JUKI DDL-9000C-S Series Engineer's Manual
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JUKI DDL-9000C-S Series Engineer's Manual

Direct-drive, high-speed, sewing system with automatic thread trimmer
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See also: Instruction Manual
Direct-drive, High-speed, Sewing system
with Automatic Thread Trimmer
DDL-9000C Series
(DDL-9000C-F, S Series)
ENGINEER'S MANUAL
40177390
No. E424-00

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Summary of Contents for JUKI DDL-9000C-S Series

  • Page 1 Direct-drive, High-speed, Sewing system with Automatic Thread Trimmer DDL-9000C Series (DDL-9000C-F, S Series) ENGINEER’S MANUAL 40177390 No. E424-00...
  • Page 2 PREFACE This Engineer’s Manual is written for the technical personnel who are responsible for the service and mainte- nance of the machine. The Instruction Manual for these machines intended for the maintenance personnel and operators at an apparel factory contains operating instruction in detail. And this manual describes “Standard Adjustment”, “Adjustment Procedures”, “Results of Improper Adjustment”, and other important information which are not covered in the Instruction Manual.
  • Page 3 TO ENSURE SAFE USE OF YOUR SEWING MACHINE Adjustment : It means replacement of parts, disassembly, and repair assembly. For the sewing machine, automatic machine and ancillary devices (hereinafter collectively referred to as "machine"), it is inevitable to conduct sewing work near moving parts of the machine. This means that there is always a possibility of unintentionally coming in contact with the moving parts.
  • Page 4 JUKI assumes no responsibility for damages or personal injury or death resulting from the use of the machine for any application other than the intended one.
  • Page 5 1. Be sure to use JUKI genuine table and table stand in order to prevent accident that can result in personal injury or death. If it is inevitable to use a table and table stand which are not JUKI genuine ones, select the table and table stand which are able to support the machine weight and reaction force during operation.
  • Page 6 7. If the machine cannot be normally operated after repair or adjustment, immediately stop operation and contact JUKI or the distributor in your area for repair in order to prevent accident that can result in per- sonal injury or death.
  • Page 7 5. Be sure to use JUKI genuine parts when replacing any of the machine parts. JUKI assumes no responsibility for any accident caused by any part other than JUKI genuine one. In addition, in the event you cannot replace parts within the specified range, immediately stop the re- placement work and ask JUKI or distributor in your area for replacement of the parts.

  • Page 8: Electrical Components

    Replacement of parts 1. In prevention of accident caused by unfamiliarity with the machine or electrical-shock accident, be sure to ask an electrical technician of your company or JUKI or distributor in your area for replacement of electrical components. 2. When it is necessary to open the control box containing electrical parts, be sure to turn the power off and wait for five minutes or more before opening the cover in order to prevent accident caused by un- familiarity with the machine or electrical-shock accident.
  • Page 9 2. In prevention of accident caused by unfamiliarity with the machine or electrical-shock accident, be sure to ask an electrical technician of your company or JUKI or distributor in your area for disassembly/as- sembly of electrical components. 3. When it is necessary to open the control box containing electrical parts, be sure to turn the power off and wait for five minutes or more before opening the cover in order to prevent accident caused by unfa- miliarity with the machine or electrical-shock accident.
  • Page 10 PRECAUTIONS TO BE TAKEN SO AS TO USE THE DDL-9000C SERIES MORE SAFELY 1. To avoid personal injury, never put your fingers under the needle when you turn ON the power switch or operate the sewing machine. 2. To avoid personal injury, never put your fingers into the thread take-up cover while the sew- ing machine is in operation.

  • Page 11: Caution Before Operation

    11. For the purpose of protecting the operation panel, do not wipe it with a cloth dampened with thinner or the like which contains volatile constituent, wet cloth or hard cloth. 12. Never lower the needle bar when the picker is brought close to the bobbin. The picker may be damaged by the needle, causing a stitching failure.
  • Page 12 SAFETY DEVICES AND WARNING LABELS Warning label against pinching This is the caution label to protect fingers, etc. from Pulley cover being caught between the This is a cover for thread take-up lever and preventing entangle- the thread take-up lever ment of hands, hair cover.

  • Page 13: Table Of Contents

    CONTENTS 1. Specifications .................... 1 2. Name of each component ................. 2 3. Standard adjustment ................. 4 (1) Feed dog height and gradient .................. 4 (2) Adjusting the needle and the hook ................6 (3) Operating timing of the feed ..................8 1）DDL-9000C-F type ...........................8 2）DDL-9000C-S type ..........................9 (4) Bobbin insertion ......................
  • Page 14 2) Clearance of the hand wheel ......................72 3) Adjustment of the bobbin winder unit ..................74 4 ． Control panel ..................76 (1) Names and functions of the panel keys ..............76 1) DDL-9000C-S ..........................76 2) DDL-9000C-F ..........................77 (2) To use the functions of the serviceperson level ..........78 1) DDL-9000C-S ..........................78 2) DDL-9000C-F ..........................79 (3) External interface ....................
  • Page 15 3) PWR board assembly /PWR -CE board assembly ..............124 4) CTL board assembly /CTL -D board assembly .................125 5) INT board assembly ........................126 (3) Optional input-output connector ................. 127 1) How to set an optional input-output function（DDL-9000C-S） ..........127 2) How to set an optional input-output function（DDL-9000C-F） ..........130 3) Position where an optional input-output connector is placed ..........131 7.

  • Page 17: Specifications

    *1：Stitch length 0.00 ～ 4.00：5,000sti/min, stitch length 4.05 ～ 5.00：4,000sti/min *2：Stitch length 0.00 ～ 4.00：4,500sti/min, stitch length 4.05 ～ 5.00：4,000sti/min *3：JUKI New Defrix Oil No. 1 or JUKI Machine Oil 7 (equivalent to ISO VG7) *4：It's adjusted by a panel...

