Service Manual
Contents
1. 13 2 Needle entry lateral in the throat plate needle plate sasssssssusssssssussusssscsussnsssssussossusussessssuseussoscsuseusssss 13 3 Height of the presser foot sasssssssssssssussunsenssssssssusssnssssssssuussusenssssususssssussnssssessssussusssssssesususssusssssssessssessunun os 13 4 Height ofthe feed dog sasssssssssssssssssususssussussssssssssususussseusunsssssssssususssusuusunssessssasusssusussussnsssssssssusssuseusensonssuss 14 5 Adjusting the needle to hook timing nnne nennen nennen 14 6 Clearance between the needle and the blade point sessssssssssunssnsssususssssssusesssssssusenssescsussnssoscsussnsssseseuonos 15 7 Position of the detent plate of the inner hook position of the bobbin case opening lever 15 8 Adjusting the longitudinal feed sassssssssssssssusssssussussssussssssssasussssssssunsssssssssssusseusussensssssessssssussussessusssssssssussuss 1 6 9 Buttonhole change over switch jAAR A A A 1 7 10 Vertical position of automatic threader hook sassssssssususssssssususssssssusssssssasussussesssussussssususususssssuussssssusussonsn 1 7 11 Adjusting the ten2. 12 5 ADJUSTMENT 1 Height of the needle bar O Remove the face cover top cover and front panel Adjustment O Dimension from the lower end of needle bar pin to the race face of hook 28 72 mm O In case needle attached incline the angle from which the needle hole is visible by 0 to 5 to the right Hitched stitch prevention at the time of reverse stitch How to adjust 1 Make a gauge needle by cutting a household use needle to the length of 28 72 mm and attach it to the needle bar 2 Lower the needle bar up to the lowest lead point and slightly loosen the needle bar bushing set screw the extent that the needle bar does no slip down 3 Move the needle bar up or down by hand and turn the needle bar by 10 to 5 as shown in the figure so that the cut face of the gauge needle is aligned with the race face of the hook 4 Temporarily tighten screw and after re checking the adjustment condition tighten further the screw 59 x Gauge needle y Front 28 72 mm Lowest dead point Over hook a Race face fj 2 Needle entry lateral in the throat plate needle plate O Remove the top board Needle Needle entry O Bring the needle to the straight stitching position How to adjust Loosen screw Qin the needle entry adjusting collar O Adjust the needle entry by turning adjusting collar adjusting collar D Screw in the needle entry adjusting collar 15
3. the needle bar fame stud Attach the operating lever shaft receiving plate asm in place Then adjust the needle entry with respect to the predetermined three points referring to No 2 on page 13 and No 6 on page 15 Do not bend the connecting rod and the microcomputer circuit board When setting the needle bar crank on the counterweight fix the crank by tightening the screw in the flat part of the crank Check the lateral movement of the needle bar 11 4 CIRCUIT BOARD CONNECTING DIAGRAM Manual circuit board Slide V R Fuse 3 A 2 pcs m c c board for 120V Fuse 3 15 A 2 pcs m c c board for 230V Power circuit board for 230V Micro computer circuit board J1 Motor drive ss J5 Power cord CN1 Manual circuit board GRA CN2 One stitch switch PRP CN3 Main shaft detector circuit board RED J4 Power transformer CN4 Button hole switch WHT CN5 Lamp WHT CN6 Thread trimmer switch BLU CN7 Winder switch GRA 8 M computer c board indicator c board connecting wire 9 Power circuit board J1 BLK CN10 Needle bar rocking detector circuit board ORN CN11 Needle bar rocking STM BSTM CN12 Feed detector circuit board STM WHT CN13 Feed STM FSTM CN14 Foot controller V R YEL CN15 Motor pulse detector circuit board BLK CN16 Power transformer 11 V AC 23 V AC line
4. in the thread trimming switch Screw in the thread trimming switch Screw in the one stitch switch 2 Timing of thread trimming O Remove the top board and the throat plate needle plate Page 5 O The timing adjusting groove positioning groove in the thread trimming cam should come to the top when the needle bar is in its lowest dead point How to check the timing of thread trimming Lower the operating lever until the needle bar is brought its lowest dead point At this time the moving knife should be move a little The moving knife moves a little since the moving knife roller fits in the timing adjusting groove in the thread trimming cam How to adjust Loosen two screws the main shaft pulley and adjust the timing of thread trimming Timing adjusting groove in the thread trimming cam 22 QD Screw the main shaft pulley 2 0 mm hexagon 3 Position of the moving knife draw in position of the moving knife O Remove the throat plate needle plate O A clearance of 0 5 to 1 5 mm should be provided between the moving knife blade and the end face of square hole in the moving knife guide plate upper when lowering the operating lever How to adjust 1 As for the left and right stopping positions of the moving knife guide plate temporarily tighten the screw D at the extreme right front position of the moving knife guide plate Secure the clearance of 0 7 mm from
