JUKI LZ-2290A Instruction Manual
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JUKI LZ-2290A Instruction Manual

JUKI LZ-2290A Instruction Manual

Computer-controlled, direct-drive, high-speed, 1-needle, lockstitch, zigzag stitching machine
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Computer-controlled, Direct-drive,
High-speed, 1-needle, Lockstitch,
Zigzag Stitching Machine
LZ-2290A

INSTRUCTION MANUAL

NOTE :
Read safety instructions carefully and understand them before using.
Retain this Instruction Manual for future reference.
/ IP-100 / SC-915
R
E-No.03
40012702

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Summary of Contents for JUKI LZ-2290A

  • Page 1: Instruction Manual

    Computer-controlled, Direct-drive, High-speed, 1-needle, Lockstitch, Zigzag Stitching Machine LZ-2290A / IP-100 / SC-915 INSTRUCTION MANUAL NOTE : Read safety instructions carefully and understand them before using. Retain this Instruction Manual for future reference. E-No.03 40012702...
  • Page 2 FAX : (81)3-3430-4909 • 4914 • 4984 The description covered in this instruction manual is subject to change for improvement of the TELEX : J22967 commodity without notice. Copyright C 2003-2004 JUKI CORPORATION. All rights reserved throughout the world. 04 · 04 Printed in Japan (E)

  • Page 3: Important Safety Instructions

    17. The machine is only allowed to be used for the purpose intended. Other used are not allowed. 18. Remodel or modify the machine in accordance with the safety rules/standards while taking all the effective safety measures. JUKI assumes no responsibility for damage caused by remodeling or modification of the machine.

  • Page 4: For Safe Operation

    FOR SAFE OPERATION 1. To avoid electrical shock hazards, neither open the cover of the electrical box nor touch the components mounted inside the electrical box. 1. To avoid personal injury, never operate the machine with any of the finger guard or safety devices removed.
  • Page 5 CAUTION BEFORE OPERATION WARNING : To avoid malfunction and damage of the machine, confirm the following. • Remove the air-vent cap (red color) attached to the sewing machine bed. • Be sure to fill the oil tank with oil before use. •...

  • Page 6: Table Of Contents

    6-16. Setting for functions ....... 78 type sewing machine ........12 (1) How to change over to the function setting mode .. 78 4-13. Lubrication (LZ-2290A-SS • A-SU (-7)) ..13 (2) Function setting list ......... 81 4-14. Test run ............ 14 (3) Detailed explanation of selection of functions ..

  • Page 7: Name Of Each Component

    1. NAME OF EACH COMPONENT !5 T ension controller No. 1 1Needle thread draw-out device 8Knee lifter lever (LZ-2290A(U)-7) (Pre-tension) !6 T hread stand 2Wiper switch (WB,CB type) 9Power switch !0 H and switch !7 O il supply opening 3Thread take-up cover...

  • Page 8: Specifications

    Noise measurement according to DIN 45635-48-A-1. * 1. The max. sewing speed is limited by the amount of zigzag width per stitch. Up to 4 mm : 5,000 rpm (LZ-2290A-SU : 4,500 rpm, LZ-2290A-DS A-DU (-7) : 4,000 rpm), •...

  • Page 9: Stitch Pattern Table

    3. STITCH PATTERN TABLE Stitch Number of stitches Name of pattern Max.zigzag width Remarks pattern for pattern Straight stitch — Standard zigzag stitch 2-step zigzag stitch 3-step zigzag stitch Scallop Standard (right) scallop Crescent scallop Equal-width scallop Equal-width scallop Scallop Standard (left) scallop...

  • Page 10: Installation

    4. INSTALLATION WARNING : • Perform the installation of the sewing machine by the technical personnel who have been trained. • To prevent personal injury, ask our dealer or the electrician for electric wiring. • Be sure to perform the work with two persons or more when transporting the sewing machine and use a lorry when moving it.

  • Page 11: Removing The Needle Bar Stopper

    4-2. Removing the needle bar stopper Remove needle bar stopper 1 for transportation. Keep the needle bar stopper which has been removed, and install this needle bar stopper when transporting the Cau tion sewing machine.The needle bar stopper may be cut when it is strongly drawn out.

  • Page 12: Installing The Electrical Box

    4-5. Installing the electrical box Install the electrical box on the underside of the table at the location illustrated using round-head bolt 1, plain washer 2, spring washer 3 and nut 4 supplied with the machine, and using bolt having hexagonal indentation on the head 5, plain washer 6 and spring washer 7 supplied with the machine.

  • Page 13: Connecting The Cords

    4-8. Connecting the cords WARNING : • To prevent personal injury caused by abrupt start of the sewing machine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or more. • To prevent damage of device caused by maloperation and wrong specifications, be sure to connect all the corresponding connectors to the specified places.

