JUKI LH-4500C Series Instruction Manual
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JUKI LH-4500C Series Instruction Manual

JUKI LH-4500C Series Instruction Manual

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LH-4500C Series / SC-956
INSTRUCTION MANUAL

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  • Page 1 LH-4500C Series / SC-956 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. Drawing of table ........................2 2-2. Cautions when setting up the sewing machine .............3 2-3.
  • Page 3 3-5. Winding the bobbin thread ....................23 3-6. Installing the attachment ...................... 25 4. ADJUSTING THE SEWING MACHINE ..............26 4-1. Thread tension .........................26 4-1-1. Adjusting the tension of thread tension controller No. 1 ........... 26 4-1-2. Adjusting the needle thread tension (Active tension) ............26 4-1-3.
  • Page 4 5-3-3. How to set the counter ...................... 72 5-3-4. How to reset the count-completion state ................75 5-4. Simplified chart of panel displays .................76 5-5. List of memory switch data ....................77 5-6. List of errors ........................83 5-7. Memory switch data ......................87 6.
  • Page 5 9. HOW TO USE THE OPERATION PANEL (APPLICATION) ........129 9-1. Management of sewing patterns ..................129 9-1-1. Creation of a new pattern ....................129 9-1-2. Copying a pattern ......................131 9-1-3. Deleting a pattern ......................132 9-2. Setting up the polygonal-shape stitching ..............133 9-2-1.

  • Page 6: Specifications

    Motor AC servo motor Lubricating oil JUKI NEW DEFRIX OIL No. 1 or JUKI CORPORATION GENUINE OIL 7 Sewing pattern ......99 patterns For the polygonal shape sewing, as many as 10 patterns can be registered.) Number of patterns Cycle sewing pattern ....

  • Page 7: Installation

    2. INSTALLATION 2-1. Drawing of table – 2 –...

  • Page 8: Cautions When Setting Up The Sewing Machine

    2-2. Cautions when setting up the sewing machine Thank you very much for the purchase of JUKI Industrial Sewing Machine this time. Make sure of items 2-1 through 2-16 before operating to use this sewing machine with ease. [How to carry the sewing machine] Carry the sewing machine while holding the ma- chine arm with two persons as shown in the figure.

  • Page 9: Installation Of The Sewing Machine

    2-3. Installation of the sewing machine Attaching the hinge seats and the support ❺ ❺ ❸ rubbers of the machine head ❸ ❼ Fix accessory hinge seat ❶ supplied with ❽ the unit on the table with wood screw ❼ ❶...
  • Page 10 Installing the oil bottle Put oil seal  over accessory oil remover  and secure them with screw  and nut  . At this time, placing a washer be- tween two packing washers  , at- tach them to the screw. Then, tighten screw  together with washer  , spring washer  and nut  as shown in the figure on the left.

  • Page 11: Installing The Thread Stand

    2-4. Installing the thread stand ❷ ❶ Assemble the thread stand, set it up on the ma- chine table using the installation hole in the table and tighten nut ❶ gently. When you use power supplied by the overhead power line, pass the power supply cord through hollow spool rest rod ❷...

  • Page 12: Installing The Electrical Box

    2-5-2. Installing the electrical box Install electrical box ❶ to the table by fixing four ❷ ❷ accessory bolts ❷ , which are supplied with the electrical box, in holes a in the table. ❶ 2-6. Installing the pedal sensor Secure pedal sensor ❶...

  • Page 13: Installing The Reactor Box (Only For The Eu Type Models)

    2-7. Installing the reactor box (Only for the EU type models) Attach the terminals of power cord ❶ coming from the electrical box to reactor box PCB ❸ ❷ ❹ asm. ❷ and reactor box mounting plate ❸ . Connect brown wire A to the first connector and blue wire B to the third connector respec- tively from the top of terminal block on the reactor box PCB asm.

  • Page 14: Connecting The Power Source Cord

    2-8-2. 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 15: Connecting The Cords

    2-10. Connecting the cords DANGER : 1. To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing ma- chine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or more. 2.

  • Page 16: Handling The Cords

    2-11. Handling the cords DANGER : 1. To prevent personal injuries caused by electric shock hazards or abrupt start of the sewing ma- chine, carry out the work after turning OFF the power switch and a lapse of 5 minutes or more. 2.

  • Page 17: Attaching The Connecting Rod

    2-12. Attaching the connecting rod 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 a lapse of 5 minutes or more. Fix connecting rod ❶...

  • Page 18: Pedal Operation

    2-14. Pedal operation The machine runs at low sewing speed when you lightly depress the front part of the pedal. B The machine runs at high sewing speed when you further depress the front part of the pedal. A (If the automatic reverse feed stitching has been preset, the machine runs at high speed after it completes reverse feed stitching.) The machine stops (with its needle up or...

  • Page 19: Lubrication

    2. For the oil for hook lubrication, purchase JUKI NEW DEFRIX OIL No. 1 (Part No. : MD- FRX1600C0) or JUKI MACHINE OIL #7 (Part No. : MML007600CA).

  • Page 20: How To Use The Operation Panel (Basic Explanation)

    2-16. How to use the operation panel (Basic explanation) 2-16-1. 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 language, the language selection screen will be displayed every time you turn ON the power to the sew- ing machine.
  • Page 21 ③ Retrieval of the origin ❻ Press ❻ to bring the origin retrieval needle bar to its upper position. <Origin retrieval screen> ④ Setting the clock ❸ ❸ . Press The "mode screen" is displayed. Select the "8. Clock setting". The "clock setting screen"...

