Page 4 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. Disassembly ..................2 - 1 Main parts ......................2 - 2 Embroidery removal ..........................2 - 3 Top cover removal ..........................2 - 3...
Page 5 Thread release holder assy. F removal .....................2 - 21 PF-F SW assy. removal ........................2 - 21 Thread guide shutter removal ......................2 - 21 Tension releaser link removal ......................2 - 22 Plate assembly removal ........................2 - 22 Thread guide removal ........................2 - 22 Thread tension gear removal ......................2 - 22 AT pulse motor removal ........................2 - 23 Tension disk removal ........................2 - 23...
Page 6 Presser foot lifter removal ........................2 - 41 Thread take-up assy. removal ......................2 - 41 Thread take-up counter weight removal ..................2 - 42 Presser bar removal ..........................2 - 42 Thread take-up lever link removal ....................2 - 43 Shaft bushing assembly removal .....................2 - 43 Feed module ....................2 - 44 Needle plate A removal ........................2 - 45 Needle plate A disassembly ......................2 - 45...
Page 7 Y carriage unit removal ........................2 - 62 Y carriage ASSY disassembly ......................2 - 63 Y pulse motor assembly removal .....................2 - 63 Y tension pulley assembly removal ....................2 - 64 Y tension pulley ASSY disassembly ....................2 - 64 Y driving gear pulley assembly removal ..................2 - 65 Y sensor PCB assembly removal .....................2 - 65 3.
Page 8 Thread tension assy. attachment ......................3 - 23 Electrical parts and motors ................3 - 24 Belt guard attachment ........................3 - 25 NP PCB assy. attachment ........................3 - 25 Motor PCB assy. attachment ......................3 - 25 Assembly of main motor assembly ....................3 - 25 Main motor assembly attachment ....................3 - 26 Motor fan attachment ........................3 - 26 Base plate rubber attachment ......................3 - 26...
Page 9 Needle bar assembly ........................3 - 48 Needle bar assembly attachment ......................3 - 49 Lock nut attachment .........................3 - 49 Spring (for needle bar supporter assy.) attachment .................3 - 50 Gurd plate attachment ........................3 - 50 Adjusting plate ASSY assembly .....................3 - 50 Adjusting plate assy.
Page 10 X belt presser removal ........................3 - 74 EMB relay PCB assembly attachment .....................3 - 74 Groove cover attachment .........................3 - 74 Rubber cushion and rubber cushion cover attachment ..............3 - 75 Lock release lever ASSY assembly ....................3 - 75 Lock release lever assembly attachment ..................3 - 75 ES base cover unit attachment ......................3 - 76 Lead wire assembly (EMB unit FCOMB) attachment ..............3 - 76 Groove cover attachment .........................3 - 77...
Page 11 5. Failure Investigation for Electronic Parts .........5 - 1 Error message list ....................5 - 2 The power does not come on ................5 - 3 Pulse motors do not return to starting position ..........5 - 5 The touch panel does not work ................5 - 6 LCD backlight does not come on ...............5 - 7 Main motor does not turn ...................5 - 8 Main motor rotation abnormal ................5 - 10...
Page 12: 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 13: Main Mechanisms
Outline of Mechanism Main Mechanisms Sewing machine Bobbin winder mechanism Thread tension mechanism Needle ber / Presser foot mechanism Upper shaft mechanism Thread cutting Lower shaft mechanism mechanism Rotary hook mechanism Embroidery unit Y guide shaft Y belt X driving gear X guide shaft Y senser PCB X senser PCB...
Page 14: Driveline
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 Needle bar...
Page 15: Positions Of Electronic Components
Outline of Mechanism Positions of electronic components Upper thread sensor PCB SS PCB BW SW PF SW AT pulse motor Power supply unit NP PCB LCD unit / Touch pannel LED LAMP-FL Main motor Power SW LED LAMP-FR Motor PCB Main PCB Inlet C pulse motor...
Page 16: Control System Block Diagram
Outline of Mechanism Control system block diagram AC cord Inlet Power Supply PCB Switching power supply Main motor drive circuit Main motor LED lamp L NP PCB NP sensor x3 Speed sensor +26V Motor PCB BWSW EEPROM 8Kbit Upper thread sensor PFSW Bobbin thread sensor PM driver...
Page 17: 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 18: Disassembly
Disassembly Main unit Main parts........2 - 2 Electrical parts and motors .... 2 - 12 Thread tension mechanism ... 2 - 18 Bobbin winder mechanism .... 2 - 25 Rotary hook drive mechanism / Feed and bobbin mechanism / Cutter assy.
Page 19 Main unit Main parts location diagram 2 - 2...
Page 20: Main Parts
Main unit Main parts Embroidery removal 1. Remove the enbroidery 1. *Key point • Move the lock lever 2 of the back, and then remove the embroidery 1. Top cover removal 1. Remove top cover 1. *Key point • Push the attached part toward the inside and remove. 2 - 3...
Page 21 Main unit Main parts Face plate removal and disassembly 1. Remove the screw 1, and then remove the face plate assembly 1. 2. Remove the needle thread lever knob 2. 3. Remove the screw 2, and then remove the face plate cutter holder 3 and the NT lower thread cutter 4.
Page 22 Main unit Main parts Needle plate B removal and disassembly 1. Remove the needle plate cover 1. 2. Remove the needle plate B 2. 3. Remove the cutter cover 3. 4. Remove the spring plate 4 from the cutter cover 3, and remove the NT lower thread cutter 6.
Page 23 Main unit Main parts Front cover removal 1. Remove the screw 1 and the 3 screws 2. 2. Remove the hook 1 on the front cover, and then remove the hook 2 by pushing the hook attachment section 2 on the rear cover. *Key point •...
Page 24 Main unit Main parts Board plate A removal 1. Remove the 2 screws 1, and then remove the board plate A 1. Card cover removal 1. Remove the screw 1, and then remove the card cover 1. *Key point • Press the 2 hooks on the card cover 1 from the inside of the front cover.
Page 25 Main unit Main parts Main PCB holder assembly removal 1. Remove the 8 screws 1, and then remove the main PCB holder assembly 2. Remove the 2 hooks on the main PCB holder assembly 1, and then remove the light plate assembly 2. Touch panel assembly removal 1.
Page 26 Main unit Main parts Front cover disassembly (bobbin winder guide assembly removal) 1. Remove the screw 1, and remove the bobbin winder guide assembly 1. Front cover disassembly (spool pin holder removal) 1. Remove the screws 1 and 2, and then remove the thread bobbin cover 1, spool pin holder assembly 2, and spool pin 3.
Page 27 Main unit Main parts Front cover disassembly (SS-VR PCB assembly removal) 1. Remove the screw 1, and then remove the lamp holder supporter 1. 2. Remove the 4 screws 2, and then remove the insulation sheet 2 and the SS-VR PCB assembly 3. 3.
Page 28 Main unit Main parts Rear cover removal 1. Remove the screw 1. 2. Lower the presser lever 1, and then remove section 2, being careful to prevent the presser lever 1 being caught in section 2. 3. Remove section 3, being careful to prevent the switch 4 of the power supply unit being caught in section 3.
Page 29 Main unit Electrical parts and motors location diagram 2 - 12...
Page 30 Main unit Electrical parts and motors Power supply unit F removal 1. Unplug all of the connectors on the motor PCB assy. 1. 2. Remove the main motor connector 2. 3. Disconnect the connector 3 of the inlet assembly lead wire. 4.
Page 31 Main unit Electrical parts and motors Connector holder assembly removal and disassembly 1. Remove the 2 screws 1, and then remove the connector holder assembly 2. Remove the 2 retaining rings (E2), and then remove the lead wire assembly (main body FCOMB) 2, ES pin F-A 3, and ES pin F-B 4 from the connector holder assembly 1.
Page 32: Electrical Parts And Motors
Main unit Electrical parts and motors Timing belt (motor belt) removal 1. Remove the timing belt 1. Motor fan removal 1. Remove the motor fan 1. NOTE •Be careful not to bend the fins of the motor fan 1. Main motor assembly removal 1.
Page 33 Main unit Electrical parts and motors Main motor assembly disassembly 1. Remove the 2 screws 1, and remove the main motor assembly 1 and the motor spacer presser 2. 2. Remove the fender rubber 3 from the motor holder 4. 3.
