JUKI HZL-T100 Service Manual
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JUKI HZL-T100 Service Manual

JUKI HZL-T100 Service Manual

Computer sewing machine
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COMPUTER SEWING MACHINE
HZL-T100
SERVICE MANUAL

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Summary of Contents for JUKI HZL-T100

  • Page 1 ® COMPUTER SEWING MACHINE HZL-T100 SERVICE MANUAL...

  • Page 2: Table Of Contents

    CONTENTS [1] SPECIFICATIONS ··············································································· 1 [2] CONFIGURATION ··············································································· 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 ·························· 5 detecting ····································································· 7 3.

  • Page 3: Specifications

    [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.
  • Page 4 (5) Needle bar rocking mechanism 1. Needle bar rocking method : By the arc method 2. Straight stitching : Left, center, right 3. Stitch width : Max. 6 mm depending on the stitch pattern 4. Adjustment of stitch width : 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.*...
  • Page 5 5. Number of stitch patterns Continuous stitch patterns 43*, One point stitch patterns 57* Total 100 stitch patterns Buttonhole : Buttonhole(small), Buttonhole(large), Eyelet buttonhole *, Deco- rative buttonhole 6. Slow start function Approx. 1 stitch is sewn at the speed of 116 rpm after the start switch is turned ON.

  • Page 6: Configuration

    [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 & lever button & lever Top cover Liquid crystal display (LCD) Face cover Pattern (Number) selector Presser foot lifter/thread trimming lever buttons Sewing speed setting lever...

  • Page 7: Assembly / Diassembly

    [3] ASSEMBLY / DISASSEMBLY Frame components Rear right Top cover section 1. Top cover, top board Hinge section Top board Top board screws Face plate cover Disassembly Assembly Point to be checked When removing the top cover, bend · Set the top cover in place with closed. ·...

  • Page 8: Front Panel

    [Top surface of the frame] Main shaft Bobbin winder shaft 4. Front panel Preparation required Remove the top board. Remove the front cover. Needle bar Remove the operating lever. connecting rod [Side face of frame (face frame)] Center screw of panel Engaging section at the center of panel Needle thread guide pin Face plate cover...

  • Page 9: Detecting

    Functional components 1. Microcomputer circuit board, Radiating plate Cable clip main shaft detecting Preparation required Remove the top board. Screw in main Remove the face plate cover . shaft detecting Remove the front panel. circuit board Metal fittings Screw in the microcomputer * Screw in the radiating plate circuit board Disassembly...

  • Page 10: Idler, Bobbin Winder Base (Asm.)

    3. Idler, bobbin winder base (asm.) Screw in the idler Screw in the bobbin winder base Preparation required Center of the belt Remove the top board and the handle. Remove the face plate cover. Remove the front panel. Remove the microcomputer circuit board. [Top surface] Disassembly Point to be checked...

  • Page 11: Needle Bar Connecting Rod, Needle Throwing Stm

    5. Needle bar connecting rod, needle throwing STM Preparation required Remove the top board. Remove the face plate cover. Remove the front panel. Remove the microcomputer circuit board. Needle throwing STM link gear Needle bar connecting rod Screw in the needle throwing STM Disassembly Point to be checked Assembly...

  • Page 12: Main Shaft, Operating Lever Receiving Plate

    7. Main shaft, operating Screw in the main shaft ball bearing lever receiving plate Preparation required Screw in the operating lever Remove the top board and shaft receiving plate the face plate cover. Remove the front panel. Timing belt (large) Remove the microcomputer circuit board and the idler.

  • Page 13: Needle Bar Frame Stud (Asm.)

    9. Needle bar frame stud (asm.) Preparation required Hndle retaining plate Screw in the needle bar frame stud Remove the presser foot holder and the needle. Needle bar crank Remove the top board and the face plate cover. Remove the front panel. Remove the screw (located at the upper right section) of the microcomputer circuit board.

  • Page 14: Circuit Board Connecting Diagram

    [4] CIRCUIT BOARD CONNECTING DIAGRAM [Manual circuit board] [Indicator circuit board] [Power circuit board for 120V] CN33: J1: Motor drive Fuse: 3 A C N 3 1 : S t a r t / Slide V.R. Stop & Rev.SW. CN10 CN11 CN16 CN12...

  • Page 15: Adjustment

    [5] ADJUSTMENT Sewing components 1. Height of the needle bar Remove the face cover, top cover and front panel. Adjustment Dimension from the lower end of needle bar pin to the race face of hook : 28.72 mm In case needle attached incline the angle from which the needle hole is visible by 0 to 5º to the right. (Hitched stitch prevention at the time of reverse stitch) How to adjust 1.

  • Page 16: Height Of The Feed Dog

    4. Height of the feed dog 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).

  • Page 17: Clearance Between The Needle And The Blade Point

    6. Clearance between the needle and the blade point Blade point Remove the front panel. (Page 6) A clearance of 0.02 to 0.07 mm should be provide between the center of the needle and 0.02 to the blade point of the hook when the needle 0.07 mm which is ascending from its lowest dead point Needle...

  • Page 18: Adjusting The Longitudinal Feed

    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...

  • Page 19: Buttonhole Change-Over Switch

    9. Buttonhole change-over switch Remove the top cover. (Page 5) Adjustment 1. Attach the BH (buttonhole) presser foot in place and lower the presser foot. 2. 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.

  • Page 20: Adjusting The Tension

    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.
  • Page 21 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 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 ·...
  • Page 22 11-4. Adjusting the needle thread tension · Remove the face cover, top cover front panel. Example: Polyester thread 70D/1X2(Z) How to adjust 1. Remove to the front panel and make a condition that the arm cover is attached. 2. Place right above the number among the numbers on the tension knob.
  • Page 23 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±1g) with the Dual Duty #50 thread. Inner hook Tension gauge Inner hook...

  • Page 24: Automatic Thread Trimmer Components

    Automatic thread trimmer components 1. Position of the thread trimming switch and one-stitch switch Remove the top board and the face plate cover. (Page 5) The one-stitch switch should turn ON when raising the presser foot, or turn OFF when lowering it. Loosen screw in the one-stitch switch, and make the adjustment.

  • Page 25: Position Of The Moving Knife (Draw-In Position Of The Moving Knife)

    3. Position of the moving knife (draw-in position of the moving knife) Remove the throat plate (needle plate). 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.

  • Page 26: Adjustment Of The Knife Disengaging Plate

    5. Adjustment of the knife disengaging plate (Engagement of the disengaging plate and the thread trimming cam) Remove the throat plate (needle plate) and the front panel. A clearance of 0.5 ± 0.3 mm should be provided between knife disengaging plate and moving knife link roller when the operating lever is positioned horizontally.

  • Page 27: Adjusting The Position Of Knife

    7. Adjusting the position of knife 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.
  • Page 28 ® 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 02.12 Printed in Japan (E)

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