Brother PR-620 Especificaciones

viiiThe needle bar does not move normally. ...5 - 8Thread breakage detection does not function

3 - 2Operation panelMain unit

3 - 3Operation panelMain unitAssembly1 Button attachment1. Attach the SS button 1, operation button 2, and thread cut button 3 tooperation panel A.2.

3 - 4Operation panelMain unit3 LCD attachment1. Attach the FFC 1 to the LCD 2.*Key point• Unlock the connector, insert the FFC 1, and then lock the co

3 - 5Operation panelMain unitAssembly5 Inverter D6 attachment1. Position the inverter PCB collars 1 on the PCB attachment plate, setinverter D6 2, and

3 - 6Operation panelMain unit7 Board case attachment1. Attach the board case 1 with the 2 screws 1.*Key point• Insert the hook on the board case into

3 - 7Operation panelMain unitAssembly9 Operation panel B attachment1. Attach the lead wire 2 on operation panel B 1 to the connector on thepanel PCD.2

3 - 8Operation panelMain unit12 Operation panel lever assembly (Step 1)1. Align operation panel lever B 2 with operation panel lever C 1, threadthe op

3 - 9Operation panelMain unitAssembly14 Operation panel lever assembly attachment1. Insert the operation panel holder 2 into the groove 1 on the pane

3 - 10Thread tension unitMain unit

3 - 11Thread tension unitMain unitAssembly1 Thread take-up bracket assembly*Key point• Make 6 thread take-up bracket assemblies.1. Attach the spring

1 - 11Outline of MechanismMain Mechanisms ... 1 - 2Driveline ...

3 - 12Main unitThread tension unit2 Thread take-up lever cover assembly (Step 1)1. Attach the thread take-up bracket assembly 2 to the thread guide co

3 - 13Thread tension unitMain unitAssembly3 Thread take-up lever cover assembly (Step 2)1. Attach the 6 needle thread presser plates 2 and the 6 sprin

3 - 14Thread tension unitMain unit4 Spool stand frame assembly (Step 1)1. Attach the retaining ring E8 to the spool stand stud 1. (2 sets)2. Attach t

3 - 15Thread tension unitMain unitAssembly6 Antenna assembly (Step 1)1. Attach the retaining ring E5 to the antenna shaft 1. 2. Attach the antenna C a

3 - 16Thread tension unitMain unit8 Antenna assembly attachment1. Attach the antenna assembly to the thread stand base assembly with the 4screws 1.1To

3 - 17Thread tension unitMain unitAssembly10 Thread sensor PCB assembly and head PCB assembly attachment1. Connect the FFC (SML2CD-H) 2 to the thread

3 - 18Thread tension unitMain unit11 Inner thread eyelet base attachment1. Attach the thread guide tension plate 2 to the inner thread eyelet base 1.(

3 - 19Thread tension unitMain unitAssembly13 Tension base lead wire assembly attachment1. Connect the tension base lead wire assembly 1 to the head PC

3 - 20Thread cut unitMain unit

3 - 21Thread cut unitMain unitAssembly1 Cutter unit assembly (Step 1)1. Apply MOLYKOTE EM-30L to the CT motor bracket assembly's shaft 1. 2. Atta

1 - 2Outline of Mechanism Main MechanismsNeedle bar mechanismThread cutting mechanismLower shaft mechanismNeedle threader mechanismFeed mechanismUpper

3 - 22Main unitThread cut unit2 Cutter unit assembly (Step 2)1. Attach the cutter bracket assembly and the 2 collars 1 to the CT motorbracket assembly

3 - 23Thread cut unitMain unitAssembly3 Picker assembly1. Attach the picker motor assembly 1 to the PK motor bracket assemblywith the 2 screws 1. 2. A

3 - 24Power unitMain unit

3 - 25Power unitMain unitAssembly1 Adjust bolt attachment1. Attach the 2 bushes 2 to the handle 1. (4 locations)2. Attach the handle to the base fram

3 - 26Main unitPower unit2 Power PCB assembly1. Attach the power PCB assembly and the insulation sheet 2 to the powerunit cover 1 with the 4 screws 1.

3 - 27Power unitMain unitAssembly3 Power PCB assembly attachment1. Temporarily tighten the 3 screws 1 in the attachment holes on the PCBholder at the

3 - 28Power unitMain unit4 USB PCB assembly and Y-area sensor assembly attachment1. Attach the USB PCB assembly 2 to the USB PCB holder 1 with the 2sc

3 - 29Power unitMain unitAssembly5 Power switch assembly and inlet attachment1. Connect the free end of the 2 power lead wire assemblies 1 (one end is

3 - 30Lower shaft unitMain unit

3 - 31Lower shaft unitMain unitAssembly1 Lower shaft attachment1. Apply FBK OIL RO100 to the 2 felts 1. 2. Attach the felt to the lower shaft metal co

1 - 3Outline of MechanismOutline of Mechanism DrivelineA) Up and down movement of needle bar, movement of presser foot thread take-up mechanism Needle

3 - 32Lower shaft unitMain unit2 Idle pulley assembly1. Apply FBK OIL RO100 to the shaft hole 1 on the idle pulley. 2. Attach the retaining ring E7 to

3 - 33Lower shaft unitMain unitAssembly4 Connection of arm bed and base frame1. Attach the arm bed 1 to the base frame, and temporarily tighten the 4s

3 - 34Upper shaft unitMain unit

3 - 35Upper shaft unitMain unitAssembly1 Upper shaft assembly attachment1. Apply FBK OIL RO100 to the 2 felts 1. 2. Attach the felts to the lower shaf

3 - 36Main unitUpper shaft unit2 Presser foot driving shaft assembly1. Attach the thrust washer and the presser foot lever shaft to the presser footco

3 - 37Upper shaft unitMain unitAssembly3 Presser foot driving shaft assembly attachment1. Apply FBK OIL RO100 to the 2 felts 1. 2. Attach the felts to

3 - 38Main unitUpper shaft unit4 Crank rod assembly attachment1. Attach the crank rod assembly 2 to the thread take-up cam 1, and securethem with the

