JUKI LU-2828V-7 Instruction Manual
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JUKI LU-2828V-7 Instruction Manual

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LU-2828V-7
INSTRUCTION MANUAL

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Summary of Contents for JUKI LU-2828V-7

  • Page 1 LU-2828V-7 INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATIONS ....................1 1-1. Specifications of the sewing machine head ................1 1-2. Specifications of the control box ....................1 2. INSTALLATION .....................2 2-1. Mounting positions of the devices and table................2 2-2. Installation of the sewing machine ...................3 2-3. Installing the oil shield .......................5 2-4.
  • Page 3 3-2. Attaching and removing the bobbin ..................26 3-3. Threading the hook ........................27 3-4. Winding a bobbin ........................27 3-5. Threading the machine head ....................29 3-6. Installing the attachment ......................30 4. ADJUSTING THE SEWING MACHINE .............. 31 4-1. Thread tension ..........................31 4-1-1. Adjusting the tension of thread tension controller No. 1 ..........31 4-1-2.
  • Page 4 6-4. Simplified chart of panel displays ..................86 6-5. List of memory switch data .....................87 6-6. List of errors ..........................92 6-7. Memory switch data .........................96 7. CARE ........................98 7-1. Standby mode ...........................98 7-2. Cleaning ............................99 7-3. Applying grease ........................99 7-4. Replacing the fuse........................100 7-5.
  • Page 5 9-5-4. Copying/deleting a condensation custom ..............144 9-6. Simple lock of the screen ......................145 9-7. Version information ........................145 9-8. Adjustment of brightness of the LED panel .................146 9-9. Information ..........................147 9-9-1. Data communication ......................147 9-9-2. USB ............................ 150 9-9-3. NFC ............................ 151 9-10.

  • Page 6: Specifications

    Electronic control Alternate vertical feed control Electronic control Lubricating oil JUKI New Defrix Oil No. 1 (equivalent to ISO standard VG7) or JUKI MACHINE OIL No. 7 Number of patterns Sewing pattern ......99 patterns (For the polygonal shape sewing, as many as 10 patterns can be registered.)

  • Page 7: Installation

    2. INSTALLATION 2-1. Mounting positions of the devices and table The devices including the oil pan and electrical box are to be mounted to the positions as shown in the figure below. ❻ ❺ ❼ ❶ ❽ ❸ ❹ ❾ ❷...

  • Page 8: Installation Of The Sewing Machine

    2-2. Installation of the sewing machine To prevent possible accidents caused by the full of the sewing machine, perform the work by two persons or more when the machine is moved. Never hold the handwheel since it rotates. Place the sewing machine on a horizontal and plane place when placing it and do not place any protruding thing such as a screwdriver or the like.
  • Page 9 Attaching the oil pan Align Table Operator’s side Fix the oil pan ❾ supplied with the machine on the table by tightening ten wood screws. ❾ Align Attach a filter  to the oil pan ❾ as shown in Multi-layered part the figure.

  • Page 10: Installing The Oil Shield

    Securely attach head support rod  until its rib is closely pressed against the table. When it is really necessary to conduct work with the machine head supporting rod re- moved for the purpose of maintenance and repair, it is necessary to carry out the work with two or more persons.

  • Page 11: Pneumatic Components (Only For The Models Provided With The Stitch Skipping Detecting Device And Bobbin-Thread Remaining Amount Detecting Device)

    2-4. Pneumatic components (Only for the models provided with the stitch skipping detecting device and bobbin-thread remaining amount detecting device) 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.
  • Page 12 (3) Exhaust tube Pass ø8 exhaust air tube ❶ through hole ❷ in the table stand and other relevant hole. Then, ❷ route the air tube downward. If the humidity is high, water may come out of the air tube. ❶...

  • Page 13: Installing The Thread Stand

    2-5. Installing the thread stand Assemble the thread stand unit, and insert it in the hole in the machine table. ❷ Tighten nut ❶ . For ceiling wiring, pass the power cord through spool rest rod ❷ . ❶ 2-6. Installing the thread guide pin Fix needle thread guide pin ❶...

  • Page 14: Installing The Handwheel Cover (Only In The Case The Protection Cover Sensor Is Provided)

    2-7. Installing the handwheel cover (only in the case the protection cover sensor is provided) Fix handwheel cover ❶ with screw ❷ . At this time, check the following: • The handwheel cover smoothly fits into ball catch ❸ . •...

  • Page 15: Installing The Electrical Box

    2-8. Installing the electrical box 2-8-1. Preparing for installation of the control box ❻ ❶ ❺ ❸ ❹ 0.8 mm ❷ Secure toothed washer ❷ and vibration-proof rubber ❸ to control box ❶ . (At four locations) * Tighten the toothed washer until it protrudes the control box surface by 0.8 mm. Secure control box mounting plate ❹...

  • Page 16: Installing The Reactor Box (Only For The Eu Type Models)

    2-10. Installing the reactor box (Only for the EU type models) 1） Connect the terminals of power cord ❶ of the ❸ ❷ ❹ SC-952 to reactor-box PCB asm. ❷ and to re- actor box mounting plate ❸ . Connect brown wire A to the first connector and blue wire B to the third connector respectively from the top of terminal block on the reactor box...

  • Page 17: Installing The Control Box For Stitch Skipping Detecting Device (Only For The Models Provided With The Stitch Skipping Detecting Device And The Bobbin-Thread Remaining Amount Detecting Device)

    2-11. Installing the control box for stitch skipping detecting device (only for the models provided with the stitch skipping detecting device and the bobbin-thread remaining amount detecting device) Fix DIN rail ❶ supplied with the sewing machine ❷ on the undersurface of table with two wood screws ❷...

  • Page 18: Connecting The Power Source Cord

    2-13-2. Connecting the power source cord Voltage specifications at the time of delivery from the factory are indicated on the voltage indication seal. Connect the cord in accordance with the specifications. Power indication tag Never use under the wrong voltage and phase. (For example : In the case of 200V) Rating plate •...

  • Page 19: Connecting The Cords

    2-14. Connecting the cords DANGER : 1. 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. 2.

