. 1. 3.
Page 51: Disassembly Of Front Cover Assy
Application of Disassembly Main parts Disassembly of Front cover assy 2-1 Removal of Thread tension holder A assy 1. Remove the 2 screws 1, and then remove the thread tension holder A assy. 1. 2-1-1 Disassembly of Thread tension holder A assy 1.
Page 52: Removal Of Thread Take-Up Holder B
Application of Disassembly Main parts 2-2 Removal of Thread take-up holder B 1. Remove the screws 1, and then remove the thread take-up holder B 1. 2-2-1 Disassembly of Thread take-up holder B 1. Remove the screw 1, and then remove the thread catching spring case 2 from the thread take-up holder B 1.
Page 53: Removal Of Led Lamp Assy
Application of Disassembly Main parts 2-3 Removal of LED lamp assy 1. Disconnect the connector 2 of the LED lamp assy. 1 from the operation PCB sub assy.. 2. Remove the screw 1, and then remove the LED lamp assy. 1. 2-4 Removal of SSVR PCB assy 1.
Page 54: Removal Of Ss/Reverse/Np Buttons
Application of Disassembly Main parts 2-5 Removal of SS/Reverse/NP buttons 1. Remove the SS button 1, the reverse button 2 and the NP button 3. *Note • As for the SS button 1 and the NP button 3, it is not mounted by the model.
Page 55: Removal Of Operation Pcb Assy
Application of Disassembly Main parts 2-7 Removal of Operation PCB assy 2-7-A “Square shape model” equipped with LCD backlight 1. Disconnect the connector 1 of the single light guide assy. 2 from the operation PCB assy. 3. 2. Remove the 3 screws 1, and then remove the operation PCB assy. 3. 3.
Page 56: Curvy Shape Model" Equipped With Lcd Backlight
Application of Disassembly Main parts 2-7-C “Curvy shape model” equipped with LCD backlight 1. Disconnect the connector 1 of the single light guide assy. 2 from the operation PCB assy. 3. 2. Remove the 3 screws 1, and then remove the operation PCB assy. 3. 3.
Page 57: Removal Of Selecting/Manual Buttons
Application of Disassembly Main parts 2-8 Removal of Selecting/Manual buttons 1. Remove the 2 selecting button A 1, the 2 selecting button B 2, the 2 manual button A 3 and the 2 manual button B 4. *Note • As for the LCD backlight PCB assy., it is not mounted by the model.
Page 58: Removal Of Lcd
Application of Disassembly Main parts 2-9 Removal of LCD 2-9-A “Square shape model” equipped with LCD backlight 1. Remove the 2 screws 1, and then remove the single light guide assy. 1. 2. Remove the LCD 2. 2-9-B “Square shape model” not equipped with LCD backlight 1.
Page 59: Curvy Shape Model" Not Equipped With Lcd Backlight
Application of Disassembly Main parts 2-9-C “Curvy shape model” equipped with LCD backlight 1. Remove the screw 1, and then remove the single light guide assy. 1. 2. Remove the LCD 2. 2-9-D “Curvy shape model” not equipped with LCD backlight 1.
Page 60: Removal Of Decoration Cover
Application of Disassembly Main parts 2-10Removal of Decoration cover 1. Remove the 3 screws 1, and then remove the decoration cover 1. 2-11Removal of Front cover thread guard 1. Remove the front cover thread guard 1. 2-12Removal of Thread guide wire 1.
Page 61: Removal Of Base Plate Rubber (Front Cover Side)
Application of Disassembly Main parts 2-13Removal of Base plate rubber (Front cover side) 14. Remove the 2 base plate rubbers 1. Disassembly of Rear cover assy 3-1 Removal of Spool pin 1. Remove the hook 1, and then remove the spool pin supporter 2. 2.
Page 62: Removal Of Spool Pin Holder
Application of Disassembly Main parts 3-2 Removal of Spool pin holder 1. Remove the screw 1, and then remove the spool pin stop plate 1 and the spool holder 2. 3-3 Removal of Bobbin presser 1. Remove the screw 1, and then remove the bobbin presser 1. 2.
Page 63: Removal Of Thread Guide Plate Assy
Application of Disassembly Main parts 3-6 Removal of Thread guide plate assy 1. Remove the screw 1, and then remove the thread guide plate assy. 1. 3-7 Removal of Cutter cover assy 1. Remove the screw 1, and then remove the cutter cover assy. 1. 3-7-1 Disassembly of Cutter cover assy 1.
Page 64: Electrical Parts And Motors
Application of Disassembly Electrical parts and motors Electrical parts and motors location diagram 3 - 17...
Page 65: Disassembly Of Power Supply Unit
Application of Disassembly Electrical parts and motors Disassembly of Power supply unit 1. Remove the power lead wire assy . 1. 2. Remove the 2 screws 1, and then remove the insulation plate 2. 3. Remove the screw 2, and then remove the power plate spring 3 and the power supply PCB assy.
Page 66: Needle Bar, Presser Mechanism / Upper Shaft Mechanism
Application of Disassembly Needle bar, presser mechanism / Upper shaft mechanism Needle bar, presser mechanism / Upper shaft mechanism location diagram 3 - 19...
Page 67: Disassembly Of Tension Pulley Assy
Application of Disassembly Needle bar, presser mechanism / Upper shaft mechanism Disassembly of Tension pulley assy 1. Remove the screw 1, and then remove the tension pulley holder 2 from the tension pulley assy. 1. Disassembly of Upper shaft assy 1.