3 - 39Upper shaft unitMain unitAssembly5 Main shaft sensor final assembly attachment1. Attach the main shaft sensor assembly 1 to the sensor holder 2

3 - 40Main unitUpper shaft unit6 Thread take-up driving lever final assembly1. Attach the roller 2 to the thread take-up differential lever 1, and tig

3 - 41Upper shaft unitMain unitAssembly7 Thread take-up driving lever final assembly attachment 1. Attach the thread take-up driving lever final assem

1 - 4Outline of Mechanism DrivelineB) Movement of rotary hook Lower shaft gearTiming belt Timing pulleyRotary hookLower shaftUpper shaft PulleyIdle pu

3 - 42Main unitUpper shaft unit8 Presser foot vertical base final assembly 1. Attach the presser foot cushion base 2 to the presser foot vertical base

3 - 43Upper shaft unitMain unitAssembly9 Vertical set assembly 1. Attach the J cushion base 2 to the J bracket 1 with the 2 screws 1. 2. Thread the J

3 - 44Upper shaft unitMain unit10 Base needle bar attachment1. Apply MOLYKOTE EM-30L to the shaft 1 and the hole 2 of the J-clamp final assembly and t

3 - 45Upper shaft unitMain unitAssembly11 Driving jump assembly (1)1. Attach the J cushion pin 2 and the J cushion 3 to the J base assembly 1,and then

3 - 46Upper shaft unitMain unit12 Driving jump assembly (2)*Key point• Use a positioning pin (one of adjustment jigs). 1. Thread the plain washer M5 t

3 - 47Upper shaft unitMain unitAssembly13 Driving jump assembly attachment1. Attach the driving jump assembly 1 to the arm bed with the 2 screws 1.*Ke

3 - 48Upper shaft unitMain unit15 Main motor final assembly1. Attach the motor cap 1 to the main motor assembly. 2. Attach the fender rubber 3 to the

3 - 49AssemblyNeedle bar unitMain unit

3 - 50Main unitNeedle bar unit1 Case guide UL assembly 1. Attach the thread take-up guide 1 to the case guide UL 2 with the 2screws 1. *Key point• Che

3 - 51Needle bar unitMain unitAssembly2 Case bracket assembly1. Attach the 2 ball bearings 694 to the case bracket assembly 1, and attachthe 2 retaini

1 - 5Outline of MechanismOutline of Mechanism Positions of electronic componentsASSY: TH sensorASSY: Head PCBASSY: Inverter PCBASSY: SW PCBTouch panel

3 - 52Main unitNeedle bar unit3 Case bracket assembly attachment1. Attach the case guide UL assembly 1 to the arm bed with the 2 screws 1.2. Apply MOL

3 - 53Needle bar unitMain unitAssembly4 Case positioning plate assembly 1. Attach the ball bearing 694 assembly 2 to the case positioning plate 3with

3 - 54Main unitNeedle bar unit7 Needle bar attachment1. Attach a screw 1 to each of the 6 needle bars 1. 2. Apply MOLYKOTE EM-30L to the 12 insertion

3 - 55Needle bar unitMain unitAssembly8 Thread take-up lever assembly1. Attach the thread take-up boss 1 to the thread take-up lever 2 with the 2screw

3 - 56Needle bar unitMain unit9 Thread take-up lever assembly attachment1. Attach the 2 thread take-up bushes 1 to the needle bar case assembly. 2. Ap

3 - 57Needle bar unitMain unitAssembly10 Case guide D attachment1. Attach the case guide D 1 to the needle bar case assembly with the 2screws 1. 1Torq

3 - 58Needle bar unitMain unit12 Needle bar case final assembly attachment1. Rotate the pulley until the base line on the pulley is at the top.2. Appl

3 - 59AssemblyThread wiper unitMain unit

3 - 60Main unitThread wiper unit1 Wiper set assembly1. Attach the wiper motor assembly 2 to the wiper base assembly 1 withthe 2 screws 1. 2. Attach th

3 - 61Thread wiper unitMain unitAssembly2 Wiper guide and wiper sensor attachment1. Attach the wiper cushion 2 to the wiper guide 1. 2. Attach the wip

1 - 6Outline of Mechanism Positions of electronic componentsASSY: Power PCB 100(ASSY: Power PCB 200)ASSY: Power SWASSY: USB PCBASSY: TH cutter motorAS

3 - 62Thread wiper unitMain unit3 Wiper set assembly attachment1. Slightly rotate the wiper lever counterclockwise to create a clearancebetween the wi

3 - 63Thread wiper unitMain unitAssembly4 Thread presser base assembly1. Attach the 2 thread presser spacers 2 and the thread presser coverassembly 3

3 - 64Needle bar change unitMain unit

3 - 65Needle bar change unitMain unitAssembly1 Change box assembly (Step 1)1. Attach the C stop position dog 1 to the change camshaft 2 with the 2scre

3 - 66Main unitNeedle bar change unit2 Change box assembly (Step 2)1. Attach the change gear 1 to the change camshaft. 2. Move the change gear toward

3 - 67Needle bar change unitMain unitAssembly3 Change box assembly (Step 3)1. Attach the index motor assembly 1 to the change motor base 2 with the 2s

3 - 68Needle thread unitMain unit

3 - 69Needle thread unitMain unitAssembly1 Thread motor assembly attachment1. Attach the base plate assembly 2 to the thread guide base 1 with the 2sc

3 - 70Needle thread unitMain unit2 Rack assembly and hook holder link attachment1. Attach the hook holder link 1 to the rack assembly's shaft, an

3 - 71Needle thread unitMain unitAssembly4 Needle thread assembly attachment1. Attach the needle thread assembly 1 with the 6 screws 1. 1TorqueHand st

1 - 7Outline of MechanismOutline of Mechanism Control system block diagramAC Power supplyInletSWPower supplyUSB FconnectorSWASSY : POWER PCBPower supp