  • Page 20: Connection Of The Cords Coming From The Stitch Skipping Detecting Device, Bobbin-Thread Remaining Amount Detecting Device And Cover Sensor

    2-14-2. Connection of the cords coming from the stitch skipping detecting device, bobbin-thread remaining amount detecting device and cover sensor ❷ Gray (encoder junction cable) CN30 ❶ Junction cable of the bobbin-thread remaining amount detecting device and stitch skipping detecting device ❹...
  • Page 21 [Wiring the handwheel cover sensor cord] Connect the connectors in the following order refer- ring to Figs. 1 and 2. Pass handwheel cover sensor cord ❺ through the hole in table. ❺ Connect the connector CN*1  of protective cover sensor cable ❸ to the connector  of handwheel cover sensor cord ❺...
  • Page 22 [Wiring of the control box for stitch skipping de- tecting device] Connect the connectors in the following order refer- ring to Figs. 1 and 3. The connectors cannot be connected un- less the correct order is followed. 1) Connect solenoid valve cable ❽ of the air blower solenoid valve_SD to the CN4.

  • Page 23: Handling The Cords

    2-15 Handling the cords DANGER : 1. 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. 2.

  • Page 24: Attaching The Connecting Rod

    Bundle cord ❷ coming from the control box for ❶ stitch skipping detecting device and tube ❸ ❷❸ coming from the solenoid valve on the under- surface of electrical box ❶ . Fix the cord and tube which are bundled in the above step 2) with accessory 10 mm long ca- ble clip band ❼...

  • Page 25: Adjustment Of The Pedal

    2-17. Adjustment of the pedal WARNING : Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the sewing machine. 2-17-1. Installing the connecting rod Move pedal ❸ to the right or left as illustrated by the arrows so that motor control lever ❶...

  • Page 26: Lubrication

    "4-12. Adjusting the oil quantity in the hook" p.42) 2. For the oil for hook lubrication, purchase JUKI NEW DEFRIX OIL No. 1 (Part No. : MDFRX1600C0) or JUKI MACHINE OIL #7 (Part No. : MML007600CA). 3. Be sure to lubricate clean oil.

  • Page 27: How To Use The Operation Panel (Basic Explanation)

    2-20. How to use the operation panel (Basic explanation) 2-20-1. Selection of the language (operation to be done at first) Select the language to be displayed on the operation panel when you turn ON the power to your sewing machine for the first time after the purchase. Note that, if you turn the power OFF without selecting the lan- guage, the language selection screen will be displayed every time you turn ON the power to the sewing ma- chine.
  • Page 28 ③ Retrieval of the origin ❻ Press ❻ to bring the origin retrieval needle bar to its upper position. In the case "U090 Initial operation upper po- sition stop function" is set to "1", the screen shown on the left is not displayed, but the needle bar automatically goes up to its up- per position.

  • Page 29: Names And Functions Of The Panel Keys

    2-20-2. Names and functions of the panel keys * Changeover between the operator mode and the maintenance personnel mode is carried out by pressing ❶ and ❷ simultaneously. <Operator mode> <Maintenance personnel mode> ❺ ❸ ❽ ❼  ❾ ❹ ❶...

  • Page 30: Basic Operation

    2-20-3. Basic operation ① Turning ON the power switch When you turn ON the power switch, the wel- come screen is displayed. ② Selecting a sewing pattern The sewing screen is displayed. ・ Select a sewing pattern. "6-2. Sewing patterns" p. 50 Refer to details.

  • Page 31: Preparation Before Sewing

    3. PREPARATION BEFORE SEWING 3-1. Attaching 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. Switch "off"...

  • Page 32: Threading The Hook

    3-3. Threading the hook 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. Carefully draw the thread through threading slit ❶...
  • Page 33 [Bobbin winding mode] To wind a bobbin only or to check the oil quantity in the hook, the bobbin winding mode should be used. Depress the pedal to start winding a bobbin. ❶ Display the mode screen by pressing ❶ . Select the "2.

  • Page 34: Threading The Machine Head

    3-5. 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...

  • Page 35: Installing The Attachment

    3-6. Installing the attachment Remove screws ❷ (three pieces) from front bed slide ❶ . Install the attachment with those screws. ❷ ❶ – 30 –...

  • Page 36: Adjusting The Sewing Machine

    4. ADJUSTING THE SEWING MACHINE 4-1. Thread tension 4-1-1. Adjusting the tension of thread tension controller No. 1 Turn thread tension nut No. 1 ❶ clockwise A to shorten the length of thread remaining on the ❶ top of needle after thread trimming. Turn the nut counterclockwise B to lengthen it.

  • Page 37: Thread Take-Up Spring

    4-2. Thread take-up spring 4-2-1. When you want to change the stroke of the thread take-up spring Loosen screw ❷ . Adjust thread take-up spring ❶ by moving it in the slot. ❷ ❶ 4-2-2. When you want to change the tension of the thread take-up spring To adjust the tension of thread take-up spring ❶...

  • Page 38: Presser Foot (Active Presser Device)

    4-3. Presser foot (Active presser device) WARNING : Do not place anything under the presser foot when turning the power ON. If the power is turned ON while placing something under the presser foot, the sewing machine displays E910. If the power to the sewing machine is turned ON while the material, etc. is placed under the presser foot, the presser stepping motor will generate a specific sound during origin retrieval.

  • Page 39: Adjusting The Stitch Length

    4-4. Adjusting the stitch length 1. There may be the cases where the feed amount of the operation panel and the actual sewing pitch are different from each other in case of the use in the state other than the standard delivery or ma- terial used.

  • Page 40: Adjusting The Alternating Vertical Movement Amount

    4-6. Adjusting the alternating vertical movement amount The alternating vertical movement amount is dis- played in section A on the operation panel. (Example of display : 2.0 mm) [How to adjust] ❶ is pressed, the alternating 1) When vertical movement amount input screen is displayed.

  • Page 41: Thread Trimming And Condensation Stitching Function

    4-7. Thread trimming and condensation stitching function Thread length remaining on the material after thread trimming is shortened by performing condensation stitching before thread trimming. Due to computerization of the feed mechanism, the machine generates noise that is specific to the stepping motor when it runs at a low speed.
  • Page 42 [How to adjust condensation pitch] In the case of performing condensation stitching after thread trimming (condensation stitching is placed in ON), set values of the stitch length and that of the number of Normal stitch length condensation stitching can be changed. Adjust those set values appropriately according to the item to be sewn.