  • Page 22: Names And Functions Of The Panel Keys

    2-16-2. Names and functions of the panel keys Changeover between the operator mode and the maintenance personnel mode is carried out by ❶ and ❷ simultaneously. pressing <Operator mode> <Maintenance personnel mode> ❺ ❸ ❽ ❼  ❾ ❹ ❶ ❺...
  • Page 23 Switch/display Description Customization button 1 A selected function can be allocated to and registered with this button. Initially, the sewing counter has been factory-allocate and -registered. Customization buttons 2 - 7 A selected function can be allocated to and registered with this but- ton.

  • Page 24: Basic Operation

    2-16-3. Basic operation ① Turning ON the power switch When you turn ON the power switch, the welcome screen is displayed. ② Selecting a sewing pattern The sewing screen is displayed. ・ Select a sewing pattern. "5-2. Sewing patterns" p.41 Refer to for details.

  • Page 25: 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 26: Installing The Bobbin

    3-3. Installing 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. [In the case of LH-4588C-7] LH-4588C-7 Set a bobbin to the bobbin case so that the bobbin turns in the direction of arrow mark A.

  • Page 27: Threading The Machine Head

    3-4. 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. Fig.

  • Page 28: Winding The Bobbin Thread

    3-5. Winding the bobbin thread ❻ ❸ ❼ ❶ ❻ ❺ ❷ ❹ ❻ Insert the bobbin deep into the bobbin winder spindle ❶ until it will go no further. Pass the bobbin thread pulled out from the spool rested on the right side of the thread stand following the order as shown in the figure on the left.
  • Page 29 [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 30: Installing The Attachment

    3-6. Installing the attachment Be careful that screw A does not protrude in the rear of the bed slide when fixing the attachment to the bed slide with the screw. When it protrudes as shown in the figure, the screw interferes with other components and break-down will be caused.

  • Page 31: 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 top of needle after thread trimming. Turn the nut coun- ❶...

  • Page 32: Adjusting The Bobbin Thread Tension

    4-1-3. Adjusting the bobbin thread tension 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 bobbin thread tension is increased by turning bobbin thread tension screw ❶...

  • Page 33: Adjusting The Thread Take-Up Spring And The Thread Take-Up Stroke

    4-2. Adjusting the thread take-up spring and the thread take-up stroke 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. [When you want to change the stroke of the thread take-up spring] Loosen screw ❷...

  • Page 34: Presser Foot (Active Presser Device)

    4-3. Presser foot (Active presser 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. If the power to the sewing machine is turned ON while the material, etc.

  • Page 35: Changing The Initial Value Of The Presser Foot Pressure

    4-3-3. Changing the initial value of the presser foot pressure If you want to change the initial value of the presser foot pressure, the initial pressure can be changed by changing the installation position of presser bar position bracket (upper) ❶ . Where necessary, adjust the initial value of the presser foot pressure according to the sewing process.

  • Page 36: 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 material used.

  • Page 37: Led Hand Light

    4-6. 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.

  • Page 38: Reverse Feed Stitching

    4-7. Reverse feed stitching ① ❶ [One-touch type reverse feed stitching [Reverse feed stitching by means of the re- mechanism] verse feed lever] The one-touch type reverse feed switch ① is Length of the seam sewn by feeding the material pressed, the machine performs reverse feed in the normal or reverse direction of feed can be controlled by operating reverse feed lever ❶...
  • Page 39 ❶ ❶ held pressed for three Keep second. The "mode screen" is displayed. Select the "13. Hand switch setting". 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...

  • Page 40: Adjusting The Amount Of Oil (Oil Splashes) In The Hook

    [Description of operations of the custom switch] Function item Function item i00 Without option input function i51 Reverse-feed correction stitch i01 Needle up / down correction stitch i52 Presser foot lifting function i02 Thread trimming function i53 Function for cancelling reverse feed stitching at the beginning of sewing i03 1-stitch correction stitch i54 Function for prohibiting depress on the front part of...

  • Page 41: How To Confirm The Amount Of Oil (Oil Splashes)

    4-9-2. How to confirm the amount of oil (oil splashes) Amount of oil (oil splashes) confirmation paper Approx. 70mm * Use any paper available regardless of the material. * In the case of measuring the oil quantity in the hook, measure it under the "Bobbin winding mode".

  • Page 42: How To Use The Operation Panel

    5. HOW TO USE THE OPERATION PANEL 5-1. 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. There are two different screen display modes;...
  • Page 43 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. The mode is changed over between the operator mode and maintenance personnel mode by pressing the Mode key and the Information key simulta- neously.
  • Page 44 Switch/display Description ❺ Sewing-start re- This switch is used for changing the ON/OFF status of the reverse feed verse-feed stitch stitching at the beginning of sewing. When reverse feed stitching at the button beginning of sewing is placed in the OFF state, mark is displayed at the upper left of the button.
  • Page 45 Switch/display Description Customization button A selected function can be allocated to and registered with this button. This button has been initially set to the "Stitch length". Refer to"5-2-6. List of pattern functions" p.55. ※ Customization button A selected function can be allocated to and registered with this button. This button has been initially set to the "Presser foot pressure".

  • Page 46: Sewing Patterns

    5-2. 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. 5-2-1.