5. E 2 oe i toe Needle hole in the throat plate needle plate 3 Height of the presser foot O Remove the face plate cover Page 5 O Left the presser foot until the sole of the presser foot is positioned 5 5 mm above the top surface of the throat plate needle plate How to adjust Loosen presser bar position bracket and adjust the height of presser foot O Adjust the orientation of presser foot so that it is in parallel with the groove in the throat plate needle plate Presser foot Throat plate needle plate 5 5mm 0 3 Screw in the presser bar position bracket 2 5 hexagon 4 Height of the feed dog O Remove the throat plate needle plate to check the adjusting place How to adjust 1 Height of the feed dog is the height of the feed dog portion corresponding to the position of the needle hole center of the throat plate needle plate measured from the upper surface of the throat plate needle plate 2 Insert a hexagonal screwdriver into the hole for the screwdriver located in the rear side of the free arm and loosen the hexagonal screw 1 5 3 Insert a small slit screwdriver form the small hole in the throat plate needle plate turn the adjusting screw and adjust so that from the upper surface of the throat plate needle plate to the upper end of the feed dog should become 0 9 to 1 1 mm when the feed dog is at its height point 4 After the adjustment tighten
6. Presser foot holder Needle set screw Needle Presser foot Hook cover button Bobbin 3 ASSEMBLY DISASSEMBLY Frame components 1 Top cover top board Top cover Rear right section Top board Face plate cover Top board screws Disassembly Assembly Point to be checked When removing the top cover bend hinge The top board be removed with the arm cover attached Remove five screws the top board Lifting the top board draw out the connector Do not remove the screw in the bobbin thread winding amount adjusting plate Set the top cover in place with closed Set the top board on the frame Set the top board with its rear right section accurately fitted with the face plate cover hinge easily bend when closing the top cover Be careful to connect the connector without fail Take care not to allow the top board to become loose 2 Handle face plate cover Preparation required O Remove the top board Face plate Handle Sover asm 9 Screw in the face plate cover Disassembly Assembly Point to be checked Remove one retaining ring of the handle Remove handle Loosen screw 3 in the face plate cover and remove the cover Set the handle on the frame Attach the retaining ring to the handle Set the cover
7. IE NR COMPUTER SEWING MACHINE HZL T100 SERVICE MANUAL XN CONTENTS 1 SPECIFICATIONS lt gt lt lt 2 2 2 2 1 2 CONFIGURATION 14 21d rrr ra nne aua o run nara nana ho uhr unu r 4 3 ASSEMBLY DIASSEMBLY 5 Frame components Functional components 1 Top cover top board 5 1 Microcomputer circuit board main shaft 2 Handle face plate cover mA 5 detecting nnne nnne 7 3 Operating lever 5 2 Motor Control mmm 7 4 Front panel 6 3 Idler bobbin winder base asm sassssssusssssusensasusassssos 8 5 Bed base cylinder bed lower cover 6 4 Transformer power switch mmm 8 5 Needle bar connecting rod needle throwing STM 9 6 Face plate asm sassssssssssssssssssussssssssseusssscsesssssssaseuonos 9 7 Main shaft operating lever receiving plate 10 8 Cylinder bed receiving plate asm nnn 10 9 Needle bar frame stud asm sesssssssssssussssssssnssesasussuns 11 EN 4 CIRCUIT BOARD CONNECTING DIAGRAM 12 5 ADJUSTMENT pannaan 13 Sewing components 1 Height of needle bar
8. O Remove the face plate cover Remove the front panel Stopper of the cover D Screw in the motor Pass the leads through the hole in the cover 9 Screw in the electrical box Disassembly Assembly Point to be checked Remove two screws T in the motor Lift stopper in the cover and remove the cover Remove the motor belt and the con nector then remove the motor Remove screws in the electrical box Attach the electrical box in place and fix it with the screws Set the leads in place See page 12 Fit the leads of the motor in the Fit the cover to the electrical box indented section of the cover Pass leads 2 through the hole the cover Attach the motor in place Take care of the belt tension 7 3 Idler bobbin winder base asm Preparation required O Remove the top board and the handle O Remove the face plate cover O Remove the front panel O Remove the microcomputer circuit board QD Screw in the idler Center of the belt Screw in the bobbin winder base Top surface Disassembly Assembly Point to be checked Loosen screw in the idler then pull the idler asm toward you Remove two screws 2 in the bobbin winder base and remove the base Set the bobbin winder to its operating state by setting the shaft to
9. be checked Loosen screw 2 in the face plate of the panel You may loosen and tilt the lamp instead of loosening screw Loosen screw at the center of panel Loosen two screws in the bottom of panel order to release the engaging section to eliminate loose fitting remove the panel while lifting it Assemble through 5 without fail Tighten the four screws which have been loosened Caution Make sure that the indicator connecting cable has been connected Fit needle thread guide pin in the groove on the front panel in the correct manner 5 Bed base cylinder bed lower cover 3 Screw in the cylinder bed lower cover Screw in the rubber seat A EE 5 v9 6 e D Screw in the bed base Disassembly Assembly Point to be checked Remove three screws Q in the rubber seat A Remove three screws 2 in the bed base Remove two screws in cylinder bed lower cover and remove the cover Attach the bed base on the frame Fix the bed base by tightening the screw which have been removed Set the three rubber seat A on the bed base with accuracy Functional components 1 Microcomputer circuit board main shaft detecting Preparation required O Remove the top board Remove the face plate cover Remove the front panel Radiating plate