3 - 72Feed unitMain unit

3 - 73Feed unitMain unitAssembly1 Connect PCB final assembly1. Bend the FFC (SML2CD-Y) 90 degrees at a point 55 mm from the tip. 2. Attach the sheet 2

3 - 74Main unitFeed unit2 Y-carriage R assembly1. Attach the linear bearing 10 2 to bearing case Y 1, and then attach the 2external retaining rings C1

3 - 75Feed unitMain unitAssembly3 Y-carriage L assembly1. Attach the linear bearing 10 2 to bearing case Y 1, and then attach the 2external retaining

3 - 76Main unitFeed unit4 Feed frame assembly attachment1. Attach the 2 cap connections 1 to the feed frame with the 4 screws 1. (2locations)2. Tempo

3 - 77Feed unitMain unitAssembly5 T-belt (X-drive) attachment1. Hang the T-belt B60S796 3 over the Y driving gear pulley assembly 1and the tension pul

3 - 78Main unitFeed unit6 X-guide shaft attachment1. Attach the linear bearing (12) 2 to bearing case X 1, and then attach the 2external retaining rin

3 - 79Feed unitMain unitAssembly7 Hoop sensor attachment1. Attach the spring to the X-carriage A assembly. 2. Attach the hoop sensor assembly 2 to t

3 - 80Main unitFeed unit8 X-sensor dog attachment1. Attach the caution 1 to the X-carriage 2 with the 2 screws 1. NOTE• The X sensor dog bends easily.

3 - 81Feed unitMain unitAssembly9 X-carriage A assembly and X-carriage B assembly attachment1. Attach the X-carriage B assembly 1 to the 2 bearing cas

1 - 8Outline of Mechanism Operation of other electronic components Start/stop switch . . . . . . . . . . . . . . . . . . . . . . This switch is used

3 - 82Main unitFeed unit10 X-feed frame B attachment1. Apply MOLYKOTE EM-30L to the surface 1 where the X-feed framecontacts the X-roller. 2. Attach t

3 - 83Feed unitMain unitAssembly11 Y-frame spacer and X-belt presser attachment1. Attach the 2 Y-frame spacers 1 to X-carriage B with the 4 screws 1.

3 - 84Main unitFeed unit12 FFC and X-area sensor assembly attachment1. Bend the free end of the FFC (SML2CD-X) connected to the hoop PCBassembly 90 de

3 - 85Feed unitMain unitAssembly13 Cord grip attachment1. Connect the FFC (SML2CD-C) 1 to the connect PCB, and lock theconnector. 2. Connect the X-fee

3 - 86Feed unitMain unit14 Y driving shaft assembly attachment1. Apply FBK OIL RO100 to the 2 felts 1. 2. Attach the felts 1 to the metal collars on t

3 - 87Feed unitMain unitAssembly16 Y motor final assembly attachment1. Attach the Y motor final assembly 1 to the base frame with the 2 screws1. *Key

3 - 88Main unitFeed unit17 Feed final assembly attachment1. Attach the 2 Y-guide shafts 1 to the feed final assembly, and then attachthe feed final as

3 - 89Feed unitMain unitAssembly18 T-belt (Y-guide) attachment1. Attach the Y tension pulley 1 and the plain washer 7 X 2 to the Y tensionplate assemb

3 - 90Main unitMain unit

3 - 91Main unitMain unitAssembly1 Cutter unit final assembly and picker final assembly attachment1. Attach the cutter unit final assembly 1 to the arm

2 - 12Disassembly Main unit Main parts... 2 - 2Feed unit...2 - 15Needle thr

3 - 92Main unitMain unit2 Rotary hook attachment1. Attach the rotary hook 1 to the lower shaft with the 3 screws 1. 1Torque0.78 – 1.18 N-m11Foot set s

3 - 93Main unitMain unitAssembly5 Needle plate base assembly*Key point• After assembling the needle plate base, be sure to do 4 - 38 "Cutter knif

3 - 94Main unitMain unit6 Needle plate base assembly attachment1. Attach the needle plate base assembly 1 to the arm bed with the 2 screws1. *Key poin

3 - 95Main unitMain unitAssembly8 Tension base attachment1. Attach the tension base assembly 1 to the needle bar case final assemblywith the 4 screws

3 - 96Main unitMain unit9 Thread take-up lever cover attachment1. Attach the thread take-up lever cover 1 to the tension base assembly 2with the 2 scr

3 - 97Main unitMain unitAssembly11 Spool stand frame final assembly attachment1. Attach the 3 studs 1 to the top face of the arm bed. 2. Attach the sp

3 - 98Main unitMain unit12 Main PCB assembly attachment1. Attach the board holder U 1 and the board holder D 2 with the 4 screws1. 2. Attach the main

3 - 99Main unitMain unitAssembly13 LED PCB plate attachment1. Attach the LED PCB plate 1 to the arm bed with the 2 screws 1.1Torque1.47 – 1.96 N-m1 1T

3 - 100Main unitMain unit15 Base cover L attachment1. Attach the groove cover A 2 and the groove cover B 3 to the rear of thebase cover L 1. 2. Attach

3 - 101Main unitMain unitAssembly16 Base cover R attachment1. Attach the groove cover A 2 and the groove cover B 3 to the rear of thebase cover R 1. 2

2 - 2Main partsMain unit

3 - 102Main unitMain unit17 Arm cover L attachment1. Attach the arm cover L 1 with the 3 screws 1 and 2. 2. Attach the 3 screw covers. Start movie cli

3 - 103Main unitMain unitAssembly19 Bed cover attachment1. Attach the bed cover 1 and the bed cover top 2 to the arm bed with the 4screws 1. 2. Attach

3 - 104Main unitMain unit20 Motor cover / carriage cover attachment1. Attach the motor cover 1 with the 2 screws 1. 2. Attach the carriage cover 2 to

4 - 14AdjustmentPrecaution Adjustment flow ...4 - 2Inspection Bent needle ...4 - 3Blun

4 - 2Precaution Adjustment flowThe following adjustment items are inter-related. This means that adjusting one of them will affect the adjusted value

4 - 3Inspection and AdjustmentInspection Bent needle1. Place the needle on the surface plate (level block) to check that the needle is not bent. *Key

4 - 4Inspection Blunt needle1. Touch the needle tip with your finger to check that the needle tip is not blunt.