  • Page 47: List Of Sewing Patterns

    5-2-2. 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 Press each mode. The sewing pattern number list screen is displayed.
  • Page 48 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 49: Reverse Feed Stitching (At Start) Pattern

    5-2-3. 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 pat- tern can be operated when the sewing-start reverse feed stitching function is placed in the ON state...
  • Page 50 ♦In the case of maintenance personnel mode ① Selecting the type of reverse feed stitching at the beginning of sewing Display the sewing-start reverse-feed stitching edit screen Refer to the case of the operator mode. ❶ to display the reverse Press feed stitching type input screen.
  • Page 51 ・ In the case of selecting condensation stitch ❸ ❾ The stitch length, etc. can be set with ❽ . Change the number of condensation stitch- ❾ . es with The value you have entered is confirmed by  . Then, the sewing screen pressing is displayed.
  • Page 52 ③ Editing the data on reverse feed stitching at the beginning of sewing  is pressed on the sew- 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 53 ・ Inputting the correction value for reverse-feed stitch length (B) B is pressed, the re- When verse-feed stitch length correction value input screen is displayed. Input a correction value with numeric keypad  .  is pressed, the value When you have input is confirmed and the screen returns to the "sewing-start re- verse feed stitching data edit screen".
  • Page 54 ・ Setting the needle thread tension function (E) E is pressed, the needle thread tension function selection screen is displayed. Select the status (enable/disable) of the needle thread tension function with button  .  is pressed, the value you have input is confirmed and the screen returns to the "sewing-start reverse <Needle thread tension function selection screen>...

  • Page 55: Reverse Feed Stitching (At End) Pattern

    5-2-4. 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 pat- tern can be operated when the sewing-end reverse feed stitching function is placed in the ON state(...

  • Page 56: Editing The Sewing Patterns

    5-2-5. Editing the sewing patterns (1) Edit method (in the case free stitching, constant-dimension sewing or multi-layer stitch- ing is selected) "9-2. Setting up the polygonal-shape * In the case polygonal-shape stitching is selected, Refer to stitching" p.133. ① Displaying the sewing data edit screen ❶...
  • Page 57 In the case a constant-dimension sew- ing pattern is selected, the number of stitches input screen is displayed by ❸ at the time of setting pressing the number of stitches. (Only in the case the number of stitches can be changed) ❸...
  • Page 58 (2) Sewing adjustment mode Sewing performance can be checked using the sewing conditions you have changed before finaliz- ing the sewing conditions. ❶ on the sewing screen Press under the maintenance personnel mode. The "sewing data edit screen" is dis- played.
  • Page 59 (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 Press under the maintenance personnel mode. The "sewing data edit screen" is dis- played.

  • Page 60: List Of Pattern Functions

    5-2-6. List of pattern functions (1) Setting items under the pattern sewing mode Data Unit of Item name Input range change S001 Shape Constant dimen- Free Multi-layered Polygonal shape sion S002 Number of stitches 1stitch ― 1 to 15 ― 1 to 2000 S003 Stitch length...
  • Page 61 Data Unit of Item name Input range change S018 Presser foot pressure at the begin- -20 to 200 / -20 to 200 / ning of sewing Common setting ― Common setting S007 S209 S019 Reverse feed stitching speed at 10sti/min 150 to 2000 the beginning of sewing S020...
  • Page 62 Data Unit of Item name Input range change S040 Needle thread tension at the end of sewing; common setting : OFF : OFF ― : ON : ON S041 Needle thread tension, left at the 0 to 200 ― 0 to 200 end of sewing S042 Needle thread tension, right at the...
  • Page 63 Data Unit of Item name Input range change S061 Reverse-feed stitch length correc- 0.1mm -4.0 to 4.0(LH-4578C-0B) tion value -7.0 to 7.0(LH-4578C-7, LH-4588C-7) S062 Sewing speed limit 10sti/min 150 to U096 ― ― S063 Needle bar: Lower stop position 1deg 100 to 300 ―...
  • Page 64 Data Unit of Item name Input range change S080 Type of angle patterns : No setting : Single angle : Pocket sewing ― ― : 3 continuous angles : 4 continuous angles : 5 continuous angles S081 Angle 1 1deg 30 to 175 ―...
  • Page 65 Data Unit of Item name Input range change S107 Needle thread tension at the time 0 to 200 / Common setting S004 ― ― of one-touch type changeover (left) S108 Needle thread tension at the time of one-touch type changeover 0 to 200 / Common setting S005 ―...
  • Page 66 (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 One-touch Multi-layered Separate- stitches switch part ly-driven nee- dle bar sensor S203 Sensor value to change over the step ―...
  • Page 67 Unit of Data No. Item name Input range change S216 Lifting height of presser foot when 0.1mm 0.0 to 20.0 the sewing machine stops S217 One shot : OFF : ON S219 Sewing speed 10sti/min 150 to 3000 S220 Automatic return of both needles : OFF : ON under the step feed mode...

  • Page 68: Teaching Function

    5-2-7. 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 "polygo- nal-shape stitching"...
  • Page 69 (2) How to set (polygonal-shape stitching) ① Turning ON the teaching function ❷ to turn ON the teaching Press function. ② Starting teaching The input value is set to 0 (zero). Carry out sewing until the needle entry posi- tion at which you want to finish sewing ❸...

  • Page 70: One-Touch Utility Changeover Function

    5-2-8. One-touch utility changeover function In the case the one-touch changeover function is assigned to the custom switch, the stitch length, sew- ing speed, etc. can be changed over by pressing the custom switch. The one-touch function has been factory-allocated to the machine head switch 1 at the time of shipment.

  • Page 71: Registration Of A New Sewing Pattern

    5-2-9. 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 Press pattern management screen". ❷ . Press ❷...
  • Page 72 ② Confirming the data on the created sewing pattern ❸ ❸ to display the sewing Press pattern No. registration. Enter the pattern number to be regis- tered using the numeric keypad. ❹ to confirm the pattern Press number you have entered. The "sewing pattern management screen"...