10. its right side Check the timing of thread trimming then attach the idler asm Attach the bobbin winder base in place and fix it with the screws Refer to No 2 on page 12 for the Belt tension The belt should slacken When winding a bobbin the bobbin correct timing of thread trimming by 4 to 6 mm when applying a 200g loadto center of the belt winding switch should be turned OFF 4 Transformer power switch Preparation required O Remove the top board and the front face cover O Remove the front panel O Remove the microcomputer circuit board O Remove the idler and the motor Remove the timing belt O Remove the cover of the electrical box Metal fittings D Screw in the transformer 3 Screw in the power switch Disassembly Assembly Point to be checked Remove two screws Q in the trans former Metal fittings come off simulta neously with the screws Remove the connector from the printed circuit board Remove two screws in the power switch Remove the connector from the printed circuit board Attach the transformer to the frame and fix it with the screws Attach the power switch to the frame and fix it with the screws Refer to page 12 for how to connect Take care of the polarity of the the connector connector 5 N
11. machine remove the power plug When assembling be careful about the electrical cord being caught with other components damage to the covered parts of the cord or miswiring When replacing the part s use the genuine part s 1 SPECIFICATIONS 1 Speed regulating components Slide control system Stepless speed change gear For straight stitching 116 to 750 rpm For stitching methods other than straight stitching 116 to 500 rpm For winding a bobbin 116 to 700 rpm When using this controller the slide control mechanism is inoperative The control speed is same as the speed controlled by the slide control mechanism 2 Table stand components Main unit case The main unit case covers the components exclude the under cover and the handle Handle Designed to be tilted from the main unit of the sewing machine 3 Bed type Cylinder bed and flat bed Quickly change over by a finger control 4 General mechanism 1 Thread take up Link type thread take up with slit for one touch utility thread eyelet 2 Hook Full rotary vertical axis hook 3 Pressure regulator Constant pressure applying system 4 Lighting mechanism Built in face plate cover The power switch of the sewing machine is commonly used as the lamp Switch 5 Needle thread stand Horizontal type thread stand built in the top board 6 Bobbin thread winder Bobbin winder shaft sliding method The bobbin winder starts winding a bobbin
12. the screw SS a a 42 1 0 9 to 1 1 mm B Hn 5 Adjusting the needle to hook timing 1 510 1 8mm Remove the throat plate needle plate bed base and free arm lower cover Straight stitch Checking method left position Select the straight stitch left position Check the needle entry point and the height of the needle bar are correct Lowest dead point 1 2 3 Remove the throat plate needle plate 4 5 Turn the hand wheel to place the needle bar at its lowest dead point Further turn the handwheel by hand to raise the needle bar little by little and stop the needle bar at the point B where the center of the needle is aligned with the tip of blade point of hook At this time check that the dimension C from the tip of the blade point of the hook to the upper end of the needle hole is 1 5 to 1 8 mm If the dimension is not correct perform following adjustment How to adjust Loosen the 2nd set screw in the hook driving gear Set the zigzag width to 5 mm Select 03 and make max needle throw Turn the handwheel by hand and loosen the 1st set screw in the hook driving gear and move the gear in the rotating direction so that the tip of the blade point of the hook comes to the center of the rear side of the needle when the needle throws to the right side and the needle bar comes up 1 7 0 075 mm from the lowest dead point At this time pay attention to both th
13. with the Screws Set the timing belt and the motor belt in place Check the torque and thrust play of the main shaft Check the retaining position of the leads 8 Cylinder bed receiving plate asm O Remove the top board and the bed base O Remove the cylinder bed lower cover O Loosen the idler See No 3 on page 8 link engaging diagram Screw in the cylinder bed receiving plate Knife change over lower Knife change over lower link QD Timing belt large Disassembly Remove timing belt large from the hook driving shaft pulley Remove five screws in receiving plate Remove the receiving plate of the cylinder bed Remove knife change over lower link from engaging section Assembly Engage the knife change over lower link with the receiving plate and fix them with the five screws Put the timing belt large in place Check the needle entry and the clearance provided between the needle and the blade point of the hook Point to be checked uniform clearance should be provided between the frame and the throat plate needle plate Check the torque of the hook driving shaft When putting the timing belt in place refer to the description indicating the timing of thread trimming No 2 on page 22 10 9 Needle bar frame stud asm Preparation required O Remove the presser foot holder a