  • Page 18: Name Of Each Component

    2. Name of each component ❹ ❾ ❷ ❸ ❽ ❼ ❶ ❻ ❺ ❶ Power switch  Reverse feed lever ❷ Operation Panel  Minute adjustable presser lifting screw ❸ Pulley cover (only for DDL-9000C-S) ❹ Thread stand  Hand wheel ❺...
  • Page 19 ❶ Power switch This switch turns on and off the power to the head unit motor, electric components, and operation panel. ❷ Operation panel It allows you to adjust the automatic reverse feed stitching speed and a head sewing speed and set a feed pitch and so on.

  • Page 20: Standard Adjustment

    3. Standard adjustment (1) Feed dog height and gradient WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment ② ❶ ❷...
  • Page 21 Adjustment Procedure Results of Improper Adjustment 1. Set the panel setting value at 0. ◦ If the gradient of the feed dog is 2. After adjustments, firmly tighten the screws that have been loos- adjusted for either shaft only, the ened.

  • Page 22: Adjusting The Needle And The Hook

    (2) Adjusting the needle and the hook WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment ❶ 0.04 to 0.1mm ❹...
  • Page 23 Adjustment Procedure Results of Improper Adjustment 1. Turn the flywheel until the needle bar ❷ comes to its lowest position, and loosen the needle bar connecting setscrew ❶. 2. Determine the needle bar height. Adjust the engraved marker line (marker line A for the DB needle and marker line B for the DA needle) of the needle bar ❷...

  • Page 24: Operating Timing Of The Feed

    (3) Operating timing of the feed (Caution) When you have changed the stitch length, feed dog height or feed timing, run the sew- ing machine at a low speed to make sure that the gauge does not interfere with the changed part.

  • Page 25: 2）Ddl-9000C-S Type

    2）DDL-9000C-S type Timing between the needle and feed can be adjusted on the operation panel. [How to adjust] Display the sewing data edit screen by ❺. pressing ❺ ❶ ❷ ❻ Display "S049" by pressing ❶. Change the feed timing by pressing ❷.

  • Page 26: Bobbin Insertion

    (4) Bobbin insertion WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 1) Bobbin case with idling prevention spring (Drawing is for 40000264.) Change the height.
  • Page 27 Adjustment Procedure Results of Improper Adjustment Hold the bobbin so that it turns to the right and insert it in the ◦ If the direction of clockwise bobbin case. (See Drawing.) winding is adopted, variation is Pass the thread through the threading port A of the bobbin lessened possibly caused by a case.

  • Page 28: Adjustment Of Inner Hook Presser Position

    (5) Adjustment of inner hook presser position WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment ❷ Inner hook ❶ ❶...
  • Page 29 Adjustment Procedure Results of Improper Adjustment 1. The front and rear positions of the inner hook presser ❶ can be ◦ If the embossed part of the inner adjusted by means of the setscrew ❷. hook presser ❶ has any flaw, this can be a cause of thread break- [Standard adjusting value] age or uneven sewing.

  • Page 30: Lubrication

    (6) Lubrication WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 1) Method of lubrication H type (Micro-quantity lubrication) ❶ ❻...
  • Page 31 Adjustment Procedure Results of Improper Adjustment 1) Method of lubrication 1. H type (Specification for minute-quantity lubrication) Minute-quantity lubrication by the oil wick ❶ Face plate needle bar lubrication : Hook ❷ Forced lubrication by the plunger pump ❸ Quantity of oil can be adjusted by the hook oil adjusting screw ❹...

  • Page 32: Method Of Lubrication To The Oil Tank

    (6) Lubrication WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 2) Method of lubrication to the oil tank ❶ ❷...
  • Page 33 Fill the oil tank with oil for hook lubrication before operating the sewing machine. Remove oil hole cap ❶ and fill the oil tank with JUKI NEW DE- FRIX OIL No.1 (part number : MDFRX1600C0) or JUKI COR- PORATION GENUINE OIL 7 (part number : 40102087) using the oiler supplied with the machine.

  • Page 34: Cleaning Of The Oil Filter

    (6) Lubrication WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 4) Cleaning of the oil filter ❶ ❷ – 18 –...
  • Page 35 Adjustment Procedure Results of Improper Adjustment 4) Cleaning of the oil filter Clean the oil filter ❶ periodically (approximately once every three ◦ If there is clogging in the oil filter ❶, smooth lubrication cannot be months). maintained from the lubrication Let the sewing machine fall down.

  • Page 36: Adjusting The Amount Of Oil In The Hook

    (6) Lubrication WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 5) Adjusting the amount of oil in the hook 6) Hook oil adjustment procedures 7) Essentials for hook oil adjustments 8) Replacement of the hook shaft oil wick...
  • Page 37 Adjustment Procedure Results of Improper Adjustment 5) Adjusting the amount of oil in the hook Tighten (turn clockwise) oil amount adjustment screw ❶ to increase the amount of oil in the hook, or loosen (turn counterclockwise) to decrease it. (Caution) ◦...

  • Page 38: Various Origin Adjustments

    (7) Various origin adjustments WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 1) Z-phase adjustment of a main motor Turn a handwheel one revolution, align one marker line with the other marker line, and press the...
  • Page 39 Adjustment Procedure 1) Z-phase adjustment of a main motor * When you implement an origin adjustment of various motors, be sure to start with adjustment of a main motor (Z-phase adjustment). It is because the phase of various motors is decided by the angle of the main motor. For adjustment of various motors, refer to the Section "11 Check program."...
  • Page 40 (7) Various origin adjustments WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 1) Z-phase adjustment of a main motor Turn a handwheel one revolution, align one marker line with the other marker line, and press the...
  • Page 41 Adjustment Procedure 1)-2. DDL-9000C-F 1. Turn on the sewing machine while pressing the ❶. ❶ Press the check program key to display the check program selection screen. 2. Press the Z-phase adjustment key to display the Z-phase adjustment screen. 3. Turn a flywheel one revolution, align one marker line with the other marker line, and press the ❸...