  • Page 73: Copying A Pattern

    5-2-10. Copying a pattern ❶ ❶ to display the "sewing Press pattern management screen". ❷ . Press ❷ <Sewing pattern management screen> Input a copy pattern number with the numeric keypad. ❸ to confirm the pattern Press number you have entered. The "sewing pattern management screen"...

  • Page 74: Narrow-Down Function

    5-2-11. 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 function can be used both under the operator mode and maintenance personnel mode. ①...
  • Page 75 ② Select the target pattern to be narrowed down ❸ ❼ Select sewing patterns from which a desired pattern is narrowed down using ❸ . button 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 but- ❹...

  • Page 76: Counter Function

    5-3. Counter function This function counts sewing in the predetermined unit and gives a visible alarm on the screen when the preset value is reached. 5-3-1. Displaying the sewing screen under the counter display mode Four different types of counters are avail- able;...

  • Page 77: How To Set The Counter

    5-3-3. How to set the counter ① Selecting the counter setting ❶ Display the mode screen by pressing ❶ . Select the "4. 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 78 Select the desired type of counter. ❷ to confirm the type of Press counter you have selected. ❷ <Counter type screen> Select the current counter value. Enter with the numeric keypad. ❷ to confirm the type of Press counter you have selected. ❷...
  • Page 79 Bobbin thread counter (left) ・ (right) 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-comple- tion 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 80: How To Reset The Count-Completion State

    ③ Confirming the data entered ❻ Confirm the counter content. Then, press ❹ (or ❺ if ❹ is not displayed) to return the screen to the mode screen. ❻ is pressed on When close button the mode screen, the screen returns to the sewing screen.

  • Page 81: Simplified Chart Of Panel Displays

    5-4. Simplified chart of panel displays – 76 –...

  • Page 82: List Of Memory Switch Data

    5-5. 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 U013 Bobbin thread count stop function 0 to 2...
  • Page 83 Item Setting range Unit U037 Speed during soft start 100 to 3500 sti/min The number of revolutions set with this memory switch is given precedence even if it is lower than the lowest speed by pedal. The initial value varies with the machine head. (0:OFF) One needle: 170 sti/min Two needles: 200 sti/min U038 Speed during one-shot stitching...
  • Page 84 Item Setting range Unit U058 Needle bar home position retaining function 0 to 3 The retaining function retains the needle bar at upper or lower stop position. The initial value varies with the machine head. 0: Disabled / 1: Enabled; Weak retaining force / 2: Enabled; Medium retaining force / 3: Enabled;...
  • Page 85 Item Setting range Unit U120 Main shaft reference angle correction -60 to 60 Degree The main shaft reference signal angle (0 degree) is corrected with the value set using this memory switch. U121 Upper position angle correction -15 to 15 Degree The position at which the sewing machine stops with its needle up is corrected.
  • Page 86 Item Setting range Unit 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. 0: Start switch is given priority / 1: Start switch is not given priority U201 Bobbin thread remaining amount at the start of thread tension correction.
  • Page 87 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 pan- el is not operated for a certain period of time. 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 displayed or comment is displayed on the sewing screen.

  • Page 88: List Of Errors

    5-6. List of errors Error Description of error Cause Item to be checked code ・ The existing control box has been E000 Execution of data initial- This is not a failure. ization (This is not an removed and a new one is mount- error.) ・...
  • Page 89 Error Description of error Cause Item to be checked code ・ Buffer for storing ISS data will soon ・ Output the ISS data. E205 ISS buffer capacity runout warning be filled to its capacity. If the buffer is used continuously, the stored data will be automatical- ly erased on FIFO basis.
  • Page 90 Error Description of error Cause Item to be checked code ・ In the case the motor signal is not ・ Check whether the motor signal connector E731 Motor hole sensor fault input properly. has loosened or slipped off. ・ Check whether the motor signal cord has broken by being caught under the machine head.
  • Page 91 Error Description of error Cause Item to be checked code ・ Main motor shaft failure. ・ Check whether the main shaft motor has E955 Electric current sensor ・ Electric current sensor failure. error short-circuited. ・ In the case the pitch motor fails to ・...

  • Page 92: Memory Switch Data

    5-7. Memory switch data The memory switch data is the sewing machine operation data which commonly affects all sewing pat- terns and cycle patterns. ① Selecting the category of the memory switch data ❶ ❶ on the sewing screen to Press display the "mode screen".
  • Page 93 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 Enter a set value with numeric keypad ❸ and ❹ . ❺...

  • Page 94: Major New Functions

    6. MAJOR NEW FUNCTIONS 6-1. Corner stitching function To use the corner stitching function, it is only necessary to input the stitch length and the angle of the corner portion of material. Then, the sewing machine automatically calculates the single needle stitch- ing condition to be met for sewing the corner portion (stitch length and the number of stitches), sews the corner portion with the specified number of stitches using the single needle, stops sewing, lifts the presser foot and resets the automatic single needle stitching mode.
  • Page 95 ❼ on the sewing screen. Press The "2nd sewing screen" is displayed. ❼ <Sewing screen> ❽ . Press The "Angle pattern type selection screen" is displayed. <Second sewing screen> ❽ Select angle pattern ❾ .  , the opera- When you press tion you have carried out is confirmed and the screen returns to the "2nd sew- ing screen".
  • Page 96 10) Enter an angle  by pressing (Input the value in increments of 5 °)  , the value When you press you have entered is reset to the initial value. <Angle parameter input screen> 11) When you input degree of angle  , the single-needle sewing condition to be satisfied to enable sewing of the entered angle (number of stitches ...
  • Page 97 ② Performing the corner stitching A sewing pattern is indicated in the example in the aforementioned figure. A 2-needle sewing ↓ B After the sewing machine has stopped, move 70° separately-driven needle bar changeover lever H to the L position. ↓...