Page 34 Main unit Electrical parts and motors NP PCB assy. removal 3, 4 1. Remove the 3 screws 1, and remove the PCB holder 1. 2. Remove the 2 screws 2, and remove the coating clip 2, the insulation sheet 3 and the NP PCB assy 4 from the PCB holder 1. Belt guard removal 1.
Page 35 Main unit Thread tension mechanism location diagram 2 - 18...
Page 36 Main unit Thread tension mechanism Thread tension assy removal 1. Remove the spring 2. Remove the 2 screws 1, and remove the thread tension assy 1. Upper thread PCB unit removal 1. Remove the screw 1, and then remove the upper thread PCB unit 1. Upper thread PCB unit disassembly 1.
Page 37 Main unit Thread tension mechanism Thread guide removal 1. Remove the 2 screws 1, and remove the thread guide assy. 1. 2. Remove the screw 2, and remove the thread guide cover 2. Thread guide cover removal 1. Remove the thread guide cover 1. *Key point •...
Page 38: Thread Release Holder Assy. F Removal
Main unit Thread tension mechanism Thread release holder assy. F removal 1. Remove the 2 screws 1, and remove the thread release holder assy. 1. PF-F SW assy. removal 1. Remove the screw 1, and remove the PF-F SW assy 1 and the presser switch holder 2.
Page 39: Tension Releaser Link Removal
Main unit Thread tension mechanism Tension releaser link removal 1. Remove the retaining ring E3 and remove the tension releaser link 1. Retaining ring E3 Plate assembly removal 1. Remove the screw 1, and remove the plate assembly 1. Thread guide removal 1.
Page 40: At Pulse Motor Removal
Main unit Thread tension mechanism AT pulse motor removal 1. Remove the 2 screws 1, and remove the AT pulse motor 1. Tension disk removal 1. Remove the screw 1, and remove the initial adjustment plate 1. 2. Remove the rubber 2 from the initial adjustment plate 1. 3.
Page 41: Thread Guide Wire Removal
Main unit Thread tension mechanism Thread guide wire removal 1. Remove the screw 1, and remove the thread guide wire 1 and the washer 2 - 24...
Page 42: Bobbin Winder Mechanism
Main unit Bobbin winder mechanism location diagram 2 - 25...
Page 43: Bobbin Winder Cover Removal
Main unit Bobbin winder mechanism Bobbin winder cover removal 1. Remove the bobbin base 1. 2. Remove the screw 1, and remove the bobbin winder cover 2. Bobbin base disassembly 1. Remove the bobbin thread cutter holder 1. 2. Remove the 2 NT lower thread cutters 2. Bobbin presser removal 1.
Page 44: Bw Holder Supporter Removal
Main unit Bobbin winder mechanism BW holder supporter removal 1. Remove the screw 1, and remove the BW holder supporter 1. BW-F SW assy. removal 1. Remove the BW-F SW assy 1. *Key point • Open the SW adjust plate 2 clip and remove it. BW shaft holder assembly removal 1.
Page 45: Rotary Hook Drive Mechanism / Feed And Bobbin Mechanism / Cutter Assy. Mechanism
Main unit Rotary hook drive mechanism / Feed and bobbin mechanism / Cutter assy. mechanism location diagram 2 - 28...
Page 46: Coating Clip Removal
Rotary hook drive mechanism / Feed and bobbin Main unit mechanism / Cutter assy. mechanism Coating clip removal 1. Remove the screw 1, and then remove the coating clip 1. Thread cutter module removal 1. Remove the 2 screws 1, and then remove the free arm plate 1. 2.
Page 47: Lower Shaft A Assy. Removal
Rotary hook drive mechanism / Feed and bobbin Main unit mechanism / Cutter assy. mechanism Lower shaft A assy. removal 1 (2 screws) 1. Remove the 2 screws 1, and remove the 2 bushing pressers 1. 2. Remove the lower shaft A assy 2. Joint removal 1.
Page 48: Needle Bar, Presser Mechanism / Upper Shaft Mechanism
Main unit Needle bar, presser mechanism / Upper shaft mechanism location diagram 2 - 31...
Page 49: Upper Shaft Removal
Main unit Needle bar, presser mechanism / Upper shaft mechanism Upper shaft removal 1(x 4), 2(x 2) 1. Remove the 4 screws 1 and the 2 screws 2, and slide the fixed joint 1 to the right. 2. Remove the screw 3, and detach the bushing presser 2. 3.
Page 50: Needle-Presser Module Removal
Main unit Needle bar, presser mechanism / Upper shaft mechanism Needle-presser module removal 1. Remove the screw 1. 2. Remove the 4 screws 2, and detach the presser plate A 1 and the presser plate B 2. 3. Remove the needle-presser module. 4.
Page 51: Plate Spring Removal
Main unit Needle bar, presser mechanism / Upper shaft mechanism Plate spring removal *Rear view 1. Remove the adjusting screw 1. 2. Remove the 2 screws 1, and remove the plate spring 2. *Front view 2 - 34...
Page 52: Needle-Presser Module
Modules Needle-presser module breakout diagram 2 - 35...
Page 53: Quilting Foot Removal
Modules Needle-presser module Quilting foot removal 1. Remove the screw 1, and detach the quilting foot 1. Adjusting plate assy. removal 1. Remove the 2 screws 1, and remove the adjusting plate assy 1. Adjusting plate ASSY disassembly 1. Remove the retaining ring E3, and then remove the tension releaser C 2 from the adjusting plate assembly 1.
Page 54: Spring Removal
Modules Needle-presser module Spring removal 1. Remove the spring Lock nut removal 1. Remove the lock nut 1 and the screw 1. Needle bar assy. removal 1. Remove the 2 screws 1. 2. Remove the needle bar 1 and the needle thread block 2. Needle bar assy.
Page 55: Needle Holder Guide Assy. Removal
Modules Needle-presser module Needle holder guide assy. removal 1. Remove the screw 1, and remove the needle holder guide assy 1 and the upper unit support plate 2. Lever A spring removal 1. Remove the spring Needle bar supporter assy. removal 1.
Page 56: Lever Ab Assy. Removal
Modules Needle-presser module Lever AB assy. removal Retaining ring E2 1. Remove retaining ring E2. 2. Remove the screw 1, and remove the lever guide shaft 1. 3. Remove the lever presser plate 2, lever AB assy 3 and the retaining ring E2 from the lever guide shaft 1.
Page 57: Thread Guide Plate Removal
Modules Needle-presser module Thread guide plate removal 1. Remove the thread guide pate 1. Hook release plate removal 1. Remove the screw 1, and detach the hook release plate 1. Threader hook assy. disassembly 1. Remove the thread guide assy, threader hook assy, link A assy, and link B. 2 - 40...
Page 58: Presser Foot Lifter Removal
Modules Needle-presser module Presser foot lifter removal Retaining ring E4 1. Remove the retaining ring E4. 2. Remove the presser foot lifter 1 and the 2 washer 2. 3. Remove the presser lift shaft 3 and remove the retaining ring E4. 4.
Page 59: Thread Take-Up Counter Weight Removal
Modules Needle-presser module Thread take-up counter weight removal 1. Remove the 2 screws 1, and thread take-up counter weight 1, thrust washer, unit shaft 2 and thrust washer. 2. Remove the retaining ring E6 from the unit shaft 2. Retaining ring E6 Presser bar removal 1.
Page 60: Thread Take-Up Lever Link Removal
Modules Needle-presser module Thread take-up lever link removal 1. Remove the screw 1. 2. Remove the retaining ring E4, and remove the shaft 1, spring thread take-up lever link 2. Retaining ring E4 Shaft bushing assembly removal 1. Remove the 2 screws 1, and remove the shaft bushing assembly 1. 2 - 43...
Page 61: Feed Module
Modules Feed module breakout diagram 2 - 44...
Page 62: Needle Plate A Removal
Modules Feed module Needle plate A removal 1. Remove the 2 screws 1, and remove the needle plate A 1. Needle plate A disassembly 1. Remove the screw 1, and then remove the F gear stopper plate 1. 2. Remove the 2 screws 2, and then remove the needle plate B support plate 2 and the stopper plate 3.
Page 63: Photo Diode Holder Assembly Removal
Modules Feed module Photo diode holder assembly removal 1. Remove the screw 1, and then remove the photo diode holder assembly Photo diode assembly disassembly 1. Remove the photo diode assembly 1 from the photo diode holder 2. *Key point •...