  • Page 42: Adjustment Of The Origin Of A Presser Lifter Motor

    (7) Various origin adjustments WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 2) Adjustment of the origin of a presser lifter motor Light-contact state ❾...
  • Page 43 Adjustment Procedure 2) Adjustment of the origin of a presser lifter motor 2)-1. DDL-9000C-S ❶ 1. Just like the 1. of 1)-1, open the check program list screen. ❶ to select the "03 2. After pressing the ❺ to Presser motor adjustment," press the ❺...

  • Page 44: Pitch Motor Adjustment

    (7) Various origin adjustments WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 3) Pitch motor adjustment Horizontal feed pulse motor Figure 1 Conceptual drawing of the origin of a horizontal...
  • Page 45 Adjustment Procedure 3) Pitch motor adjustment * The pitch motor adjustment is helpful to adjust the origin of a horizontal motor that controls the horizon- tal feed motion. 3)-1. DDL-9000C-S 1. Just like the 1. of 1)-1, open the check program list screen.

  • Page 46: Vertical Feed Motor Adjustment

    (7) Various origin adjustments WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 4) Vertical feed motor adjustment (Caution) Make the hole on Round bar of φ...
  • Page 47 Adjustment Procedure 4) Vertical feed motor adjustment * The vertical feed motor adjustment is helpful to adjust the origin of the vertical feed motor adjustment that controls the vertical feed motion. 4)-1. DDL-9000C-S 1. Just like the 1. of 1)-1, open the check program ❶...

  • Page 48: Vertical Feed Link Adjustment

    (7) Various origin adjustments WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 5) Vertical feed link adjustment Upper and lower link arm setscrew Feed dog Upper and lower link arm...
  • Page 49 Adjustment Procedure 5) Vertical feed link adjustment * The vertical feed link adjustment is helpful to adjust the height of a feed dog at a maximum by produc- ing the biggest possible fluctuations in the vertical feed motor. * Assemble a feed dog in a state of no presser pressure. * The feed locus motion considering the presser pressure is seen in the actual sewing process.

  • Page 50: Adjustment Of Forward Reverse Stitches (Correction Function)

    (7) Various origin adjustments WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 6) Adjustment of forward reverse stitches (correction function) After adjustments described from the above 1) through 5) are completed, check a numerical scale dis- played on the operation panel and an actual needle-entry.
  • Page 51 Adjustment Procedure 6)-2. DDL-9000F-S ❾ on the sewing screen to display Press the mode screen. 2. After selection of the "01 Memory switch", and selection of the "1. Display All". 3. After selection of the "K330 Forword stitching pitch correction" and "K331 Reverse stitching pitch correction"...

  • Page 52: Adjustment Of Active Tension (Only The Ddl-9000C-F)

    (7) Various origin adjustments WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 7) Adjustment of active tension (only the DDL-9000C-F) ❸...
  • Page 53 Adjustment Procedure Results of Improper Adjustment 7) Adjustment of active tension (only the DDL-9000C-F) 1. Assembly Assemble the active tension in the following way. 1). Sub assembly Attach the screw (M4) ❸ to the plunger ❷ of the AT solenoid ❶. At this time, keep 19 ±...
  • Page 54 (7) Various origin adjustments WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 7) Adjustment of active tension (only the DDL-9000C-F) (Cautions) Be sure to take a measure to prevent variation between the sewing machines.
  • Page 55 Adjustment Procedure 2. Correction for tension 1). Confirmation of the current state 1. Check the tension of the span #60 at the time of setting the numerical vale on the panel to 60. * The Gunze span #60 is used for thread. * Let the thread take-up spring and the thread guide through.

  • Page 56: Adjusting The Needle Thread Presser Device

    (8) Adjusting the needle thread presser device WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 1) Needle thread presser device ❷...
  • Page 57 Adjustment Procedure Results of Improper Adjustment 1) Adjusting the needle thread presser device ◦ In the case the memory switch The needle thread presser device is able to tuck the needle thread "U056 Reverse-rotation needle-up on the wrong side of material as in the case of the conventional wiper after thread trimming"...

  • Page 58: Adjusting The Remaining Length Of Needle Thread

    (8) Adjusting the needle thread presser device WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 2) Adjusting the remaining length of needle thread ❷...
  • Page 59 Adjustment Procedure 2) Adjusting the remaining length of needle thread] Adjust the length of needle thread remaining at the needle to 35 to 45 mm (for both the S and H types) by turning thread tension No. 1 nut ②. 1) Turn thread tension No.

  • Page 60: Response To Problems Occurring At The Beginning Of Sewing

    (8) Adjusting the needle thread presser device WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 4) Response to problems occurring at the beginning of sewing ❹...
  • Page 61 Adjustment Procedure Results of Improper Adjustment ◦ The AK-154 device ❹ is exclusive 4) Response to problems occurring at the beginning of for the DDL-9000C-S. sewing • In the case needle thread breakage occurs when using a thin thread or fragile thread •...
  • Page 62 (8) Adjusting the needle thread presser device WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 4) Response to problems occurring at the beginning of sewing –...
  • Page 63 Adjustment Procedure 4)-1. DDL-9000C-S ❶on the sewing screen to display the 1. Press mode screen. ❶ 2. Select the "1. Memory switch". The "memory switch type selection screen" is dis- played. Select the "1. Display all". 2. Select the "U290 Wiper AK operating time". Input the lifting time.