4 - 5Inspection and AdjustmentTest mode Starting test mode / Selecting adjustment test modeStarting test mode1. Turn the [POWER] switch on with the [S

4 - 6Test mode Main board test modeTest Mode Operation Manual NOTE • After replacing the main board, you must set the picker motor over-pulses (See

4 - 7Inspection and AdjustmentTest mode4. [MAIN MOTOR TEST][MOVE ORIGIN POSITION] : Adjusts the angle of the main shaft to the needle top stop positio

2 - 3Main partsMain unitDisassembly 1 Motor cover and carriage cover removal1. Remove the screw cover 1.2. Remove the screw 1, and then remove the car

4 - 8Test mode6. [TRIM MOTOR TEST][MOVE ORIGIN POSITION] : Returns the trim (thread cut) motor to its origin. [MOVE TRIM MOTOR] : Moves the trim (thre

4 - 9Inspection and AdjustmentTest mode9. [THREAD SET MOTOR TEST][MOVE ORIGIN POSITION] : Returns the thread motor to its origin. [MOVE THREAD SET MOT

4 - 10Test mode12. [CASE MOTOR TEST]In addition to conduct the needle bar case motor test, the status of the thread breakage sensor is indicated using

4 - 11Inspection and AdjustmentTest mode15. [NEEDLE THREADER]When the needle bar data has been read via USB, the needle bar numbers for front/back adj

4 - 12Test mode Panel board test modeStarting test modeHold down the [START/STOP], [THREAD CUT], and [THREAD GUIDE] buttons and turn the [POWER]switch

4 - 13Inspection and AdjustmentTest mode3. LCD brightnessSelect this mode to adjust the LCD's brightness.Press the [+] and [-] buttons to adjust

4 - 14Test mode7. USB-F file listSelect this mode to display a list of the files transferred from the PC to check that the USB function is operating c

4 - 15Inspection and AdjustmentTest mode11. Default settingSelect this mode to initialize the panel settings. Items to be initialized are listed below

4 - 16Test modeReference needle bar data for adjustment after main PCB replacementWhen the main PCB has been replaced, [NO DATA] is displayed next to

4 - 17Inspection and AdjustmentTest mode• HOW TO READ NEEDLE BAR NUMBERS ON BAR CODE <e.g.>It is also possible to adjust by selecting the number

2 - 4Main unitMain parts2 Bed cover removal1. Remove the 2 screws 1, and then remove the bed cover bottom assembly1.2. Remove the 2 screws 2, and then

4 - 18Adjustment Motor belt tension adjustment1. Loosen the 2 screws 1. 2. Move the motor holder up and down to adjust the motor belt tension.3. Tight

4 - 19Inspection and AdjustmentAdjustment Timing belt tension adjustment1. Loosen the screw 1.2. Move the tension pulley right and left to adjust the

4 - 20Adjustment Needle position adjustment (front/back)Front/back position adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE] and the

4 - 21Inspection and AdjustmentAdjustment Needle position adjustment (right/left)Right/left position adjustment1. Enter the test mode, and press [MAIN

4 - 22Adjustment Needle bar rising length and needle space adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE] and then [NEEDLE SPACING

4 - 23Inspection and AdjustmentAdjustment Needle bar height adjustment1. Rotate the pulley manually to move the needle bar until the needle's rig

4 - 24Adjustment Rotary hook stopper clearance adjustment1. Loosen the screw 1 and 2. 2. Adjust the clearance between the rotary hook stopper and the

4 - 25Inspection and AdjustmentAdjustment Presser foot height adjustment1. Rotate the pulley manually to move the needle bar to the bottom point. 2. L

4 - 26Adjustment Needle bar top dead center adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE] and then [NEEDLE THREADER]. 2. Press [[

4 - 27Inspection and AdjustmentAdjustment Needle threader adjustment (up/down)Up/down position adjustment1. Enter the test mode, and press [MAIN BOARD

2 - 5Main partsMain unitDisassembly 3 Arm cover R removal1. Remove the 5 screw covers 1. 2. Remove the 2 screws 1, and then remove the arm cover R lid

4 - 28Adjustment Needle threader adjustment (right/left)Right/left position adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE] and the

4 - 29Inspection and AdjustmentCheck Needle threading check1. Enter the test mode, and press [MAIN BOARD TEST MODE] and then [THREAD SET MOTOR TEST].

4 - 30Adjustment Y-belt tension adjustment1. Loosen the 2 screws 1. 2. Loosen the 2 screws 2. 3. Move the Y tension plate assembly back and forth to a

4 - 31Inspection and AdjustmentAdjustment X-belt tension adjustment1. Loosen the 2 screws 1. 2. Move the tension pulley plate assembly right and left

4 - 32Adjustment Picker activation adjustment1. Remove the bobbin case. 2. Enter test mode and press [MAIN BOARD TEST MODE] and then [PICKER MOTOR TES

4 - 33Inspection and AdjustmentAdjustment Movable knife origin adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE] and then [TRIM MOTOR

4 - 34Adjustment Thread presser base up/down position adjustment1. Loosen the 4 screws 1. 2. Adjust the vertical position of the thread presser base.

4 - 35Inspection and AdjustmentAdjustment Hoop sensor adjustment1. Attach the hoop stay assembly to the feed unit.2. Enter the test mode, and press [M

4 - 36Adjustment Upper Shaft Encoder Phase Adjustment1. Enter the test mode, and press [MAIN BOARD TEST] and then press [SENSOR TEST].2. Rotate the up

4 - 37Inspection and AdjustmentAdjustment XY-guide origin adjustment1. Attach the hoop stay assembly to the feed unit.2. Attach the LL-hoop to the hoo

2 - 6Main unitMain parts4 Arm cover L removal1. Remove the 3 screw covers 1. 2. Remove the screw inside the cover 1 and the 2 screws outside the cover

4 - 38Adjustment Cutter knife engagement adjustmentCheck that the engagement load of the movable and fixed knives when the movable knife is pulled in

4 - 14Adjustment (for PR620/BMP8)Precaution Adjustment flow ...4 - 2Inspection Bent needle ...