14. 8 Dimensions and weight Dimensions Weight 9 Electric rating Entire unit of the sewing machine Lamp Continuous stitch patterns 43 One point stitch patterns 57 Total 100 stitch patterns Buttonhole Buttonhole small Buttonhole large Eyelet buttonhole Deco rative buttonhole Approx 1 stitch is sewn at the speed of 116 rpm after the start switch is turned ON Needle bar can be stopped in its highest position or lowest position by using the synchronizer shielding plate and photo interrupter Needle bar stops in its lowest position at the time of the end of sewing Needle bar stops in its highest position when the stitch pattern is selected while it stops in its lowest position Needle bar stops in its highest position at the time of thread trimming bobbin winding or lifting the presser foot A needle can be attached on the machine only when installing direction of the needle is correct If the sewing machine rotation is locked for two seconds the power to the motor is automatically turned OFF When the temperature of the motor ab normally rise the power to the motor is turned OFF Thermal cut After the temperature of the motor has sufficiently lowered the machine can be started Integral witch the inner hook Presser feet supplied as standard accessories of the machine are stored in the auxiliary bed of the main unit of the sewing machine When the lock stitch is set 3 stitches of the lock stitch are
15. D Cable clip 3 Screw in main shaft detecting circuit board Metal fittings o Screw in the microcomputer Screw in the radiating plate circuit board Disassembly Assembly Point to be checked Remove connectors 14 connec Attach the microcomputer circuit Caution tors board on the frame and fix it by Removing attaching the Cut cable clip and remove the tightening the two screws microcomputer circuit board lead from the radiating plate Connect the connectors Be sure to carefully remove the micro Remove two screws 2 the micro See page 12 computer circuit board taking care not to computer circuit board Do not remove the screw in the radi ating plate attached by an asterisk Remove one screw 3 in the main printed circuit board in place and fix radiating plate marked with a double circle shaft detecting plate circuit board and it using the screw to come in contact with the motor belt remove the circuit board prevent the printed circuit board from com ing in contact with the metal fittings marked Attach the main shaft detecting plate with a double circuit and not to allow the transformer and other components shielding plate of the main shaft should not come in contact with the sensor when installing the printed circuit board in place 2 Motor control box Preparation required O Remove the top board
16. automatically per formed at sewing start amp end In case of the one point stitch pattern the lock stitch switch is automatically turned ON Pre tension Disc pressure type thread tension with 2nd tension Memory capacity 20 pcs Every time the clear key is pressed the stitch patterns set are cleared from the last one When keeping pressing the clear key all the stitch patterns set are cleared 400 mm width x 175 mm depth x 280 mm height 8 5 kg 220 240 V 85 W 50Hz 120 0 85A 60Hz 12 V 5 W 2 CONFIGURATION Thread spool cap Pattern display panel Spool pin Bobbin winder thread guide Bobbin winder Thread tension dial Manual stitch length Manual stitch width button amp lever button amp lever Top cover Liquid crystal display LCD Face cover Pattern Number selector buttons Automatic backtack button Pattern No increase decrease selector button Pattern memory button Presser foot lifter thread trimming leve Sewing speed setting lever When speed controller is not used Start stop button When speed controller is not used Reverse stitch button Pattern clear button Auxiliary bed Accessory box Straight stitch direct button Stitch balance control Handle Hand wheel Speed controller receptacle Power Light switch Power cord receptacle Speed controller Buttonholing lever Needle threader Presser foot release button
17. by operating the start stop switch 7 Needle threader One touch 8 Presser foot Exclusive transparent presser foot 9 Replacement of presser foot Snap on off type 10 Power switch 2 step power switch commonly used as the lamp switch 11 Lubrication No lubrication is required under the normal operating conditions Lubricationg the inner hook is prohibited 12 Cable A 1 9 m long power cable is removable 5 Needle bar rocking mechanism 1 Needle bar rocking method 2 Straight stitching 3 Stitch width 4 Adjustment of stitch width 5 Standard line 6 Needle bar driving system 6 Feed mechanism 1 Feed amount 2 Reverse feed amount 3 Adjustment of feed amount 4 Reverse feed stitch 5 Feed mechanism 7 Special purpose mechanism 1 Automatic thread trimmer 2 Automatic needle threading device 3 Automatic buttonholing 4 Selection of stitch patterns By the arc method Left center right Max 6 mm depending on the stitch pattern By sliding the lever The stitch width adjusting mechanism is effective when the manual operation indication LED lights up When manually adjusting notice of change over of the set value is given by the buzzer sound As for the part of automatic set value the notice is given by the flash on off of LED Left standard line By stepping motor 0to 4 mm 0to 2 4 mm By sliding the lever The feed amount adjusting mechanism is effective w
