JUKI HZL-T100 Service Manual Download Page 1 | Manualshive

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SERVICE MANUAL

HZL-T100

®

COMPUTER SEWING MACHINE

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Summary of Contents for HZL-T100

Page 1: ...SERVICE MANUAL HZL T100 COMPUTER SEWING MACHINE ...

Page 2: ...eiving plate 10 8 Cylinder bed receiving plate asm 10 9 Needle bar frame stud asm 11 Sewing components 1 Height of needle bar 13 2 Needle entry lateral in the throat plate needle plate 13 3 Height of the presser foot 13 4 Height of the feed dog 14 5 Adjusting the needle to hook timing 14 6 Clearance between the needle and the blade point 15 7 Position of the detent plate of the inner hook position...

Page 3: ...aight stitching 116 to 500 rpm For winding a bobbin 116 to 700 rpm The main unit case covers the components exclude the under cover and the handle Designed to be tilted from the main unit of the sewing machine Link type thread take up with slit for one touch utility thread eyelet Full rotary vertical axis hook Constant pressure applying system Built in face plate cover The power switch of the sewi...

Page 4: ...nism 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 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 ...

Page 5: ...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...

Page 6: ...ed setting lever When speed controller is not used Reverse stitch button Liquid crystal display LCD Pattern No increase decrease selector button Pattern memory button Pattern clear button Straight stitch direct button Needle set screw Feed dog Buttonholing lever Presser foot release button Needle threader Presser foot holder Needle Presser foot Hook cover button Bobbin Bobbin case Throat plate nee...

Page 7: ...ly Assembly Point to be checked Remove one retaining ring of the handle Remove handle Loosen screw 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 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 ASSEMBLY DISASSEMBLY 3...

Page 8: ...late cover guide shaft A 5 Bed base cylinder bed lower cover Disassembly Assembly Point to be checked Remove three screws in the rubber seat A Remove three screws 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 accurac...

Page 9: ...circuit and not to allow the radiating plate marked with a double circle to come in contact with the motor belt transformer and other components The shielding plate of the main shaft should not come in contact with the sensor when installing the printed circuit board in place Cable clip Screw in main shaft detecting circuit board Screw in the microcomputer circuit board Screw in the radiating plat...

Page 10: ...obbin winding switch should be turned OFF 4 Transformer power switch Preparation required Remove the top board and the front face cover Remove the front panel Remove the microcomputer circuit board Remove the idler and the motor Remove the timing belt Remove the cover of the electrical box Disassembly Assembly Point to be checked Remove two screws in the trans former Metal fittings come off simult...

Page 11: ...ng STM and the needle bar frame Attach the connecting rod in place Attach the components which have been removed in place Do not bend the connecting rod Be sure to attach the components properly Screw in the needle throwing STM Needle bar connecting rod 6 Face plate asm Preparation required Remove the top board Remove the face plate cover Remove the front panel Disassembly Assembly Point to be che...

Page 12: ... and thrust play of the main shaft Check the retaining position of the leads Screw in the operating lever shaft receiving plate Screw in the needle bar crank Needle bar crank rod 8 Cylinder bed receiving plate asm Remove the top board and the bed base Remove the cylinder bed lower cover Loosen the idler See No 3 on page 8 Disassembly Assembly Point to be checked Remove timing belt large from the h...

Page 13: ...at 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 in the needle bar fame stud Attach the opera...

Page 14: ...ing 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 Manual circuit board Indicator circuit board Power circuit board for 230V CN7 J3 Power switch Fuse 3 A J1 Motor drive J5 Power cord J2 Motor J4 Power transformer Micro computer circuit board J2 Motor J1 Motor d...

Page 15: ... the adjustment condition tighten further the screw 2 Needle entry lateral in the throat plate needle plate Remove the top board Bring the needle to the straight stitching position How to adjust Loosen screw in the needle entry adjusting collar Adjust the needle entry by turning adjusting collar 3 Height of the presser foot Remove the face plate cover Page 5 Left the presser foot until the sole of...

Page 16: ...t 5 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 t...

Page 17: ...Check the clearance with the screws tightened Tighten screw while pressing the stopper against the frame Remove the throat plate needle plate Press the detent plate of inner hook against the detent plate attaching boss How to adjust Loosen screw and adjust the position of the detent plate Inner hook should be flash with the detent plate 15 15 15 15 15 6 Clearance between the needle and the blade p...

Page 18: ...ions 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 the 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 Reverse ...

Page 19: ...t and make the sewing machine run idle without threading to check the return position of the buttonhole and stop state Perform re adjustment if there is any trouble When these tests are OK thread the machine head and perform the test sewing of the buttonhole 10 Vertical position of automatic threader hook Remove the front panel Page 6 The clearance provided between the top end of hook and the top ...

Page 20: ...n 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 How to adjust In case adjusting the tension after assembling the front panel and arm cover is desired the dial of 1st tension can be adjusted because of th...

Page 21: ...disk The securely tighten the screw However the tension of the pre tension is a fixed type and cannot be adjusted 11 3 Opening amount of the 2nd tension disk Remove the top cover and front panel 1 When raising the operation lever loosen the screw 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 ti...

Page 22: ...019N 11 2g 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 turn the adjusti...

Page 23: ...ate 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 1g with the Dual Duty 50 thread Inner hook 8 Tension gauge Tension gauge Top view Inner hook ...

Page 24: ... plate Page 5 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 fi...

Page 25: ...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 4 Adjustment of the knife driving link Clearance between the driving link4 roller and the thread trimming cam Remove the throat plate A cleara...

Page 26: ...le plate and the bed base Page 6 Remove the cylinder bed lower cover Page 6 When the operating lever by one step approx 43º looper should ride over projecting section of the inner hook The looper should not come down even if further lowering the lever approx 55º How to adjust Loosen screw and move it to the right or left 24 24 24 24 24 5 Adjustment of the knife disengaging plate Engagement of the ...

Page 27: ...moving knife base can be moved 4 Turn the eccentric shaft and adjust the position and dimension The securely tighten the set screws 8 Stop position of thread trimmer 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 me...

Page 28: ...ORPORATION 8 2 1 KOKURYO CHO CHOFU SHI TOKYO 182 8655 JAPAN PHONE 81 3 3480 5034 FAX 81 3 3480 5037 02 12 Printed in Japan E Copyright 2002 JUKI CORPORATION All rights reserved throughout the world 29363405 ...

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