Page 68: Bobbin Winder Mechanism
Application of Disassembly Bobbin winder mechanism Bobbin winder mechanism location diagram 3 - 21...
Page 69: Removal Of Bobbin Base Assy
Application of Disassembly Bobbin winder mechanism Removal of Bobbin base assy 1. Remove the rubber ring 1 from the bobbin winder wheel. 2. Remove the bobbin base assy. 2 from the bobbin winder assy. 3. 1-1 Disassembly of Bobbin base assy 1.
Page 70: Feed And Rotary Module
Application of Disassembly Feed and rotary module Feed and rotary module location diagram 3 - 23...
Page 71: Removal Of Inner Rotary Hook Assy
Application of Disassembly Feed and rotary module Removal of Inner rotary hook assy 1. Remove the inner rotary hook assy. 1. Removal of Needle plate A assy 1. Remove the 2 screw needle plates 1, and then remove the needle plate A assy.
Page 72: Removal Of Spring
Application of Disassembly Feed and rotary module Removal of Spring 1. Remove the spring Removal of FPM holder sub assy 1. Remove the screw 1. 2. Remove the screw 2, and then remove spring 3. Remove the retaining ring 10, and then remove the FPM holder sub assy. 1 from the base plate assy..
Page 73: Removal Of Z Pulse Motor
Application of Disassembly Feed and rotary module Removal of Z pulse motor 1. Remove the 2 screws 1, and then remove the Z pulse motor 1 from the FPM holder assy. 2. 2. Remove the “lead wire assy, FPM-LE 3” from the Z pulse motor 1. Removal of Inner rotary hook bracket assy 1.
Page 74: Removal Of Feed Bar
Application of Disassembly Feed and rotary module Removal of Feed bar 1. Remove the retaining ring CS4, and then remove the feed bar 1 and the polyester slider 2 from the feed arm A assy.. Retaining ring CS4 Removal of Vertical adjuster screw assy 1.
Page 75: Removal Of Drop Knob
Application of Disassembly Feed and rotary module Removal of Drop knob 1. Remove the 3 retaining rings E3. 2. Pull the vertical feed shaft 1, and then remove the washer plain 2, the and the vertical lever 3. spring 3. Remove the retaining ring E3 from the vertical feed shaft 1. 4.
Page 76: Removal Of Shaft Supporter
Application of Disassembly Feed and rotary module Removal of Shaft supporter 1. Remove the 4 screws 1, and then remove the shaft supporter 1 and the feed arm supporter 2 from the base plate assy.. Removal of Feed supporting plate 1.
Page 77: Removal Of Upper Shaft Bushing
Application of Disassembly Feed and rotary module Removal of Upper shaft bushing Retaining ring E6 1. Remove the retaining ring E6, and then remove the upper shaft bushing 1 from the lower shaft assy. 2. Removal of Bushing presser B 1.
Page 78: Removal Of Lower Shaft Assy
Application of Disassembly Feed and rotary module Removal of Lower shaft assy 1. Remove the lower shaft assy. 1 from the base plate assy.. 2. Remove the 2 screws 1, and then remove the set collar 2. Removal of Feed arm A assy 1.
Page 79: Removal Of Feed Arm B Assy
Application of Disassembly Feed and rotary module Removal of Feed arm B assy Retaining ring CSTW-3.5 1. Remove the retaining ring CSTW-3.5, and then remove the feed arm B assy. 1 and the polyester slider 2 from the feed arm A assy. 3. Removal of Feed adjuster assy 1.
Page 80: Needle-Presser Module
Application of Disassembly Needle-presser module Needle-presser module location diagram 3 - 33...
Page 81: Removal Of Presser Feed Holder Assy
Application of Disassembly Needle-presser module Removal of Presser feed holder assy 1. Remove the Z foot 1. 2. Remove the screw 1, and then remove the presser feed holder assy. 2 from the presser bar 3. Removal of Thread slider guide 1.
Page 82: Removal Of Bh Switch Assy
Application of Disassembly Needle-presser module Removal of BH switch assy 1. Remove the screw 1, and then remove the BH switch assy. 1. Removal of Thread take-up lever link 1. Remove the screw 1, and then pull the take-up support shaft 1, and then remove the washer, spring 2 and the thread take-up lever link 3.
Page 83: Removal Of Needle Bar Crank Rod Assy
Application of Disassembly Needle-presser module Removal of Needle bar crank rod assy 1. Remove the needle bar crank rod assy. 1 from the needle bar block 2. 2. Remove the screw 1, and then remove the thread take-up lever 3 from the needle bar crank rod assy.
Page 84: Removal Of Shaft Assy
Application of Disassembly Needle-presser module Removal of Shaft assy 1. Remove the screw 1, and then remove the shaft assy. 1 from the base holder assy.. 2. Remove the needle holder block 2 from the shaft of the needle bar supporter assy.
Page 85: Removal Of Zigzag Adjusting Nut
Application of Disassembly Needle-presser module Removal of Zigzag adjusting nut 1. Remove the screw 1, and then remove the zigzag adjusting nut 1 from the needle bar supporter assy.. Removal of Needle holder shaft A 1. Remove the spring 2. Remove the screw 1, and then remove the plate 1 from the needle bar supporter assy..
Page 86: Removal Of Presser Foot Lifter
Application of Disassembly Needle-presser module Removal of Presser foot lifter Retaining ring E4 1. Remove the retaining ring E4, and then remove the presser foot lifter 1. Removal of Presser bar 1. Remove the screw 1, and then pull the presser bar 1 from the base holder assy., and then remove the spring 2 and the presser bar clamp 3.