4 - 2Precaution Adjustment flowThe following adjustment items are inter-related. This means that adjusting one of them will affect the adjusted value

4 - 3Inspection and AdjustmentInspection Bent needle1. Place the needle on the surface plate (level block) to check that the needle is not bent. *Key

4 - 4Inspection Blunt needle1. Touch the needle tip with your finger to check that the needle tip is not blunt.

4 - 5Inspection and AdjustmentTest mode Starting test mode / Selecting adjustment test modeStarting test mode1. Turn the [POWER] switch on with the [S

4 - 6Test mode Main board test modeTest Mode Operation Manual NOTE • After replacing the main board, you must set the picker motor over-pulses (See

4 - 7Inspection and AdjustmentTest mode4. [MAIN MOTOR TEST][MOVE ORIGIN POSITION] : Adjusts the angle of the main shaft to the needle top stop positio

4 - 8Test mode6. [TRIM MOTOR TEST][MOVE ORIGIN POSITION] : Returns the trim (thread cut) motor to its origin. [MOVE TRIM MOTOR] : Moves the trim (thre

4 - 9Inspection and AdjustmentTest mode9. [THREAD SET MOTOR TEST][MOVE ORIGIN POSITION] : Returns the thread motor to its origin. [MOVE THREAD SET MOT

2 - 7Main partsMain unitDisassembly 5 Base cover R removal1. Remove the 2 screw covers 1.2. Remove the 2 screws 1 and then remove the base cover R lid

4 - 10Test mode12. [CASE MOTOR TEST]In addition to conduct the needle bar case motor test, the status of the thread breakage sensor is indicated using

4 - 11Inspection and AdjustmentTest mode15. [NEEDLE THREADER]When the needle bar data has been read via USB, the needle bar numbers for front/back adj

4 - 12Test mode Panel board test modeStarting test modeHold down the [START/STOP], [THREAD CUT], and [THREAD GUIDE] buttons and turn the [POWER]switch

4 - 13Inspection and AdjustmentTest mode3. LCD brightnessSelect this mode to adjust the LCD's brightness.Press the [+] and [-] buttons to adjust

4 - 14Test mode7. USB-F file listSelect this mode to display a list of the files transferred from the PC to check that the USB function is operating c

4 - 15Inspection and AdjustmentTest mode11. Error listThe latest error is displayed.[<] [>] : Changes the language.[+] : Opens the error message

4 - 16Test mode13. Clear tripWhen this mode button is selected, the current values for the stitch counter and sewing time counter (Total and Trip) are

4 - 17Inspection and AdjustmentTest modeReference needle bar data for adjustment after main PCB replacementWhen the main PCB has been replaced, [NO DA

4 - 18Test mode• HOW TO READ NEEDLE BAR NUMBERS ON BAR CODE <e.g.>It is also possible to adjust by selecting the numbers printed on bar code whi

4 - 19Inspection and AdjustmentAdjustment Motor belt tension adjustment1. Loosen the 2 screws 1. 2. Move the motor holder up and down to adjust the mo

2 - 8Main partsMain unit6 Base cover L removal1. Remove the 2 screw covers 1.2. Remove the 2 screws 1, and then remove the base cover L lid 2. 3. Remo

4 - 20Adjustment Timing belt tension adjustment1. Loosen the screw 1.2. Move the tension pulley right and left to adjust the timing belt tension.3. Ti

4 - 21Inspection and AdjustmentAdjustment Needle position adjustment (front/back)Front/back position adjustment1. Enter the test mode, and press [MAIN

4 - 22Adjustment Needle position adjustment (right/left)Right/left position adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE] and the

4 - 23Inspection and AdjustmentAdjustment Needle bar rising length and needle space adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE]

4 - 24Adjustment Needle bar height adjustment1. Rotate the pulley manually to move the needle bar until the needle's right edge matches the rotat

4 - 25Inspection and AdjustmentAdjustment Rotary hook stopper clearance adjustment1. Loosen the screw 1 and 2. 2. Adjust the clearance between the rot

4 - 26Adjustment Presser foot height adjustment1. Rotate the pulley manually to move the needle bar to the bottom point. 2. Loosen the screw 1.3. Adju

4 - 27Inspection and AdjustmentAdjustment Needle bar top dead center adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE] and then [NEED

4 - 28Adjustment Needle threader adjustment (up/down)Up/down position adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE] and then [NEE

4 - 29Inspection and AdjustmentAdjustment Needle threader adjustment (right/left)Right/left position adjustment1. Enter the test mode, and press [MAIN

2 - 9Main partsMain unitDisassembly 8 LED PCB plate removal1. Remove the 2 screws 1, and then remove the LED PCB plate 1.1 19 Main PCB assembly remova

4 - 30Check Needle threading check1. Enter the test mode, and press [MAIN BOARD TEST MODE] and then [THREAD SET MOTOR TEST]. 2. Press [MOVE ORIGIN POS

4 - 31Inspection and AdjustmentAdjustment Y-belt tension adjustment1. Loosen the 2 screws 1. 2. Loosen the 2 screws 2. 3. Move the Y tension plate ass

4 - 32Adjustment X-belt tension adjustment1. Loosen the 2 screws 1. 2. Move the tension pulley plate assembly right and left to adjust the X-belt tens

4 - 33Inspection and AdjustmentAdjustment Picker activation adjustment1. Remove the bobbin case. 2. Enter test mode and press [MAIN BOARD TEST MODE] a

4 - 34Adjustment Movable knife origin adjustment1. Enter the test mode, and press [MAIN BOARD TEST MODE] and then [TRIM MOTOR TEST]. 2. Press [MOVE OR