  • Page 43: Led Hand Light

    4-8. LED hand light WARNING : In order to protect against personal injury due to unexpected start of the sewing machine, never bring hands near the needle entry area or place foot on the pedal during the adjustment of intensity of the LED. * This LED is intended to improve operability of the sewing machine and is not intended for maintenance.

  • Page 44: Custom Switch

    4-11. Custom switch ② ③ ④ ⑤ ⑥ ① ⑦ ⑧ Operations can be assigned to machine head switches ① to ⑥ , hand switch ⑦ and jog dial ⑧ . The initial values (states) are as described below. ① Machine head switch 1: One touch changeover switch 1 ②...
  • Page 45 Select the switch to be set. Select the function item to be assigned to the switch. Then, select the input signal status ( In the case the function item i51 or beyond is selected, the operation to be carried out when the button is pressed is set.
  • Page 46 [Description of operations of the custom switch] Function item Function item No function is set One-touch changeover 1 input Needle up/down correction stitch One-touch changeover 2 input Thread trimming function One-touch changeover 3 input One stitch correction stitch One-touch changeover 4 input Function of lifting the presser foot when the pedal Reverse-feed correction stitch is placed in its neutral position...

  • Page 47: Adjusting The Oil Quantity In The Hook

    4-12. Adjusting the oil quantity in the hook WARNING : To check the amount of oil supplied to the hook, take care not to allow your finger and the oil-amount checking sheet to come in contact with the moving parts such as the hook and feed mechanism. Contacting those parts can cause injury.

  • Page 48: Operation Of The Sewing Machine

    5. OPERATION OF THE SEWING MACHINE 5-1. Resetting the safety clutch 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 safety clutch functions when an excessive load is applied to the hook or the other components dur- ing sewing.

  • Page 49: Power Lamp

    5-3. Power lamp Power lamp ❶ lights up when the power to the sew- ❶ ing machine is turned ON. Power lamp ❶ flashes on and off in the case an error occurs. – 44 –...

  • Page 50: Knee Switch

    5-4. Knee switch 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) Installation of the knee switch 1) Assemble the knee switch ❶...

  • Page 51: How To Use The Operation Panel

    6. HOW TO USE THE OPERATION PANEL 6-1. Explanation of the sewing screen (when selecting a sewing pattern) On the sewing screen, the shape and set values of the currently-sewn sewing pattern are displayed. The display and button operation differ according to the selected sewing pattern. Note that the sewing screen shows two different displays, i.e., the sewing pattern display and the counter display.
  • Page 52 Free stitching pattern Constant-dimension sewing pattern (Maintenance personnel mode) (Maintenance personnel mode) Multi-layer stitching pattern Polygonal-shape stitching pattern (Maintenance personnel mode) (Maintenance personnel mode) Switch/display Description ❶ Mode key This switch is used for displaying the menu screen. Level 1 is displayed by pressing this switch in the normal manner. Level 2 or Level 3 is displayed by keeping this switch held pressed for three seconds or more for the former or six seconds or more for the latter.
  • Page 53 Switch/display Description ❻ Sewing-end reverse-feed This switch is used for changing the ON/OFF status of reverse feed stitching at the end stitch button of sewing. When reverse feed stitching at the end of sewing is placed in the OFF state, mark is displayed at the upper left of the button.
  • Page 54 Switch/display Description Number of stitches This button is used for displaying the number of stitches of constant-dimension sewing or the number of stitches registered for each step of polygonal-shape stitching. → This button is displayed when constant-dimension sewing or polygonal-shape stitch- ing is selected.

  • Page 55: Sewing Patterns

    6-2. Sewing patterns Patterns which are frequently sewn can be registered as sewing patterns. Once the patterns are registered as sewing patterns, the desired sewing pattern can be called up only by selecting its sewing pattern number. As many as 99 different patterns can be registered as sewing patterns. 6-2-1.

  • Page 56: List Of Sewing Patterns

    6-2-2. List of sewing patterns The list of stored sewing patterns are displayed on the screen. Under the maintenance personnel mode, sewing patterns can be created, copied and deleted. A on the sewing screen of each Press mode. The sewing pattern number list screen is dis- played.
  • Page 57 Name Function ❶ Pattern No. button This button is used for displaying numbers of the registered sewing patterns and cycle patterns. (Cycle pattern numbers that are not registered are not displayed.) When this button is pressed, the sewing pattern is put into the selected state. Display range: Sewing pattern numbers 1 to 99 and cycle patterns 1 to 9.

  • Page 58: Reverse Feed Stitching (At Start) Pattern

    6-2-3. Reverse feed stitching (at start) pattern A stitch shape of the reverse feed stitching (at start) is set by following the steps of procedure described below. (1) Enabling the reverse feed stitching (at start) pattern The sewing-start reverse feed stitching pattern can be operated when the sewing-start reverse feed stitching function is placed in the ON state mark is not displayed).
  • Page 59 ◆ In the case of maintenance personnel mode ① Selecting the type of reverse feed stitching at the beginning of sewing 1) Display the sewing-start reverse-feed stitching edit screen referring to the case of the opera- tor mode. ❶ to display the reverse feed 2) Press stitching type input screen.
  • Page 60 ・ In the case of selecting condensation stitch ❸ ❾ The stitch length, etc. can be set with Change the number of condensation stitches ❾ . with The value you have entered is confirmed by  Then, the sewing screen is pressing displayed.
  • Page 61 ③ Editing the data on reverse feed stitching at the beginning of sewing  is pressed on the sew- 1) When ing-start reverse feed stitching screen, the "sewing-start reverse feed stitching data edit screen" is displayed. <Sewing-start reverse feed stitching data edit screen> ・...
  • Page 62 ・ Inputting the correction value for reverse-feed stitch length (B) B is pressed, the reverse-feed 1) When stitch length correction value input screen is displayed. 2) Input a correction value with numeric keypad (-9.0 to 9.0)  is pressed, the value you have 3) When input is confirmed and the screen returns to <Reverse-feed stitch length correction value input screen>...
  • Page 63 ・ Setting the needle thread tension function (E) E is pressed, the needle 1) When thread tension function selection screen is dis- played. 2) Select the status (enable/disable) of the nee- dle thread tension function with button  .  is pressed, the value you have 3) When input is confirmed and the screen returns to the "sewing-start reverse feed stitching data...
  • Page 64 ④ Applying the changed items  to confirm the aforementioned Press operation and return the current screen to the sewing screen. <Sewing-start reverse-feed stitching screen (maintenance personnel mode)> – 59 –...