  • Page 98: Correcting The Needle Thread Tension According To The Remaining Amount Of Thread Wound On The Bobbin

    6-2. Correcting the needle thread tension according to the remaining amount of thread wound on the bobbin The needle thread tension can be corrected according to the bobbin thread remaining amount. The needle thread tension can also be set on the operation panel. The needle thread tension data is stored in memory.
  • Page 99 Set "U201 Bobbin thread remaining amount for starting correction" with nu- meric keypad  . Using the aforementioned set value, de- termine the remaining amount of bobbin thread indicated on the bobbin counter for starting the needle thread correction. "5-3. Counter function" Refer to p.71 for how to set the bobbin count-...

  • Page 100: Tension Correction (With Respect To Sewing Speed)

    6-3. Tension correction (with respect to sewing speed) The needle thread tension can be corrected according to the sewing speed. The needle thread tension can also be set on the operation panel. The needle thread tension data is stored in memory. ❶...
  • Page 101    ❾ The values of needle thread tensions  , stitch (right and left)  and presser foot length  can be increased / pressure decreased with Needle thread tension (left, right)  set in the aforementioned procedure is used for setting the correction chart.

  • Page 102: Correcting The Presser Foot Pressure According To The Sewing Speed

    6-4. Correcting the presser foot pressure according to the sewing speed The presser foot pressure can be corrected according to the sewing speed. The needle thread tension can also be set on the operation panel. The needle thread tension data is stored in memory.
  • Page 103     ❾ The set value of presser foot pressure  can be increased / de- creased with Presser foot pressure  set in this step of procedure is used for setting a correction chart. This presser foot pressure is not reflect- ed to the presser foot presser that can be set as sewing pattern data.

  • Page 104: Care

    7. CARE Perform the maintenance below every day for longer use of your machine. 7-1. Cleaning 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. Detach needle ❶...
  • Page 105 Tilt the machine head. Detach pipe holder  . Draw out lubricating tube  from oil tank  . Remove dust from around oil filter  . Oil remaining in the oil tank may leak after drawing out the lubricating tube. While leaving the machine head tilted, dis- charge the oil remaining in the oil pan into oil bottle  .

  • Page 106: Applying Grease

    3. Be aware that grease can leak from the thread take-up cover and needle bar if the amount of grease is excessive. 4. Be sure to use JUKI GREASE A TUBE ❶ (part number : 40006323). 7-2-1. Applying grease to the needle bar and thread take-up lever Remove the face plate.
  • Page 107 LH-4588C Thread take-up lever (oil wick) Felt Needle bar Square block Needle bar bracket Face plate lubrication felt Remove the rubber cap, take out the felt in Common A, pour new grease in the hole, and put the felt to which grease has been soaked after removing old grease adhered to the inside of the hole and the felt.

  • Page 108: Applying Grease To The Presser Bar Bushing

    7-2-2. Applying grease to the presser bar bushing Remove presser bar bushing lubrica- tion screw ❷ with a hexagon wrench. Detach the cap of exclusive grease ❶ . Put its tip into the oil hole to add exclu- sive grease ❶ . At this time, add the grease until it over- flows.

  • Page 109: Disposal Of Batteries

    7-4. Disposal of batteries The operation panel has a built-in battery in order to operate the clock even when the power is turned OFF. Be sure to dispose of the battery following the local laws and reg- ulations. [How to remove the battery] Remove panel ❶...

  • Page 110: 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 111 ❷ The sewing machine is changed over to the "hook timing adjustment mode". The presser foot goes up. In this state, the needle bar position can be adjusted by turning the main shaft by hand. The current position of needle bar is displayed at section A.

  • Page 112: 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 ・ Adjust the relation between the LH-4578C needle and the hook as described below: Place the sewing machine in the hook timing adjustment mode. Set the feed pitch to 2.50 for the F type model or to 3.00 for the G type model.
  • Page 113 ・ Adjust the relation between the needle LH-4588C and the hook as described below: ❼ Place the sewing machine in the hook timing ❺ adjustment mode. Set the feed pitch to 3.00 for the G type mod- ❻ Standard adjustment is obtained when the needle bar goes up 2.2 mm from its lowest point (at this time, the lower marker line on the needle bar is aligned with the lower end...
  • Page 114 Hook driving shaft Common setting collar Hook driving shaft D The hook driving shaft setting collar is aligned with the end face of hook ❾ driving shaft D ❽ Left hook Hook driving shaft setting collar Hook driving shaft C The hook driving shaft setting collar is aligned with the end face of hook driving shaft C...

  • Page 115: Adjusting The Hook Needle Guard

    8-3. Adjusting the hook needle guard After you have changed the hook, check the posi- tion of the needle guard. ❶ In the standard position, hook needle guard ❷ comes in contact with the side face of needle ❶ and as a result, the needle warps by 0.03 to 0.1 ❷...

  • Page 116: Adjusting The Position Of Counter Knife, Knife Pressure And Clamp Pressure

    8-5. Adjusting the position of counter knife, knife pressure and clamp pressure 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. [Adjustment of the position of the counter ❷...
  • Page 117 [Adjustment of the knife pressure] Loosen screws  . Adjust the knife pressure by moving counter knife arm  up or down. After the thread is changed to an- other thread of different count, the clamp spring pressure may need to be re-adjusted in some cases.