  • Page 64: Response To Problems Occurring At The Beginning Of Sewing

    (8) Adjusting the needle thread presser device WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 5) Response to problems occurring at the beginning of sewing Condensation Custom condensation (CC) Condensation...
  • Page 65 Adjustment Procedure Results of Improper Adjustment 5) Response to problems occurring at the beginning of ◦ So-called "bird's nest phenomenon" is reduced by increasing the pitch sewing of the first stitch at the beginning of (Caution) With respect to the memory switch settings, a sewing sewing.
  • Page 66 (8) Adjusting the needle thread presser device WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 5) Response to problems occurring at the beginning of sewing Condensation Custom condensation (CC) Condensation...
  • Page 67 Adjustment Procedure Results of Improper Adjustment 5) Response to problems occurring at the beginning of sewing 5)-2. DDL-9000C-F [Setting the number of condensation stitches] ❶ 1. Select "U280 Number of end condensation stitches for shorter- thread remaining thread trimming" from "1. Display all". 2.

  • Page 68: Adjusting The Thread Trimming Unit

    (9) Adjusting the thread trimming unit WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 1) Adjustment of the thread trimming cam position ❺...
  • Page 69 (Caution) After adjustment, make confirmation according to [3.-(9)-3) Standard timing for the thread trimming cam]. 4. Apply exclusive grease (JUKI grease A) to the stopper spring part ❺. 2) Adjustment of the thread trimming link stopper screw 1. Turn the hand wheel and adjust the thread trimming roller ❺ to the inlet section ...

  • Page 70: Adjustment Of The Thread Trimming Cam Position

    (9) Adjusting the thread trimming unit WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 3) Adjustment of the thread trimming cam position B′...
  • Page 71 Adjustment Procedure Results of Improper Adjustment 3) Adjustment of the thread trimming cam position ◦ In the case of using a high-count 1. For checking of the thread trimming cam timing filament thread, thread loop forma- The purpose of the adjustment of the thread trimming cam is to align marker line A on pulley cover ❺...

  • Page 72: Adjusting The Knife Unit

    (9) Adjusting the thread trimming unit WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 4) Adjusting the knife unit 1.
  • Page 73 Adjustment Procedure Results of Improper Adjustment 4) Adjusting the knife unit 1. For checking the knife unit 1. Check to make sure that the power switch is in the OFF state. ◦ Be aware that, if the distance be- tween loop spreading knife ❶ and Remove the gauge (presser foot, throat plate and feed dog) from center of needle A is reduced, around the needle.

  • Page 74: Adjusting The Knife Unit

    (9) Adjusting the thread trimming unit WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 4) Adjusting the knife unit Adjustment of the knife unit ❺...

  • Page 75: Adjusting The Knife Unit

    Adjustment Procedure Results of Improper Adjustment 4) Adjusting the knife unit Adjustment of the knife unit 1. Check to make sure that the power switch is in the OFF state. Remove the gauge (presser foot, throat plate and feed dog) from around the needle.

  • Page 76: Adjustment Of Rise Of The Second Thread Tension Disc

    (9) Adjusting the thread trimming unit WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 6) Adjustment of rise of the second thread tension disc 0.5 to 1mm ❹...
  • Page 77 Adjustment Procedure Results of Improper Adjustment 1. How to check the amount of rise of the second thread tension disc (1) Set the thread take-up lever slightly in front of the upper dead point. (2) Raise the presser. (3) The standard amount of the rise of the second thread ten- sion disc ❹...

  • Page 78: Adjustment Of The Picker

    (9) Adjusting the thread trimming unit WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 7) Adjustment of the picker ❻...
  • Page 79 Adjustment Procedure Results of Improper Adjustment The picker device is used in order to stabilize idling of the bobbin at the time of thread trimming. (Caution) When it is necessary to check how the picker ❻ is adjusted, install the bobbin case and bobbin ❺ in the hook first, then check the picker.

  • Page 80: Adjustment Of The Driven Part Stopper

    (9) Adjusting the thread trimming unit WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 8) Adjustment of the driven part stopper ❸...
  • Page 81 Adjustment Procedure Results of Improper Adjustment The driven part stopper ❷ is a safety device so that interference is prevented between the needle and the moving knife even though the roller comes off the thread trimming cam when any unexpected problem (such as a service interruption) occurs.

  • Page 82: Adjustment Of The Driven Part Stopper

    (9) Adjusting the thread trimming unit WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 9) Adjustment of the driven part stopper ❶...
  • Page 83 Adjustment Procedure Results of Improper Adjustment 9) Adjustment of the driven part stopper [Method of replacement] 1. Let the sewing machine fall down. 2. Remove the needle, hook, and the inner hook presser. 3. Remove the moving knife link stepped screw ❹. * Apply the LOCKTITE 243 on a screw at the time of recombination.

  • Page 84: Protrusion Of The Thread Trimming Shaft And Stopper Position

    (9) Adjusting the thread trimming unit WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 11) Protrusion of the thread trimming shaft and stopper position 1 to 2mm ❾...
  • Page 85 Adjustment Procedure Results of Improper Adjustment 11)Protrusion of the thread trimming shaft and stop- per position ◦ If the amount of protrusion is too 1. When the thread trimmer solenoid is pulled, the amount of protru- small, the action sound of the sion is 1mm to 2mm between the tip ❾...

  • Page 86: Adjustment Of Thrust Values Of An Upper Shaft

    (10) Adjustment of thrust values of an upper shaft WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment ❶ ❷ –...
  • Page 87 Adjustment Procedure Results of Improper Adjustment 1. After everything has been installed for the upper shaft, remove rattles from bearings (pressurizing). (1) Assemble all parts for the upper shaft. (2) Loosen two setscrews ❶ of the upper sprocket. (3) Enter the tip of a tapered minus screwdriver into the coupling ❹ slot until it stops.