  • Page 65: Reverse Feed Stitching (At End) Pattern

    6-2-4. Reverse feed stitching (at end) pattern A stitch shape of reverse feed stitching (at end) is set by following the steps of procedure described below. (1) Enabling the reverse feed stitching (at end) pattern The sewing-end reverse feed stitching pattern can be operated when the sewing-end reverse feed stitching function is placed in the ON state mark is not displayed).

  • Page 66: Editing The Sewing Patterns

    6-2-5. Editing the sewing patterns (1) Edit method (in the case free stitching, constant-dimension sewing or multi-layer stitching is se- lected) * In the case polygonal-shape stitching is selected, refer to "9-2. Setting up the polygonal-shape stitch- ing" p. 121. ①...
  • Page 67 * In the case a constant-dimension sewing pattern is selected, the number of stitches ❸ input screen is displayed by pressing at the time of setting the number of stitches. (Only in the case the number of stitches can be changed) ❾...
  • Page 68 (2) Sewing adjustment mode Sewing performance can be checked using the sewing conditions you have changed before finalizing the sewing conditions. ❶ on the sewing screen un- 1) Press der the maintenance personnel mode. The "sewing adjustment mode screen" is dis- played.
  • Page 69 (3) Adjusting the lower stop position WARNING : The needle bar moves during adjustment of this item. Be careful not to place your fingers under the needle. ❶ on the sewing screen under 1) Press the maintenance personnel mode. The "sewing data edit screen" is displayed. ❶...
  • Page 70 (4) Adjusting the needle entry alignment position of the needle bar WARNING : The needle bar moves during adjustment of this item. Be careful not to place your fingers under the needle. ❶ on the sewing screen under 1) Press the maintenance personnel mode.

  • Page 71: List Of Pattern Functions

    6-2-6. List of pattern functions (1) Setting items under the pattern sewing mode Data Unit of Item name Input range change S001 Shape Constant Polygonal Free Multi-layered dimension shape S002 Number of stitches 1 stitch ― ― 1 to 15 1 to 10000 S003 Stitch length...
  • Page 72 Data Unit of Item name Input range change S017 → Reverse-feed stitch length 0.1 mm -9.0 to 9.0 ― -9.0 to 9.0 correction value S018 → Presser foot pressure -20 to 200 -20 to 200 / Common ― / Common setting S007 setting S007 S019...
  • Page 73 Data Unit of Item name Input range change S037 → Reverse-feed stitch length 0.1 mm -9.0 to 9.0 ― -9.0 to 9.0 correction value S038 → Presser foot pressure -20 to 200 -20 to 200 / Common ― / Common setting S007 setting S007 S039...
  • Page 74 Data Unit of Item name Input range change S054 When the preset number of stitches is reached, automatic thread trimming is ：OFF 　 ：OFF 　 conducted simultaneously ― ― ：ON ：ON S055 Condensation stitching ：OFF　 ：ON during thread trimming (shorter-thread remaining) S057 Material edge sensor ON/ ：OFF　...
  • Page 75 Data Unit of Item name Input range change One-touch changeover 1 - 3 ― ― S071 → Sewing speed limit 10 sti/min 150 to U096 S081 / Common ― ― setting S062 S091 S072 → Stitch length 0.1 mm -9.0 to 9.0 S082 / Common ―...
  • Page 76 (2) Setting items for the polygonal-shape stitching steps Unit of Data No. Item name Input range change Step 01 S201 Step changeover : Number of stitches　 : One-touch switch : Multi-layered part S203 Sensor value to change over the 1000 to 3000 step S204 Number of stitches...
  • Page 77 Unit of Data No. Item name Input range change S215 Stop and presser foot lifting ：OFF　 ：ON S216 Lifting height of presser foot when 0.5 mm 0.0 to 20.0 the sewing machine stops S217 One shot ：OFF　 ：ON S218 Material end sensor on/off ：OFF　...

  • Page 78: Teaching Function

    6-2-7. Teaching function This is the function that enables entry of the number of stitches of a sewing pattern using the actual number of stitches sewn. This function screen can be displayed from the sewing data edit screen. * The teaching function can be used in the case the "constant-dimension sewing" or "polygonal-shape stitching"...
  • Page 79 (2) How to set (polygonal-shape stitching) ① Turning ON the teaching function ❷ to turn ON the teaching function. Press ❷ ❸ <Number of stitches input screen> ② Start teaching, and confirm data on a step-by-step basis The input value is set to 0 (zero). Depress the pedal to start sewing. Count the number of stitches until the sewing machine stops.

  • Page 80: One-Touch Utility Changeover Function

    6-2-8. One-touch utility changeover function In the case the one-touch changeover function is assigned to the custom switch, the stitch length, sewing speed, etc. can be changed over by pressing the custom switch. Four different one-touch changeover functions can be set from 1 to 4. Data that is changed over with the one-touch changeover function ・...

  • Page 81: Registration Of A New Sewing Pattern

    6-2-9. Registration of a new sewing pattern A newly-created sewing pattern is registered by following the steps of procedure described below. ① Selecting the new-pattern creating function ❶ ❶ to display the sewing pat- 1) Press tern management screen. ❷ . 2) Press ❷...
  • Page 82 ② Confirming the data on the created sewing pattern ❸ ❸ to display the sewing pattern 1) Press No. registration. 2) Enter the pattern number to be registered using the numeric keypad. ❹ to confirm the pattern number 3) Press you have entered.

  • Page 83: Copying A Pattern

    6-2-10. Copying a pattern ❶ ❶ to display the sewing pat- 1) Press tern management screen. ❷ . 2) Press ❷ <Sewing pattern management screen> 3) Input a copy pattern number with the numeric keypad. ❹ to confirm the pattern number 4) Press you have entered.

  • Page 84: Narrow-Down Function

    6-2-11. Narrow-down function It is possible to select and display sewing pattern(s) which include target characters from the sewing patterns stored in memory by entering the target characters such as the product number, process or comment. This func- tion can be used both under the operator mode and maintenance personnel mode. ①...
  • Page 85 ② Select the target pattern to be narrowed down ❸ ❼ 1) Select sewing patterns from which a de- sired pattern is narrowed down using but- ❸ . 2) The character input screen is displayed by pressing ❹ . It is possible to enter a character(s) which is to be used for narrow-down operation with the character string button.