Page 64: Lower Shaft B Assy. Removal
Modules Feed module Lower shaft B assy. removal 1 x 2 1. Remove the 2 screws 1, and remove the joint 1. 2. Remove the 2 screws 2, and remove the bushing presser A 2. 3. Remove the lower shaft B assy 3. 4.
Page 65: Stopper Plate Block Assy. Removal
Modules Feed module Stopper plate block assy. removal 1. Remove the screw 1, and remove the stopper plate block assy 1. Bushing supporter B assy. removal 1. Remove the 2 screws 1, and remove the bushing supporter B assy 1. Bushing presser B removal 1.
Page 66: Thread Cutter Module
Modules Thread cutter module breakout diagram 2 - 49...
Page 67: Thread Cutter Frame Assembly Removal
Modules Thread cutter module Thread cutter frame assembly removal 1. Remove the 2 screws 1, and then remove the thread cutter frame assembly 1, 2 collars 2, and polyester slider 3. 2. Remove the wave-shape spring washer 4. Photo transistor assembly removal 1.
Page 68: Cutter Holder Assembly Removal
Modules Thread cutter module Cutter holder assembly removal 1. Remove the cutter holder assembly 1. 2. Remove the NT lower thread cutter 2 from the cutter holder assembly 1. Thread hook assy. disassembly 1. Remove the retaining ring E4, and remove the polyester slider 1, polyester slider 2 and the thread hook assy 3.
Page 69: Thread Cutter Lever Assy. Removal
Modules Thread cutter module Thread cutter lever assy. removal 1. Remove the thread cutter lever assy 1. Thread cutter lever assy. disassembly 1. Remove the screw 1, and remove the thread cutter lever gear 1. Idle gear A and idle gear B removal Retaining ring E2 1.
Page 70: Embroidery Parts
Embroidery Embroidery parts location diagram 2 - 53...
Page 71: Ypm Cover Removal
Embroidery Embroidery parts YPM cover removal 1. Remove the screw 1, and then remove the YPM cover 1. X carriage cover removal 1. Remove the screw 1, and then remove the X carriage cover 1. 2 - 54...
Page 72: Es Main Cover Assembly Removal
Embroidery Embroidery parts ES main cover assembly removal 1. Remove the 4 screws 1, and then remove the ES main cover assembly 1. *Key point • Position the embroidery machine as shown in the photo on the right, and then slide the X carriage assembly 2 to the left. •...
Page 73: Lead Wire Assembly (Emb Unit Fcomb) Removal
Embroidery Embroidery parts Lead wire assembly (EMB unit FCOMB) removal 1. Remove the 2 connectors from the EMB relay PCB assembly 1. 2. Remove the lead wire 3 of the lead wire assembly (EMB unit FCOMB) 2 from the guide 4 of the main frame subassembly. 3.
Page 74: Lock Release Lever Assembly Removal
Embroidery Embroidery parts Lock release lever assembly removal 1. Remove the spring from the lock finger 2 on the lock release lever assembly 1. 2. Remove the lock release lever assembly 1. 3. Remove the spring from the ES base cover. Lock release lever ASSY disassembly 1.
Page 75: Groove Cover Removal
Embroidery Embroidery parts Groove cover removal 1. Remove the groove cover 1 from the ES base cover. EMB relay PCB assembly removal 1. Remove the 3 connectors 1 from the EMB relay PCB assembly 2. 2. Remove the 2 screws 1, and then remove the EMB relay PCB assembly X belt presser removal 1.
Page 76: Xy Carriage Unit Removal
Embroidery Embroidery parts XY carriage unit removal 1. Remove the 2 screws 1, and then remove the XY carriage unit 1 from the main frame 2. 2. Remove the X guide shaft 3 from the Y carriage assembly 4. Oil guard plate removal 1.
Page 77: X Tension Pulley Assembly Removal
Embroidery Embroidery parts X tension pulley assembly removal 1. Remove the 2 screws 1, and then remove the timing belt 1 and the X tension pulley assembly 2. X tension pulley ASSY disassembly Retaining ring E4 1. Remove the retaining ring (E4), and then remove the tension pulley 2 from the X tension pulley assembly 1.
Page 78: X Initial Shutter Removal
Embroidery Embroidery parts X initial shutter removal 1. Remove the screw 1, and then remove the X initial shutter 1. *Key point • The X initial shutter has sharp edges. Be careful when handling it. X slider removal 1. Remove the lead wire from the guide of the X slider 1. 2.
Page 79: Y Slider Removal
Embroidery Embroidery parts Y slider removal 1. Remove the screw 1, and then remove the Y slider 1. Y carriage unit removal Retaining ring E4 1. Remove the retaining ring (E4). 2. Pull out the Y guide shaft 1 from the Y carriage unit 2. 3.
Page 80: Y Carriage Assy Disassembly
Embroidery Embroidery parts Y carriage ASSY disassembly 1. Remove the screw 1, and then remove the spring 1. 2. Remove the screw 2, and then remove the Y initial shutter 2. 3. Remove the screw 3, and then remove the Y guide shaft presser plate 3. 4.
Page 81: Y Tension Pulley Assembly Removal
Embroidery Embroidery parts Y tension pulley assembly removal 1. Remove the 2 screws 1, and then remove the timing belt 1 and the Y tension pulley assembly 2. Y tension pulley ASSY disassembly 1. Remove the retaining ring (E4), and then remove the plain washer (M6) 1 and the tension pulley 2.
Page 82: Y Driving Gear Pulley Assembly Removal
Embroidery Embroidery parts Y driving gear pulley assembly removal 1. Remove the retaining ring (E4), and then remove the plain washer (M6) 1 and the Y driving gear pulley 2. 2. Remove the retaining ring (E2), and then remove the gear 3. Retaining ring E4 Retaining ring E2 Y sensor PCB assembly removal...
Page 83 2 - 66...
Page 84: Assembly
Assembly When disassembly and assembly are performed, make adjustments according to "4 Adjustments." Main unit Needle bar, presser mechanism / upper shaft mechanism ....3 - 2 Rotary hook drive mechanism / Feed and bobbin mechanism / Cutter assy........3 - 7 Bobbin winder mechanism ....
Page 85: Needle Bar, Presser Mechanism / Upper Shaft Mechanism
Main unit Needle bar, presser mechanism / upper shaft mechanism location diagram 3 - 2...
Page 86: Plate Spring Attachment
Main unit Needle bar, presser mechanism / upper shaft mechanism Plate spring attachment *Front view 1. Attach the plate spring 1 from the front of the arm bed using the 2 screws 2. Attach the plate spring 1 from the back of the arm bed using the adjusting screw 2.
Page 87: Needle-Presser Module Attachment
Main unit Needle bar, presser mechanism / upper shaft mechanism Needle-presser module attachment 1. Attach the retaining ring E5 to the shaft 1. 2. Insert the shaft 1 into the shaft hole on the left side of the needle presser module 2.
Page 88: Pulley Attachment
Main unit Needle bar, presser mechanism / upper shaft mechanism Pulley attachment 1. Attach the pulley 1 to the upper shaft assy. *Key point • When the D cut 2 on the upper shaft is facing forward, the pulley base line 3 is on the upper side. forword Upper shaft assy.
Page 89: Connecting The Needle-Presser Module And Upper Shaft
Main unit Needle bar, presser mechanism / upper shaft mechanism Connecting the needle-presser module and upper shaft 1. Face the unit shaft D cut 1 and the upper shaft D cut 2 forward. 2. Screw the 2 screws 1 into the fixed joint 3. *Key point •...
Page 90: Rotary Hook Drive Mechanism / Feed And Bobbin Mechanism /Cutter Assy. Mechanism
Main unit Rotary hook drive mechanism / Feed and bobbin mechanism /Cutter assy. mechanism location diagram 3 - 7...
Page 91: Assembling The Lower Shaft A Assembly
Rotary hook drive mechanism / Feed and bobbin Main unit mechanism /Cutter assy. mechanism Assembling the Lower shaft A assembly Retaining ring E6 1. Attach the retaining ring E6 to the lower shaft A 1. 2. Attach the thrust washer 2, lower shaft bushing 3, thrust washer 2 and set screw collar 4 (Face the ground surface toward the lower shaft bushing).