  • Page 88: Adjustment Of External Parts

    (11) Adjustment of external parts WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 1) Adjustment of the pulley cover ❸...
  • Page 89 Adjustment Procedure Results of Improper Adjustment 1) Adjustment of the pulley cover [Method of replacement] 1. Remove the hand wheel ❶. 2. Remove four pulley cover setscrews ❷. (Cautions)1. At the time of re-assembly, the pulley cover ❸ should be kept raised. 2.

  • Page 90: Adjustment Of The Bobbin Winder Unit

    (11) Adjustment of external parts WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 3) Adjustment of the bobbin winder unit ❻...
  • Page 91 Adjustment Procedure Results of Improper Adjustment In regard to adjustments of the bobbin winder amount and winder imbalance, refer to the relevant instruction manual. In this manual, descriptions are provided in regard to problems of winder shaft revolution errors. 1. Replacement of the bobbin friction wheel (1) Remove two bobbin winder unit setscrews ❶.

  • Page 92: Control Panel

    4 ． Control panel (1) Names and functions of the panel keys 1) DDL-9000C-S ❸ ❼ ❶ ❷ ❹ ❾ ❺ ❽ ❻ Switch/display Description ❶ Item selection key This key is used for changing over the screen display or for displaying the edit screen. Refer to the explanation of each screen for details.

  • Page 93: Ddl-9000C-F

    2) DDL-9000C-F ❸ ❹ ❶ ❷ Switch/display Description ❶ Mode key This switch is used for displaying the menu screen. ・The user level is displayed by operating this key in the normal manner. ・The serviceperson level 1 is displayed by keeping the key held pressed for three sec- onds.

  • Page 94: To Use The Functions Of The Serviceperson Level

    (2) To use the functions of the serviceperson level 1) DDL-9000C-S ❾ button on the sewing screen for three seconds to display a mode screen for the By pressing servisperson level 1 or for six seconds to display a mode screen for the servisperson level 2 respectively. The function that can be used differs depending on the levels as follows.

  • Page 95: Ddl-9000C-F

    2) DDL-9000C-F ❶on the sewing screen for three seconds to display a mode screen for the ser- By pressing visperson level 1 or for six seconds to display a mode screen for the servisperson level 2 respective- ❶ On the sewing screen for the switched level, press the again to display the mode screen and ❷...

  • Page 96: External Interface

    Never forcefully insert a USB thumb drive into the USB connector while carefully checking the orien- tation 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 97: Communication Function

    (4) Communication function Data can be input/output by means of a USB thumb drive. 1) How to use the communication function (DDL-9000C-S) ① Selecting the communication function ❶ ❾on the sewing screen to 1. Press display the mode screen. 2. Select "09 Communication" by press- ❶.

  • Page 98: How To Use The Communication Function (Ddl-9000F-F)

    2) How to use the communication function (DDL-9000F-F) It is possible to enter the input and output of data using a USB memory. Depending on the level on the information screen, transmitted and received data differs as follows. EPD Data transmission / reception It can be used at the CC Data transmission / reception operator level.
  • Page 99 2)-2. When communication data is other than program data ② Selecting the data format used for communication 1. Select the transmitting/receiving data format and press the selected data format button. For example, select "1. EPD data transmis- sion/receipt". The "data direction selection screen" is displayed.
  • Page 100 ❽ ❾ to 3.Confirm the numeric value with start communication. "During communication" screen is dis- played while the communication is being carried out. ❽. The cur- Cancel the operation with rent screen returns to the previous screen. * If the destination number you have entered has already been registered, ❾...

  • Page 101: List Of Communication Data Formats

    It is the data of needle entry point created with PM-1, and the data format that can be operat- (XXX:001~999) ed in common between JUKI sewing machines. VD00XXX.VDT Condensation custom data It is the data of needle entry point created with...

  • Page 102: Function Of Formatting The Usb Device

    When you save data to a USB memory, save it according to the following folder structure. When data is not being saved to the right folder, it is not possible to write data in a panel from a USB memory. ※[…]: Folder name Media DDL00 XXX .EPD...

  • Page 103: Ddl-9000C-F

    2) DDL-9000C-F ① Display the USB format confirmation screen. Press the "3.USB format" key on the information screen to display the USB format confirmation screen. ② Execute or cancel formatting of the USB device. ❾, the current By pressing the screen returns to the information screen after execution of formatting of the USB device.

  • Page 104: Check Program

    (6) Check program 1) Function of the check program（DDL-9000C-S） ① Display the selection screen of a check program. ❶ 1. When you hold down the ❾ for three seconds on the sewing screen, a mode screen for the ser- viceperson 1 level is displayed. 23頁と同じ...

  • Page 105: Use A Check Program Function.（Ddl-9000C-S

    2) Use a check program function.（DDL-9000C-S） ① No.01 Selection of a machine head (Caution) 1. Do not use this function. 2. When you use this function, data on a memory switch is initialized. Be careful about it. ❷ ①-1. Press the ❷...
  • Page 106 ⑦No. 08 Sensor check ❶ 1. Select a sensor to check. ❶, you When you press the can select a sensor to check. The sensors that can be selected are as follows: ❺ ❻ Name of sensor Display Status Name of sensor Display Status Main Shaft phase U...
  • Page 107 ⑧ No.09 Output check 1. Select an output to check. ❶ ❶, you When you press the can select an output to check. The outputs that can be selected are as follows: ❻ Output name Display Status Thread trimming solenoid Out put OFF Out put ON Thread presser...

