JUKI LZ-2280B Instruction Manual
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JUKI LZ-2280B Instruction Manual

JUKI LZ-2280B Instruction Manual

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LZ-2280B
INSTRUCTION MANUAL

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Summary of Contents for JUKI LZ-2280B

  • Page 1 LZ-2280B INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    CONTENTS I. SPECIFICATIONS ..................1 1. Specifications of the sewing machine head ..................1 2. Specifications of the control box ..................... 1 3. DRAWING OF TABLE ......................... 2 II. INSTALLATION ................... 3 1. Installation of the sewing machine ....................3 2. Installing the pedal sensor ........................ 4 3. How to install the needle ........................4 4. Connecting the connector ......................... 5 5. I nstalling the reactor box [Only for the EU type models] ............... 6 6. Lubrication ............................9 7. Adjusting the amount of oil in the hook ..................
  • Page 3 VI. FOR THE OPERATOR ................28 1. Operating procedure of the sewing machine ................28 2. Operation panel built in the machine head ..................30 3. Operating procedure of the sewing pattern .................. 33 4. Setting of functions ......................... 38 5. Digital types operation ........................40 6. Function setting list ......................... 41 7. Details of setting of the main functions ..................45 8. Stitch balance for back-tacking ...................... 50 9. How to use the bobbin counter ...................... 53 10. Saving and initialization of the function setting data ..............54 11. About the USB ..........................56 12. List of error codes ..........................57 VII.

  • Page 4: Specifications

    3-step zigzag : Zigzag width = more than 8 mm) Needle SCHMETZ 438SUK (Nm75) : Nm65 to 90, DP x 134 (#10) : #9 to 14 JUKI CORPORATION GENUINE OIL 7 Equivalent continuous emission Equivalent continuous emission sound pres- Equivalent continuous emis-...

  • Page 5: Drawing Of Table

    3. DRAWING OF TABLE – 2 –...

  • Page 6: Installation

    II. INSTALLATION 1. Installation of the sewing machine 2) Place the sewing machine on a horizontal and 1) Carry the sewing machine with two persons as plane place when placing it and do not place any shown in the figure. protruding thing such as a screwdriver or the like. (Caution) Never hold the handwheel since it rotates.

  • Page 7: Installing The Pedal Sensor

    2. Installing the pedal sensor 1) Install the pedal sensor to the table with mount- ing screws ❶ supplied with the unit. It is necessary to install the pedal sensor at such a position that the connecting rod is perpendicu- lar to the table. 2) After the completion of installation of the pedal sensor on the table, place the sewing machine head on the table.

  • Page 8: Connecting The Connector

    4. Connecting the connector WARNING : • To protect against personal injury resulting from abrupt start of the sewing machine, be sure to turn the power OFF, unplug the machine and wait for five minutes or more before installing the pedal sensor. • To prevent damage of device caused by maloperation and wrong specifications, be sure to connect all the corresponding connectors to the specified places. (If any of the connectors is inserted into a wrong connector, not only the device corresponding to the connector can break but also it can start abruptly, inviting the risk of personal injury.) • To prevent personal injury caused by maloperation, be sure to lock the connector with lock.

  • Page 9: Installing The Reactor Box [Only For The Eu Type Models]

    5. Installing the reactor box [Only for the EU type models] * For the EU-type models, install the reactor box that is supplied with the sewing machine. 1) Detach reactor cover ❷ from reactor box ❶ to separate from reactor base asm. ❸ . * The reactor cover can be detached with ease by inserting a tool that has a thin flat tip such as a flat-blade screwdriver between the cover and base. ❶ ❸ ❷ 2) Slide reactor ❺ in the direction of the arrow to insert into reactor base asm. ❸ . 1. When inserting the reactor, detach bundled wire clamp ❻ beforehand.
  • Page 10 4) Take out wood screws (ST4.2 x 25) from screw ❸ bag ❹ . Secure reactor base asm. ❸ and re- actor ❺ to the undersurface of sewing machine table with the wood screws (at four locations). ❺ Refer to the instruction figure shown in ❹ the following step of procedure 11) for the mounting positions of the reactor cover and reactor base asm.
  • Page 11 8) Fit reactor cover ❷ over reac- tor base asm. ❸ . ❸ ❷ Take care not to allow the cord to be caught under reactor cover ❷ . Pass the power cord through cord bushing  . Then, insert the power cord into the slit portion of reactor cover ❷ and hold it with reactor base asm. ❸ . 9) Take out reactor cover fixing screws from screw bag ❹ . Secure reactor cover ❷ to reactor base asm. ❸ with the fixing screws (at four locations). ❷...