Page 92: Lower Shaft A Attachment
Main unit Rotary hook drive mechanism / Feed and bobbin Lower shaft Lower shaft A attachment pulley base line 1. Rotate the lower shaft, and bring the needle bar to its highest point 1 (lower shaft pulley base line forward). 2.
Page 93: Thread Cutter Module Attachment
Main unit Rotary hook drive mechanism / Feed and bobbin Thread cutter module attachment *Bottom view 1. Attach the thread cutting module 1 with the screws 1 and 2. 2. Attach the free arm plate 2 with the 2 screws 3. Torque Screw, Bind M4X5...
Page 94: Bobbin Winder Mechanism
Main unit Bobbin winder mechanism location diagram 3 - 11...
Page 95: Bobbin Winder Shaft Stopper (Bobbin Winder Assembly Holder) Assembly
Main unit Bobbin winder mechanism Bobbin winder shaft stopper (bobbin winder assembly holder) assembly 1. Attach the bobbin winder shaft stopper 1 and SW adjust plate 2 to the bobbin winder assembly holder 3, and hand start the 2 screws 1. (Fully tighten after 3 - 13 "5 Bobbin winder holder assembly attachment.") Torque Taptite, Bind B...
Page 96: Bw Holder Supporter Attachment
Main unit Bobbin winder mechanism BW holder supporter attachment 1. Attach the BW holder supporter 1 using the screw 1. Torque Taptite, Bind S M4X10 1.18 — 1.57 N·m Bobbin winder holder assembly attachment 1. Attach the bobbin winder assembly 1 using the screw 1. 2.
Page 97: Bobbin Winder Cover Attachment
Main unit Bobbin winder mechanism Bobbin winder cover attachment 1. Attach the bobbin winder cover 1 using the screw 1. Torque Screw, Bind M3X6 0.78 — 1.18 N·m Bobbin base assembly 1. Attach the 2 NT lower thread cutters 1 and the bobbin thread cutter holder 2 to the bobbin base 3.
Page 98: Thread Tension Mechanism
Main unit Thread tension mechanism location diagram 3 - 15...
Page 99: Spring Tape Attachment
Main unit Thread tension mechanism Spring tape attachment 1. Attach the spring tape 1 to the thread guard assembly 2. 0 — 0.5 *Key point • See the figure to the right for positioning. Thread guide wire attachment 1. Attach the thread guide wire 1 and the washer 2 using the screw 1. *Key point •...
Page 100: Thread Take Up Spring Attachment
Main unit Thread tension mechanism Thread take up spring attachment 1. Attach the spring to the thread catching spring case 1. *Key point • Insert the tip 2 of the spring into the right-most hole of the three spring tension positioning holes. •...
Page 101: Tension Disk Attachment
Main unit Thread tension mechanism Tension disk attachment 1. Attach the tension disc A 1, tension disc B 2, washer 3, thread tension plate A 4, the tension disc washer 5, washer 3, spring and tension adjusting screw 6 to the thread tension disk shaft. 2.
Page 102: Thread Tension Gear Attachment
Main unit Thread tension mechanism Thread tension gear attachment 1. Attach the thread tension gear 1, spring 2 and thread tension gear cover 3 and attach the retaining washer E3. *Key point • Attach the spring 2 to the small holes 4 in the thread tension gear 1 and the thread tension gear cover 3.
Page 103: Tension Releaser Link Attachment
Main unit Thread tension mechanism Tension releaser link attachment 1. Attach the tension releaser link 1 to the thread release holder assy 2, and the attach retaining ring E3. Retaining ring E3 Thread guide shutter assembly 1. Attach the thread guide shutter 1 to the tension release holder assy. 2.
Page 104: Thread Release Holder Assy. Attachment
Main unit Thread tension mechanism Thread release holder assy. attachment 1. Attach the tension release holder assy 1 to the thread guard assembly using the 2 screws 1. Torque Screw, Bind M3X4 0.78 — 1.18 N·m Upper thread PCB unit assembly 1.
Page 105: Tension Plate Attachment
Main unit Thread tension mechanism Retaining ring Tension plate attachment 1. Attach the spacer 1 to the tension release holder assy. 2. Attach the tension pressure assy 2, the spring and tension release cam 3. 3. Attach the tension plate 4. 4.
Page 106: Thread Guide Cover Assembly
Main unit Thread tension mechanism Thread guide cover assembly 1. Attach the thread guide cover 1 to the thread guide assy 2 using the screw 1. 2. Attach the thread guide cover assembly 3 to the thread guard assembly 4 using the 2 screws 2.
Page 107: Electrical Parts And Motors
Main unit Electrical parts and motors location diagram 3 - 24...
Page 108: Belt Guard Attachment
Main unit Electrical parts and motors Belt guard attachment 1. Attach the belt guard 1 to the arm bed with the screw 1. Torque Screw, Bind M4X8 0.78 — 1.18 N·m NP PCB assy. attachment 2, 3 1. Attach the PCB holder 1 to the arm bed using the 3 screws 1. 2.
Page 109: Main Motor Assembly Attachment
Main unit Electrical parts and motors Main motor assembly attachment 1. Attach the timing belt 1 to the upper shaft timing pulley and the motor pulley, align the main motor assembly 2 with the arm bed and hand start the 2 screws 1. (Fully tighten after 4 - 7 "Motor belt tension").
Page 110: Connector Holder Assy Assembly And Attachment
Main unit Electrical parts and motors Connector holder ASSY assembly and attachment 1. Attach the retaining ring (E2) to ES pin F-A 1. 2. Attach the retaining ring (E2) to the sharper end of ES pin F-B 2, and then insert the feed bar spacer 3 and the spring 3.
Page 111: Pbc Unit Led Lamp-Fl Attachment
Main unit Electrical parts and motors PBC unit LED lamp-FL attachment 1. Attach the PBC unit LED lamp-FL 1 to the needle-presser module using the screw 1. Torque Taptite,Pan B M4X12 0.78 — 1.18 N·m Wire clip attachment 1. Attach the 4 coating clips 1 to 4 with the 3 screws 1. *Key point •...
Page 112: Main Parts
Main unit Main parts location diagram 3 - 29...
Page 113: Handle Assembly And Attachment
Main unit Main parts Handle assembly and attachment 1. Attach the handle, handle holder and polyester slider to the handle shafts, Retaining ring E4 and attach 2 retaining rings E4. 2. Attach the handle to the arm bed using the 2 screws 1. Torque Taptite, Bind S M4X10...
Page 114: Front Cover Assembly (Sv Cover Attachment)
Main unit Main parts Front cover assembly (SV cover attachment) 1. Attach the SV cover 1. Front cover assembly (SS-VR F PCB assy. attachment) 1. Attach the thread cut button 1, reverse button 2, and SS button 3. 2. Attach the SS-VR PCB assembly 4 to the front cover with the 2 screws *Key point •...
Page 115: Front Cover Assembly (Spool Pin Attachment)
Main unit Main parts Front cover assembly (spool pin attachment) 1. Attach the spool pin 1 to the spool pin holder assembly 2. 2. Attach the thread bobbin cover 3 and the spool pin holder assembly 2 with the screws 1 and 2. *Key point •...
Page 116: Touch Panel Assembly Attachment
Main unit Main parts Touch panel assembly attachment 1. Attach the touch panel assembly 1 to the front cover. Main PCB holder assembly attachment 1. Attach the light plate assembly 1 to the main PCB holder 2 using the 2 hooks 3 on the main PCB holder 2.
Page 117: Main Pcb Assembly Attachment
Main unit Main parts Main PCB assembly attachment 1. Position the PCB plate B 1 and then the main PCB assembly 2, and then attach these to the front cover with the 4 screws 1. 2. Connect the lead wirefs connectors and FFC cords (3 each) to the main PCB assembly 2.
Page 118: Front Cover Attachment
Main unit Main parts Front cover attachment 1. Connect the FFC cord 1 and the lead wirefs connector to the main PCB *Key point • Move the lock of the connector on the main PCB 2 to the upright position to release it, insert the FFC cord 1 with the blue surface facing up, and then press the lock down to secure the cord.