4 - 35Inspection and AdjustmentAdjustment Thread presser base up/down position adjustment1. Loosen the 4 screws 1. 2. Adjust the vertical position of

4 - 36Adjustment Hoop sensor adjustment1. Attach the hoop stay assembly to the feed unit.2. Enter the test mode, and press [MAIN BOARD TEST MODE] and

4 - 37Inspection and AdjustmentAdjustment Upper Shaft Encoder Phase Adjustment1. Enter the test mode, and press [MAIN BOARD TEST] and then press [SENS

4 - 38Adjustment XY-guide origin adjustment1. Attach the hoop stay assembly to the feed unit.2. Attach the LL-hoop to the hoop stay assembly.3. Attach

4 - 39Inspection and AdjustmentAdjustment Cutter knife engagement adjustmentCheck that the engagement load of the movable and fixed knives when the mo

2 - 10Main partsMain unit11 Operation panel assembly removal1. Remove the 6 screws 1, and then remove the operation panel assembly1. 1 11112 Thread ta

4 - 40Adjustment How to reset the counter of the maintenance.When the operating time of the machine becomes 1500h, because following the MSG is displa

4 - 41Inspection and AdjustmentAdjustment1. Turn the [POWER] switch on with the [START/STOP] button, [THREAD CUT] button, [THREAD GUIDE]button simulta

4 - 42

5 - 15Failure Investigationfor Electronic Parts* Perform resistance measurements after turning off the power and detaching the connectors to be measur

5 - 2Failure Investigation for Electronic PartsError message listError message list See page Error message list See pageInappropriate needle stop posi

5 - 3Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsThe power is not turned on.• The power is not turned on

5 - 4Failure Investigation for Electronic PartsThe power is not turned on.Change power switch assemblies and power leads.When the power cord is remove

5 - 5Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsThe power is not turned on.From the previous pageConnect it p

5 - 6Failure Investigation for Electronic PartsThe touch panel does not work.The touch panel does not work.Connect it properly.NYConnect it properly.I

5 - 7Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsThe panel switch does not work.• The panel switch does not wo

2 - 11Main partsMain unitDisassembly 13 Tension base removal1. Remove the screw 1, and then remove the cord clamp NK-4N from thearm bed. 2. Remove the

5 - 8Failure Investigation for Electronic PartsThe needle bar does not move normally.The needle bar does not move normally.Connect it properly.NYYIs t

5 - 9Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsThread breakage detection does not function normally.Thread b

5 - 10Failure Investigation for Electronic PartsThe hoop does not move normally.The hoop does not move normally.Connect it properly.NYConnect it prope

5 - 11Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsThe hoop does not move normally.Change Y area sensor PCB.Doe

5 - 12Failure Investigation for Electronic PartsThe main shaft does not rotate normally.The main shaft does not rotate normally.Change main shaft enco

5 - 13Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsThread is not cut normally.Thread is not cut normally.Connec

5 - 14Failure Investigation for Electronic PartsThe wiper does not function normally.The wiper does not function normally.Connect it properly.NYYIs th

5 - 15Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsA needle is not threaded normally.A needle is not threaded n

5 - 16Failure Investigation for Electronic PartsThe picker does not function normally.The picker does not function normally.Connect it properly.NYYIs

5 - 17Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsLED light does not turn ON.LED light does not turn ON.YYIs t

i1. Outline of Mechanism ...1 - 1Main Mechanisms ...

2 - 12Main partsMain unit15 Needle plate base assembly removal1. Remove the 2 screws 1 to disconnect the cutter link assembly 1. 2. Remove the 2 screw

5 - 18Failure Investigation for Electronic PartsEmbroidery card cannot be used normally.Embroidery card cannot be used normally.Change panel PCB.NYDoe

5 - 19Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsUniversal serial bus (USB function) cannot be used normally.

5 - 20Failure Investigation for Electronic PartsUniversal serial bus (USB) cannot be used normally.Universal serial bus (USB) cannot be used normally.

5 - 21Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsThe hoop sensor does not function normally.The hoop sensor d

5 - 22Failure Investigation for Electronic PartsThe hoop sensor does not function normally.Change FFC (SML2CD-C).NIs the resistance between each termi

5 - 23Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsThe hoop sensor does not function normally.YChange Y area se

5 - 24Failure Investigation for Electronic PartsError messageY-axis home position error(Dialog message)Connect it properly.NYChange Y area sensor PCB.

5 - 25Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsError message• Main motor encoder signal error• Main motor e

5 - 26Failure Investigation for Electronic PartsError messageMain motor current error(Dialog message)Connect it properly.NYChange main shaft motor.Is

5 - 27Failure Investigation for Electronic PartsFailure Investigation for Electronic PartsError message• Sewing data error• Panel communication error•

2 - 13Main partsMain unitDisassembly 18 Picker bracket disassembly1. Remove the retaining ring E2, and then remove the picker assembly andthe spring

5 - 28Failure Investigation for Electronic PartsError message• Power supply voltage error (24V high)• Power supply voltage error (24V low)• Power supp

6 - 16Maintenance

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7- 17Special Instructions of WiringHead wiring...7 - 2Arm wiring...7 - 3Base

7 - 2Wiring instructions Head wiring1.Inside of case2.Back of caseDo not allow the grounding wire to pro-trude from the case.Do not allow the groundin

7 - 3Wiring instructionsWiring instructions Arm wiring1.Section above the arm (1)2.Section above the arm (2)Needle position sensor lead wireColor chan

2 - 14Main unitMain parts20 Cutter unit final assembly and picker final assembly removal1. Remove the screw 1, and then remove the cord clamp NK-5N an

7 - 4Wiring instructions3.Left side of arm.4.Right side of arm (1)Cover all lead wires with a spiral tube and secure the tubeMake sure that the bulge

7 - 5Wiring instructionsWiring instructions5.Right side of arm (2)6.Right side of arm (3)Thread guide baseLED lead wireNo slack allowed.USB lead wire

7 - 6Wiring instructions Base wiring1. Left side of base2.Right side of baseMake sure that the lead wire is in the trench on the base.Hang the lead wi