  • Page 86: Counter Function

    6-3. Counter function This function counts sewing in the predetermined unit and gives a visible alarm on the screen when the preset value is reached. 6-3-1. Displaying the sewing screen under the counter display mode Three different types of the counter are available, i.e., the bobbin thread counter, the sewing count- er and the pitch time counter.

  • Page 87: How To Set The Counter

    6-3-3. How to set the counter ① Selecting the counter setting ❶ ❶ . 1) Display the mode screen by pressing 2) Select the "Counter setting". <Mode screen> ② Setting the type of counter, current value of counter and preset value for counter The sewing counter and the bobbin counter should be set following the same procedure.
  • Page 88 1) Select the desired type of counter. ❷ to confirm the type of counter 2) Press you have selected. ❷ <Counter type screen> 1) Select the current counter value. 2) Enter with the numeric keypad. ❷ to confirm the type of counter 3) Press you have selected.
  • Page 89 Bobbin thread counter UP counter (adding method): The bobbin thread counter adds one to its current value every time the sewing machine sews 10 stitches. When the current value reaches the preset value, the count-completion screen is displayed. DOWN counter (subtracting method): The bobbin thread counter subtracts one from its current value every time the sewing machine sews 10 stitches.

  • Page 90: How To Reset The Count-Completion State

    ③ Confirming the data entered ❸ Confirm the data on counter setting items you ❸ to return the have entered. Then, press screen to the mode screen. ❸ again, the screen is When you press returned to the sewing screen. <Mode screen>...

  • Page 91: Simplified Chart Of Panel Displays

    6-4. Simplified chart of panel displays – 86 –...

  • Page 92: List Of Memory Switch Data

    6-5. List of memory switch data Item Setting range Unit U001 Soft-start function 0 to 9 Stitch The initial value differs with the machine head. (0: OFF) U007 Bobbin thread count-down unit 0 to 2 Stitch 0: 10 stitches / 1: 15 stitches / 2: 20 stitches ー...
  • Page 93 Item Setting range Unit ー U039 Start position of rotation 10 to 1000 Set start position from neutral pedal potision. (Pedal Stroke) ー U040 Start position of acceleration 10 to 1000 Set accelerating position from neutral pedal position. (Pedal Stroke) ー...
  • Page 94 Item Setting range Unit － U068 Presser foot lifting operation changeover 0 to 1 The presser foot lifting operation when depressing the back part of pedal is changed over. 0: 2-step operation / 1: Manual operation depending on the pedal stroke when the back part of pedal is depressed ー...
  • Page 95 Item Setting range Unit ー U196 Thread tension when lifting the presser foot (left) 0 to 200 ー U199 Pedal giving priority to sewing machine for standing work 0 to 1 The switch which is given priority when the pedal is used for sewing machine for standing work is set.
  • Page 96 Item Setting range Unit U403 Auto-OFF of back light 0 to 20 Back light of the panel is automatically turned off in the case the operation panel is not operated for a certain period of time. ー U404 Selection of part number and process / comment display 0 to 1 This memory switch is used for specifying either the part number/process is dis- played or comment is displayed on the sewing screen.

  • Page 97: List Of Errors

    6-6. List of errors Error Description of error Cause Item to be checked code E000 Execution of data initial- • The existing control box has been re- This is not a failure. ization (This is not an moved and a new one is mounted. error.) •...
  • Page 98 Error Description of error Cause Item to be checked code E205 ISS buffer capacity • Buffer for storing ISS data will soon be • Output the ISS data. runout warning filled to its capacity. If the buffer is used continuously, the stored data will be automatically erased on FIFO basis.
  • Page 99 Error Description of error Cause Item to be checked code E811 Over-voltage • In the case a voltage that is equal to or • Check whether the supply voltage of more than the guaranteed voltage is "rated supply voltage ±10 % or more" input.
  • Page 100 Error Description of error Cause Item to be checked code E967 Deviation error of the al- • The alternating vertical movement motor • Does the alternating vertical move- ternating vertical move- is overloaded. ment motor move smoothly without ment motor hitch? E971 Pitch motor IPM over-...

  • Page 101: Memory Switch Data

    6-7. Memory switch data The memory switch data is the sewing machine operation data which commonly affects all sewing patterns and cycle patterns. ① Selecting the category of the memory switch data ❶ ❶ on the sewing screen to display 1) Press the "mode screen".
  • Page 102 ② Setting the memory switch Select an item to edit from the memory switch list. Press button ❷. ❷ <Memory switch edit screen> ③ Confirming the data entered 1) Enter a set value with numeric keypad ❸ and ❹ . ❺...

  • Page 103: Care

    7. CARE Perform the maintenance below every day for longer use of your machine. 7-1. Standby mode The maintenance mode should be used for maintenance of the sewing machine. Under the standby mode, the sewing machine does not start running even if the pedal is depressed. Under this mode, the jog dial is also disabled.

  • Page 104: Cleaning

    3. Be aware that grease can leak from the thread take-up cover and needle bar ❶ if the amount of grease is excessive. 4. Be sure to use JUKI GREASE A TUBE ❶ (part number : 40006323). – 99 –...

  • Page 105: Replacing The Fuse

    7-4. Replacing the fuse DANGER : 1. To avoid electrical shock hazards, turn OFF the power and open the control box cover after about five minutes have passed. 2. Open the control box cover after turning OFF the power without fail. Then, replace with a new fuse with the specified capacity.

  • Page 106: Adjustment Of The Machine Head (Application)

    8. ADJUSTMENT OF THE MACHINE HEAD (APPLICATION) 8-1. Needle-to-hook relation WARNING : To protect against possible personal injury due to abrupt start of the sewing machine, be sure to change over the operation mode to the "hook timing adjustment mode". The presser foot automatically goes up when changing over the operation mode to the "hook timing adjustment mode".

  • Page 107: Adjusting The Timing Between The Needle And The Blade Point Of Hook

    8-2. Adjusting the timing between the needle and the blade point of hook ❸ ❹ ❷ ❶ ❺ 0.05 to 0.1 mm Hook driving shaft C Place the sewing machine into the hook adjustment mode. Loosen lower shaft setting collar clamp screw ❸ and hook driving shaft saddle setscrews ❹ and ❺ mounted on the top surface of bed.