  • Page 108: Function Of The Check Program（Ddl-9000C-F

    3) Function of the check program（DDL-9000C-F） ① Display the sewing screen for the serviceperson mode. ❶ ❶ for 1. When you hold down the three seconds on the sewing screen, a mode screen for the serviceperson 1 level is displayed. ②...

  • Page 109: Use A Check Program Function.（Ddl-9000C-F

    4) Use a check program function.（DDL-9000C-F） ① No.01 Selection of a machine head ❾ in the ma- When you press the chine head selection screen to select the model, it will be finalized model. ❾ Machine type Display DDL-9000C FMS For Standard materials (For general export) DDL-9000C FMH For heavy-weight materials(For general export)
  • Page 110 ⑧ No.08 Sensor check Press the sensor check key on the check program selection screen to display the sensor check screen. It is possible to check a sensor that checks a program on the sensor check screen. By pressing , the current screen returns to the check program selection screen.

  • Page 111: Initialization Of Data

    (7) Initialization of data It is possible to initialize selected data (reset to factory default.). 1）DDL-9000C-S ① Select the function of initializing data. ❶ ❾ for 1. When you hold down the six seconds on the sewing screen, a mode screen of the serviceperson level 2 is displayed.

  • Page 112: 2）Ddl-9000C-F

    2）DDL-9000C-F ① Select the function of initializing data. ❶ for six 1. When you hold down the seconds on the sewing screen, a mode screen of the designer level is displayed. 2. Press the "13 Data initialization" key to display the data initialization selection screen.

  • Page 113: Brightness Adjustment Of A Panel

    (8) Brightness adjustment of a panel It is possible to change the brightness of display of a liquid crystal panel. 1. "09 Press the panel settings" key on the mode screen to display the panel set- tings screen. ❷ to adjust the bright- 2.

  • Page 114: Key Customization

    (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 1) Assignable data ❺...

  • Page 115: How To Assign A Function To A Key

    2) How to assign a function to a key ① Displaying the key customization mode list screen ❶ ❶. 1. Press The "mode screen" is displayed.  and select the "10. Setting 2. Press the key customization". The "key customization mode list screen" is displayed.
  • Page 116 ② Selecting a function to be assigned ❷ ❶ ❸ The key customization selection screen is dis- played by pressing one of the ❷ to  (❼ for the operator mode, ❾ for the cycle mode) ❹ ❺ ❻ ❼ <Key customization assignment screen(Operator mode)>...

  • Page 117: Setting The Key-Lock And The Password

    (11) Setting the key-lock and the password Specific key operation can be prohibited to disable change in data by enabling the key-lock. Furthermore, change in the status of the key-lock between enable/disable can be prohibited by setting a four-digit pass- word.
  • Page 118 * In the case the password has been set up and the key-lock has been enabled, the password input screen is displayed when the mode key is pressed on the sewing screen. (Refer to the description given below for the operation procedure.) Once the correct password is input, input of the password is not required until the power is turned OFF.

  • Page 119: Data List

    5 ． Data list (1) List of pattern functions 1） Setting items under the pattern sewing mode Data No. Item name Input range S001 Shape Free Constant dimension Multi−layered Polygonal shape S002 Number of stitches/ ― 1 to 2000 1 to 15 ―...

  • Page 120: Setting Items For The Polygonal-Shape Stitching Steps

    Data No. Item name Input range S064 Presser −350 to 200 ※1 S065 Correction of feed dog −4 to 8 ― −4 to 8 ※1 height S066 Feed locus ― ※1 S068 Part number − 24 characters *2 S069 − 24 characters *2 Process S070 Comment...

  • Page 121: List Of Memory Switch Data

    (2)List of memory switch data 1) Level 1 It can be set when a mode screen for the operator level has been displayed. Initial value Item Setting range Unit FSH SMS CE SSH CS FMS CE FSH CE U001 Soft-start function 0 to 9 Stitch The initial value differs with the machine head.
  • Page 122 Initial value Item Setting range Unit FSH SMS CE SSH CS FMS CE FSH CE U035 Minimum speed of the pedal 150 to Max. sti/min The maximum number of revolutions during thread trimming of thread differs with the machine head. trimming U036 Speed during thread trimming...
  • Page 123 Initial value Item Setting range Unit FSH SMS CE SSH CS FMS CE FSH CE U052 Correction of turning-OFF of reverse feed stitching (at start) −50 to 50 Degree U053 Correction of turning-OFF of reverse feed stitching (at end) −50 to 50 Degree U055 Presser foot lift after thread trimming...
  • Page 124 Initial value Item Setting range Unit FSH SMS CE SSH CS FMS CE FSH CE U070 8.5 to 13.5 Presser-foot 2nd step lifting height Maximum height of presser foot at the 2nd step of its lifting operation when the back part of pedal is depressed. (When the back part of pedal is depressed until the thread trimming position is reached after the presser foot comes down after thread trimming) U087...
  • Page 125 Initial value Item Setting range Unit FSH SMS CE SSH CS FMS CE FSH CE U280 Number of condensation stitches at the end of sewing before 1 to 9 Stitch shorter-thread remaining type thread trimmer operates When the shorter-thread remaining function is placed in ON, this memory switch is used for setting the number of condensation stitches to be sewn before thread trimming.
  • Page 126 Initial value Item Setting range Unit FSH SMS CE SSH CS FMS CE FSH CE U294 Thread-presser initial suction time 4 to 10 U326 Feed dog travel to 0 position when lifting the presser foot 0 to 1 The feed dog height is set to 0 (zero) when lifting the presser foot.