  • Page 118: Adjusting The Thread Trimming Cam Timing

    8-6. Adjusting the thread trimming cam timing 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 119: Adjusting The Thread Clamp Device (* Excluding The F Type Model)

    8-7. Adjusting the thread clamp device (* excluding the F type model) As same as the conventional wiper device, the thread clamp device is able to roll in the needle thread on the wrong side of material. [Features] So-called "bird's nest phenomenon" which occurs on the wrong side of material can be reduced by using thread clamp device ①...
  • Page 120 ❸ or ❹ . Press ❹ will be placed in ON.) ❺ to confirm the setting. Press The "sewing data edit screen" is dis- played. ❸ ❹ ❺ <Thread clamp setting screen> [Adjusting the remaining length of needle thread] Adjust the length of thread remaining at the nee- dle by turning thread tension control nut No.
  • Page 121 [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 122: Adjusting The Height And Inclination Of The Feed Dog

    8-8. Adjusting the height and inclination of the feed dog Adjusting the height of the feed dog Loosen setscrew ❶ of the feed driving arm. Adjust the feed dog height by turning feed driving arm ❷ . The standard height of the feed dog is 1.1 ❶...

  • Page 123: Replacing The Gauge

    8-9. Replacing the gauge ・ Moving the hook driving shaft base when ❷ ❸ changing the gauge ❶ Remove slide plate asm (side) ❶ and cap ❷ . Loosen hook driving shaft base setscrew ❸ . Loosen setscrews ❹ of the lower shaft set collar.

  • Page 124: Stop Of The Needle Bar And The Turning Angle Of Corner Stitching (Lh-4588C-7)

    8-11. Stop of the needle bar and the turning angle of corner stitching (LH-4588C-7) ・ Stopping the needle bar When conversion lever ❶ is moved to L position, the left needle bar stops. When it is moved to R position, the right needle bar stops. ・...

  • Page 125: Active-Presser Multi-Layered Section Detection Function (* Excluding The F Type Model)

    8-12. Active-presser multi-layered section detection function (* excluding the F type model) 8-12-1. Multi-layered section detection function The multi-layered portion detection function detects a multi-layered portion of material. With this func- tion, the sewing machine automatically changes over the sewing parameter to the one for sewing multi-layered portion of material and performs sewing.
  • Page 126 ❹ ❸ Select enable/disable of the multi-lay- ered part detection by pressing ❸ . ❹ to confirm the setting. Then, the sewing data edit screen is displayed. Set the "threshold" for ON/OFF of the multi-layered section detection. For the purpose of the multi-layered section detection function, the word ❺...
  • Page 127 Place the multi-layered section of material under the presser foot, and press  . ❾ <Multi-layered section changeover function ON sensor value teaching screen> The value of ❾ is automatically calculated, and that value becomes the "threshold" for the multi-layered section detection. The value is adjustable with according to the sewing item.
  • Page 128 ❶ ❺ 3. Setting the sewing parameters to be used when a multi-layered portion of material is detected ❶ . Press The "Multi-layered portion run-on set- ting list screen" is displayed. <Multi-layered portion sewing parameter list screen> Setting the sewing parameters to be used when the sewing machine running on a multi-layered portion of material.
  • Page 129 ❺ . Press The "Multi-layered portion (top) setting list screen" is displayed. Taking the similar steps of procedure as 3), set the sewing parameters for perform sewing on the top of multi-lay- ered portion. <Multi-layered portion (top) setting list screen> : Stitch length : Presser foot pressure : Sewing speed...

  • Page 130: Setting The Multi-Layered Portion Changeover Timing According To The Number Of Stitches

    8-12-2. Setting the multi-layered portion changeover timing according to the number of stitches 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 131 Similarly, set the number of stitch- ❹ es to be sewn before carrying out ❸ on the changeover by pressing "Multi-layered portion (top) setting list screen". Factory-set value at the time of delivery : 0 (Number of stitches is not set) Setting range : 0 to 200 ❸...

  • Page 132: Grease Shortage Alarm

    8-13. Grease shortage alarm 8-13-1. 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 error is reset by pressing this state, the sewing machine can be con- ❶...

  • Page 133: Regarding K118 Error Resetting Procedure

    ❶ 8-13-3. Regarding K118 error resetting procedure ❶ held pressed for three Keep seconds. The "mode screen" is displayed. <Sewing screen> Select the "1. Memory switch". The "memory switch type selection screen" is displayed. <Mode screen> Select the "1. Display all". The "memory switch edit screen"...

  • Page 134: 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 135 ③ Setting the pattern function ❼ ❻ Set the pattern function using buttons ❺ . Refer to "5-2. Sewing patterns" p.41 ❼ . Press The "sewing pattern number registration screen" is displayed. ❻ to display the data dis- Press card confirmation screen. ❺...

  • Page 136: 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 speci- fied 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 137: 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 138: Setting Up The Polygonal-Shape Stitching