Page 87: Removal Of Z Zigzag Lever Assy
Application of Disassembly Needle-presser module Removal of Z zigzag lever assy Retaining ring E4 1. Remove the Z lever cap 2 from the Z zigzag lever assy. 1. 2. Remove the retaining ring E4, and then remove the Z zigzag lever assy. 1 and the polyester slider 3.
Page 88: Removal Of Lock Nut
Application of Disassembly Needle-presser module Removal of Z pulse motor 1. Remove the 2 screws 1, and then remove the Z pulse motor 1 from the base holder assy.. 2. Remove the lead wire sub assy. 2 from the Z pulse motor 1. Removal of Lock nut 1.
Page 89: Assembly Main Parts
Application of Assembly Main parts Main parts location diagram 3 - 42...
Page 90: Assembly Of Rear Cover Assy
Application of Assembly Main parts Assembly of Rear cover assy 1-1 Attachment of Base plate rubber (Rear cover side) 1. Attach the base plate rubber 1 to the rear cover assy.. 2. Set the rubber cushion A 2 and the washer plain M 3.5 3 to the rear cover assy.
Page 91: Attachment Of Thread Guide Plate Assy
Application of Assembly Main parts 1-3 Attachment of Thread guide plate assy 1. Set the thread guide plate assy. 1 to the rear cover assy. with the screw 1. *Key point • Check that the align the notch part of the thread guide plate assy.
Page 92: Attachment Of Spool Pin Holder
Application of Assembly Main parts 1-7 Attachment of Spool pin holder 1. Set the spool holder 1 and spool pin stop plate 2 to the rear cover assy. with the screw 1. Torque Taptite, Cup B M4X14 0.78 – 1.18 N·m 3 - 45...
Page 93: Attachment Of Spool Pin
Application of Assembly Main parts 1-8 Attachment of Spool pin 1. Set the spool pin spring 1 to the spool pin 2. *Key point • Insert the hook part 3 of long side of the straight section of the spool pin spring 1 into the hole 4 of the spool pin 2. 2.
Page 94: Assembly Of Front Cover Assy
Application of Assembly Main parts Assembly of Front cover assy 2-1 Attachment of Base plate rubber (Front cover side) 2. Attach the 2 base plate rubbers 1 to the front cover assy.. 2-3 Attachment of Thread guide wire 1. Attach the thread guide wire 1 to the front cover assy.. 2-4 Attachment of Front cover thread guard 1.
Page 95: Attachment Of Decoration Cover
Application of Assembly Main parts 2-5 Attachment of Decoration cover 1. Set the decoration cover 1 to the front cover assy. with the 3 screws 1. Torque Taptite, Bind B M4X14 0.78 – 1.18 N·m 3 - 48...
Page 96: Attachment Of Lcd
Application of Assembly Main parts 2-6 Attachment of LCD 2-6-A “Square shape model” equipped with LCD backlight 1. Set the LCD 1 to the front cover assy.. 2. Set the single light guide assy. 2 to the front cover assy. with the 2 screws Torque Taptite, Bind B M3X10...
Page 97: Curvy Shape Model" Equipped With Lcd Backlight
Application of Assembly Main parts 2-6-C “Curvy shape model” equipped with LCD backlight 1. Set the LCD 1 to the front cover assy.. 2. Set the single light guide assy. 2 to the front cover assy. with the screw Torque Taptite, Bind B M3X10 0.39 –...
Page 98: Attachment Of Selecting/Manual Buttons
Application of Assembly Main parts 2-7 Attachment of Selecting/Manual buttons 1. Set the 2 selecting button A 1, the 2 selecting button B 2, the 2 manual button A 3 and the 2 manual button B 4 to the front cover assy.. *Note •...
Page 99: Attachment Of Operation Pcb Assy
Application of Assembly Main parts 2-8 Attachment of Operation PCB assy 2-8-A “Square shape model” equipped with LCD backlight 1. Connect the flat cable 1 of the LCD to the operation PCB assy. 2. 2. Set the operation PCB assy. 2 to the front cover assy. with the 3 screws *Key point •...
Page 100: Curvy Shape Model" Equipped With Lcd Backlight
Application of Assembly Main parts 2-8-C “Curvy shape model” equipped with LCD backlight 1. Connect the flat cable 1 of the LCD to the operation PCB assy. 2. 2. Set the operation PCB assy. 2 to the front cover assy. with the 3 screws *Key point •...
Page 101: Attachment Of Sv Keytop
Application of Assembly Main parts 2-9 Attachment of SV keytop 1. Set the SV joint plate 1 to the front cover assy.. 2. Set the SV keytop 2 to the front cover assy.. *Key point • Check that the 2 ribs of the SV keytop 2 engaged with the 2 positioning holes of the SV joint plate 1.
Page 102: Attachment Of Ssvr Pcb Assy
Application of Assembly Main parts 2-11Attachment of SSVR PCB assy 1. Set the SSVR PCB assy. 1 to the front cover assy. with the 2 screws 1. *Key point • Check that the speed volume 2 engaged with the groove of the SV joint plate 3.
Page 103: Attachment Of Thread Take-Up Holder B
Application of Assembly Main parts 2-13Attachment of Thread take-up holder B 1. Set the thread take-up holder B 1 to the front cover assy. with the screw Torque Screw, Bind M4X6 0.78 – 1.18 N·m 3 - 56...