  • Page 127: 2） Level 2

    2） Level 2 It can be set when a mode screen for the serviceperson level 1 or the serviceperson level 2 has been displayed. Initial value Item Setting range Unit SMS CE SSH CS FMS CE FSH CE K023 Presser device 0 to 1 0: Equipped/1: Non-equipped K024...
  • Page 128 Initial value Item Setting range Unit SMS CE SSH CS FMS CE FSH CE K103 Needle cooler output-off delay time 100 to 2000 Delay time from a stop until an output-off, using the needle cooler output function K105 BT Angle that ends prohibition of output operation 0 to 359 Degree The reverse-feed stitching output is prohibited below the...
  • Page 129 Initial value Item Setting range Unit SMS CE SSH CS FMS CE FSH CE The number of needles ignoring the sewing counter K184 0 to 99 Stitch switch When the number of sewing needles used at the time of the thread trimming is less than that of needles set in the sewing machine, the sewing counter switch is not accepted.

  • Page 130: Details Of A Memory Switch

    (3) Details of a memory switch ① Selection of the soft-start function（U001） The needle thread may fail to interlace with the bobbin thread at the start of sewing when the stitching pitch (stitch length) is small or a thick needle is used. To solve such problem, this function (called “soft- start”) is used to limit the sewing speed, thereby assuring successful formation of the starting stitches.
  • Page 131 ⑤ Adjustment of the pedal stroke（U039 to U044） No.43 No.47 No.41 No.42 No.39 No.40 No.44 (Neutral automatic presser lifting) Low speed Speed in compliance with depressing section amount of pedal Stroke Direction of depressing front part of Direction of depressing back pedal part of pedal No.42...
  • Page 132 7. Pedal stroke 1 for starting thread trimming (U047) 　By setting the U068 to the selection 1, can be adjust the stroke until the U069 (1st presser lifting height). Setting range : −1000 to −100 ⑥ Foot lift function after thread trimming (U055) This function can automatically lift the presser foot after thread trimming.
  • Page 133 ⑪ Function of reducing speed of reverse feed stitching at the start of sewing (U060) Function to reduce speed at the time of completion of reverse feed stitching at the start of sewing : Nor- mal use depending on the pedal condition (Speed is accelerated to the highest without a break.) This function is used when temporary stop is used properly.

  • Page 134: List Of Errors

    (4)List of errors Error Description of error Cause Item to be checked code E000 Execution of data • The existing control box has been This is not a failure. initialization (This is removed and a new one is mounted. not an error.) •...
  • Page 135 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 136 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 137 Error Description of error Cause Item to be checked code E965 Pitch motor • In the case the pitch motor is applied • Check whether the pitch motor runs temperature error with an excessive load. smoothly. E966 Feed driving motor •...

  • Page 138: Electrical Component And The Like

    6 ． Electrical component and the like （1）Construction of a control box and how to remove a board 1） Construction of a control box The control box consists of the following three kinds of board assemblies and the board incorporated into the electrical box varies depending on the specifications and places of destinations.

  • Page 139: Various Boards

    （2）Various boards 1） FLT-T board assembly Power filter board for the three-phase of 200-240V specification/single-phase 100-120V specification ❹ ❸ ❷ ❶ Names of connector and fuse Name of the destination to connect Remark ❶ Power switch Power input ❷ PWR board Power output ❸...

  • Page 140: Pwr Board Assembly /Pwr -Ce Board Assembly

    3) PWR board assembly /PWR -CE board assembly Generation of a power supply and board that drives a principal axis motor, a horizontal feed motor, and a vertical feed motor ❻ ❷ ❸ ❹ ❺ ❾ ❶ ❽ ❼ Names of connector Name of the destination to Remark and fuse...

  • Page 141: Ctl Board Assembly /Ctl -D Board Assembly

    4) CTL board assembly /CTL -D board assembly Board that controls a presser motor and a solenoid, and controls the whole sewing machine includ- ing memorization of a memory switch and the like ❻ ❼ ❺ ❹ ❸ ❷ ❾ ❽...

  • Page 142: Int Board Assembly

    5) INT board assembly Board that is attached to inside the head section of a sewing machine, which has a connector that relays various sensor signals and also a memory that memorizes data on the head section of a sewing machine ❼...

  • Page 143: Optional Input-Output Connector

    (3) Optional input-output connector When counters and the like are connected or as the destination to output the timing signal from the sewing machine, an external input-output connector is prepared for the SC-951/950. In addition, as for the functions of each connector pin, it is possible to change the already initialized functions or set a new function. (Caution) Engineers who have electric knowledge should work when it is used.
  • Page 144 List of input functions Abbreviation Function item Remark No function (Standard setting) Every time the switch is pressed, normal feed Needle up/down correction stitching stitching by half stitch is performed. Reverse feed stitching is performed at low speed Reverse-feed correction stitching while the switch is held pressing.
  • Page 145 ❶ ❷ 6. How to set an output function Description of a display screen and an output switch D: Output number E: Name of an output function F: Active level of output ❶： Switch the changes (D, E, and F). ❷：...

  • Page 146: How To Set An Optional Input-Output Function（Ddl-9000C-F

    2) How to set an optional input-output function（DDL-9000C-F） 1. Press the optional I/O setting key on the mode screen to display the option- al I/O settings screen. 2. Select the optional input setting/out- put setting on the optional I/O settings screen to display the optional input setting screen /output settings screen.