    9-2. Setting up the polygonal-shape stitching <Example of pattern> A polygonal-shape stitching pattern consists of Step5 as many as 30 steps of straight stitching. Sewing condition can be separately set for each step. This operation is to be carried out under Step1 Step4 the maintenance personnel mode.
  • Page 139 ② Editing the number of stitches of polygonal shape stitching and the step changeover condition to be satisfied by a new step Step changeover condition is displayed in ❷ . Press ❷ to place the number of stitches in the selected state. The screen returns to the previous one or advances to the next one with ❸...
  • Page 140 Setting other sewing data ❽ . The type of sewing data displayed on the "sewing data edit screen" changes according to the step changeover ref- erence selected in the aforementioned item number 3. (See the table shown below.) ❾  The presser lifter operates after ❽...
  • Page 141 Step changeover reference Number of stitch- Multi-layered part Separately-driven Hand switch detection needle bar sensor Stop - Presser foot ○ ○ ○ ○ lifting Stop - Presser foot ○ ○ ○ ○ lifting height One shot ○ ○ ○ ○ Sewing speed limit ○...
  • Page 142 Or, in the case the step changeover basis is the detection of a multi-layered portion of material, the multi-layered portion detection sensor value B is entered to the step changeover sensor value C by pressing  . <Teaching input screen (In the case the step changeover basis is the detection of a multi-layered portion of material)>...
  • Page 143 When displayed step  is pressed, the "step changeover reference selection screen" is displayed. Select the step changeover reference in the same manner as aforementioned item number 3.  is pressed, the oper- 10) When ation is confirmed. Then, the screen returns to the "polygonal shape stitch- <Step changeover reference selection screen>...

  • Page 144: Creating A New Polygonal-Shape Stitching Pattern

     is pressed, the selected 14) When step is deleted. In the case only one step has been reg-  is not displayed. istered, ③ Confirming the data on the created sewing pattern The operation is completed by pressing  .Then, the current screen returns to the sewing screen under the maintenance personnel mode.

  • Page 145: Setting The Step From Which Polygonal-Shape Stitching Is Started

    ③ Setting the pattern function on a step-by-step basis ❹ ❺ ❻ Set the pattern function with buttons ❸ on a step-by-step basis. Refer to "5-2. Sewing patterns" p.41 The total number of steps you have set is displayed on the right of section A. The current step is displayed on the left of section A.

  • Page 146: How To Carry Out The Corner Stitching Using A Polygonal-Shape Stitching Pattern

    9-2-4. How to carry out the corner stitching using a polygonal-shape stitching pattern If a polygonal-shape stitching pattern is used, the angular stitching can be carried out by setting the number of stitches and the stitch length as desired. In the case of carrying out the corner stitching at the angular portion as illustrated in the figure, set 70°...

  • Page 147: Cycle Pattern

    9-3. Cycle pattern It is possible to combine several different sew- ・・・ ing patterns as one cycle pattern for sewing. Pattern Pattern Patterns 1 to As many as 10 patterns can be input in one cy- 10 can be reg- cle pattern.

  • Page 148: 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 Press Step key screen. The "cycle sewing step edit screen" is dis- played. ❶ <Sewing screen (Cycle pattern)> Sewing pattern numbers (10 numbers at the maximum) which have registered ②...

  • Page 149: 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 Press under the maintenance personnel mode. The "Sewing pattern number manage- ment screen (in numerical order)"...
  • Page 150 Press Pattern No. ❹ you want to cre- ate. ❺ is pressed, the opera- When tion is confirmed. Then, the screen re- turns to the "new cycle sewing pattern edit screen". ❹ ❺ <Registered cycle pattern selection screen (In numerical order)> ❼...

  • Page 151: 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 arbi- trary step of the cycle sewing pattern.

  • Page 152: Custom Patterns

    9-4. Custom patterns It is possible to register 20 patterns consisting of groups Step1 of two or more different stitches as custom patterns. 1mm 3 stitches Each group can contain 10 steps at the maximum. As many as 100 stitches of the same stitch length can Step2 be set in one step.
  • Page 153 ❷ ❷ . Press The "stitch length input screen" is dis- played. <Sewing data edit screen> ❸ If there are registered custom patterns ❸ will be displayed. ❸ is pressed, the "Cus- When tom pattern setting screen" is dis- played. <Stitch length input screen>...

  • Page 154: Creating A New Custom Pattern

    9-4-2. Creating a new custom pattern A new custom pitch pattern creation procedure is described as follows using < Figure: Example of the custom pitch > as an example. ① Selecting the "custom pattern setting" on the mode screen ❶ ❶...
  • Page 155 ④ Creating a custom pattern When ❻ is pressed, the pressed step is in the selected state. Selected custom pattern number is displayed in A, and the step number that is being edited and the number of all steps are displayed in B. The "number of stitches"...
  • Page 156 ⑤ Confirming the numeric value After the completion of editing, press <Custom pattern edit screen> Custom pattern value is edited following the steps of procedure described below. <Custom pattern list screen> – 151 –...

  • Page 157: Editing The Custom Pattern

    9-4-3. Editing the custom pattern ① Selecting the custom pattern edit function Display the "Custom pattern list screen" Refer to "9-4-2. Creating a new custom pattern"p.149. <Custom pattern edit screen> ② Editing the custom pattern value Editing the custom pattern value. "9-4-2.

  • Page 158: Copying And Deleting The Custom Pattern

    9-4-4. Copying and deleting the custom pattern (1) Copying the custom pattern ① Displaying the custom pattern list screen Display the "Custom pattern list screen" Refer to "9-4-2. Creating a new custom pattern"p.149. ❶ of the copy source to Press put it in the selected state.
  • Page 159 (2) Deleting a custom pattern Display the "Custom pattern list screen" Refer to "9-4-2. Creating a new custom pattern"p.149. ❶ to put the custom pitch Press to be deleted in the selected state. ❶ ❷ <Custom pattern list screen> ❷ . Press If the custom pattern can be deleted, the "Deletion confirmation screen"...

  • Page 160: Condensation Custom Pattern

    9-5. Condensation custom pattern Condensation stitches can be sewn while specifying needle entry points as desired, by setting a conden- Step 1 sation custom. As many as 20 steps can be created 1 mm 3 stitches in one pattern. The maximum number of patterns that can be registered is nine.
  • Page 161 ② Selecting the new condensation custom creating function Registered condensation custom pat- terns 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 Enter the pattern number with numeric keypad ❸...
  • Page 162 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. ❾...