  • Page 108: Adjusting The Hook Needle Guard

    8-3. Adjusting the hook needle guard When a hook has been replaced, be sure to check the position of the hook needle guard. ❹ As the standard position of the hook needle guard, hook needle guard ❷ must push the side face of ❶...

  • Page 109: Adjusting The Moving Knife, The Counter Knife And The Bobbin Thread Clamp

    8-5. Adjusting the moving knife, the counter knife and the bobbin thread clamp 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. •...
  • Page 110 Adjust so that a clearance of 1.0 to 2.0 mm is ❶ provided between the top end of moving knife ❸ and that of counter knife ❶ when the moving knife is in its return end (the moving knife is in the standby state).

  • Page 111: Adjusting The Thread Trimming Cam Timing

    • Adjusting the bobbin thread clamp pressure Loosen screw  . Adjust the clamp pressure by turn- ing cramp arm  in the direction of the arrow. Adjust the clamp pressure so that the bobbin thread comes off at the pressure of 0.3 N. 8-6.

  • Page 112: Adjusting The Thread Clamp Device

    8-7. Adjusting the thread clamp device Needle thread can be rolled in on the wrong side of material. [Feature] • So-call "bird's nest phenomenon" which occurs on the wrong side of material can be reduced by using thread clamp device ① and performing condensa- tion stitching in combination.
  • Page 113 [Adjusting the remaining length of needle thread] Adjust the length of thread remaining at the needle by turning thread tension control nut No. ② . 1) Turn thread tension No. 1 nut ② clockwise (in di- rection A), to shorten the thread length remaining on the needle after thread trimming or counter- clockwise (in direction B), to lengthen the thread ②...
  • Page 114 [Response to problems occurring at the beginning of sewing] • In the case needle thread breakage occurs when using a thin thread or fragile thread • In the case needle thread is not tucked on the wrong side of material •...

  • Page 115: Active-Presser Multi-Layered Section Detection Function

    8-8. Active-presser multi-layered section detection function 8-8-1. Multi-layered section detection function When this function is used, the sewing machine detects a multi-layered section of the material, automati- cally changes over the sewing parameter to one-touch changeover 4 parameter ("6-2-8. One-touch utility changeover function"...
  • Page 116 2. Set a "threshold" for the multi-layered sec- tion detection. ❻ . 1) Press "Multi-layered section changeover function ON sensor value screen" is displayed. (For the "threshold" for turning OFF the multi-layered section changeover function, ❼ and set the threshold in the press ❻...
  • Page 117 4) Place the multi-layered section of material under the presser foot, and press  . <Multi-layered section changeover function ON sensor value teaching screen> The value of  is automatically calculated, and that value becomes the "threshold" for the multi-lay- ered section detection.

  • Page 118: Turning Off The Multi-Layered Section Changeover Function By The Number Of Stitching

    8-8-2. Turning OFF the multi-layered section changeover function by the number of stitching If the sensor value drops below the "multi-layered section changeover function OFF threshold" setting, while the multi-layered section detection is enabled, the sewing parameter automatically returns to the previous one which is used before turning ON the multi-layered section changeover function.
  • Page 119 3) Enter the number of stitches with numeric key- pad ❸ . ❹ to confirm the setting. Press Factory-set value at the time of delivery : 0 (Number of stitches is not set) Setting range : 0 to 200 * If this value is set to 0 (zero), the multi-layered ❹...

  • Page 120: Grease Shortage Alarm

    8-9. Grease shortage alarm 8-9-1. Regarding the grease shortage alarm When the time of maintenance of grease ap- proaches, the error message "E220 Warning against shortage of grease" is displayed. ❶ . In this This error is reset by pressing state, the sewing machine can be continuously used for a certain period of time.

  • Page 121: Regarding K118 Error Resetting Procedure

    ❶ 8-9-3. Regarding K118 error resetting procedure ❶ held pressed for three seconds. 1) Keep The "mode screen" is displayed. <Sewing screen> 2) Select the "1. Memory switch". The "memory switch type selection screen" is displayed. <Mode screen> 3) Select the "1. Display all". The "memory switch edit screen"...

  • Page 122: How To Use The Operation Panel (Application)

    9. HOW TO USE THE OPERATION PANEL (APPLICATION) 9-1. Management of sewing patterns 9-1-1. Creation of a new pattern A newly-created sewing pattern is registered by following the steps of procedure described below. * This operation is to be carried out under the maintenance personnel mode. ①...
  • Page 123 ③ Setting the pattern function ❽ ❻ 1) Set the pattern function using buttons ❼ . Refer to "6-2. Sewing patterns" p. ❽ . 2) Press The "sewing pattern number registration screen" is displayed. ❻ to display the data discard con- Press firmation screen.

  • Page 124: Copying A Pattern

    9-1-2. Copying a pattern The selected pattern (sewing pattern and cycle pattern) can be copied to any other pattern of the specified number. * This operation is to be carried out under the maintenance personnel mode. Explanation is given below using copying of a sewing pattern as an example. ①...

  • Page 125: Deleting A Pattern

    9-1-3. Deleting a pattern This section describes how to delete the selected pattern (sewing pattern, cycle sewing pattern). * This operation is to be carried out under the maintenance personnel mode. ① Selecting the sewing pattern deletion function ❶ ❶ on the sewing screen under Press the maintenance personnel mode.

  • Page 126: Setting Up The Polygonal-Shape Stitching

    9-2. Setting up the polygonal-shape stitching A polygonal-shape stitching pattern consists of <Example of pattern> Step5 30 steps (at the maximum) of constant-dimen- sion sewing patterns. Specific sewing conditions can be set on a step-by-step basis. * This operation is to be carried out under Step1 Step4 the maintenance personnel mode.
  • Page 127 ② Editing the number of stitches of polygonal shape stitching and the step changeover condition to be satisfied by a new step 1) Step changeover condition is displayed in ❷ . Press ❷ to place the number of stitches in the selected state.
  • Page 128 ❾ 5) Setting other sewing data ❽ . The type of sewing data displayed on the "sewing data edit screen" changes according to the step changeover reference selected in the aforementioned item number 3. (See the table shown below.) The presser lifter operates after thread trimming according to the setting of the final step.
  • Page 129 ❾ is pressed, the "sewing ad- 6) When justment mode screen" is displayed. To set the sewing data under the sewing ad- justment mode, refer to "(2) Sewing adjust- ment mode" p. <Sewing adjustment mode screen>  is pressed, the "teaching input 7) When screen"...
  • Page 130 8) In the case a step can be additionally regis- tered to a sewing pattern, step  which is not yet set is displayed in the last field. 9) When displayed step  is pressed, the "step changeover reference selection screen" is displayed.
  • Page 131 12) Set other sewing data  in the same manner as item number 5. <Sewing data edit screen>  is pressed, a step containing 13) When 100 stitches is inserted immediately before the selected step. When the inserted step field button is pressed, the "sewing data edit screen"...