Page 104: Assembly Of Thread Take-Up Holder B
Application of Assembly Main parts 2-13-1Assembly of Thread take-up holder B 1. Set the thread take up spring 1 to the thread catching spring case 2. *Key point • Insert the section 3 of the thread take up spring 1 into the hole 4 of the thread catching spring case 2.
Page 105: Attachment Of Thread Tension Holder A Assy
Application of Assembly Main parts 2-14Attachment of Thread tension holder A assy 1. Set the thread guide A assy. 1 to the front cover assy. with the 2 screws Torque Taptite, Bind B M4X14 0.78 – 1.18 N·m 2-14-1Assembly of Thread tension holder A assy 1.
Page 106: Assembly Of Needle Plate B Assy
Application of Assembly Main parts Assembly of Needle plate B assy 1. Remove the slide button 1 to the needle plate B assy. 2. *Key point • Check that hang the 2 hooks 3 on the needle plate B assy. 2.
Page 107: Electrical Parts And Motors
Application of Assembly Electrical parts and motors Electrical parts and motors location diagram 3 - 60...
Page 108: Assembly Of Main Motor Assy
Application of Assembly Electrical parts and motors Assembly of Main motor assy 1. Attach the main motor 2 to the motor holder 1 with the 2 screws 1 1. Attach the motor fan 3. Torque Screw, Pan (S/P washer) M3X8DB 0.59 –...
Page 109: Needle Bar, Presser Mechanism / Upper Shaft Mechanism
Application of Assembly Needle bar, presser mechanism / Upper shaft mechanism Needle bar, presser mechanism / Upper shaft mechanism location diagram 3 - 62...
Page 110: Attachment Of Plate Spring
Application of Assembly Needle bar, presser mechanism / Upper shaft mechanism Attachment of Plate spring 1. Set the adjusting plate 1 and the plate spring 2 in this order from the inside of the rear cover assy. with the 2 screws 1. 2.
Page 111: Bobbin Winder Mechanism
Application of Assembly Bobbin winder mechanism Bobbin winder mechanism location diagram 3 - 64...
Page 112: Attachment Of Bobbin Base Assy
Application of Assembly Bobbin winder mechanism Attachment of Bobbin base assy 1. Attach the bobbin base assy. 1 to the bobbin winder assy. 2. *Key point • Check that the 2 gullets 3 of the bobbin base assy. 1 engage with the 2 protrusions 4 of the bobbin winder.
Page 113: Feed And Rotary Module
Application of Assembly Feed and rotary module Feed and rotary module location diagram 3 - 66...
Page 114: Attachment Of Feed Adjuster Assy
Application of Assembly Feed and rotary module Attachment of Feed adjuster assy 1. Insert the polyester slider 2 and the spring into the shaft of the feed adjuster assy. 1. *Key point • Insert the spring starting with the side having the smaller spring diameter.
Page 115: Attachment Of Feed Arm B Assy
Application of Assembly Feed and rotary module Attachment of Feed arm B assy Retaining ring CSTW-3.5 1. Set the polyester slider 2 and the feed arm B assy. 3 to the shaft of the feed arm A assy. 1, and then attach the retaining ring CSTW-3.5. Lubricate the feed arm A assy.
Page 116: Attachment Of Lower Shaft Assy
Application of Assembly Feed and rotary module Attachment of Lower shaft assy 1. Insert the set collar 2 to the lower shaft assy. 1, and then tighten the 2 screws 1 temporarily. *Key point • Check that the cut surface 3 of the set collar 2 is the out side.
Page 117: Attachment Of Bushing Presser B
Application of Assembly Feed and rotary module Attachment of Bushing presser B 1. Insert the “washer, thrust 2” and the lower shaft bushing 3 into the lower shaft assy. 1. 2. Set the bushing presser B 4 to the base plate assy. with the 3 screws 1. 3.
Page 118: Attachment Of Timing Pulley D
Application of Assembly Feed and rotary module Attachment of Timing pulley D 1. Insert the timing pulley D 1 into the lower shaft assy. and then tighten the 2 screws 1 temporarily. *Key point • Insert it until the timing pulley D 1 hits the retaining ring E6. •...
Page 119: Attachment Of Shaft Supporter
Application of Assembly Feed and rotary module Attachment of Shaft supporter 1. Set the feed arm supporter 1 and the shaft supporter 2 to the base plate assy. with the 4 screws 1. Torque Screw, Pan (S/P washer) M4X8 1.37 – 1.57 N·m 3 - 72...
Page 120: Attachment Of Drop Knob
Application of Assembly Feed and rotary module Attachment of Drop knob 1. Set the drop knob 1 to the base plate assy. *Key point • Attach it while lifting the section 3 of the drop knob 1 to get over the boss part 2 of the base plate assy. 2.
Page 121: Attachment Of Feed Bar
Application of Assembly Feed and rotary module Attachment of Feed bar Retaining ring CS4 1. Insert the polyester slider 2 and the feed bar 3 into the shaft of the feed arm A assy. 1, and then attach the retaining ring CS4. *Key point •...
Page 122: Attachment Of Outer Rotary Hook Assy
Application of Assembly Feed and rotary module Attachment of Outer rotary hook assy 1. Insert the outer rotary hook shaft 1 into the spacer 2, the outer rotary hook assy. 3, the washer 6 4, the spacer 5 and the shaft supporter 6, and then attach it with the screw 1.