  • Page 12: Lubrication

    1) Put foamed polyurethane pad ❶ in the oil pan ❷ . 2) Fill the oil pan ❷ with JUKI CORPORATION GENUINE OIL 7 up to the level of “HIGH” mark 3) Add the oil as soon as the oil level comes down to “LOW”...

  • Page 13: Adjusting The Amount Of Oil In The Hook

    Turn the adjusting screw in the “–” direction (clock- ❶ wise) to decrease it. ❷ 1. After the adjustment, idle the sewing machine at the sewing speed to be used for sewing about 30 seconds. Then, check the oil quantity by comparing with the sample which shows the appropriate oil splash (marks). 2. When adjusting the amount of oil in the hook, perform the adjustment in a way of reducing the oil amount after somewhat increasing it. 3. The amount of oil in the hook has been adjusted at the max. sewing speed at the time of deliv- ery. When you always use the sewing machine at low sewing speed, there is a possibility that trouble occurs due to the lack of amount of oil in the hook. When the sewing machine is used always at low sewing speed, perform the adjustment of the amount of oil in the hook. 4. Oil may leak from the hook driving shaft section if oil amount adjustment screw ❶ is fully loosened during operation. Do not use it with fully loosened. If the required amount of oil is not fed to the hook unless oil amount adjustment screw ❶ is nearly fully loosened, the hook driving shaft oil wick (JUKI part number: 11015906) may have problems such as clogging. In such a case, replace the hook driving shaft oil wick with a new one. 5. Never adjust screw ❷ of the hook oil quantity adjusting valve since it is fixed. – 10 –...

  • Page 14: Adjusting The Amount Of Oil (Oil Splashes)

    8. Adjusting the amount of oil (oil splashes) WARNING : Be extremely careful about the operation of the machine since the amount of oil has to be checked by turning the hook at a high speed. (1) Confirmation of the amount of oil in the hook ② Position to confirm the amount of oil (oil splashes) ① Amount of oil (oil splashes) confirmation paper Hook Approx. 10 mm Approx. 70 mm Oil splashes confirmation paper * Use any paper available regardless of the material. * When carrying out the procedure described below in 1) and 2), confirm the state that the needle thread from the thread take-up lever to the needle and the bobbin thread are removed, the presser foot is lifted and the slide plate is removed. At this time, take extreme caution not to allow your fin- gers to come in contact with the hook. 1) If the machine has not been sufficiently warmed up for operation, make the machine run idle for approxi- mately three minutes. (Moderate intermittent operation) 2) Place the amount of oil (oil spots) confirmation paper under the hook immediately after the machine stops run- ning.

  • Page 15: Winding The Bobbin Thread

    9. Winding the bobbin thread 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) Insert the bobbin deep into the bobbin winder For slippery threads spindle ❹ until it will go no further. 2) Pass the bobbin thread pulled out from the spool rested on the right side of the thread stand following the order from ❶...

  • Page 16: Inserting The Bobbin Case And The Bobbin

    10. Inserting the bobbin case and the bobbin 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. Placing a bobbin into the bobbin case 1) Take a bobbin by your right hand with the thread drawn out about 5 cm and place it into the bob- ③...

  • Page 17: Threading The Machine Head

    11. 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. ❶ LZ-228*B-7 LZ-228*B ❷ ❹ ❸ ❺ 1) Turn the handwheel by hand to raise the needle to the highest point. 2) Pass the thread in the order of the numbers as illustrated.

  • Page 18: Adjusting The Pedal

    12. Adjusting the pedal 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) Attaching the connecting rod 1) Move the pedal adjusting plate ❸ in the direction of the arrow to make the motor control lever ❶ and the pedal connecting rod ❷...

  • Page 19: Adjusting The Sewing Machine

    III. ADJUSTING THE SEWING MACHINE WARNING : In case of thread-breakage, it may occur that the thread tangles on the thread take-up lever. In such a case, turn the power off, raise the thread take-up cover and remove the thread which has twined around the thread take-up. At this time, be extremely careful to protect your hand from being cut by the knife. 1. Adjusting the thread tension (1) Adjusting the needle thread tension 1) Adjust the needle thread tension using the ten- sion nut ❶ . Turning the tension nut clockwise increases the ❷ ❹ needle thread tension, or counterclockwise de- creases it.

  • Page 20: Adjusting The Zigzag Width

    ❸ in 3) Release the lever, and the knob will be locked up in the given position. ❷ (3) Adjusting the needle position ★ JUKI models LZ-2280B, LZ-2284B and LZ- 2287B have the needle position changing ❶ lever by which the needle position can be changed as desired. To change the needle entry point, move needle po- sition changing lever ❶...