  • Page 132: Creating A New Polygonal-Shape Stitching Pattern

    9-2-2. Creating a new polygonal-shape stitching pattern ① Selecting the new-pattern creating function Display the "new sewing pattern creation screen" referring to ① in "9-1-1. Creation of a new pattern" p. 117. ② Creating a polygonal shape stitching pattern ❶ Display the "new sewing pattern creation screen"...

  • Page 133: Cycle Pattern

    9-3. Cycle pattern It is possible to combine several different sewing ・・・ patterns as one cycle pattern for sewing. As many as 10 patterns can be input in one cycle Pattern Pattern Patterns 1 to 10 pattern. This function is helpful in the case several can be registered different patterns are regularly repeated in a product sewing process.

  • Page 134: Editing Cycle Sewing Data

    9-3-2. Editing cycle sewing data ① Displaying the sewing screen (cycle pattern) for cycle pattern ❶ on each sewing screen. Press Step key The "cycle sewing step edit screen" is displayed. ❶ <Sewing screen (Cycle pattern)> ② Setting a cycle sewing pattern 1) Sewing pattern numbers (10 numbers at the maximum) which have registered are dis- played in ❷...

  • Page 135: Creating A New Cycle Pattern

    9-3-3. Creating a new cycle pattern * This operation is to be carried out under the maintenance personnel mode. ① Selecting the new cycle pattern creating function ❶ ❶ on the sewing screen under 1) Press the maintenance personnel mode. The "Sewing pattern number management screen (in numerical order)"...
  • Page 136 3) Display a desired pattern number referring to "6-2-2. List of sewing patterns" p. ❹ . Press ❺ to confirm the setting. 4) Press The current screen returns to the "new cycle sewing step edit screen". ❹ ❺ <Registered cycle pattern selection screen (In numerical order)>...

  • Page 137: Setting The Step From Which Cycle Sewing Pattern Is Started

    9-3-4. Setting the step from which cycle sewing pattern is started In the case it is necessary to re-sew a cycle sewing pattern from the middle of the cycle sewing pattern after the occurrence of troubles such as thread breakage, it is possible to re-start sewing from an arbitrary step of the cycle sewing pattern.

  • Page 138: Custom Pitch

    9-4. Custom pitch A pattern design consisting of two or more different stitch- Step1 length groups (10 steps at the maximum) can be registered 1mm 3 stitches as a custom pitch. As many as 20 different custom pitches can be registered. Step2 As many as 100 stitches of the same stitch length can be set 2mm 2 stitches...
  • Page 139 ❷ ❷ . 2) Press The "stitch length input screen" is displayed. <Sewing data edit screen> ❸ 3) In the case a custom pitch pattern(s) has been ❸ is displayed. registered, ❸ . Press The "custom pitch setting screen" is displayed. <Stitch length input screen>...

  • Page 140: Creating A New Custom Pitch

    9-4-2. Creating a new custom pitch A new custom pitch pattern creation procedure is described as follows using < Figure: Example of the cus- tom pitch > as an example. ① Selecting the custom pitch setting on the mode screen ❶...
  • Page 141 ④ Creating a custom pitch Stitch length 1) Press ❻ to put the step you have pressed in the selected state. 2) The selected custom pitch number is dis- played in A, and the step number which is being edited and the total number of steps are displayed in B.
  • Page 142 ⑤ Confirming the numeric value After the completion of editing, press <Custom pitch edit screen> The custom pitch list screen is displayed with the custom pitch number you have created added. <Custom pitch list screen> – 137 –...

  • Page 143: Custom Pitch Edit Function

    9-4-3. Custom pitch edit function ① Selecting the custom pitch edit function Display the "custom pitch edit screen" referring "9-4-2. Creating a new custom pitch" p. 135. <Custom pitch edit screen> ② Editing the custom pitch value In this section, procedure for editing the custom pitch value is described. Refer to "9-4-2.

  • Page 144: Copying/Deleting A Custom Pitch

    9-4-4. Copying/deleting a custom pitch (1) Copying a custom pitch ① Displaying the custom pitch list screen 1) Display the "custom pitch list screen" referring "9-4-2. Creating a new custom pitch" p. 135. ❶ of the copy source to put it in 2) Press the selected state.

  • Page 145: Condensation Custom Pattern

    9-5. Condensation custom pattern Condensation stitches can be sewn while specifying needle Step 1 entry points as desired, by setting a condensation custom. 1 mm 3 stitches As many as 20 steps can be created in one pattern. The max- imum number of patterns that can be registered is nine.
  • Page 146 ② Selecting the new condensation custom creating function Registered condensation custom patterns are displayed on the screen. ❷ . Press The "new condensation custom pattern creation pattern number input screen" is displayed. ❷ <Condensation custom pattern list screen> ③ Inputting the condensation custom number 1) Enter the pattern number with numeric keypad ❸...
  • Page 147 1. In the case of setting the number of stitches Condensation custom pattern input procedure is described as follows using < Figure: Example of the condensation custom pattern > as an example. The number of stitches can be input in the range from 1 to 100.

  • Page 148: Condensation Custom Edit Function

    9-5-3. Condensation custom edit function ① Selecting the condensation custom edit function Display the "condensation custom edit screen" referring to "9-5-2. Creating a new condensa- tion custom" p. 140. <Condensation custom edit screen> ② Editing the condensation custom value In this section, procedure for editing the condensation custom value is described. Refer to "9-5-2.

  • Page 149: Copying/Deleting A Condensation Custom

    9-5-4. Copying/deleting a condensation custom (1) Copying a condensation custom ① Displaying the condensation custom pattern list screen 1) Display the "condensation custom pattern list screen" referring to "9-5-2. Creating a new condensation custom" p. 140. ❶ of the copy source to put it in 2) Press the selected state.