Page 123: Attachment Of Fpm Holder Sub Assy
Application of Assembly Feed and rotary module Attachment of FPM holder sub assy 1. Attach the rubber 2 from the FPM holder sub assy. 1. 2. Set the FPM holder sub assy. 1 to the shaft 3 of the base plate assy., and then attach the retaining ring 10.
Page 124: Alignment Of F Gear Teeth
Application of Assembly Feed and rotary module Alignment of F gear teeth 1. Turn the F pulse motor gear 1 clockwise until the stopper 2 of the F pulse motor gear 1 on it touches the rubber 3. 2. Align the teeth of the feed adjusting assy. 4 with the teeth of the F gear 5, and then mesh it and the F pulse motor gear 1.
Page 125: Attachment Of Feed Dog
Application of Assembly Feed and rotary module Attachment of Feed dog 1. Set the feed dog 1 to the feed bar 2, and then tighten the 2 screws 1 temporarily. *Key point • Fully tighten the screw 1 after performing "4 - 19 Adjustment : Front/back and left/right position of feed dog".
Page 126: Attachment Of Inner Rotary Hook Assy
Application of Assembly Feed and rotary module Attachment of Inner rotary hook assy 1. Set the inner rotary hook assy. 1 to the outer rotary hook assy. 2. 3 - 79...
Page 127: Needle-Presser Module
Application of Assembly Needle-presser module Needle-presser module location diagram 3 - 80...
Page 128: Attachment Of Shaft Bushing
Application of Assembly Needle-presser module Attachment of Shaft bushing 1. Set the shaft bushing 1 to the base holder assy. with the 2 screws 1. Torque Screw, Bind M3X6 0.78 – 1.18 N·m Attachment of Lock nut 1. Attach the lock nut 1 with the screw 1. *Key point •...
Page 129: Attachment Of Rubber
Application of Assembly Needle-presser module Attachment of Rubber 1. Attach the rubber 1 to the shaft 2 of the base holder assy.. Attachment of Z zigzag cam Retaining ring E3 1. Set the Z zigzag cam 1 to the shaft 2 of the base holder assy.. *Key point •...
Page 130: Attachment Of Z Zigzag Lever Assy
Application of Assembly Needle-presser module Attachment of Z zigzag lever assy 1. Attach the polyester slider 2 and the Z zigzag lever assy. 3 to the shaft 1 of the base holder assy., and then attach the retaining ring E4. *Key point •...
Page 131: Attachment Of Thread Release Lever
Application of Assembly Needle-presser module Attachment of Thread release lever 1. Set the thread release lever 2 and the spring to the shaft 1 of the base holder assy., and then attach the retaining ring CS4. *Key point • Check that the hook of the spring is the upper side, when set it as shown in the right figure.
Page 132: Attachment Of Presser Foot Lifter
Application of Assembly Needle-presser module Attachment of Presser foot lifter Retaining ring E4 1. Set the presser foot lifter 1 to the shaft 2 of the base holder assy., and then attach the retaining ring E4. *Key point • Push the presser bar clamp 3 to the upper side, and then attach it while pushing the bottom side of the thread release lever 4.
Page 133: Attachment Of Needle Holder Shaft A
Application of Assembly Needle-presser module Attachment of Needle holder shaft A 1. Insert the needle holder shaft A 1 to the upper side hole of the needle bar supporter assy., and then insert the shaft 2 into the needle bar supporter assy., the needle holder shaft A 1 and the needle bar supporter assy..
Page 134: Attachment Of Threader Hook Assembly
Application of Assembly Needle-presser module Attachment of Threader hook assembly 1. Insert the threader hook assembly 1 into the shaft of the needle bar supporter assy. 2, and then hang on the hook 3. Attachment of Needle bar supporter assy 1.
Page 135: Attachment Of Shaft Assy
Application of Assembly Needle-presser module Attachment of Shaft assy 1. Attach the needle holder block 1 to the needle roller 2 of the needle bar supporter assy.. *Key point • Flat surface of the needle holder block 1 is the upper side. 2.
Page 136: Attachment Of Needle Bar Assy. N
Application of Assembly Needle-presser module Attachment of Needle bar assy. N 1. Attach the screw 1 to the needle bar block 1. 2. Insert the needle bar assy. N 2 into the needle bar supporter assy., the needle bar block 3, the needle thread block 4 and the needle bar supporter assy.
Page 137: Attachment Of Needle Bar Crank Rod Assy
Application of Assembly Needle-presser module Attachment of Needle bar crank rod assy 1. Set the thread take-up lever 1 to the needle bar crank rod assy. 2 with the screw 1. *Key point • The screw 1 is reverse threaded. 2.
Page 138: Attachment Of Bh Switch Assy
Application of Assembly Needle-presser module Attachment of BH switch assy 1. Set the BH switch assy. 1 to the base holder assy. with the screw 1. *Key point • Check that the boss part 3 of the BH switch holder assy. engaged with the positioning hole 2 of the BH switch assy.
Page 139: Attachment Of Presser Feed Holder Assy
Application of Assembly Needle-presser module Attachment of Presser feed holder assy 1. Set the presser feed holder assy. 1 to the presser bar 2 with the screw 1. 2. Set the Z foot 3 to the presser feed holder assy. 1. Torque Screw 3.57...
Page 140: Adjustment
Adjustment Starting test mode/Starting and stopping operation ... 4 - 2 Timing belt tension........4 - 4 Motor belt tension ........4 - 5 Upper thread tension ......4 - 6 Left base line needle drop....... 4 - 7 Rotary hook unit position ......4 - 8 Needle clearance left/right ......