  • Page 21: Adjusting The Pressure Of The Presser Foot

    3. 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 ❶ clockwise A to increase the pressure given by the presser foot. ❶...

  • Page 22: Adjusting The Stitch Length

    6. Adjusting the stitch length 1) Turn the stitch length dial ❶ in the direction of the arrow so that the number corresponding to the desired stitch length meets the marker dot A engraved on the machine arm. 2) Numbers on the stitch length dial are calibrated in “mm”.

  • Page 23: Height And Inclination Of The Feed Dog

    8. Height and inclination of the feed dog 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) Height of the feed dog 1.2 mm 1) To adjust the height of the feed dog, loosen setscrew ❶ , shown in the figure, and turn feed driving link shaft ❷...

  • Page 24: Adjusting Height Of The Needle Bar

    10. Adjusting height of the needle bar 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) Set the zigzag width to “0”. Bring the needle to the center of the zigzag stroke. 2) Remove the presser foot, throat plate, semicircle ❷...

  • Page 25: Marker Dots On The Handwheel

    12. Marker dots on the handwheel 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 upper stop position of the needle bar is obtained by aligning marker dot ❶ on the cover with white marker dot ❷...

  • Page 26: Needle Thread Feeding Device

    (2) Adjusting the thread trimming timing Put roller ❹ in the cam groove. Then, gradually turn the handwheel in the reverse direction of rotation (direction A). The handwheel will go no further when marker dot ❻ on the pulley cover is aligned with red marker dot ❼...

  • Page 27: Position Of The Wiper

    15. Position of the 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. 1) Align marker dot ❶ on the pulley cover with white marker dot ❷ on the handwheel. 2) Move the rod in the direction of the arrow, and ❷...

  • Page 28: Changing Over The Needle-Throwing Method

    ❷ ❹ 18. LED light The LZ-2280B Series is provided with an LED light. 1) The brightness of the LED light can be adjusted with bright- ness adjustment switch ❶ shown in the figure on the left. (To three types and in five steps) * The types of colors: Cold color, warm color and mixed color.

  • Page 29: Care

    3. If oil is mistakenly swallowed, diarrhea or vomitting may occur. Put oil in a place where children cannot reach. 1) Before starting the sewing machine, fill oil pan ❶ with JUKI MACHINE OIL #7 up to HIGH mark A. 2) Add oil before the oil surface comes down to reach the LOW mark B. 3) When you operate the machine after lubrication, you will see splashing oil through oil sight win- dow ❷...

  • Page 30: Optional

    V. OPTIONAL 1. Joining foot for the lockstitch presser foot To use the presser foot for lockstitch, the "joining foot for the lockstitch presser foot" has to be used ❶ Joining foot for the lockstitch presser foot (Part No.: D1551586000) ❷ Setscrew (Part No.: SS7090910SP) ❶ ❷...

  • Page 31: For The Operator

    VI. FOR THE OPERATOR 1. Operating procedure of the sewing machine * The switch configuration differs with the specifications. 1) Turning the power ON with the power switch Single phase 220 to 240V The power to the sewing machine is placed in the ON state when the "|" mark side of power switch ❶ (1ø 220 - 240V type) is pressed; or in the OFF state when the "0"...
  • Page 32 3) The pedal is operated in the following four steps: a. The machine runs at low sewing speed when you lightly depress the front part of the pedal. ❹ ❼ b. The machine runs at high sewing speed when ❻ you further depress the front part of the pedal.

  • Page 33: Operation Panel Built In The Machine Head

    2. Operation panel built in the machine head For the type with a thread trimmer For the type without a thread trimmer ❽ ❽ ❾ ❾ ❻ ❻ ❹ ❹ ❼ ❼ ❺ ❺ ❸ ❸ ❶ ❷ ❶ ❷ Sewing information display screen K L M N P Q R T V W How long the Screen key must be Function display pressed...
  • Page 34 How long the Screen key must be Function display pressed Short time Used to decrease the maximum sewing speed ❺ Long time Continuous input is possible (by keeping the key held pressed for three seconds or more) Short time This key is used to add one stitch to the number of reverse feed ❻...
  • Page 35 How long the Screen key must be Function display pressed Short time Used to change over the soft-start function between enable and dis- able Long time This key is used to save the function setting data. (Refer to P.54.) Short time This key is used to change over enable/disable of the wiper function.