  • Page 163: Condensation Custom Edit Function

    9-5-3. Condensation custom edit function ① Selecting the condensation custom edit function Display the "Condensation custom pattern list screen" Refer to "9-5-2. Creating a new condensation custom"p.155. <Condensation custom edit screen> ② Editing the condensation custom value In this section, procedure for editing the condensation custom value is described. "9-5-2.

  • Page 164: 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 Display the "condensation custom pattern list screen" Refer to "9-5- 2. Creating a new condensation custom"p.155. ❶ of the copy source to Press put it in the selected state.

  • Page 165: 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 preventing maloperation. ❶ ❶ Simple lock is activated by keeping held pressed for one second on the sewing screen.

  • Page 166: 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 Keep second. The "mode screen" is displayed. Select the "11. Panel setting". The "operation panel setting screen" is displayed.

  • Page 167: Information

    Custom pattern data VD00×××.VDT The data format that can be operated in common between (×××:001 to 999) JUKI sewing machines. Condensation custom data VD00XXX.VDT The data format that can be operated in common between (×××:001 to 999) JUKI sewing machines.
  • Page 168 (1) Communication method ① Selecting the data format used for communication Select "1. Data communication" on the "information screen". The "data communication list screen" is displayed. <Information screen> Select the transmitting/receiving data format and press the selected data format button. For example, select "1.
  • Page 169 ③ Setting the data number and starting communication Press data number button ❹ . The "data number input screen" is dis- played. ❹ <Data transmission/receipt preparation screen> Enter the source/destination data number with numeric keypad ❺ and ❻ . ❼ to confirm the setting. Press The "data transmission/receipt prepara- tion screen"...

  • Page 170: 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 machine.

  • Page 171: 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 172: 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 173: 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 Keep second. The "mode screen" is displayed. Select the "12. Key customization set- ting". The "key customization mode list screen"...
  • Page 174 ③ Selecting a function to be assigned ❶ ❷ ❸ When one of the buttons ❷ to ❽ ( ❷ to ❻ for the operator mode or cycle mode), the "Key customization selection screen" is dis- played. ❹ ❺ ❻ <Key customization assignment screen (Operator mode)>...

  • Page 175: 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 Keep second.
  • Page 176 Select the setting condition of the warn- ing counter. : Number of stitches (Unit: 1000 stitches) : Operating time (Unit: Hours) : Energizing time (Unit: Hours) ❻ : Number of times of thread trim- <Warning counter type selection screen> ming (Unit: Number of times) ❻...
  • Page 177 10) When ❹ on the "warning counter setting screen" is pressed, the "warn- ing counter clearing setting screen" is displayed. 11) Select enable/disable of the warning counter clearing displayed on the warn- ing screen. : Disable (Current-value clear ❾ key is not displayed on the <Warning counter clearing setting screen>...
  • Page 178 17) The warning counter selected with a checkmark  in is enabled. 18) When the relevant "C" button in  is pressed, the number of counts dis- played in the corresponding counter field can be cleared.  is pressed, the oper- 19) When ation is confirmed.

  • Page 179: Quick Reference Chart According To Stitch Pitch Gauge (Conversion Table Of "1 Pitch/Mm")

    10. QUICK REFERENCE CHART ACCORDING TO STITCH PITCH GAUGE (CONVERSION TABLE OF "1 PITCH/MM") 1/8" (3.17 mm) 5/32" (3.96 mm) Number of Number of stitches stitches Angle Angle 3/16" (4.76 mm) 7/32" (5.56 mm) Number of Number of stitches stitches Angle Angle 1/4"...

  • Page 180: Gauge Parts List

    11. GAUGE PARTS LIST 22. TABLE OF EXCHANGING GAUGE PARTS (LH-4578C TYPE F) 交換ゲージ部品一覧表（ＬＨ －４５７８ Ｃ　Ｆ 仕様） [LH-4578C F type] - 43 - – 175 –...
  • Page 181 23. TABLE OF EXCHANGING GAUGE PARTS (LH-4578C-7) [LH-4578C-7] 交換ゲージ部品一覧表（ＬＨ －４５７８ Ｃ －７） – 176 –...
  • Page 182 24. TABLE OF EXCHANGING GAUGE PARTS (LH-4588C-7) [LH-4588C-7] 交換ゲージ部品一覧表（ＬＨ －４５８８ Ｃ －７） – 177 – - 47 -...

  • Page 183: Causes And Corrective Measures For Phenomena In Sewing

    12. CAUSES AND CORRECTIVE MEASURES FOR PHENOMENA IN SEWING Phenomenon Cause Corrective measures ① Thread path, needle point, hook blade ◦ Remove the sharp edges or burrs on the blade 1. Thread break- point or bobbin case resting groove point of hook using a fine emery paper. Buff up the on the throat plate has sharp edges or (Thread frays or bobbin case resting groove on the throat plate.
  • Page 184 Phenomenon Cause Corrective measures ① Clearance between the needle and the ◦ Refer to 2. Stitch skipping "8-1. Needle-to-hook relation" p.105. hook blade point is too great. ② Timing between the needle and the ◦ Refer to "8-1. Needle-to-hook relation" p.105.
  • Page 185 Phenomenon Cause Corrective measures ① The position of the moving knife is not ◦ Refer to 4. Thread trim- "8-5. Adjusting the position of counter correct. ming failure knife, knife pressure and clamp pressure 8-5. Adjusting the position of counter knife, knife pressure and clamp pressure"...

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