Page 141: Starting Test Mode/Starting And Stopping Operation
Test Mode Starting test mode/Starting and stopping operation 1. How to start test mode • Turn on the power while pressing (Reverse/reinforcement stitch button), and press (Stitch selection key) in the state that continued pressing (Reverse/reinforcement stitch button) within one second, four beeps sound, and then test mode starts.
Page 142 Adjustment Starting test mode/Starting and stopping operation 4. Test modes (used for adjustments) Z (zigzag) F (feed) Ref. Mode Operating speed Used adjustment operations operations page Left base line 4 - 7 needle drop Rotary hook unit 4 - 8 position Switches base line with each Needle clearance...
Page 143: Timing Belt Tension
Adjustment Timing belt tension [Adjustment standard] The belt deflection must be 4 to 5 mm when pushing the center of the timing belt with a force of 1.96N (200g). [Adjustment procedure] 1. Remove the front cover. 2. Loosen the screw (screw pan (S/P washer) M4 x 8) of the tension pulley assy.. 3.
Page 144: Motor Belt Tension
Adjustment Motor belt tension [Adjustment standard] The belt deflection must be 3 to 4 mm when pushing the center of the motor belt with a force of 0.98N (100g). [Adjustment procedure] 1. Remove the front cover. 2. Remove the power supply unit. 3.
Page 145: Upper Thread Tension
Adjustment Upper thread tension [Adjustment standard] Pass the schappe spun thread #60 through thread guide path, and lower the presser lever, and pull the thread down slowly with the tension gauge, then adjust the thread tension must be 0.32 to 0.37N (33 to 38g). [Adjustment procedure] 1.
Page 146: Left Base Line Needle Drop
Adjustment Left base line needle drop [Adjustment standard] The needle top (left base line) must drop in the right side of “V” groove on the needle plate A. [Adjustment procedure] 1. Remove the presser foot. 2. Start the test mode. 3.
Page 147: Rotary Hook Unit Position
Adjustment Rotary hook unit position [Adjustment standard] The needle top (left base line) must drop in the right side of “V” groove on the needle plate A. [Adjustment procedure] 1. Remove the presser foot. 2. Start the test mode. 3. Select the pattern number "02" (3-point needle drop mode). 4.
Page 148: Needle Clearance Left/Right
Adjustment Needle clearance left/right [Adjustment standard] The clearance between the needle top and the outer rotary hook point must be the same at the base line of both left and right. [Adjustment procedure] 1. Remove the presser foot, the needle plate B and the needle plate A, then remove the inner rotary hook. 2.
Page 149: Needle Bar Rising
Adjustment Needle bar rising [Adjustment standard] The right edge of the needle must align with the rotary hook point when the needle bar raised 2.9 to 3.3mm up from its lowest position. [Adjustment procedure] 1. Remove the presser foot, the needle plate B and the needle plate A, then remove the inner rotary hook. 2.
Page 150: Needle Bar Height
Adjustment Needle bar height [Adjustment standard] When turn the pulley by hand until the right edge of the needle aligns with the outer rotary hook point, the distance between the top edge of the needle eye and the bottom edge of the outer rotary hook point must be 1.0 to 1.4mm. [Adjustment procedure] 1.
Page 151: Clearance Between Needle And Rotary Hook Point
Adjustment Clearance between needle and rotary hook point [Adjustment standard] The clearance between the scarf of needle and the outer rotary hook point (front/back) must be 0.2mm or less on the left base line. [Adjustment procedure] 1. Remove the presser foot, the needle plate B and the needle plate A, then remove the inner rotary hook. 2.
Page 152: Needle Threader
Adjustment Needle threader [Adjustment standard] When passing the hook into the needle eye, the clearance between the top edge of the hook and the top edge of the needle eye must be 0 to 0.1mm. [Adjustment procedure] 1. Remove the face plate. 2.
Page 153: Presser Bar Height And Parallelism
Adjustment Presser bar height and parallelism [Adjustment standard] • The clearance between the needle plate A and bottom surface of the presser foot must be 6.0 to 6.5mm. • The presser foot must parallel with the feed dog hole of needle plate A. [Adjustment procedure] 1.
Page 154: Feed Forward/Backward
Adjustment Feed forward/backward [Adjustment standard] In the test mode “05”, sewing 100 forward stitches, and 100 reverse stitches without thread, the forward feed length must be 0 to 10mm longer than the backward feed length. [Adjustment procedure] 1. Start the test mode. 2.
Page 155: Bobbin Winder
Adjustment Bobbin winder [Adjustment standard] • No uneven bobbin winding. • The target for the bobbin winding quantity must be filling 80 to 90% of the diameter. [Adjustment procedure] 1. Loosen the screw (screw pan (S/P washer) M3 x 8) of the thread guide assy.. 2.
Page 156: Bh Lever Switch Position
Adjustment BH lever switch position [Adjustment standard] • BH 0 touches the BH 1 in the state that the clearance between the BH presser foot A and the BH presser foot B is 0.5mm. • BH 0 does not touch the BH 1 in the state that the clearance between the BH presser foot A and the BH presser foot B is 1.5mm.
Page 157: Needle And Presser Foot Front/Back Position
Adjustment Needle and presser foot front/back position [Adjustment standard] The needle top must drop in the center position (front/back) of the presser foot hole. [Adjustment procedure] 1. Attach the J foot, and lower the presser lever. 2. Turn the pulley by hand, and drop the needle top into the presser foot hole. 3.