  • Page 36: Operating Procedure Of The Sewing Pattern

    3. Operating procedure of the sewing pattern (1) Reverse feed stitching pattern Reverse feed stitching at sewing start and reverse feed stitching at sewing end can be separately pro- grammed. [Setting procedure of the reverse feed stitching] 1) The reverse feed stitching pattern at the begin- ning of sewing can be changed over to "enable / double reverse feed stitching / disable"...
  • Page 37 (2) Overlapped stitching pattern Overlapped stitching pattern can be programmed. A : Number of stitches of normal stitching setting : 0 to 15 stitches B : Number of stitches of reverse stitching setting : 0 to 15 stitches C : Number of stitches of normal stitching setting : 0 to 15 stitches D : Number of times of repetition : 0 to 15 times 1. When process D is set to 5 times, the sewing is re- peated as A → B → C → B → C.
  • Page 38 (3) Constant-dimension stitching pattern The constant-dimension stitching pattern can be set. [How to set the constant-dimension stitching] * Straight stitching  to enable the constant-dimension 1) Press sewing pattern (straight stitch). When the constant-dimension sewing pattern is enabled, is displayed on the display portion L. ❻ -  Immediately after the constant-dimension stitch- ing is enabled, the numbers of reverse feed stitching processes (A, B, C and D) are displayed on the display section Z.
  • Page 39 * Others 1) Enable / disable of the sewing pattern can be  . Every time changed over by pressing  is pressed, the selected pattern is enabled and the valid patterns are displayed on display portion N to Q. Immediately after one of the stitching patterns is enabled, the numbers of reverse feed stitching [E/F process] processes (A, B, C and D) are displayed on the...
  • Page 40 (4) Polygonal-shape stitching pattern A polygonal-shape stitching pattern can be set. [How to set a polygonal-shape stitching pattern]  to enable the polygonal shape 1) Press stitching. When the polygonal shape stitching is enabled, is displayed on display portion Q. The number of seams (P1 - PF) can be set (A) ❻...

  • Page 41: Setting Of Functions

    4. Setting of functions Functions can be selected and specified. ❷ . 1) Press The content on display section A is changed over to display function setting number (P-**). (The display item which was previously changed is displayed unless the power has not been turned off after the previous change.) * If the screen display does not change, re-carry out operation described in step 1).
  • Page 42 Screen returns to the previous screen. Example) To change the setting No. P-01 "the maximum number of revolutions": ❷ to change over to the setting Press [Parameter number] number display. ❽ to  to select setting num- Press ber P-01. ❸ to confirm the number (A). Press switch ❷...

  • Page 43: Digital Types Operation

    5. Digital types operation (1) Comparison Table of LCD Display Fonts and Actual Fonts Arabic Numerals : Actual Display (2) Digital Display on the Key Board English Alphabet : Actual Display Actual Display – 40 –...

  • Page 44: Function Setting List

    6. Function setting list Setting level Setting range Default With a Without With a Without With a Without Item Description thread a thread thread a thread thread a thread trimmer trimmer trimmer trimmer trimmer trimmer Maximum sewing The maximum sewing speed reached by fully de- 100-5000 4000 speed...
  • Page 45 Setting level Setting range Default With a Without With a Without With a Without Item Description thread a thread thread a thread thread a thread trimmer trimmer trimmer trimmer trimmer trimmer Changeover of the The function of needle up/down correction switch is needle up/down changed over with this function setting item.
  • Page 46 Setting level Setting range Default With a Without With a Without With a Without Item Description thread a thread thread a thread thread a thread trimmer trimmer trimmer trimmer trimmer trimmer Back-tack solenoid The BT solenoid ON timing at the end of sewing is 50-330 ON timing at the set with this function setting item.
  • Page 47 Setting level Setting range Default With a Without With a Without With a Without Item Description thread a thread thread a thread thread a thread trimmer trimmer trimmer trimmer trimmer trimmer P143 Sewing speed for Sewing speed during the reverse feed stitching on 200-3200 1350 reverse feed stitch-...