  • Page 14: Connecting The Connectors

    (2) Connecting the connectors • Each connector has the inserting direction. Check the direction and securely insert it. (In case of the type with lock, insert up to the lock.) • If the connector is forcibly inserted, trouble or accident will be caused. Cau tion •...
  • Page 15 9) Insert black connector 4P white cord 9 coming from the machine head inside the electrical box through front cover through hole B, and insert it into connector CN31 !0 . 10) Insert gray round connector 7P cord !1 coming from the machine head inside the electrical box through front cover through hole B, pass it through cord clamp “a”, and insert it into connector CN30...
  • Page 16 When the Auto-lifter (AK121) is used : 14) Insert white connector 2P cord @1 coming from the machine head inside the electrical box through front cover through hole B, pass it through cord clamps “a”, “e” and “f”, and insert it into connector CN40 @2 .

  • Page 17: Attaching The Connecting Rod

    When the insertion of the connector is completed, lock How to lock the cord clamp the cord clamps. Clamp 4 Lightly press the corner of clamp. (Cord clamp is locked with a click.) q Take care so that the cord is not caught between the rear cover and the electrical box main body, close the rear cover while pressing section A on the lower side of the rear cover, and tighten four...

  • Page 18: Installing The Thread Stand

    (mm) solenoid valve (asm.) and regulator (asm.) on the bottom surface of the machine table. Besides, awling is performed on JUKI genuine table. 2) Fix solenoid valve (asm.) 1 with wood screw 2 supplied with the sewing machine as accessories.

  • Page 19: Lubrication (Lz-2290A-Ss • A-Su (-7))

    Fill the oil tank with oil for hook lubrication before operating the sewing machine. 1) Remove oil hole cap 1 and fill the oil tank with JUKI New Defrix Oil No. 1 using the oiler supplied with the machine.

  • Page 20: Test Run

    4-14. Test run (1) Turn ON the power WARNING : • Check again the power voltage before connecting the power cord. • Check that the power switch is turned OFF and connect the power cord to the power receptacle. • Be sure to connect the earth wire. •...

  • Page 21: Preparation Before Sewing

    5.PREPARATION BEFORE SEWING 5-1. Inserting the needle WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. 1) Turn the handwheel by hand to raise the needle to its highest position.

  • Page 22: Placing The Bobbin Case And The Bobbin

    6) In case that the bobbin thread is not wound evenly on the bobbin, loosen the nut 4 and turn the bobbin thread tension to adjust the height of the thread tension disk 2. • It is the standard that the center of the bobbin is as high as the center of the thread tension disk.

  • Page 23: Threading The Machine Head

    WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. LZ-2290A-7 LZ-2290A With thread Without thread...

  • Page 24: How To Use The Operation Panel

    6. HOW TO USE THE OPERATION PANEL 6-1. Names and functions of the respective sections !5 Power display lamp 1 Re-sewing switch 8 Information switch !6 Smart media cover 2 Needle up/down compensating switch 9 Edge sensor switch !7 Smart media slot !0 One-shot stitching switch 3 Screen changeover switch !1 With/without automatic thread trimmer switch...
  • Page 25 8 Information switch This is the switch to perform various function settings. 9 Edge sensor switch This switch cannot be used with LZ-2290A. !0 One-shot stitching switch When this switch is set to effective at the time of program stitching, the sewing machine automatically operates up to the specified number of stitches.

  • Page 26: Before Setting The Pattern

    6-2. Before setting the pattern WARNING : Provide a clearance of 0.5 mm or more between the needle and the gauges when replacing the gauges such as presser foot, throat plate, etc. If the clearance is smaller than the specified value, it is in danger of causing the needle to be broken or the like.
  • Page 27 How to set max. zigzag width limitation value Determine whether limitation of zigzag width Limitation of zigzag Limitation of left/ width symmetrical right positions R = +4.7 L = -3.3 symmetrical in the center or limitation of left/right in the center Setting Setting positions in the order of 1) to 3) of the previous page...

  • Page 28: Setting The Reference Of Stitch Base Line

    (2) Setting the reference of stitch base line • Reference position of stitch base line can be set to left, center and right. Reference of center Reference of left Reference of right stitch base line stitch base line stitch base line How to set 1) Press switch 1.

  • Page 29: Basic Screen

    6-3. Basic screen The screen after turning ON the power source becomes the screen at the time of turning OFF the power source for the last time. Every time switch is pressed, the screen changes as follows : Example) Free stitching of standard zigzag with reverse feed stitching (Contents of display change depending on the set values.) Sewing shape list first screen Selection of each shape is...