7 - 7Wiring instructionsWiring instructions Main PCB wiring1.Upper section of main PCB2.Lower section of main PCBMain shaft shutterHook BSpiral BHook

7 - 8Wiring instructions Bed wiring1.BedPK motor bracket hookCT motor bracket hookPicker sensor lead wirePicker motor lead wireProtection sheetLower s

7 - 9Wiring instructionsWiring instructions Y-feed cable wiring1.Y-feed cable (1)2.Y-feed cable (2)FFC (SML2CD-Y)FFC protection sheetPosition the FFC

7 - 10Wiring instructions3.Y-feed cable (3)Connector BConnector CConnector D X-motor lead wireMake sure that the slack is above the cord clip.FFC (SML

7 - 11Wiring instructionsWiring instructions X-feed cable wiring1.X-feed cable (1)2.X-feed cable (2)Align the left end with the slit.X-cable fixing sh

7 - 12Wiring instructions3.X-feed cable (3)4.X-feed cable (4)Hoop sensor lead wireX-carriage AX-cable fixing sheet C ScrewX-carriage BFFC (SML2CD-X)Co

7 - 13Wiring instructionsWiring instructions5.X-feed cable (5)X-carriageCheck that the FFC is parallel to the X belt.Screw adjustment window for X-cab

2 - 15Disassembly Feed unitMain unit

7 - 14Wiring instructions Panel wiring1.Surface of LCD module2.Inside of panel (1)LCD moduleFront cover spacer BApprox. 1 mm from edge of displayGroun

7 - 15Wiring instructionsWiring instructions3.Inside of panel (2)4.Inside of panel (3)Back light lead wireInverter lead wireSW lead wirePCB bracket PC

7 - 16Wiring instructions5.Back of panelUSB lead wire ACord bushingPanel lead wireAlmost the same lengthMake sure that the tab is facing down.Align ri

2 - 16Main unitFeed unit1 T-belt (Y-guide) removal1. Remove the 2 screws 1, and then remove the Y-belt presser 1 (one eachon left and right). 2. Remov

2 - 17Feed unitMain unitDisassembly 2 Feed final assembly removal1. Draw the feed final assembly toward you.2. Unlock the connector of the Y-area sens

2 - 18Feed unitMain unit3 Y-motor final assembly removal1. Remove the screw 1, and then remove the cord clamp NK-4N and the Y-motor assembly's le

2 - 19Feed unitMain unitDisassembly 5 Y-driving shaft assembly removal1. Remove the 2 screws 1, and then remove the 2 bushing pressers A. 2. Remove th

2 - 20Feed unitMain unit7 FFC and X-area sensor assembly removal1. Remove the screw 1, and then remove the sheet. 2. Remove the 2 screws 2, and then r

2 - 21Feed unitMain unitDisassembly 10 X-carriage A assembly and X-carriage B assembly removal1. Remove the 4 screws 1, and then remove the hoop senso

iiNeedle thread unit ...2 - 26Needle thread assembly removal

2 - 22Feed unitMain unit12 Hoop sensor removal1. Remove the screw 1.2. Remove the screw 2, and then remove the hoop lever. 3. Remove the nut 1 and the

2 - 23Feed unitMain unitDisassembly 14 T-belt (Y-drive) removal1. Remove the 2 screws 1, and then remove the tension pulley plateassembly and the T-be

2 - 24Main unitFeed unit16 Y-carriage L disassembly1. Remove the 2 screws 1, and then remove the connect PCB final assembly. 2. Remove the 2 screws 2,

2 - 25Feed unitMain unitDisassembly 17 Y-carriage R disassembly1. Remove the 4 screws 1, and then remove bearing case Y from the Y-carriage R (2 locat

2 - 26Needle thread unitMain unit

2 - 27Needle thread unitMain unitDisassembly 1 Needle thread assembly removal1. Remove the 6 screws 1, and then remove the needle thread assembly 1. 1

2 - 28Needle thread unitMain unit3 Rack and hook holder link removal1. Remove the 2 screws 1, and then remove the needle thread sensorassembly. 2. Rem

2 - 29Disassembly Needle bar change unitMain unit

2 - 30Needle bar change unitMain unit1 Change box removal1. Remove the 2 screws 1, and then remove the change box assembly 1. 112 Change box disassemb

2 - 31Needle bar change unitMain unitDisassembly 3 Change box disassembly (Step 2)1. Remove the screw 1, and then remove the differential gear shaftas

iiiPower PCB assembly removal ...2 - 57Power PCB

2 - 32Thread wiper unitMain unit

2 - 33Thread wiper unitMain unitDisassembly 1 Thread presser base removal1. Remove the 4 screws 1, and then remove the thread presser base assembly1 f

2 - 34Main unitThread wiper unit4 Wiper guide and wiper sensor removal1. Remove the screw 1, and then remove the wiper sensor assembly.2. Remove the 6

2 - 35Thread wiper unitMain unitDisassembly 5 Wiper set disassembly1. Remove the nut (3, M4), spring washer (2-4), and wiper shoulder screw,and then r

2 - 36Needle bar unitMain unit

2 - 37Needle bar unitMain unitDisassembly 1 Needle bar case final assembly removal1. Remove the 4 screws 1, and then remove the needle bar case assemb

2 - 38Needle bar unitMain unit4 Thread take-up lever assembly removal1. Remove the 2 screws 1, and then remove the thread take-up shaft 1 andthe 6 thr

2 - 39Needle bar unitMain unitDisassembly 6 Needle bar removal1. Remove the screw 1 and the washer. (6 locations)2. Remove the screw 2. (6 locations

2 - 40Needle bar unitMain unit9 Case positioning plate disassembly1. Remove the nut (2, M4) 1, spring washer (2-4), and plain washer (M4),and then rem

2 - 41Needle bar unitMain unitDisassembly 11 Case bracket disassembly1. Remove the 4 screws 1, and then remove the case guide US and the casebracket a

ivThread tension unit ...3 - 10Thread take-up bracket assembly

2 - 42Upper shaft unitMain unit

2 - 43Upper shaft unitMain unitDisassembly 1 Main motor final assembly removal1. Remove the 2 screws 1, and then remove the main motor final assemblya