Page 119: Free Arm Cover Attachment
Main unit Main parts Free arm cover attachment 1. Attach the free arm cover 1 to the arm bed with the screw 1. Torque Screw, Pan (S/P washer) M4X8 0.78 — 1.18 N·m Front thread guide cover attachment 1. Attach the front thread guide cover 1 using the screw 1. Torque Screw, Bind M3X4...
Page 120: Face Plate Assembly
Main unit Main parts Face plate assembly 1. Attach the needle thread lever shaft 1, needle thread lever 2, and rubber washer 3 to the face plate. 2. Attach the shaft presser plate 4 to the face plate with the screw 1. 3.
Page 121: Embroidery Attachment
Main unit Main parts Embroidery attachment 1. Embroidery 1 to the main unit. 3 - 38...
Page 122: Needle-Presser Module
Modules Needle-presser module breakout diagram 3 - 39...
Page 123: Shaft Bushing Assembly Attachment
Modules Needle-presser module Shaft bushing assembly attachment 1. Using the 2 screws 1, attach the shaft bushing assembly 1 to the upper unit holder. Torque Screw, Pan (S/P washer) M4X14DB 1.18 — 1.57 N·m Thread take-up lever link assembly 1. Apply a small amount of MOLYKOTE EM30L to the shaft hole in the thread take-up lever link.
Page 124: Presser Bar Attachment
Modules Needle-presser module Presser bar attachment 1. Insert the presser bar bushing 1 into the shaft hole on the bottom of the unit holder. 2. Attach the plate spring 2 to the unit holder with the screw 1. *Key point •...
Page 125: Thread Take-Up Counter Weight Attachment
Modules Needle-presser module Thread take-up counter weight attachment Retaining ring E6 1. Attach the retaining ring E6 to the unit shaft 1. 2. Attach the thrust washer 2, unit shaft 1, thrust washer 2 to the shaft bushing assembly 3. 3.
Page 126: Thread Take-Up Lever Assy. Attachment
Modules Needle-presser module Thread take-up lever assy. attachment 1. Apply a bead of MOLYKOTE EM30L to the 2 calking shafts of the needle bar crank 1. 2. Apply a bead of MOLYKOTE EM30L to the calking shaft of the thread take-up lever assembly 2.
Page 127: Presser Foot Lifter Attachment
Modules Needle-presser module Presser foot lifter attachment Retaining ring E4 1. Attach the 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 hole 2 in the thread releaser assy, and attach the 2 washer 3 and presser foot lifter 4.
Page 128: Threader Hook Assy. Attachment
Modules Needle-presser module Threader hook assy. attachment 1. Assemble the threader hook assy 1, link A assy 2, link B 3 and thread guide assy 4. 2. Align the needle thread shaft A 5 to the shape of the threader hook assy 1 shaft hole, and attach the threader hook assy 1 to the needle thread shaft A 5.
Page 129: Thread Guide Plate Attachment
Modules Needle-presser module Thread guide plate attachment 1. Attach the thread guide plate 1 to the upper unit holder. Shaft bushing A attachment 1. Attach the shaft bushing A 1 to the upper unit holder using the screw 1. Torque Taptite, Bind B M3X8 0.78 —...
Page 130: Lever Ab Assy. Attachment
Modules Needle-presser module Lever AB assy. attachment Retaining ring E2 1. Attach the retaining ring E2 to the lever guide shaft 1. 2. Apply a small amount of EPNOC AP(N)0 to the lever guide shaft 1. 3. Apply a small amount of MOLYKOTE EM30L to the upper unit holder slide groove.
Page 131: Lever A Spring Attachment
Modules Needle-presser module Lever A spring attachment 1. Attach the spring to the lever AB assy 1 and the plate 2. 30.1 SPRING XC2461*** A decided hook form is the same. Needle holder guide assy attachment 1. Apply a small amount of EPNOC AP(N)0 to the needle bar supporter assy needle roller 1.
Page 132: Needle Bar Assembly Attachment
Modules Needle-presser module Needle bar assembly attachment 1. Apply a small amount of EPNOC AP(N)0 to the needle thread block 1. 2. Hand tighten the needle bar 2, needle thread block 1 and needle bar hook stand assy 3 using the 2 screws 1. (Fully tighten after 4 - 15 "Presser bar height,"...
Page 133: Spring (For Needle Bar Supporter Assy.) Attachment
Modules Needle-presser module Spring (for needle bar supporter assy.) attachment 1. Attach the spring to the needle bar supporter assy plate 1 and the upper unit holder 2. *Key point • Connect the side with the short hook to the needle bar supporter assy plate 1 and the long side to the upper unit holder 2.
Page 134: Quiltintg Foot Attachment
Modules Needle-presser module Quiltintg foot attachment 1. Attach the quilting foot 1 to the presser bar using the screw 1. Torque Screw 3.57 1.18 — 1.57 N·m 3 - 51...
Page 135: Feed Module
Modules Feed module breakout diagram 3 - 52...
Page 136: Bushing Supporter Assy. Assembly
Modules Feed module Bushing supporter assy. assembly 1. Attach the lower shaft bushing 1 and the bushing presser B 2 to the bushing supporter assy 3 using the 3 screws 1. 2. Lubricate the lower shaft bushing 1 with 1 – 2 drops of FBK OIL RO 100. Lubricate the lower shaft bushing round surface with 1 —...
Page 137: Assembling The Lower Shaft B Assy
Modules Feed module Retaining Assembling the lower shaft B assy 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 138: Lower Shaft B Assy. Attachment
Modules Feed module Lower shaft B assy. attachment 1. Attach the lower shaft B assy 1 to the feed base 2. 2. Attach the bushing supporter A 3 to the feed base 2. 3. Attach the bushing presser A 4 using the 2 screws 1. 4.
Page 139: Outer Rotary Hook Assy. Attachment
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 the spacer (thin) 3. *Key point •...
Page 140: Cord Holder Attachment
Modules Feed module Cord holder attachment 1. Pass the photo diode lead wire 1 through the cord holder 2. 2. Attach the cord holder 2 to the inner rotary hook bracket 3 with the screw 1. Torque Screw, Bind M2X3 0.29 —...
Page 141: Needle Plate A Assy. Attachment
Modules Feed module Needle plate A assy. attachment 1. Attach the needle plate A 1 using the 2 screws 1. Torque Screw 1.18 — 1.57 N·m 3 - 58...
Page 142: Thread Cutter Module
Modules Thread cutter module breakout diagram 3 - 59...
Page 143: C Pulse Motor Attachment
Modules Thread cutter module C pulse motor attachment 1. Attach the C pulse motor (ZPMM35SP-9N) 1 to the motor holder assy 2 using the 2 screws 1. *Key point • Attach the band 3. 2. Lubricate the C pulse motor 1 bearing with 1 – 2 drops of turbine oil # 100.
Page 144: Assembling The Thread Cutter Lever Assy
Modules Thread cutter module Assembling the thread cutter lever assy 1. Attach the thread cutter lever gear 1 to the thread cutter lever 2 using the screw 1. Torque Screw, Pan (S/P washer) M3X6DA 0.78 — 1.18 N·m Thread cutter lever assy. attachment 1.
Page 145: Assembling The Thread Hook Assy
Modules Thread cutter module Assembling the thread hook assy 1. Attach the thread hook assembly 1 to the spacer 2. 2. Attach the washer 3, polyester slider 4 to pin A 5, and then attach the retaining ring (E4). Retaining ring E4 Cutter holder assembly attachment 1.
Page 146: Sensor Holder Attachment
Modules Thread cutter module Sensor holder attachment 1. Attach the sensor holder 1 with the 2 screws 1. Torque Screw, Pan (S/P washer) M3X6DA 0.78 — 1.18 N·m Thread cutter check 1. Pull the thread hook assy 1 from the thread cutter frame assy. 2.
Page 147: Thread Cutter Frame Assembly Attachment
Modules Thread cutter module Thread cutter frame assembly attachment 1. Attach the polyester slider 1 to thread hook pin A 2. 2. Attach the wave-shape spring washer 3 to the thread cutter lever shaft 4. 3. Attach the thread cutter frame assembly 5 and the 2 collars 6 to the motor holder assembly 7 with the 2 screws 1.
Page 148: Embroidery Parts
Embroidery Embroidery parts location diagram 3 - 65...
Page 149: Y Sensor Pcb Assembly Attachment
Embroidery Embroidery parts Y sensor PCB assembly attachment 1. Attach the Y sensor PCB assembly 1 to the X carriage assembly with the screw 1. *Key point • Engage the tab 2 on the X carriage assembly with the groove on the Y sensor PCB assembly 1.