18. crew and move the tension disk releasing plate so that a clearance of 1 to 1 5 mm is provided between the 2nd tension disk and the face plate Then securely tighten the screw 3 Tension disk releasing plate 1to1 5 mm 19 11 4 Adjusting the needle thread tension Remove the face cover top cover front panel How to adjust 1 Remove to the front panel and make a condition that the arm cover is attached Example Polyester thread 70D 1X2 Z through the base tension pre tension and 1st tension Use a thread of diameter that can pass through the groove section of the pre tension disk and that the tension of the pre tension is Fine thin thread Pre tension not put on the thread 2 Place right above the number among the numbers on the tension knob Groov 3 Raise the operation lever and pass a fine thin thread of polyester o9 A 4 Lower the operation lever and attach the tip of fine thin thread to the tension gauge Then loosen the nut and turn the screw so that the tension becomes 0 107 0 019N 11 29 The thread should not touch the components around the 2nd tension Turn the screw clockwise Decrease the tension Turn the screw counterclockwise Increase the tension 5 After the adjustment tighten the nut 6 Then adjust the total tensions base tension pre tension 1st tension and 2nd tension Replace the thread with the Dual Duty 50 and loosen the nut of the 2nd tension and t
19. e rotating direction and the axis direction and adjust by temporarily tightening the 1st set screw as the black lash of the hook driving gear with the hook side gear changes according to the position of the hook driving shaft direction of the hook driving gear Zigzag width 5 mm Outer hook i Right position N 2nd Set screw 1st Set screw 72 zT E Large y d Back lash Lowest dead point 1 7 mm Small 14 6 Clearance between the needle and the blade point Blade point O Remove the front panel Page 6 clearance of 0 02 to 0 07 mm should be ge provide between the center of the needle and 0 02 to the blade point of the hook when the needle which is ascending from its lowest dead point meets the blade point O Check the clearance with the left and right needle entry points How to adjust 6 1 OLoosen screw Din the stopper and clamping screw Q in the needle bar frame stud OAdjust the clearance between the needle and the blade point using adjusting Needle screw 3 6 2 Olf the clearance between the blade point and asm the left hand side needle is different from 262 that between the blade point and the right i hand side needle loosen screw 6 move needle bar frame stud asm the right or left a 3 2 2 a ana ia Screw in the needle bar clearance Chec t le clearance with t e frame stud guide screws tigh
20. e screwdriver groove of the pattern adjusting knob is not flush remove the cover of the pattern adjusting knob and rearrange so that the knob is in the flush position Start of sewing 1 2 3 4 Adjust from the third pattern 5 Reverse feed is large lush is large Pattern adjusting knob Power switch OFF Start stop button 16 2 Removing the cover sert a small sized slit screwdriver into the cover and raise it in the direction of the arrow mark LCD display 9 Buttonhole change over switch O Remove the top cover Page 5 Adjustment Attach the BH buttonhole presser foot in place and lower the presser foot Lower the BH buttonhole change over lever 3 Select BH buttonhole 13 Normally in this state BH buttonhole error mark is not indicated on the LCD indication panel 4 Loosen screws D and in the BH buttonhole switch base Y When Y is moved while using screw as a fulcrum the BH buttonhole error mark is indicated 5 Gradually move Y in the direction to make the BH buttonhole error mark go out stop Y at the position where the mark goes out and tighten screws 2 In addition move the presser foot up or down to check that the mark goes out 6 Place a sheet of paper under the BH buttonhole presser foot and make the sewing machine run idle without threading to check the return position of the buttonhole and stop state Perfo
21. eccentric collar The eccentric collar should face you D Screw in the eccentric collar of knife 23 5 Adjustment of the knife disengaging plate Engagement of the disengaging plate and the thread trimming cam O Remove the throat plate needle plate and the front panel clearance of 0 5 0 3 mm should be provided between knife disengaging plate D and moving knife link roller when the operating lever is positioned horizontally How to adjust O Loosen screw 3 and adjust the knife disengaging plate using the eccentric shaft How to check Turn eccentric shaft until moving knife change over link loosen once OThen turn eccentric shaft until the moving knife change over link Tighten screw Gat that position Enlarge view 0 5 0 3 mm Moving knife link roller Screw in the thread trimming 4 Eccentric shaft Knife change over lower link link adjusting plate QD Knife disengaging plate 6 Looper stroke vertical stroke O Remove the throat plate needle plate and the bed base Page 6 O Remove the cylinder bed lower cover Page 6 When the operating lever by one step approx 43 looper should ride over projecting section of the inner hook The looper should not come down even if further lowering the lever approx 55 How to adjust Loosen screw and move it to the right or left Projecting section of D Looper the
22. eedle bar connecting rod needle throwing STM Preparation required O Remove the top board O Remove the face plate cover O Remove the front panel O Remove the microcomputer circuit board T 0G 9 9 9 Screw the needle throwing STM Disassembly Assembly Point to be checked Remove screw QD in the needle entry Fix the needle throwing STM with the adjusting collar and remove compo screws nents 2 3 and Remove E ring of the needle bar Check the performance of the needle connecting rod shaft throwing STM and the needle bar Then remove washer 5 and needle frame bar connecting rod Remove two screws 9 in the needle Attach the connecting rod in place Do not bend the connecting rod throwing STM then remove STM step Attach the components which have Be sure to attach the components ping motor been removed in place properly F 6 Face plate asm Top view of frame Screw in the face plate asm Preparation required jnm O Remove the top board geo O Remove the face plate cover O O Remove the front panel dese ei Js 2 O He Disassembly Assembly Point to be checked Remove two screws in the face plate gt Attach the face plate asm onthe Make sure that the front panel and the asm then remove the face plate frame and fi