  • Page 30: List Of The Display Pictographs Of Each Screen

    6-4. List of the display pictographs of each screen Sewing shape list first screen Straight stitch Standard zigzag stitch 2-step zigzag stitch 3-step zigzag stitch Scallop Custom Pattern Blind stitch Sewing shape list second screen Continuous stitching Cycle stitching Scallop selection pop-up screen Left standard Left crescent Left equal 24 stitches...
  • Page 31 Blind stitch selection pop-up screen Left blind stitch Right blind stitch Custom pattern selection pop-up screen Custom pattern new creation Continuous stitching selection pop-up screen Continuous stitching new creation Cycle stitching selection pop-up screen Cycle stitching new creation...
  • Page 32 Straight stitch sewing shape setting screen kind of Position of sewing stitch base line Pattern register Free stitching – 5.0 Programmed stitching Overlapped stitching Sewing shape setting screen of standard zigzag stitch/2-step zigzag stitch/3-step zigzag stitch Position of Position Position Kind of Zigzag stitch base...
  • Page 33 Scallop sewing shape setting screen Position Position Stop Position of Kind of Zigzag at sewing at sewing stitch base position sewing width start line Root Crest Root Crest Right Left Pattern register Free Root Optional Optional stitching – 5.0 Programmed Crest Crest stitching...
  • Page 34 Blind stitch sewing shape setting screen Position of Kind of Zigzag Number stitch base sewing width of stitches line Pattern register Free stitching – 5.0 Programmed stitching 10.0 Overlapped stitching Custom pattern sewing shape setting screen Custom pattern needle entry image Position of Kind of Zigzag...
  • Page 35 Custom pattern edit screen Feed Zigzag Custom pattern Last needle entry input direction position needle entry image Step input Normal Reverse Determination – 5.0 Needle entry Needle entry Normal point insertion point deletion Reverse Pattern sewing shape setting screen Sewing Kind of Display of contents depends on shape.
  • Page 36 Continuous stitching setting screen Position of Number Zigzag Pattern Step stitch base width line stitches – 5.0 Edit screen display Copy and deletion screen 10.0 Copy Deletion Continuous stitching edit screen Number Pattern Sewing Step shape stitches Determination * For the sewing shape, the shape which has been registered in the pattern is displayed.
  • Page 37 Cycle stitching setting screen Number Position Pattern Step Stop state of presser stitches foot Edit screen display Copy and deletion screen * Stop state is not displayed when the number of stitches is (0 stitch). * Position of presser foot is displayed except the case where the number Copy of stitches is (0 stitch) with the auto-lifter.
  • Page 38 Reverse stitching setting first screen Reverse Sewing start Sewing end stitching at sewing start Selection Selection Process Process Process Process With/ of kind of kind without Reverse stitching at sewing With/ without Normal 0 to 19 0 to 19 Normal 0 to 19 0 to 19 Custom...
  • Page 39 Reverse stitching setting second screen (Condensation custom) Width Width adjustment adjustment at sewing at sewing start 10.0 10.0 Sewing common data setting first screen (When max. zigzag width limitation is set in the center) Limiting Max.zigzag Reference procedure width of stitch of max.zigzag limitation base line...
  • Page 40 Sewing common data setting first screen (When limiting procedure of max. zigzag width limitation is set to left/right) Limiting Specifying Specifying Reference procedure of stitch left right of max.zigzag base line position position width limitation Left/Right Center 10.0 10.0 Left Right Center * When the limiting procedure of max.

  • Page 41: Setting The Sewing Pattern

    6-5. Setting the sewing pattern WARNING : Be sure to check presser foot and gauge currently being used before sewing after changing the zigzag pattern or zigzag width. In case where sewing is performed with the presser foot or gauge not matching the zigzag width, it is in danger of accident such as needle breakage or the like.
  • Page 42 Left standard scallop Left crescent scallop Left equal-width scallop of 24 stitches Left equal-width scallop of 12 stitches In case of the scallop 1) Press the scallop key and the screen on the left side appears. Press the pattern switch you desire to select.

  • Page 43: Setting Of The Sewing Shape

    6-6. Setting of the sewing shape • Zigzag width can be set from “0” to 10 mm. (Set value is limited by the max.zigzag width limitation.) • Stitch base line can be set as follows. When the center of zigzag is “0.0”, Right side : “+” Left side : “–”. (1) Standard zigzag, 2-step zigzag and 3-step zigzag stitch Sewing shape list first screen 3-step zigzag...

  • Page 44: Scallop Stitching

    (2) Scallop stitching Sewing shape list first screen 1) Select scallop stitching 1 in the sewing shape list first screen. Scallop selection pop-up screen Left equal-width Left standard Left crescent Left equal-width scallop of 24 scallop of 12 scallop scallop stitches stitches 2) Press the switch of pattern...
  • Page 45 Setting of the position of sewing start of switch 3. Set the position of sewing start with Sewing start, root Sewing start, crest Start from crest and start from root of scallop Start from Start from Start of sewing root crest Normally, scallop starts the Needle position after...