Page 150: Y Tension Pulley Assembly Attachment
Embroidery Embroidery parts Y tension pulley assembly attachment 1. Attach the retaining ring (E4) to the shaft (lower groove) of the Y tension pulley assembly 1. 2. Set the tension pulley 2 and the plain washer (M6) 3 onto the shaft of the Y tension pulley assembly 1, and then attach the retaining ring (E4).
Page 151: Y Pulse Motor Assembly Attachment
Embroidery Embroidery parts Y pulse motor assembly attachment 1. Apply 1 or 2 drops of FBK OIL RO 100 to the shaft of the Y pulse motor assembly 1. 2. Attach the Y pulse motor assembly 1 to the X carriage assembly 2 with the 2 screws 1.
Page 152: Y Carriage Unit Attachment
Embroidery Embroidery parts Y carriage unit attachment Retaining ring E4 1. Attach the retaining ring (E4) to the Y guide shaft 1, and then attach the wave spring washer 2 to the Y guide shaft 1. 2. Insert the Y guide shaft 1 from the Y tension pulley assembly side of the X carriage assembly 3.
Page 153: Cord Guide Attachment
Embroidery Embroidery parts Cord guide attachment 1. Insert the lead wire assembly YPM relay 1 and then the lead wire of the Y sensor PCB assembly 2 into the groove on the cord guide 3, and then secure these with the screw 1. *Key point •...
Page 154: X Driving Gear Pulley Attachment
Embroidery Embroidery parts X driving gear pulley attachment 1. Apply a bead of EPNOC AP (N)0 to the shaft 1 of the main frame subassembly. 2. Set the washer 2 and the X driving gear pulley 3 onto the shaft 1, and then attach the retaining ring (E4).
Page 155: X Tension Pulley Assy Attachment
Embroidery Embroidery parts X tension pulley ASSY attachment 1. Hang one end of the timing belt 1 over the X driving gear pulley 2, and the other end over the X tension pulley assembly 3. 2. Move the X tension pulley assembly 3 to the right, and then temporarily tighten the 2 screws 1.
Page 156: Oil Guard Plate Attachment
Embroidery Embroidery parts Oil guard plate attachment 1. Attach the oil guard plate 1 to the main frame unit with the 2 screws 1. Torque Screw, Bind M3X4 0.79 — 1.18 N·m XY carriage unit removal 1. Position the XY carriage unit 1 as shown in the photo on the right, and then insert the X guide shaft 2.
Page 157: X Belt Presser Removal
Embroidery Embroidery parts X belt presser removal 1. Insert the X belt presser 1 into the gear of the timing belt 2. 2. Slide the XY carriage unit to align the round hole on the X belt presser 1 with the screw hole on the XY carriage unit, and then secure these with the screw 1.
Page 158: Rubber Cushion And Rubber Cushion Cover Attachment
Embroidery Embroidery parts Rubber cushion and rubber cushion cover attachment 1. Attach the 2 rubber cushions 1 to the ES base cover. 2. Insert the 2 rubber cushion covers 2 into the attachment groove. Lock release lever ASSY assembly 1. Attach the lock finger 2 to the lock release lever 1. Lock release lever assembly attachment 1.
Page 159: Es Base Cover Unit Attachment
Embroidery Embroidery parts ES base cover unit attachment 1. Align the 2 positioning holes on the main frame unit 2 with the 2 bosses at the center of the ES base cover unit 1. 2. Secure the ES base cover unit 1 to the main frame unit 2 with the 6 screws (1x2, 2x4).
Page 160: Groove Cover Attachment
Embroidery Embroidery parts Groove cover attachment 1. Attach the groove cover 1 to the ES main cover. *Key point • Refer to the photo on the right for attachment of the groove cover 1. ES main cover assembly attachment 1. Position the ES base cover unit 1 as shown in the photo on the right, and then slide the X carriage assembly 2 to the left.
Page 161: X Carriage Cover Attachment
Embroidery Embroidery parts X carriage cover attachment 1. Position the X carriage cover 1 so that it covers the X carriage assembly, and then temporarily tighten the screw 1. *Key point • Fully tighten the screw after the YPM cover has been attached.
Page 162: Adjustment
Adjustment Inspection Needle point damage......4 - 2 Test Mode Starting test mode........4 - 3 List of the Test Mode ......4 - 4 Touch panel ..........4 - 5 Adjustment Timing belt tension........4 - 6 Motor belt tension ........4 - 7 Fine tension ..........
Page 163: Needle Point Damage
Inspection Needle point damage 1. Put needle on a level block, and check a needle is not bent. The gap with the block should be even. Level block 2. Slide a needle on your finger and check it moves smoothly (no damage on needle point). 4 - 2...
Page 164: Starting Test Mode
Test Mode Starting test mode 1. Starting test mode Turn on the power while pressing the (Start/Stop button) and (Needle position buttom), then test mode starts (test mode selection screen is displayed). 2. Starting and stopping operation Test mode selection screen Press the (Start/Stop button) on the front cover.
Page 165: List Of The Test Mode
Test Mode List of the Test Mode Test Mode Ref. Mode Contents of test mode page Serial number/Product ID and software version are Serial Numbers/Product ID displayed. Correct the initial position of embroidery by the 4 keys X Embroidery position direction (right and left) and Y direction (up and down).
Page 166: Touch Panel
Test Mode Touch panel [Adjustment standard] Touch the 5 point in order from 1 to 5, and then “SUCCESS” is displayed. [Adjustment procedure] 1. Turn the power on while pressing the (Start/Stop button), (Needle position button), (Thread cutter button). 2. Touch the point “x” in order from 1 to 5. *Key point •...
Page 167: Timing Belt Tension
Adjustment Timing belt tension [Adjustment standard] 4 to 5mm slack by pushing the center of the belt with a force of 1.96N (200g). [Adjustment procedure] 1. Remove the covers, the motor PCB and PCB holder. 2. Loosen the pan head screw (S/P washer, M4x10) of the tension pulley assembly. 3.
Page 168: Motor Belt Tension
Adjustment Motor belt tension [Adjustment standard] 4 to 5mm slack by pushing the center of the belt with a force of 0.98N (100g). [Adjustment procedure] 1. Remove the front cover assy.. 2. Loosen the 2 upset screws (M4x12 DB) of the motor holder. 3.
Page 169: Fine Tension
Adjustment Fine tension [Adjustment standard] Pass the schappe spun thread #60 through tension plate and pull it by tension gauge, then adjust tension must be in 0.08 to 0.11N (8 to 11g). [Adjustment procedure] 1. Remove the front thread guard cover. 2.
Page 170: Upper Thread Tension
Adjustment Upper thread tension [Adjustment standard] Start test mode, pass the schappe spun thread #60 through the thread guide, tension plate, tension disk and plate assembly, and pull it by tension gauge, then adjust tension must be in 0.412 to 0.461N (42 to 47g). [Adjustment procedure] 1.
Page 171: Needle Left/Right Position
Adjustment Needle left/right position [Adjustment standard] The needle top must drop in the mark area on the needle plate A. [Adjustment procedure] 1. Remove the presser foot. 2. Attach the size 75/11 needle. 3. Turn the pulley by hand, and insert the needle top into the needle plate hole. 4.
Page 172: Needle Bar Rising
Adjustment Needle bar rising [Adjustment standard] The right edge of the needle aligns with the outer rotary hook point when raising up the needle bar 2.29 to 2.69mm from its lowest position. [Adjustment procedure] 1. Start the test mode, and then select the “4” (3-point needle drop mode). 2.
Page 173: 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 clearance between the top of the needle eye and the outer rotary hook point is 1.6 to 2.0mm. [Adjustment procedure] 1.
Page 174: Clearance Between Needle And Rotary Hook Point
Adjustment Clearance between needle and rotary hook point [Adjustment standard] The clearance between the needle and the outer rotary hook point (front and back) is 0.1mm or less. [Adjustment procedure] 1. Remove the face plate assy.. 2. Remove the presser foot, the needle plate B and the needle plate A, and then remove the inner rotary hook assy.. 3.