23. hen the manual operation indication LED lights up When manually adjusting notice of change over of the set value is given by the buzzer sound As forthe part of automatic set value the notice is given by the flash on off of LED The machine performs reverse feed stitching at low speed only when the Switch is ON By a stepping motor The moving knife trims the thread while the main shaft makes a revolution or a shaft revolution form its lower stop position by setting the operation lever to the thread trimming position 116 rpm The hook automatically rotates and returns to its home position by lowering the threading lever Auto return type full automatic buttonholing Buttonhole size can be specified as desired When the buttonhole is fin ished the machine automatically stops after performing fastening stitching The machine gives an error message on the LCD to prevent the operator from starting the machine without setting the machine for the buttonholing Straight stitch Direct selection by the touch switch Other stitch patterns by shift selection 99 stitch patterns Shift direction change over switch is provided 5 Number of stitch patterns 6 Slow start function 7 Constant stop position of the needle bar 8 Prevention of incorrect needle insertion 9 Prevention of overheat 10 Bobbin case 11 Presser foot storage box 12 Automatic lock stitch 13 Thread tension unit 14 Memory
24. iding the thread trimming link installing plate A up or down In case needle is excessively low Lower the In case needle is excessively high Raise the A Hand wheel Needle 12 56 0 3 mm Throat plate Needle plate 25 IE CR JUKI CORPORATION 8 2 1 KOKURYO CHO CHOFU SHI TOKYO 182 8655 JAPAN PHONE 81 3 3480 5034 FAX 81 3 3480 5037 Copyright 2002 JUKI CORPORATION All rights reserved throughout the world 29363405 03 5 Printed in Japan E
25. inner hook 9 Screw in the looper innerlocking pin 2 0 mm hexagon 24 7 Adjusting the position of knife O Remove the throat plate needle plate Position of the moving knife How to adjust 1 Turn OFF the power switch and turn the handwheel in a condition that the operation lever is lowered to protrude to moving knife Then slowly return the handwheel 2 When the section B of the moving knife base has come to the looper position in the figure stop the movement of the moving knife Then check the position and dimension 0 to 0 5 mm of the looper and the moving knife base If the position is incorrect perform following procedure 3 Following the aforementioned procedure 1 protrude the moving knife and slightly loosen two set screws D the moving knife base to the extent that the moving knife base can be moved 4 Turn the eccentric shaft and adjust the position and dimension The securely tighten the set screws D Moving knife B 8 Stop position of thread trimmer O Remove the face cover top cover and front panel How to adjust 1 Set the operation lever in thread trimming lower the lever condition 2 Turn the motor pulley by hand and stop at the position where the needle bar stops 3 At this time measure the distance from the upper surface of the throat plate needle plate to the tip of needle Make sure that the distance is 12 56 0 3 mm 4 Loosen two screws and adjust the position by sl
26. nd the needle O Remove the top board and the face plate cover O Remove the front panel O Remove the screw located at the upper right section of the microcomputer circuit board O Remove the connectors J2 J3 and J6 through J8 O Cut the cable clip O Remove the operating lever shaft receiving plate asm ORemove the joint left of the needle bar connecting rod O Loosen the screw in the needle bar crank O Bring the moving knife to the rightmost end of its stroke 3 Screw in the needle bar frame stud Needle bar crank 6 Needle bar frame stud Counterweight C Hndle retaining plate Needle bar frame stud adjusting screw Needle bar frame stud fixing screw Disassembly Assembly Point to be checked Remove needle bar frame stud fixing screw 1 Loosen needle bar frame stud adjusting screw Q Remove two screws in needle bar frame stud Draw out needle bar crank 2 from counterweight 5 Atthis time draw needle bar frame stud to the left so that it opens Disconnect the knife change cover upper link Removing the handle and handle retaining plate will allow you to carry out the aforementioned disassembling procedure with ease Connect the knife change over upper link properly Set the needle bar crank in the counterweight Fit the needle bar frame stud fixing screw in place Tighten the two screws