  • Page 46: Blind Stitch Sewing

    (3) Blind stitch sewing Sewing shape list first screen 1) Select the blind stitch sewing in the sewing shape list first screen. Blind stitch selection pop-up screen 2) Press the switch of pattern to be selected from the screen of the left figure. Left blind stitch Right blind stitch Sewing shape first screen...

  • Page 47: Custom Pattern Stitching

    (4) Custom pattern stitching Sewing shape list first screen 1) Select custom pattern 1 in the sewing shape list first screen. Custom pattern selection pop-up screen 2) Press the custom pattern No. to be selected. Sewing shape list first screen 3) T h e s e l e c t e d s h a p e reverses and is indicated on the left end of the...

  • Page 48: Reverse Feed Stitching

    6-7. Reverse feed stitching Reverse feed stitching can be set with each zigzag pattern. Effective/ineffective of reverse feed stitching can be set by pressing reverse feed stitch at sewing start switch and reverse feed stitch at sewing end switch 2. In case the reverse feed stitching is effective, the respective shapes of the reverse feed stitching are displayed.

  • Page 49: Standard Condensation

    (1) Standard condensation Standard condensation performs reverse feed stitching at the same needle entry as that of the selected zigzag pattern. Example) Reverse feed stitching at sewing end Zigzag pattern section 2-step zigzag stitching Standard condensation section Process C : 4-times setting Example) In case of free stitching of the standard zigzag stitch 1) Press to display reverse feed stitching setting screen.

  • Page 50: 2-Point Condensation

    * For the reverse feed stitching setting, there are two kinds of methods below according to the zigzag patterns. 1) In case of straight stitch, scallop stitch, blind stitch, custom and continuous stitch, set the reverse feed stitching with the number of stitches. Reverse feed stitching at sewing start A (feed in normal direction) : 0 to 19 stitches can be set.
  • Page 51 3) Set 2-point condensation width adjustment with the second screen. (Width can be narrowed up to max. – 5 mm.) 7 : Set 2-point condensation width adjustment at the sewing start. 8 : Set 2-point condensation width adjustment at the sewing end. * 2-point condensation width adjustment can narrow the width from the first needle entry position to the next needle entry position when performing the reverse feed stitching.

  • Page 52: Condensation Custom

    (3) Condensation custom Condensation custom performs reverse feed stitching with the optional needle entry which has been inputted. 1) Select the shape of condensation with the first screen. 1: Select the shape of condensation at the sewing start. 3 : Select the shape of condensation at the sewing end. 2, 4 : Needle entry position is displayed.

  • Page 53: Comparision Table Of The Reverse Stitch Of Each Shape

    (4) Comparision table of the reverse stitch of each shape Standard condensation 2-point condensation Condensation custom Sewing start Sewing end Sewing start Sewing end Sewing start Sewing end Straight stitch Standard zigzag stitch 2-step zigzag stitch 3-step zigzag stitch Scallop Blind stitch Custom Continuous stitch...

  • Page 54: Selection Of The Kind Of Stitching

    6-8. Selection of the kind of stitching Impor tant Standard delivery level of the key lock is “1”. When the level of the key lock is the case other than “0”, be sure to change the level to “0” to perform the operation below. Example) Standard zigzag Sewing shape setting screen Select the kind of stitching...
  • Page 55 Example) Standard zigzag Sewing shape setting screen 1) S e l e c t s h o w i n g programmed stitching with 1 of sewing shape setting screen. Programmed stitching selection screen 2) Press to display the programmed stitching setting screen.

  • Page 56: Custom Pattern

    One-shot automatic stitching One-shot automatic stitching can be set by each step. 1) In the programmed stitching edit screen, press one-shot automatic stitching switch 5 to select the one-shot automatic stitching. (When it is in the selected state, a mark is displayed on the side of switch 5.) 2) In the step where the one-shot automatic stitching has been selected, the sewing machine will automatically continue sewing, once the sewing machine starts running, until the number of stitches of the step is reached.

  • Page 57: New Creation Of The Custom Pattern

    Custom pattern selection pop-up screen 2) Press switch 2 corresponding to the pattern which has been registered in the custom pattern selection pop-up screen. Sewing shape setting screen 3 4 5 3 4 5 3) Press to display the sewing shape setting screen. 4) Zigzag width, position of stitch base line, etc.

  • Page 58: Custom Pattern Edit

    (3) Custom pattern edit 1) Press switch of in the sewing shape setting screen to move to the custom pattern edit screen. Custom pattern edit screen 7 8 9 9 !1 2) Set the needle entry position and sewing direction of each step in the custom pattern edit screen. 7 : Set the step with “+”...
  • Page 59 Registration of pattern Registration pop-up screen 1 in the pop-up screen of registration, copy and deletion of custom pattern. 1) Press 2) Select the pattern No. you desire to register with 4 in the registration pop-up screen. When is pressed here, the screen returns to the former one without registering the pattern. 3) When is pressed, registration is performed.