Page 175: Needle Threader
Adjustment Needle threader [Adjustment standard] When passing the hook into the needle eye, the clearance between the upper edge of the hook and the upper edge of the needle eye is 0mm. [Adjustment procedure] 1. Remove the face plate assy.. 2.
Page 176: Presser Bar Height
Adjustment Presser bar height [Adjustment standard] When the presser foot is lower, the clearance between the needle plate A and bottom surface of the presser foot is 1.5 to 2.5mm. [Adjustment procedure] 1. Remove the face plate assy.. 2. Raise the presser foot lever. 3.
Page 177: Bobbin Winder
Adjustment Bobbin winder [Adjustment standard] The bobbin should be wound evenly, and up to 80 - 90% of the outer diameter of the bobbin. [Adjustment procedure] 1. Loosen the pan head screw (S/P washer, M3x7) of the bobbin winder guide assy. 2.
Page 178: Needle And Presser Foot Front/Back Position
Adjustment Needle and presser foot front/back position [Adjustment standard] The needle top drops in the center position (front/back) of the presser foot hole. [Adjustment procedure] 1. Remove the face plate assy.. 2. Attach the J presser foot, and then lower the presser foot lever. 3.
Page 179: 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 1.6 to 1.8mm. [Adjustment procedure] 1. Remove the needle plate B. 2. Set the inner rotary hook in the outer rotary hook assy.. 3.
Page 180: Inner Rotary Hook Assy. (Lower Thread) Tension
Adjustment Inner rotary hook assy. (lower thread) tension Standard bobbin case (green marking on the screw) [Adjustment standard] Inner rotary hook assy. (lower thread) tension is 0.20 to 0.23N (20 to 23g). [Adjustment procedure] 1. Set the bobbin (the schappe spun thread #90) in the inner rotary hook assy.. 2.
Page 181: Belt Tension (Embroidery Unit)
Adjustment Belt tension (embroidery unit) X timing belt [Adjustment standard] 4mm slack by pushing the center of the belt with a force of 0.98 to 1.38N (100 to 140g). [Adjustment procedure] 1. Loosen the 2 pan head screws (S/P washer, M4x8). 2.
Page 182: Embroidery Unit Center Position
Adjustment Embroidery unit center position Repairing or adjusting the embroidery unit, check this adjustment. [Adjustment standard] The needle drops in the center of embroidery sheet hole. [Adjustment procedure] Checking the embroidery unit center position 1. Remove the presser foot. 2. Attach the embroidery unit to the machine. (Remove embroidery hoop.) 3.
Page 183 4 - 22...
Page 184: 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 The power does not come on........... 5 - 3 Pulse motors do not return to starting position....
Page 185: Error Message List
Failure Investigation for Electronic Parts Error message list Error display Cause (5 - 24) Abnormal rotation in main motor. Key pressed continually with power ON (5 - 24) (operation system SW). (5 - 25) FC disconnect (5 - 26) Dirty speed sensor (5 - 26) NP sensor disconnect The safety device has been activated.
Page 186: The Power Does Not Come On
Failure Investigation for Electronic Parts The power does not come on When the power is turned on, nothing appears on the LCD. When the power is turned on, does To next page the buzzer sound after a while? Is the power supply cord free from Connect the power supply damage and connected correctly? cord correctly or replace it.
Page 187 Failure Investigation for Electronic Parts The power does not come on From previous page Is the FFC connected correctly between the main PCB (CN5) and the motor PCB (CN1)? Connect the FFC correctly. Are both connector locks applied correctly? Is the FFC connecting the main PCB (CN5) to the motor PCB Replace the FFC.
Page 188: Pulse Motors Do Not Return To Starting Position
Failure Investigation for Electronic Parts Pulse motors do not return to starting position When the power is turned ON, the pulse motors do not return to the starting position. • Regardless of needle position, the AT&C pulse motor return to starting position. Is the resistance between the 1 &...
Page 189: The Touch Panel Does Not Work
Failure Investigation for Electronic Parts The touch panel does not work The touch panel does not work. Is the touch panel adjusted correctly? Adjust the touch panel correctly. Is the FPC of the touch panel Connect it properly. connected correctly to CN7 on the main PCB and locked firmly? Is the FFC connected correctly between the main PCB (CN5) and...
Page 190: Lcd Backlight Does Not Come On
Failure Investigation for Electronic Parts LCD backlight does not come on LCD backlight does not come on. Is the lead wire of the LCD assy. and the Reconnect it correctly. main PCB assy. properly connected? Is the lead wire assy. (power) free from Connect the lead wire assy.
Page 191: Main Motor Does Not Turn
Failure Investigation for Electronic Parts Main motor does not turn Main motor does not turn Adjust the assembly of the Does the pulley turn smoothly? upper shaft assy. Is the main motor connector correctly connected to CN301 of the power Connect it properly.
Page 192 Failure Investigation for Electronic Parts Main motor does not turn From previous page Is the presser foot lever lowered? Lower the presser foot lever. Is the PF switch assy. resistance normal? Replace the PF switch assy. • PF switch assy. resistance Switch depressed …...
Page 193: Main Motor Rotation Abnormal
Failure Investigation for Electronic Parts Main motor rotation abnormal • The rotation of the main motor is unstable. • The rotation speed does not reach maximum. When the upper shaft pulley is slowly turned by hand, does the voltage Replace the NP PCB assy. between pins 6 &...
Page 194: Cannot Sew Pattern Correctly
Failure Investigation for Electronic Parts Cannot sew pattern correctly The pattern is not sewn correctly. When the upper shaft pulley is slowly turned by hand, does the voltage Replace the NP PCB assy. between pins 6 & 1, pins 4 & 1, pins 5 &...
Page 195: Thread Tensioning Is Not Correct
Failure Investigation for Electronic Parts Thread tensioning is not correct Thread tensioning is not correct. Is the upper thread threaded correctly? Correct the upper threading. Is the bobbin thread installed correctly? Install the bobbin thread correctly. Is the combination of fabric, thread Use the correct combination.
Page 196: Thread Cutter Does Not Work Normally
Failure Investigation for Electronic Parts Thread cutter does not work normally Thread cutter does not operate normally. Do the thread hook assy. and lever Reassemble the thread cutter gear move smoothly? module. Is the resistance between the 1 & 2 Replace the C pulse motor.
Page 197: Bobbin Winding Cannot Be Done
Failure Investigation for Electronic Parts Bobbin winding cannot be done Bobbin winding cannot be done. Reassemble the bobbin Is the bobbin winder mechanism winder mechanism. assembled and attached correctly? Is the resistance between the bobbin winder assy. connector pins 1 & 2 normal? Replace the BW switch assy.
Page 198: Lamp Does Not Come On
Failure Investigation for Electronic Parts Lamp does not come on The LED lamp does not come on. Are the motor PCB assy. and LED Reconnect the motor PCB assy. lamp FL assy. correctly connected? Are the SS PCB assy. and LED Reconnect the SS PCB assy.
Page 199 Failure Investigation for Electronic Parts Lamp does not come on From previous page When the power PCB connector is removed from the motor PCB (CN19), Replace the power supply is the voltage between pins 5 & 4 of unit. the power PCB connector 26V DC? Replace the LED lamp FL assy., Is the voltage between pins 1 &...
Page 200: Bobbin Thread Detection Does Not Work Normally
Failure Investigation for Electronic Parts Bobbin thread detection does not work normally Bobbin thread detection does not work normally Reconnect the main PCB Are the motor PCB assy. and photo assy. and photo diode PCB diode PCB assy. correctly connected? assy.
Page 201: Upper Thread Sensor Does Not Work Normally
Failure Investigation for Electronic Parts Upper thread sensor does not work normally Upper thread sensor does not work normally. Reconnect the motor PCB Are the motor PCB assy. and upper assy. and upper thread PCB thread PCB assy. correctly connected? assy.
Page 202: Card Cannot Be Used Normally
Failure Investigation for Electronic Parts Card cannot be used normally Embroidery card cannot be used normally. Does the unit operate correctly if Use another card. another card is used? Replace the main PCB assy. 5 - 19...
Page 203 Failure Investigation for Electronic Parts USB cannot be used normally Universal serial bus (USB) cannot be used normally. Is the USB device firmly connected? Connect it properly. When the USB device is replaced with Change the USB device. a new one, does it work correctly? Change the main PCB assy.