Page 158: Front/Back And Left/Right Position Of Feed Dog
Adjustment Front/back and left/right position of feed dog [Adjustment standard] The clearance (front/back) between the forward edge of the feed dog middle tooth and the feed dog hole of the needle plate A must be 3.2 to 3.8mm, and the both clearance (left/right) between the feed dog and the feed dog hole must be equal.
Page 159: Feed Dog Height
Adjustment Feed dog height [Adjustment standard] When the feed dog is its highest position, the feed dog height from the needle plate A surface must be 0.9 to 1.1mm. [Adjustment procedure] 1. Turn the pulley by hand to raise the feed dog to its highest position. 2.
Page 160: Inner Rotary Hook Bracket Position
Adjustment Inner rotary hook bracket position [Adjustment standard] The clearance (overlap) between the inner rotary hook point and the bracket spring must be 2.3 to 2.5mm. [Adjustment procedure] 1. Remove the front cover. 2. Set the inner rotary hook assy. in the outer rotary hook. 3.
Page 161: Inner Rotary Hook Assy. (Lower Thread) Tension
Adjustment Inner rotary hook assy. (lower thread) tension [Adjustment standard] Inner rotary hook assy. (lower thread) tension must be 0.1 to 0.12N (10 to 12g). [Adjustment procedure] 1. Set the bobbin (the schappe spun thread #60) in the inner rotary hook assy., and pass the thread. 2.
Page 162: Failure Investigation For Electronic Parts
Failure Investigation for Electronic Parts * Perform resistance measurements after turning off the power, and detaching the connectors to be measured from the PCB. Error message list ............5 - 2 Error message is displayed ..........5 - 3 Power does not come on..........5 - 7 Pulse motor does not return to initial position ....
Page 163: Error Message List
Failure Investigation Error message list for Electronic Parts Error message Probable cause (5 - 3) Rotation failure in main motor Button pressed continually with power ON. (5 - 3) (Operation switch) (5 - 4) Key pressed continually with power ON. (Setting mode switch) (5 - 4) Foot controller disconnection...
Page 164: Error Message Is Displayed
Failure Investigation Error message is displayed for Electronic Parts "F1" is displayed. After the power supply PCB assy. is replaced, start the test mode and Replace the main PCB assy. select the test mode "10" and press the reverse/reinforcement stitch Replace the power supply button.
Page 165 Failure Investigation Error message is displayed for Electronic Parts "F3" is displayed. Is one of the stitch selection key, Replace the operation PCB assy. stitch length adjustment key and stitch width adjustment key stuck in Replace the main PCB assy. a pressed down condition? Release the key that is stuck.
Page 166 Failure Investigation Error message is displayed for Electronic Parts "F5" is displayed. Is the main PCB assy. attached Attach the main PCB assy. correctly? correctly. Is the timing shutter of the upper Clean the timing shutter. shaft dirty? Replace the main PCB assy. "F7"...
Page 167 Failure Investigation Error message is displayed for Electronic Parts "F8" is displayed. When the power lead wire assy. is disconnected from the power supply PCB assy. connector (CN201), is Replace the power supply the voltage between pin 2 and 3, 4 PCB assy.
Page 168: Power Does Not Come On
Failure Investigation Power does not come on for Electronic Parts When the power is turned on, nothing appears on the LCD and the buzzer does not sound. * In case of models not equipped with the start/stop button. When the power is turned on, nothing appears on the LCD. Is the power supply cord free from Connect the power supply damage and connected correctly?
Page 169: Pulse Motor Does Not Return To Initial Position
Failure Investigation Pulse motor does not return to initial position for Electronic Parts When the power is turned ON, the pulse motor does not return to the initial position. • When needle is up : Z pulse motor returns to it's initial position. •...
Page 170: Pattern Cannot Be Selected
Failure Investigation Pattern cannot be selected for Electronic Parts Pattern cannot be selected. Replace the operation PCB assy. Replace the main PCB assy. 5 - 9...
Page 171: Main Motor Does Not Rotate
Failure Investigation Main motor does not rotate for Electronic Parts Main motor does not rotate. Attach the upper shaft assy. Does the pulley rotate smoothly? correctly. Is the main motor connector connected to the power PCB assy. (CN401) Connect it correctly. correctly? Is the main motor resistance 2-5Ω...
Page 172 Failure Investigation Main motor does not rotate for Electronic Parts From previous page Is the presser lever down? Lower the presser lever. Is the resistance value of the PF switch assy. normal? • Switch pressed : 1Ω or less • Switch released : more than 1MΩ Replace the PF switch assy.
Page 173: Main Motor Rotation Is Not Normal
Failure Investigation Main motor rotation is not normal for Electronic Parts The rotation of the main motor is unstable. The rotation speed does not reach maximum. The rotation speed can not be adjusted. Is the main motor connector connected to the power supply PCB assy.
Page 174: Pattern Cannot Be Sewn Correctly
Failure Investigation Pattern cannot be sewn correctly for Electronic Parts Pattern cannot be sewn correctly. With the power OFF, can you move the Attach the needle-presser needle bar to the left and right by hand module correctly. lightly? Is the resistance between pin 1 and 2, 3 and 4 on the Z and F pulse Replace the pulse motor.
Page 175: Button Hole Cannot Be Sewn Correctly
Failure Investigation Button hole cannot be sewn correctly for Electronic Parts Button hole cannot be sewn correctly. Is the appropriate presser foot Attach the appropriate being used? presser foot. Is the resistance between pin 4 Adjust the BH lever. and 5 on the BH lever switch connector normal? •...