  • Page 60: Condensation Custom

    3 in the copy pop-up screen and the deletion pop-up screen to display the deletion pop-up 1) Press screen. 2) Select the pattern No. you desire to delete in the deletion pop-up screen. 7 : Select the pattern to be deleted with “+” and “–”. When is pressed here, the screen returns to the former one without deleting.

  • Page 61: Condensation Custom Edit

    (2) Condensation custom edit Condensation custom edit screen 1) Press to display the reverse feed stitching setting screen. 2) Press 2 or 4 in the reverse feed stitching setting screen to move to the condensation custom edit screen. 3) Set the needle entry position for each step in the condensation custom edit screen. 1 : Set the step with “+”...

  • Page 62: Pattern Stitching

    5) When all inputting procedures have been completed, press key to determine. When the power source is turned OFF without pressing key, the inputted data returns Cau tion to the former one. When you desire to determine the data, be sure to press key.

  • Page 63: Registering The Pattern Stitching

    Sewing shape setting screen * When there is the second 4 is displayed. screen, 4) Setting of the respective items can be performed in the sewing shape setting screen. Position of Position at Number of stitches of Stop position Shape Zigzag width stitch base line sewing start...

  • Page 64: Copy And Deletion Of The Pattern Stitching

    New registration pop-up screen 3) Select the pattern No. to w h i c h y o u d e s i r e t o register with 2 in the new registration pop-up screen. When is pressed here, the screen returns to the f o r m e r o n e w i t h o u t performing the registration.

  • Page 65: Continuous Stitching

    How to delete Deletion pop-up screen 2 in the copy 1) Press and deletion pop-up screen to display the deletion pop- up screen. 2) Select pattern No. you desire to delete in the deletion pop-up screen. 5 : Select the pattern to be deleted with “+”...

  • Page 66: New Creation Of The Continuous Stitching

    (1) New creation of the continuous stitching Continuous stitching pattern can be newly created. New creation pop-up screen 1) Press in the continuous stitching selection pop-up screen to display the new creation pop-up screen. 2) Nos. which have not been registered at present are displayed in 1. Select the No. you desire to obtain with “+”...
  • Page 67 Continuous stitching setting screen 3 4 5 3 4 5 3) Press to display the continuous stitching setting screen. 4) Zigzag width and position of stitch base line can be set in the continuous stitching setting screen. 3 : Set zigzag width after combining with “+” and “–”. 4 : Set the position of stitch base line with “+”...

  • Page 68: Copy And Deletion Of The Continuous Stitching

    (3) Copy and deletion of the continuous stitching Press in the continuous stitching setting screen, and the copy and deletion of continuous stitching pop-up screen is displayed. The copy and deletion of the continuous stitching pattern can be performed. How to copy Copy and deletion of continuous stitching pop-up screen 1 in the copy 1) Press...

  • Page 69: Cycle Stitching

    6-13. Cycle stitching Impor tant Standard delivery level of the key lock is “1”. When the level of the key lock is the case other than “0”, be sure to change the level to “0” to perform the operation below. Cycle stitching can change over the different patterns in order and perform the sewing.
  • Page 70 Cycle stitching setting screen 3 4 5 4) Setting of each step can be displayed in the cycle stitching setting screen. 3 : Select the registered steps with “+” and “–”. 4 : Pattern No. which is being selected at present is displayed. Editing cannot be performed. 5 : Stop state of the step which is being selected at present is displayed.

  • Page 71: Copy And Deletion Of The Cycle Stitching

    (3) Copy and deletion of the cycle stitching Press in the cycle stitching setting screen to display the copy and deletion of cycle stitching pop-up screen. Then copy and deletion of the cycle stitching pattern can be performed. How to copy Copy and deletion of cycle stitching pop-up screen Copy pop-up screen 1 in the copy and deletion of cycle stitching pop-up screen.

  • Page 72: Teaching

    How to delete Deletion pop-up screen 2 in the copy and deletion of cycle stitching pop-up screen. 1) Press 2) Deletion pop-up screen is displayed. 5 : Select the cycle stitching pattern to be deleted with “+” and “-”. When is pressed here, the screen returns to the former one without performing deletion.

  • Page 73: Performing The Programmed Stitching Using The Cycle Stitching

    (5) Performing the constant-dimension stitching using the cycle stitching Constant-dimension stitching, zigzag patterns of which are different from each other in the respective steps can be performed by setting the number of stitches in the cycle stitching. Example) In the process of label attaching, change over the zigzag patterns of constant-dimension Label stitching of standard zigzag stitch and...