  • Page 48: Details Of Setting Of The Main Functions

    7. Details of setting of the main functions 1. In following parameter operation key, it will display corresponding speed value. 2. In following function, after value changed, press key to save the value, otherwise they will lost after turning power off. ① How to set [Maximum Sewing Speed] ❻ -  ❽ -  ❸ ❸ ❷ ❽ to  select ① Press ❻ to  key Press ❷ to enter user Press the parameter code P01. Then, to adjust the Maximum Sewing parameter.
  • Page 49 ③ How to set [End Back-Tacking Speed] ❻ -  ❽ -  ❸ ❸ ❷ ❽ to  select ① Press ❻ to  key Press ❷ to enter user Press the parameter code P05. Then, to adjust the End Back-Tacking parameter. speed. ❸ to enter [Function press ②...
  • Page 50 ⑤ How to set [Constant-Stitch Sewing Speed] ❻ -  ❽ -  ❸ ❸ ❷ ❽ to  select ① Press ❻ to  key to Press ❷ to enter user Press the parameter code P09. Then, adjust the Constant-Stitch Sewing parameter. speed. ❸ to enter [Function press ②...
  • Page 51 ⑧ Function of reverse feed stitching on the way (Function setting Nos. P139 to P143) 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.139 Function of reverse feed stitching on the way is selected. 0 : OFF Normal back-tack function 1 : ON Function of reverse feed stitching on the way...
  • Page 52 ⑨ Function of pedal curve selection (Function setting No. P138) This function can perform the selection of the curve of sewing speed of the sewing machine against the de- pressing amount of the pedal. Change to this function when you feel that inching operation is hard or that pedal response is slow. 0 : Sewing speed in terms of the depressing amount of the pedal increases linearly.

  • Page 53: Stitch Balance For Back-Tacking

    8. Stitch balance for back-tacking ① How to balance stitches for [Start Back-Tacking] (Function setting Nos. P18 and P19) Example) Step 1 : Setting stitch number for Start Back-Tacking A and B = 3 Step 2 : Sewing the pattern in normal speed. Step 3 : If unbalanced situation is appeared please correct it as below: Suggestion : Select the balance stitches for Section A before selecting for B.
  • Page 54 ② How to balance stitches for [End Back-Tacking] (Function setting Nos. P25, P27 and P77) Example) Step 1 : Setting stitch number for End Back-Tacking C and D = 3 Step 2 : Sewing the pattern in normal speed. Step 3 : If unbalanced situation is appeared please correct it as below: Suggestion : Select the balance stitches for Section C before selecting for D. Case 1 : Longer C and shorter D Adjustment : [P26] Decrease the set value.
  • Page 55 ③ How to balance stitches for [Bar Tacking] (Function setting Nos. P32 and P33) Example) Step 1: Setting stitch number for Bar-Tacking A = B = 4 and turns of Bar-Tacking D = 4 Step 2: Sewing the pattern in normal speed. Step 3: If unbalanced situation is appeared please correct it as below: Start point Case 1 : Longer A and shorter B Adjustment : [P32] Decrease the set value.

  • Page 56: How To Use The Bobbin Counter

    9. How to use the bobbin counter In the case the number of stitches that can be counted on the bobbin counter (Function setting number P113) is set to "x10", the bobbin count complete screen is displayed when the bobbin counter reaches the set value to notify the operator that the bobbin has to be changed.

  • Page 57: Saving And Initialization Of The Function Setting Data

    10. Saving and initialization of the function setting data (1) Saving the function setting data It is possible to save the function setting data you have changed arbitrarily. ❷ under the normal sewing state to 1) Press display the function setting screen. Referring to the explanation given in "VI-4. Setting of functions" p.38, select the func- tion setting number you want to save and press ❸...
  • Page 58 (2) Initializing the function setting data  held pressed for three seconds 1) Keep in the normal sewing state to display the "rst" screen (B). ❸ , the LCD will change 2) When you press to full-screen display (C) for a moment and the set value of the function setting number you have saved as described in "Saving the function setting data"...

  • Page 59: About The Usb

    11. About the USB WARNING : The device to be connected to the USB port should have the rated current value or less as shown below. If any device rated current value of which is higher than the rated current value, the main body of the sewing machine or the USB device connected can be damaged or malfunction. Rated current value of the USB port USB port on the electrical box side: Maximum rated current value of 1 A [Insertion position of the USB thumb drive] The USB connector is equipped on the electrical box ❶ . To use a USB thumb drive, remove connector cover ❷...

  • Page 60: List Of Error Codes

    12. List of error codes Error num- Description How to correct High-voltage error (320 V or E-01 Turn the power OFF. Check the supply voltage. more) Low-voltage error (170 V or E-02 Turn the power OFF. Check the supply voltage. less) E-03 Turn the power OFF. Check the connection of the connector to CPU communication fault E03P the operation panel and the cable.

  • Page 61: 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. ⑪ When the stitch is skipped. Refer to the following paragraphs, Stitch skipping.
  • Page 62 Trouble Cause Corrective measures page ① When the needle is inserted in a wrong way. Stitch skipping a. The needle is not entirely inserted into the needle Fully insert the needle. bar. b. The needle eye is not facing straight to the opera- Let the needle eye face straight to the tor.

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