27. of 1st tension can be adjusted because of the machine construction 1 By inserting a small sized slit screwdriver into the center of the groove located in the rear side of the tension knob the engagement of the knob and the tension cam be disengaged 2 Adjustment can be performed by moving the tension cam or the knob to the right or left However the adjustment should be performed within the 4th tooth of the right or left side In case the adjustment more than 4th tooth is necessary re check the tension components For the angle the adjustment is in the range of 15 left or 15 right For the reference there are 4 small holes at the rim of the knob and the angle between the respective small holes is in a unit of 15 each 18 11 2 Opening amount of the pre tension disk Remove the top cover How to adjust 1 When raising the operation lever loosen the screw D and move the tension disk releasing link adjuster plate to the left and so that the pre tension disk opens by approx 1 mm Then securely tighten the screw Caution Install the pre tension asm so that the pre tension disk is aligned with the 1st tension disk The securely tighten the screw However the tension of the pre tension is a fixed type and cannot be adjusted Pre tension Tension disk releasing link adjuster plate 11 3 Opening amount of the 2nd tension disk Remove the top cover and front panel 1 When raising the operation lever loosen the s
28. on the frame and tighten the screw Carefully check the installing direction of the handle Securely attach the two installing bosses in the face plate 3 Operating lever Preparation required O Remove the top board Screw in the operating lever Disassembly Assembly Point to be checked Loosen screw in the operating lever and draw out the operating lever Set the lever in place and tighten the screw Take care not to allow the screw to become loose while the sewing machine is in operation 4 Front panel Preparation required O Remove the top board O Remove the front cover O Remove the operating lever Side face of frame face frame Face plate 6 Needle thread guide pin guide shaft A Top surface of the frame Needle bar eq ERO connecting rod Main shaft Bobbin aia shaft 55 amp KG He 7 4 Ge ion Center screw of panel cover Screw in the side face of panel Bottom view of frame Engaging section to eliminate loose fitting Engaging section at the center of panel Engaging section of the panel Screw at the bottom of panel Disassembly Assembly Point to
29. rm re adjustment if there is any trouble When these tests are OK thread the machine head and perform the test sewing of the buttonhole NA BH buttonhole error mark BH buttonhole switch base Y 6 Screw in the switch mounting base Screw in the switch mounting base 10 Vertical position of automatic threader hook Remove the front panel Page 6 O The clearance provided between the top end of hook and the top end of the needle eyelet should be adjusted to 0 How to adjust O Bring the needle bar to its highest dead point Now you can see the screw in the threading needle bar guide through clearance Loosen the screw and adjust the position of the threading hook by moving the guide up or down Top end of the needle eyelet Top end of two hook 1 Screw in the threading needle bar guide 1 5 mm hexagon 17 11 Adjusting the tension 11 1 Principles of the thread tension mechanism 1 There are thick threads to thin threads Normal thread tension unit adjusts the thread tension by one thread tension unit against each thread HZL T100 by adopting the principle by which the tension is individually secured according to the thickness of the thread used enable the users to adjust the thread tension with ease Principle diagram Base tension Pre aie 2 1st tension 3 2nd i Role Base tension untwisiting Base tension performs to remove the twisting so as the thread twisting not
30. sion snsessnsnnsnsesssnsnsnnssannsnnnnnnnnnnnsnnsnnnnsnsnnssessenusnnnnnnnnnnnsnnsnsnnsnsnnnnessannnsnnnnsnnnnnnnnnnnnnnnnnnns 18 21 Automatic thread trimmer components 1 Position of the thread trimming switch and one stitch switch wassssssssusussssssssssusssscsssussssusususnsssssessensasusuns 22 2 Timing of thread trimming lt tenente tnnt 22 3 Position of the moving knife draw in position of the moving knife mmm 23 4 Adjustment of the knife driving link sasssssssssssesssssussnssssssesussessenssssssesesseusenssssssesussessenssssssussssessessenssesssusususes 23 Clearance between the driving link roller and the thread trimming cam 5 Adjustment of the knife disengaging plate eene nnne nennen nnne nennen 24 Engagement of the disengaging plate and the thread trimming cam 6 Looper stroke vertical stroke nnne nennen nnne 24 7 Adjusting the position of knife rennen enne entente 25 8 Stop position of thread trimmer tenente 25 Z WARNING To avoid the risk of fire electric shock injury to persons or damage to components especially keep the following When disassembling assembling or adjusting the sewing
31. tened Tighten screw while pressing the stopper against the frame Clamping screw of the needle bar frame stud 9 Adjusting of the needle 2 0 mm hexagon 7 Position of the detent plate of the inner hook position of the bobbin case opening lever O Remove the throat plate needle plate O Press the detent plate of inner hook against the detent plate attaching boss Deientpiae auaong base How to adjust O Loosen screw D and adjust the position Hook cover receiving plate right of the detent plate Inner hook 2 should be flash with the detent plate Clearance to allow the thread to come off the inner hook Q 2 e n 1 Screw the inner with each other hook detent plate 15 8 Adjust the longitudinal feed Preparation for adjustment 1 Hold pressing the start stop button after turning OFF the power switch Then turn on the machine so that the pattern is changed over to the pattern for adjusting the darning and dr is displayed in the LCD How to adjust Program for adjustment The sewing conditions 2 2 layer cotton broad Dual Duty 50 for both needle and bobbin threads and automatic high speed 3 Sew three pieces or more of the stitch pattern under the conditions of step 2 above Turn the pattern adjusting knob so that the last seam of B is overlapped as illustrated in the figure below 4 Sew BH buttonhole and check the stitch pitch 5 After the adjustment in case th