Page 204: Embroidery Unit Does Not Operate Normally
Failure Investigation for Electronic Parts Embroidery unit does not operate normally Embroidery unit does not operate normally. Is the resistance across pins 1-2 and pins 3-4 for the X pulse motor Replace the X pulse motor. connector 4-6 Ω? Is the resistance across pins 1-2 and pins 3-4 for the Y pulse motor Replace the Y pulse motor.
Page 205 Failure Investigation for Electronic Parts Embroidery unit does not operate normally From previous page Does the embroidery frame move to the back when initial operation is Replace the lead wire supply started with the Y carriage at the front assy. (sleeve) end (with the slit on Y sensor shut off)? Does the embroidery frame move to the left when initial operation is started...
Page 206 Failure Investigation for Electronic Parts Embroidery unit does not operate normally From previous page Is the resistance between the following pins on the main body lead wire assembly 1Ω or less? Pin 1 & White housing pin 1, Pin 2 & White housing pin 2, Pin 3 &...
Page 207: Error Is Displayed
Failure Investigation for Electronic Parts Error is displayed "F01" is displayed. After the power supply unit is replaced, select the test mode "14". Replace the main PCB assy. After the power is cycled, does the motor correctly rotate? "F02" is displayed. Is one of the Start/Stop key, Needle position key and Thread cutter key Replace the SS PCB assy.
Page 208 Failure Investigation for Electronic Parts Error is displayed "F04" is displayed. Is the FFC connected correctly between the main PCB (CN5) and Connect it properly. the motor PCB (CN9)? Are both connector locks applied correctly? Is the FFC connecting the main PCB (CN5) to the motor PCB Replace the FFC.
Page 209 Failure Investigation for Electronic Parts Error is displayed The error message "F05" or "F06" is displayed on the screen. Is the NP PCB assy. correctly Correctly connect the NP PCB connected to the motor PCB assy. assy. to the main PCB assy. (CN7). (CN7)? Is the FFC connected correctly between the main PCB (CN5) and...
Page 210: Replacement Of Main Pcb Assy Or Motor Pcb Assy
Failure Investigation for Electronic Parts Replacement of main PCB assy or motor PCB assy Do not replace the main PCB assy and motor PCB assy simultaneously. The setting data required to run the sewing machine correctly is stored in both the main PCB assy and the motor PCB assy.
Page 211: Correspondence Table Of "Model" And "Printed-Circuit Board"
Failure Investigation for Electronic Parts Correspondence table of “Model” and “Printed-circuit board” Motor PCB Marking character Model Specifications Parts code on (A) PE-780D/NV780D for all country XD1977*** 1624 PE-770/NV750E ********** 0000 __Z_ Main PCB Marking character Model Specifications Parts code on (B) PE-780D/NV780D for all country...
Page 212: Repair Manual
Repair Manual In this chapter, projects the cause from contents of the malfunction of the products, and explains the method of the fix and the maintenance. When do not understand the cause of the malfunction and the method of the fix and the maintenance, use this chapter.
Page 213 Repair Manual Problem Primary factors and causes Repair method Items for Inspection method Inspection and standards Stitch skipping Needle tip damaged while Needle replacement Tip damage to Touch the needle tip Thread abrasion sewing needle with your finger, be Thread breakage Needle catches and bends sure that it is not Seam unevenness...
Page 214 Repair Manual Problem Primary factors and causes Repair method Items for Inspection method Inspection and standards Even when the Bad PF switch assy. attachment Adjust PF switch assy. Presser switch When the lift lever is presser foot is position attachment position function lifted up and down, raised with a...
Page 215 Repair Manual Problem Primary factors and causes Repair method Items for Inspection method Inspection and standards Irregular rotation Grease or dust adhering to Remove grease or dust Machine Rotate smoothly. (rotation slow / fast speed shutter operation while / unstable) rotating Grease or dust adhering to NP Remove grease or dust...
Page 216 Repair Manual Problem Primary factors and causes Repair method Items for Inspection method Inspection and standards Threading not Thread pushed out at the hook Threading Con firm that the possible function threading lever moves smoothly and that • Vertical slippage in needle Adjust needle thread (4-14) threading through the...
Page 217 Repair Manual Problem Primary factors and causes Repair method Items for Inspection method Inspection and standards 10 Embroidery sewing Embroidery Check that the needle sewing does not break during • Needle Needle contacts outer rotary Adjust clearance between actual sewing and that breakage hook needle and rotary hook point.
Page 218 Repair Manual Problem Primary factors and causes Repair method Items for Inspection method Inspection and standards 11 Upper thread Bad upthread PCB assy. Replace upthread PCB assy. Detecting upper When set the upper detect does not (2-19) (3-21) thread function thread and sew, detect operate normally the presence or...
Page 219 Repair Manual Problem Primary factors and causes Repair method Items for Inspection method Inspection and standards 13 Thread cutter does Bad thread cutter pulse motor Replace thread cutter pulse Thread cutter Check that the thread is not operate, even if motor (2-52) (3-60) function...
Page 220 Repair Manual Problem Primary factors and causes Repair method Items for Inspection method Inspection and standards 15 Embroidery X pulse motor and emb relay Plug connector in (3-74) Embroidery Check that the carriage machine does not PCB assy. connector function moves surely.
Page 221 6 - 10...
Page 222: Special Instructions Of Wiring
Special Instructions of Wiring Needle bar module wiring ......7 - 2 Rotary hook module wiring ......7 - 5 Motor PCB assembly wiring.....7 - 6 Front cover assembly wiring ....7 - 9 Embroidary unit assembly wiring ...7 - 10 7 - 1...
Page 223: Needle Bar Module Wiring
Special Instructions of Wiring Needle bar module wiring 1. Wiring on left side of needle-presser module Secure the lead wires with a clip. The lead wires should be positioned above the rib. 2. Wiring on upper side of needle-presser module Pass the lead wires under the hook.
Page 224 Special Instructions of Wiring Needle bar module wiring 3. Wiring on right side of needle-presser module Pass the lead wires between the PCB and the holder. 4. Wiring on right side of AT pulse motor assembly Secure the end of the two tubes with a band, so that turn the connected section of the band outside.
Page 225 Special Instructions of Wiring Needle bar module wiring 5. Wiring on back side of arm bed Secure the lead wires with a clip. The lead wires should be positioned Pass the lead wires above the rib. through the groove. 7 - 4...
Page 226: Rotary Hook Module Wiring
Special Instructions of Wiring Rotary hook module wiring 1. Wiring on front side of rotary hook module The lead wires should not be loose. Secure the wires with a band, so that turn the connected Secure the lead wires with a clip. section of the band inside.
Page 227: Motor Pcb Assembly Wiring
Special Instructions of Wiring Motor PCB assembly wiring 1. Wiring at lower left section of motor PCB Secure the all lead wires with a band. Secure the lead wires from the rotary hook module, and the lead wires from the main motor assembly with a clip.
Page 228 Special Instructions of Wiring Motor PCB assembly wiring 3. Wiring at top side of motor PCB Pass the lead wires Pass the lead wires through the groove. through the groove. The lead wires from the needle presser module. Secure the lead wires with a clip.
Page 229 Special Instructions of Wiring Motor PCB assembly wiring 5. Wiring at middle section of motor PCB (Connecting the FFC from front cover assembly) 1. Raise the flap of the connector. 2. Insert the FFC in the connector. 3. Push down the flap of the connector. 7 - 8...
Page 230: Front Cover Assembly Wiring
Special Instructions of Wiring Front cover assembly wiring 1. Wiring of LED lamp assembly 2. Wiring of main PCB assembly Pass the lead wires under the hook. 7 - 9...
Page 231: Embroidary Unit Assembly Wiring
Special Instructions of Wiring Embroidary unit assembly wiring 1. Wiring of X slider assembly Attach the nylon sleeve to the guides 123 of the X slider. Do the X carriage like a figure. The nylon sleeve goes over the lower part than an edge A. 7 - 10...
Page 232 Special Instructions of Wiring Embroidary unit assembly wiring 2. Wiring on back side of mainframe 7 - 11...
Page 233 Special Instructions of Wiring Embroidary unit assembly wiring 3. Wiring on lower side of embroidary driving assembly Put the nylon sleeve to the out side than a wall of the ES base cover A. 7 - 12...

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Dz820e Sb7900e Nv770e Nv750e Pe780d

Brother PE770 Service Manual

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