2 - 44Main unitUpper shaft unit3 Driving jump assembly removal1. Remove the 2 screws 1, and then remove the driving jump assembly. 1

2 - 45Upper shaft unitMain unitDisassembly 4 Driving jump disassembly1. Remove the 2 screws 1, and then remove the J differential lever 1, thrustwashe

2 - 46Upper shaft unitMain unit5 Base needle bar removal1. Remove the screw 1, and then remove the J-clamp final assembly 2 andthe presser foot vertic

2 - 47Upper shaft unitMain unitDisassembly 7 Presser foot vertical base disassembly1. Remove the screw 1, and then remove the presser foot vertical pi

2 - 48Main unitUpper shaft unit9 Thread take-up driving lever disassembly1. Remove the screw 1, and then remove the thread take-up differential lever1

2 - 49Upper shaft unitMain unitDisassembly 10 Main shaft sensor final assembly removal1. Remove the screw 1, and then remove the main shaft sensor fin

2 - 50Upper shaft unitMain unit12 Pressure foot driving shaft assembly removal1. Remove the 2 screws 1, and then remove the 2 bushing pressers. 2. Rem

2 - 51Upper shaft unitMain unitDisassembly 14 Upper shaft assembly removal1. Remove the 4 screws 1, and then remove the 2 metal pressers. 2. Remove th

vCase positioning plate assembly attachment ...3 - 53Needle bar case

2 - 52Lower shaft unitMain unit

2 - 53Lower shaft unitMain unitDisassembly 1 Arm bed and base frame disconnection1. Mark the position where the arm bed is attached to the base frame.

2 - 54Main unitLower shaft unit4 Lower shaft removal1. Remove the 4 screws 1, and then remove the 2 bushing pressers. 2. Remove the 2 collar screws 2,

2 - 55Disassembly Power unitMain unit

2 - 56Main unitPower unit1 Power switch assembly and inlet removal1. Remove the 3 screws 1 and the 3 cord clamps (NK-6N), and then removethe power PCB

2 - 57Power unitMain unitDisassembly 2 USB PCB assembly and Y-area sensor assembly removal1. Remove the 2 screws 1 and the 2 cord clamps (NK-6N), and

2 - 58Main unitPower unit4 Power PCB disassembly1. Disconnect the power lead wire assembly 1 from the power PCBassembly 100 (or 200). 2. Remove the 4

2 - 59Power unitMain unitDisassembly 5 Adjust-bolt removal1. Remove the 4 adjust-bolt assemblies 1 from the base frame. 2. Remove the 4 nuts (2, M8) f

2 - 60Thread cut unitMain unit

2 - 61Thread cut unitMain unitDisassembly 1 Picker disassembly1. Remove the retaining ring E2, and then remove the washer and the pickerlink 1. 2. Rem

viThread take-up lever cover attachment ...3 - 96Operation pa

2 - 62Main unitThread cut unit2 Cutter unit disassembly (Step 1)1. Remove the retaining ring E2, and then remove the lever link assembly. 2. Remove th

2 - 63Thread cut unitMain unitDisassembly 3 Cutter unit disassembly (Step 2)1. Remove the lever gear 1. 2. Remove the retaining ring E2, and then remo

2 - 64Thread tension unitMain unit

2 - 65Thread tension unitMain unitDisassembly 1 Loosen the tension nut removal1. Loosen the tension nut 1, and then remove the washer 2, spring ,ten

2 - 66Thread tension unitMain unit3 Inner thread eyelet base removal1. Remove the 2 screws 1, and then remove the inner thread eyelet baseassembly fro

2 - 67Thread tension unitMain unitDisassembly 5 Upper thread eyelet base removal1. Remove the tension axis cap 1. (6 locations)2. Loosen the thread g

2 - 68Main unitThread tension unit7 Antenna disassembly1. Remove the 4 screws 1, and then remove the 2 antennas A, 2 antennas B,and antenna E assembly

2 - 69Thread tension unitMain unitDisassembly 8 Spool stand frame disassembly (Step 1)1. Remove the 6 spool pins 1 and the 2 sponges 2 from the spool

2 - 70Main unitThread tension unit10 Thread take-up lever cover disassembly (Step 1)1. Remove the 4 screws (1 2, 2 each), and then remove the thread h

2 - 71Thread tension unitMain unitDisassembly 11 Thread take-up lever cover disassembly (Step 2)1. Remove the 2 screws 1, and then remove the thread t

vii4. Adjustment (for PR620/BMP8) ...4 - 1Adjustment flow ...

2 - 72Main unitThread tension unit12 Thread take-up bracket disassembly*Key point• Disassemble the six thread take-up bracket assemblies.1. Remove the

2 - 73Disassembly Operation panelMain unit

2 - 74Operation panelMain unit1 Operation panel lever assembly removal1. Remove the 2 screws 1, and then remove the operation panel leverassembly 1 fr

2 - 75Operation panelMain unitDisassembly 3 Operation panel lever ASSY disassembly (2)1. Remove the 3 thumb bolts (M4L) 1, 3 spring washers (2-4) 2, a

2 - 76Operation panelMain unit6 Operation panel B assembly removal1. Remove the 4 screws 1, and then remove the operation panel B assembly1.2. Remove

2 - 77Operation panelMain unitDisassembly 8 Board case removal1. Remove the 2 screws 1, and then remove the board case 1.2. Remove the screw 2, and th

2 - 78Operation panelMain unit11 PCB attachment plate removal1. Remove the 6 screws 1, and then remove the PCB attachment plate 1.1112 LCD removal1. R

2 - 79Operation panelMain unitDisassembly 14 Button removal1. Remove the 3 screws 1, and then remove the switch PCB assembly fromthe operation panel A

2 - 80

3 - 13Assembly Main unit Operation panel .........3 - 2Thread tension unit.......3 - 10Thread cut unit...