  • Page 150: Simple Lock Of The Screen

    9-6. Simple lock of the screen Once the simple lock is enabled, operation of the buttons displayed on the screen is disabled, thereby pre- venting maloperation. ❶ ❶ held Simple lock is activated by keeping pressed for one second on the sewing screen. Pictograph display ❶...

  • Page 151: Adjustment Of Brightness Of The Led Panel

    9-8. Adjustment of brightness of the LED panel Screen brightness of the LED panel can be changed. ❶ ❶ held pressed for three second. The "mode screen" is displayed. 2) Select the "11. Panel setting". The "operation panel setting screen" is dis- played.

  • Page 152: Information

    Model-specific sewing data format of the sewing pattern shape, (XXX:001~999) number of stitches, etc. created on the sewing machine. Custom pitch data VD00XXX.VDT The data format that can be operated in common between JUKI (XXX:001~999) sewing machines. Condensation custom data VD00XXX.VDT...
  • Page 153 (1) Communication method ① Selecting the data format used for communication 1) Select "1. Data communication" on the "infor- mation screen". The "data communication list screen" is dis- played. <Information screen> 2) Select the transmitting/receiving data format and press the selected data format button. For example, select "1.
  • Page 154 ③ Setting the data number and starting communication 1) Press data number button ❹ . The "data number input screen" is displayed. ❹ <Data transmission/receipt preparation screen> 2) Enter the source/destination data number with numeric keypad ❺ and ❻ . ❼...

  • Page 155: Usb

    Never forcefully insert a USB thumb drive into the USB connector while carefully checking the orientation of the USB thumb drive. Forceful insertion of the USB thumb drive can cause failure. • JUKI does not compensate for loss of data stored on the USB device caused by using it with this sewing ma- chine. •...

  • Page 156: Nfc

    (such as tablet and smartphone) on which JUKI application for Android "JUKI Smart App" has been installed, by means of the NFC communication function. Refer to the Instruction Manual for JUKI Smart App for details of JUKI application for Android "JUKI Smart App".

  • Page 157: Key Customization

    9-10. Key customization It is possible to register a desired function to a key to customize the peel key arrays. Functions that can be assigned to panel keys are as described below. The key to which no function is assigned is displayed in blank. 9-10-1.

  • Page 158: How To Assign A Function To A Key

    9-10-2. How to assign a function to a key ① Displaying the key customization mode list screen ❶ ❶ held pressed for three second. The "mode screen" is displayed. 2) Select the "12. Key customization setting". The "key customization mode list screen" is displayed.
  • Page 159 ③ Selecting a function to be assigned ❷ ❶ ❸ The key customization selection screen is dis- played by pressing one of the ❷ to  ( ❷ to ❼ for the operator mode. ❷ to ❾ for the cycle mode.) ❹...

  • Page 160: Maintenance Management Function

    9-11. Maintenance management function When the set value for the counter is reached, this function gives a warning on the screen. As many as five different set values can be registered for warning. ❶ ❶ held pressed for three second. The "mode screen"...
  • Page 161 5) Select the setting condition of the warning counter. : Number of stitches (Unit: 1000 stitches) : Operating time (Unit: Hours) : Energizing time (Unit: Hours) : Number of times of thread trimming ❻ <Warning counter type selection screen> (Unit: Number of times) ❻...
  • Page 162 13) When ❺ on the "warning counter setting screen" is pressed, the "keyboard" is dis- played. 14) Enter a name of the warning counter.  is pressed, the operation is 15) When confirmed. Then, the screen returns to the "warning counter setting screen".  is pressed, the operation is 16) When confirmed.
  • Page 163 20) When the preset number of counts for the counter is reached, the warning screen is displayed. 21) Clear the number of counts by pressing * If (disable) is selected in item number  will not be displayed. 10), 22) If the number of counts of the counter is not cleared, the warning screen will be displayed again at the time of next count.

  • Page 164: Setting The Ancillary Devices

    9-12. Setting the ancillary devices Setting the ON/OFF status of function of ancillary devices. ❶ ❶ held pressed for three second. The "mode screen" is displayed. 2) Select "14. Incidental device setting". 3) The "ancillary device setting screen" is dis- played.

  • Page 165: Setting The On/Off Status Of Suspended Ruler

    9-12-1. Setting the ON/OFF status of suspended ruler 1) When "2. Suspended ruler" is selected, the "suspended ruler setting screen" is dis- played. 2) When "H002 Function ON/OFF" is selected, the "suspended ruler function ON/OFF set- ting screen" is displayed. <Suspended ruler setting screen>...

  • Page 166: Setting The On/Off Status Of Bobbin-Thread Remaining Amount Detecting Device

    9-12-3. Setting the ON/OFF status of bobbin-thread remaining amount detecting device 1) When "4. Bobbin-thread remaining amount detecting device" is selected, the "bob- bin-thread remaining amount detecting device setting screen" is displayed. 2) When "H004 Function ON/OFF" is selected, the "bobbin-thread remaining amount de- tecting function ON/OFF setting screen"...
  • Page 167 5) In the case the cover sensor function is placed in ON, it is necessary to set the ON/ OFF status of the respective cover sensors. When the cover sensor of which is to be set is selected, the cover-sensor ON/OFF setting screen for the selected cover is displayed.

  • Page 168: Sewing Speed Table

    10. SEWING SPEED TABLE Operate the sewing machine at a speed equal to or lower than the maximum sewing speed selected from those shown in the table below according to the sewing conditions. Speed setting is automatically carried out according to the stitch length and alternating vertical movement amount.

  • Page 169: Troubles In Sewing And Corrective Measures

    11. TROUBLES IN SEWING AND CORRECTIVE MEASURES Troubles Causes Corrective measures ① Thread path, needle point, hook blade ○ Remove the sharp edges or burrs on the 1. Thread breakage (Thread frays or is point or bobbin case resting groove on blade point of hook using a fine emery paper.
  • Page 170 Troubles Causes Corrective measures ① Thread tension given by the tension ○ Decrease the thread tension given by the 4. Thread slips off the needle eyelet controller No. 1 is too high. tension controller No. 1. ② Thread take-up spring stroke is too large. ○...
  • Page 171 Troubles Causes Corrective measures ① The feed amount of the top feed is ○ Decrease the feed dog height and reduce 10. When a heave-weight material is sewn, the inadequate. the feed amount of the bottom feed. (Refer material warps. to the Engineer's Manual for the adjustment procedure.) ①...

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