32. the left end of the feed dog 2 Turn OFF the power switch and turn the handwheel in a condition that the operation lever is lowered Then slowly return the moving knife 3 When the blade section of the moving knife has passed the right end of the knife guide plate upper the movement of the moving knife does not change against the movement of handwheel At that position stop turning the handwheel 4 At that position check the position and dimension of the moving knife and the knife guide plate Then loosen again the screw and make a fine adjustment of the position of the knife guide plate so that dimensions 0 5 to 1 mm C and 1 0 mm or less D are covered gr guide plate upper lt gt d 74 Moving knife T 0 5 to 1 mm The tip the moving knife should not protrude from the line E of the front rim of moving knife guide plate 4 Adjustment of the knife driving link Clearance between the driving link4 roller and the thread trimming cam O Remove the throat plate OA clearance of 0 5 mm should be provided between the thread trimming cam and the driving roller when the operating lever is positioned horizontally How to check The moving knife should move by approximately 0 7 to 1 0 mm when raising lowering the presser foot with the needle bar positioned in the intermediate position of its strike How to adjust Loosen screw Qin the collar and adjust the knife driving link by turning the lower
33. to enter the thread paths Attached in the rear side of the arm cover Pre tension Thread thickness and effect tension Pre tension is located at clearance A to Thread thickness 1 Pre tension 2 1st tension 3 2nd tension correspond to tick thread and gives the tension to think thread Thick thread is given the necessary tension mainly by 1 2 3 1st tension main tension This tension basically gives the tension to thin thread This tension has the function of manual tension adjustment as well 2nd tension This tension is located at clearance B for medium weight thread to correspond to medium sized thread Medium weight thread is given the proper tension mainly by 2 3 Thin Medium Thick 2 External adjusting function to re set the thread tension is provided for users choice The mechanism that the tension cam holds the dial can disengage the engagement of the both ratchets by inserting a small sized slit screwdriver or the like By shifting the both position in this state re setting of the dial granduation can be performed Configuration diagram 19 Small hole Tooth Engage section Aligning mark Dial Screwdriver 4th tooth 4th tooth Front J Rear 1st tension Tension cam How to disengage How to adjust case adjusting the tension after assembling the front panel and arm cover is desired the dial
34. urn the adjusting screw so that the total tensions become 0 294 0 019N 30 20 7 After re checking the tension perform a trial sewing If further adjustment is necessary make a fine adjustment using the screw of the 2nd tension 8 Tighten the nut to fix it 1st tension 4 2nd tension 2nd tension 1sttension lt lt 0 107 NI 11429 0 294 UB 0 019N r 20 11 5 Adjusting the bobbin thread tension Remove the throat plate needle plate How to adjust 1 Position the inner hook and the tension gauge as shown in the figure and adjust using the adjusting screw 8 so that the tension becomes 0 127 0 0098N 13 19 with the Dual Duty 50 thread Inner hook innarhopk Tension gauge Tension gauge Top view 21 Automatic thread trimmer components 1 Position of the thread trimming switch and one stitch switch O Remove the top board and the face plate cover Page 5 1 1 one stitch switch should turn ON when raising the presser foot or turn OFF when lowering it Loosen screw the one stitch switch and make the adjustment 1 2 OThe one stitch switch should turn ON when the operating lever is set at the thread trimming retaining position On the other hand the thread trimming switch should turn OFF at the aforementioned moment OThe thread trimming switch should turn ON when the lever is further lowered from the retaining position Make the adjustment using screw
35. x it with the screws face plate cover are spaced equidistantly asm with respect to the lateral direction 7 Main shaft operating lever receiving plate Preparation required O Remove the top board and the face plate cover O Remove the front panel O Remove the microcomputer circuit board and the idler O Remove the timing belt O Remove the needle bar connecting rod O Remove the motor belt Screw in the needle bar crank Needle bar crank rod Screw in the main shaft ball bearing D Screw in the operating lever shaft receiving plate Timing belt large Disassembly Assembly Point to be checked Remove two screws D and remove the operating lever shaft receiving plate asm Loosen screw in the needle bar crank Remove screw 3 in the ball bearing receiving plate located at the right hand side and remove the right hand receiving plate Also remove screw Q in the ball bearing receiving plate located at the left hand side and remove the left hand re ceiving plate Detach the right hand end of the main shaft from the frame and draw out needle bar crank rod from the needle bar connecting stud Or remove the needle bar crank Attach the main shaft in place Engage the main shaft with the needle bar crank or the crank rod Set the operating lever shaft receiving plate in place and fix it
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