  • Page 74: Information

    2) Set the initial value with “+” and “–” switch. When the switch is held pressed and the set value exceeds the digit of 100, the set value increases/decreases by 100 unit. When setting the value near to 100 digit, press the switch each time.

  • Page 75: Sewing Common Data

    (1) Sewing common data 1) Press 2 in the information screen. The first screen of sewing common data setting 1 2 3 1 2 3 2) Set the items below in the first screen. 1) Center 1 : Limiting procedure of max. zigzag width limitation For the limiting procedure of max.

  • Page 76: Position Of The Stitch Base Line Of Condensation Custom

    1) 1 pattern : Mirror inversion is “1” pattern Sewing direction only. After completion of inversion pattern, LED lights up. the pattern returns to the original one. Pattern 2) Continuous : The machine continuously mode operates the inversion pattern after the inversion until thread trimming is performed Continuous or, the mirror switch is pressed again.

  • Page 77: Sewing Management Information

    (2) Sewing management information For the sewing management information, there are warning of time of replacement of needle, that of time of cleaning and that of time of replacement of oil as the maintenance management information. [Maintenance management function] Sewing management information screen 1) Press 1 to display the maintenance function screen.
  • Page 78 Clear screen 1 : The screen returns to the maintenance function screen without performing clearing. 2 : The screen returns to the maintenance function screen after executing clearing. Warning screen Warning screen is displayed when the warning time is reached. 1 : When 1 is pressed, the screen can be cleared.
  • Page 79 Sewing management information selection screen 2) Press 2 to display the maintenance function screen. (For other functions, refer to the Engineer's Manual.) Maintenance function screen 34 and 5 : Warning time input screen is displayed. 3) Set the warning time with 2. Setting time inputted is shown in reverse video at 4. Warning time input screen 3 Clear screen is displayed.

  • Page 80: Communication Mode

    [Maintenance personnel level] 1) Turn ON the power. When the needle bar is not in the UP position, turn the handwheel to bring the needle bar to its UP position. 2) Press switch 1 for approximately three seconds to display the information screen. Information screen (Maintenance personnel level)] 2 3 4 5 6 7 2 : Ver display For the details, refer to the Engineer...
  • Page 81 Example of download Example) Parameter file No. 70 of the smart media is downloaded to the condensation custom pattern at the sewing end No. 10. 1) Open the smart media cover and insert the smart media (Optional Part No. : HX005750000) from the insertion opening.
  • Page 82 4) Selection of file No. of the smart media Press 3 in the communication setting screen to display the file No. of smart media input screen. File No. input screen Input the file No. of smart media with 2. The file No. which has been inputted is displayed in .
  • Page 83 3) Selection of communication method Press 2 in the communication setting screen to display the communication method setting screen. [Explanation of the pictograph] 1 : Download from the smart media 2 : Download from SU-1 3 : Upload to the smart media 4 : Upload to SU-1 Press 3 to select the upload to the smart media.

  • Page 84: Setting For Functions

    6-16. Setting for functions (1) How to change over to the function setting mode Do not perform switch operations other than those described in the following explanations. Cau tion Be sure to re-turn the power switch ON after one second or more has passed. If the power is turned ON immediately after turning it OFF, the sewing machine may not work normally.
  • Page 85 Change set value with “+/–” Key of switch 5. The set value has been changed from “0” to “3”. When this changed value is acceptable, press switch 7. When you desire to return the value to the previous one, press switch 6. Turn OFF the power switch and turn ON the power switch after approximately...
  • Page 86 3) This screen is the function setting screen. Change the setting No. with “+/–” Key of switch 3. For the details of setting No., see page 81. Setting No. Set value Example) Changing the number of rotation of reverse feed stitching (Setting No.

  • Page 87: Function Setting List

    If it is necessary to change the set value, please purchase the Engineer's Manual and follow the instructions. (Descriptions of setting in this list are the standard values at the time of delivery of LZ-2290A.) However, contents of function setting are subject to change for improvement of function and performance without notice.
  • Page 88 If it is necessary to change the set value, please purchase the Engineer's Manual and follow the instructions. (Descriptions of setting in this list are the standard values at the time of delivery of LZ-2290A.) However, contents of function setting are subject to change for improvement of function and performance without notice.
  • Page 89 If it is necessary to change the set value, please purchase the Engineer's Manual and follow the instructions. (Descriptions of setting in this list are the standard values at the time of delivery of LZ-2290A.) However, contents of function setting are subject to change for improvement of function and performance without notice.
  • Page 90 If it is necessary to change the set value, please purchase the Engineer's Manual and follow the instructions. (Descriptions of setting in this list are the standard values at the time of delivery of LZ-2290A.) However, contents of function setting are subject to change for improvement of function and performance without notice.