Page 176: Operation Button Does Not Work
Failure Investigation Operation button does not work for Electronic Parts Operation button does not work. Is the resistance for the start/stop button, reverse/reinforcement stitch button and needle position button normal? * In case of models not equipped with the start/stop button. Replace the SSVR PCB assy.
Page 177: Does Not Operate When The Foot Controller Is Used
Failure Investigation Does not operate when the foot controller is used for Electronic Parts Does not operate when the foot controller is used. Is the resistance between pin 2 and 3 on the Replace the foot controller foot controller jack assy. connector normal? jack assy.
Page 178: Bobbin Thread Cannot Be Wound On The Bobbin
Failure Investigation Bobbin thread cannot be wound on the bobbin for Electronic Parts Bobbin thread cannot be wound on the bobbin. Attach the bobbin winder Is the bobbin winder assy. attached assy. correctly. correctly? Is the main PCB assy. attached Attach the main PCB assy.
Page 179: Led Lamp Does Not Light
Failure Investigation LED lamp does not light for Electronic Parts LED lamp does not light. Are the operation PCB assy. and LED Connect it correctly. lamp assy. connected correctly? In case of models equipped with the LCD back light, is the LCD (back light Connect it correctly.
Page 180: Lcd Is Not Normal
Failure Investigation LCD is not normal for Electronic Parts LCD is not normal. Is the FPC of the LCD connected to the Connect it correctly. operation PCB assy. correctly? Are the main PCB assy. and the operation Connect it correctly. PCB assy.
Page 181: Buzzer Does Not Sound
Failure Investigation Buzzer does not sound for Electronic Parts When the power is turned on or the pattern is selected, the buzzer does not sound. * In case of the models not equipped with the start/stop button, the buzzer does not sound. When the power supply PCB assy.
Page 182: Special Instructions Of Wiring
Special Instructions of Wiring Needle bar / Presser module wiring..6 - 2 Power supply unit wiring ......6 - 6 Front cover wiring ........6 - 9 6 - 1...
Page 183 Special Instructions of Wiring Needle bar / Presser module wiring 1. Wiring of BH switch assy. Hang the lead wires on the hooks. Pass a band through the hole of base holder and secure the lead wires with the band. Hang the ground lead wire on the hooks.
Page 184 Special Instructions of Wiring Needle bar / Presser module wiring 2. Wiring on upper side of needle bar / presser module Pass a band through the hole of base holder and secure the lead wires with the band. All lead wires should pass back side of the module.
Page 185 Special Instructions of Wiring Needle bar / Presser module wiring 3. Wiring on front side of needle bar / presser module 4. Wiring on left upper side of main PCB assy. Lead wires should Hang the lead wires pass under the ribs. on the hook.
Page 186 Special Instructions of Wiring Needle bar / Presser module wiring 5. Wiring on right upper side of main PCB assy. Hang the ground lead wire on the hooks. 6. Wiring on front side of main PCB assy. Secure the ground lead wire terminal in the downward.
Page 187 Special Instructions of Wiring Power supply unit wiring 1. Wiring of foot controller jack assy. Pass the lead wires of foot controller jack assy. between the main motor and cover. 2. Wiring on lower side of power supply unit Surely insert the connector. 6 - 6...
Page 188 Special Instructions of Wiring Power supply unit wiring 3. Wiring on upper side of power supply unit Hang the lead wires on the hook. 4. Wiring on left side of power supply unit Hang the lead wires on the hooks. 6 - 7...
Page 189 Special Instructions of Wiring Power supply unit wiring 5. Wiring of power supply unit and main PCB assy. Wind the lead wires around the rib once. Hang the lead wires on the hooks. Hang the ferrite core that is passed the lead wires on the hook.
Page 190 Special Instructions of Wiring Front cover wiring 1. Wiring of LED lamp assy. 6 - 9...
Page 191 Special Instructions of Wiring Front cover wiring 2. Wiring of operation PCB assy. 2-1. In case of “Square shape model” Models equipped with LCD backlight Connector of LED lamp Connector of LCD backlight Models not equipped with LCD backlight Connector of LED lamp 6 - 10...
Page 192 Special Instructions of Wiring Front cover wiring 2-2. In case of “Square shape model” Mounted with LCD backlight model only Secure the lead Pass the lead wires with a band. wires through the groove of the rib. Secure the lead wires with a band at the rib section.
Page 193 Special Instructions of Wiring Front cover wiring 2-3. In case of “Curvy shape model” Models equipped with LCD backlight Connector of LED lamp Connector of LCD backlight Models not equipped with LCD backlight Connector of LED lamp 6 - 12...
Page 194 Special Instructions of Wiring Front cover wiring 2-4. In case of “Curvy shape model” Secure the lead wires with the bands. Mounted with LCD backlight model only Secure the lead wires Secure the lead wires with a band at the rib with a band at the base of section.
Page 195 Special Instructions of Wiring Front cover wiring 3. Wiring of front cover and main PCB Rear cover Front cover Hang the front cover lead wires on the hooks. 6 - 14...

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Brother CE-5500PRW Service Manual

Table of Contents

2 Basics of Disassembly/Assembly

3 Application of Disassembly/Assembly

4 Adjustment

5 Failure Investigation for Electronic Parts

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Summary of Contents for Brother CE-5500PRW