  • Page 91: Detailed Explanation Of Selection Of Functions

    (3) Detailed explanation of selection of functions 1 Selection of the soft-start function (Function setting No.1 N-SOFT) The needle thread may fail to interlace with the bobbin thread at the start of sewing when the stitching pitch (stitch length) is small or a thick needle is used. To solve such problem, this function (called “soft-start”) is used to limit the sewing speed, thereby assuring successful formation of the starting stitches.
  • Page 92 5 Optional switch function selection (Function setting No.12 SW 2) : It is used only when it is combined with the machine head provided with the optional switch.(Optional SW kit Part No. : 40003640) A. In case of the machine with the auxiliary B.
  • Page 93 9 Function of reverse feed stitching on the way (Function setting Nos. 30 to 33 OBT, OBTS, OBTT) Functions of the limit of number of stitches and thread trimming command can be added to the touch back switch on the sewing machine head. Function setting No.
  • Page 94 9 Holding time of lifting presser foot (Function setting No.47 T-FL) Solenoid type presser foot lifter (No. 46 0) can adjust the holding time control of lifting presser foot. This function automatically lowers the presser foot when the time set with the setting No. 47 has passed after lifting the presser foot.
  • Page 95 !1 Foot lift function after thread trimming (Function setting No.55 FLAT) This function can automatically lift the presser foot after thread trimming. This function is effective only when it is used in combination with the AK device. 0 : off Function of automatically lifting the presser foot is not provided.
  • Page 96 !6 Function of soft-down of presser foot (with AK device only) (Function setting Nos.70 and 49 F-SDFL, T-FLWT) This function can softly lower the presser foot. This function can be used when it is necessary to decrease contact noise, cloth defect, or slippage of cloth at the time of lowering the presser foot.

  • Page 97: External Interface

    @1 Function of pedal curve selection (Function setting No.87 F-PCS) This function can perform the selection of the curve of number of rotation of the sewing machine against the depressing amount of the pedal. Change to this function when you feel that inching operation is hard or that pedal response is slow. 0 : Number of rotation of the sewing machine in terms of the depressing amount of the pedal increases linearly.

  • Page 98: Sewing

    7. SEWING 7-1. Adjusting the thread tension WARNING : In case of thread-breakage. It may occur that the thread tangles on the thread take-up lever. In this case, remove the thread tangling around the thread take-up lever by raising the thread take-up cover. At this time, be careful not to cut your fingers with the knife.

  • Page 99: Adjusting The Pressure Of The Presser Foot

    7-2. Adjusting the pressure of the presser foot WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. 1) Turn the presser spring regulator 1 clockwise A to increase the pressure given by the presser foot.
  • Page 100 5) Put mirror SW 2 in installing base 6 and fix it with setscrew 1. (Put mirror SW 2 in installing base 6 so that the installing base 8 is inserted in the mirror SW 2.) (Note) Freely adjust the height of the respective switches. B.

  • Page 101: Hand Switch

    7-4.Hand switch 1) Reverse feed switch 1 Press reverse feed switch 1 and reverse feed is performed. When it is released, normal feed is performed. * Reverse feed switch is not installed on the types other than WB, CB, and 0B types. (Touch-back device (separately sold), Part No.

  • Page 102: Standard Adjustment

    8. STANDARD ADJUSTMENT 8-1. Adjusting the amount of oil in the hook (LZ-2290A-SS • A-SU (-7) ) WARNING : Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine.

  • Page 103: Adjusting The Height Of The Presser Bar

    8-3. Adjusting the height of the presser bar 1) To change the height of the presser bar or the inclination of the presser foot, loosen the presser bar connection screw 1 and perform the adjustment properly. 2) After the adjustment, securely tighten the screw. 8-4.

  • Page 104: Height And Inclination Of The Feed Dog

    To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. (1) LZ-2290A*S 1.2mm 1) To adjust the height of the feed dog, loosen the screw 1 and turn the feed driving link pin 2 using a screwdriver.

  • Page 105: Hook Adjusting Mode

    8-6. Hook adjusting mode Cau tion When the hook adjusting mode is set, it is possible to adjust the hook by turning the handwheel. 1) Turn ON the power. When the needle bar is not in the UP position, turn the handwheel to bring the needle bar to its UP position.

  • Page 106: Attaching / Removing The Hook

    B. as shown in the figure on the left. Never let A protrude from line B. Part No. of hook 3 is 22525877. Do not use the hook other than that designated by JUKI. Reference...

  • Page 107: Adjusting Height Of The Needle Bar

    (2) Confirmation Maximize the zigzag width (LZ-2290A : 5 mm). Bring the needle to the leftmost position of the zigzag stroke. Now, confirm that the top end of the needle eyelet is spaced 0.2 to 0.5 mm away from the blade point of the hook.

  • Page 108: Adjusting The Stop Position Of The Needle

    8-10. Adjusting the stop position of the needle (1) Stop position of the needle after thread trimming 1) The needle stops at the standard stop position when marker dot A engraved on the handwheel cover is aligned with white marker dot B engraved on the handwheel.

  • Page 109: Adjusting The Needle Thread Feeding Device (Thread Trimmer Type Only)

    If the initial position of the moving knife is not correct Loosen the nut 3 , and move the moving knife to the right or left until the pin 1 meets the marker dot 2 . Then, tighten the nut 3 . (2) Adjusting the thread trimming timing Put roller 4 in the cam groove.

  • Page 110: Adjusting The Bird's Nest Prevention (Cb) Type Wiper

    8-13. Adjusting the bird's nest prevention (CB) type wiper WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. Position of the wiper 1) Adjust the white marker dot on the handwheel 1 to the position where it is aligned with the marker dot on...

  • Page 111: Replacing Procedure Of The Bird's Nest Prevention (Cb) Type Presser Knife

    8-14. Replacing procedure of the bird’s nest prevention (CB) type presser knife WARNING : To protect against possible personal injury due to abrupt start of the machine, be sure to start the following work after turning the power off and ascertaining that the motor is at rest. The needle thread cutting knife is mounted on the presser delivered as standard for the bird's nest prevention (CB) type.

  • Page 112: Maintenance

    9. MAINTENANCE WARNING : To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing machine, carry out the work after turning OFF the power switch and ascertaining that the motor has completely stopped. To prevent personal injuries, when a fuse has blown out, be sure to replace it with a new one with the same capacity after turning OFF the power switch and removing the cause of the blown-out of the fuse.

  • Page 113: Power Voltage Changeover Procedure (Power Voltage Setting Procedure)

    (2) Power voltage changeover procedure (power voltage setting procedure) WARNING : To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing machine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or more. To prevent accidents caused by unaccustomed work or electric shock, request the electric expert or engineer of our dealers when adjusting the electrical components.

  • Page 114: Adjusting The Contrast Of The Operation Panel Display

    (3) Adjusting the contrast of the operation panel display 1) Press in the direction of arrow mark the click of section A of cord outlet cover 2 assembled in the rear of Light Shade operation panel 1 and remove the cover. 2) Turn LCD screen display brightness adjustment variable resistor 3 to adjust the brightness (contrast) of LCD screen.

  • Page 115: Cleaning The Cooling Fan

    (6) Cleaning the cooling fan installed on the under cover Cloth waste or the like gathers around the cooling fan filter section installed on the lower part of the under cover, and there is a case where cooling effect of the machine head is decreased.

  • Page 116: Replacing Procedure Of The Hook Shaft Oil Wick

    2) Draw out hook shaft oil wick 1 from hook shaft oil wick screw 2 which has been drawn out and push a new hook shaft oil wick 1 (JUKI Part No. : 11015906) to hook shaft oil wick screw 2 (JUKI Part No.

  • Page 117: At A Time Like This

    10. AT A TIME LIKE THIS ! Confir mation In case of the following, check again before you judge the case as trouble. Phenomenon Cause Corrective measure Buzzer peeps and the sewing The measures described on the left are Tilt the machine head after turning OFF machine fails to operate when the taken for safety when tilting the machine the power.

  • Page 118: Error Display

    11. ERROR DISPLAY Error is informed by means of the panel display, machine head mirror LED blink and control box buzzer. Reference Three different kinds of screens of the panel display screen appear due to the difference of the procedures. 1) Error screen disappears when the operator removes the cause.

  • Page 119: Error Code List (Error Display In Panel)

    11–1. Error code list (Error display in panel) There are the following error codes in this device. These error codes interlock (or limit function) and inform the problem so that the problem is not enlarged when any problem is discovered. When you request our service, please confirm the error codes.

  • Page 121: Warning List

    Warning list Contents and display of warning Corrective measure Remarks Replacement of needle warning A201 • Press to close warning screen, and Refer to “Sewing perform replacement of needle. Then clear management the value in the clear screen. information, p.71. •...

  • Page 122: Troubles And Corrective Measures

    The thread is too thick for the needle. Use a suitable thread or needle. c. The thread is broken by heat. Use JUKI Silicone Oil Lubricant unit. !1 When the stitch is skipped. Refer to the following paragraphs, Stitch skipping.
  • Page 123 Bird’s nest prevention (CB) type See page Cause Phenomenon Corrective measure Needle 1 Improper wiper position. Adjust the wiper to the proper position. thread clamp 2 Air pressure drop. Set the air pressure to 0.6Mpa. failure 3 Dust bag becomes excessively filled with Remove waste thread from the dust bag.
  • Page 124 Contents...

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