  • Page 147: Position Where An Optional Input-Output Connector Is Placed

    3) Position where an optional input-output connector is placed 1. Position of an optional input-output connector ❹ For connecting optional input-output connector solenoid (For only SC-950) (CN56:8P) ❸ For connecting ❶ For connecting ❷ For connecting sewing machine optional input-output optional input- for standing work connector solenoid...
  • Page 148 2. Description of an optional connector ❶ Optional output connector (CN61) It is used when you connect it to a solenoid valve ❶ and so on. For suitable connectors, refer to the following table. Suitable connectors Part number HK063610100 HK075230000 Name of products Housing（10p) Pin contact Name of...
  • Page 149 ❸ Connector for a sewing machine for standing work (for the PK70) When you connect the PK70 made by Juki, connect it to the CN39 of SC-951 (950) ❸. ❸ * Variable speed using the variable pedal * Thread trimming function using the pedal for a...
  • Page 150 It is used when you use the pedal for a sewing machine for standing work on the market (of a switch system).To connect it to the sewing machine, you are recommend to use the relay cord A assembly for a sewing machine for standing work, which is made by JUKI and supplied as an option. Approx. 1.5m Relay cord A asm.
  • Page 151 ❶ Optional output connector (CN56) It is used when you connect it to a solenoid valve and so on. For suitable connectors, refer to the ❹ following table. Suitable connectors Part number HK063610080 HK075230000 Name of products Housing（8p) Pin contact Name of J.S.T.

  • Page 152: Maintenance

    7. Maintenance WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment (1) Oil quantity check ❶ (2) Cleaning ❷ ❹ ❸...
  • Page 153 Adjustment Procedure Results of Improper Adjustment For your long usage, the following routines (checks and mainte- nance) are recommended: (1) Oil quantity check 1. Confirmation of the amount of oil in the hook oil tank Confirm that the top of oil amount indicating rod ❶ is between the upper engraved marker line A and the lower engraved marker line B of the oil amount indicating window.

  • Page 154: Application Of Appropriate Grease

    Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment Description Part No ❶ JUKI GREASE A TUBE 40006323 1) Needle bar lower bushing and presser bar bushing ❶ ❷ ❸...
  • Page 155 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). 5. When a grease-up error has been displayed, the start-up of a sewing machine is prohibited.

  • Page 156: Face Plate Mechanism

    (3) Application of appropriate grease WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 3) Face plate mechanism ❶ ❷ ❸...
  • Page 157 Adjustment Procedure Results of Improper Adjustment 3) Face plate mechanism ◦ Grease is not required for the 1. Apply appropriate grease to the roller (armʼs vertical sliding sec- presser bar ❷. tion) of the needle bar connecting section. If grease is applied, contamina- 2.

  • Page 158: Inside A Gear Box

    (3) Application of appropriate grease WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 4) Inside a gear box Apply exclusive grease to the whole me- chanical section.
  • Page 159 Adjustment Procedure Results of Improper Adjustment 4) Inside a gear box * It is prohibited to use oil for the mechanism element inside a gear box because of special surface treatment and an exclusive grease lubrication. 1. Apply grease to the mechanism element inside a gear box. “When you have torn it down including removal of the shaft, ap- ply grease to a grease groove and fluctuation part of each shaft.

  • Page 160: Application Of Appropriate Grease

    (4) Application of appropriate grease WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment Fixed to the arm ❺ ❷ When pulling it out, remove this pipe too.
  • Page 161 Adjustment Procedure Results of Improper Adjustment Configuration of lubrication mechanism parts is as shown in the drawing. 1. Oil tank Pull up the oil tank ❶ straight from the float case guide ❷ to take it out. Remove and adjust the lubrication pipe ❸ and others within the permissible range where they can be stretched.

  • Page 162: Thread Take-Up Lever Mechanism

    Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment ❽ ❼ ❾ ❼ ❹ ❺ ❻ ❺ ❸ ❷ ❶ Info about the appropriate grease Description Part No JUKI GREASE A TUBE 40006323 – 146 –...
  • Page 163 Adjustment Procedure Results of Improper Adjustment (Important) No lubrication is needed for the thread take-up lever. (Maintenance-free mechanism) When adjusting the thread take-up lever mechanism, the following items shall be observed: Replacement of the thread take-up lever 1. Remove the needle bar ❶ and the needle bar connector ❷. ◦...

  • Page 164: Replacement Of The Motor

    (6) Replacement of the motor WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment ❸ Hand wheel ❶ ❹ (First screw) ❺...
  • Page 165 Adjustment Procedure Results of Improper Adjustment The following is the method of replacement when the motor ❶ is out of order. 1. Remove the second setscrew ❷ of the hand wheel. (4mm hex- agonal) 2. Remove the first setscrew ❸ (flat section) of the hand wheel. (4mm hexagonal) 3.

  • Page 166: Replacing The Fuse

    (8) 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 167 2. Loosen the fixation screws ❹, and remove the plate for exiting the cords. ❸ ❹ 3. Remove the connector ❺ and ❻, and then the power cord. (Caution) The connector has a lock mechanism. Pull it out while pushing the lock mechanism part.

  • Page 168: How To Remove A Panel

    (10) How to remove a panel WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. 1. Remove the rear cover (six setscrews of the cover).
  • Page 169 4. Pull out the panel❺ short. ❺ 5. Remove the panel cable clamp screw ❻, re- move the cable connector ❼, and replace the panel. ❻ ❼ 6. After replacement of the panel, reassemble it ac- cording to the opposite procedure. (Caution) Pull the panel cable ❸.If it is loose, it may interfere with the upper shaft and the like.

  • Page 170: Screws For Attachment And Positions Of External Parts

    8 . Screws for attachment and positions of external parts WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Standard adjustment 283.5 13.5 2×M4 Depth 4...

  • Page 171: Dry Hook

    9. Dry hook WARNING : Be sure to turn the power OFF before the following work in order to prevent personal injury due to unintentional starting of the sewing machine. Adjustment Procedure Results of Improper Adjustment (1) Cautions when a dry hook is used For the dry hook (RP hook), lubrication is given to the hook race with the use of a specific material.

  • Page 172: Connection Diagram Of The Head And Electrical Component

    10. Connection diagram of the head and electrical component (1) Digital type Molex:3191 SC-951Control BOX CN20 DDL-9000CS head section DC280V Output DC280VInput CN12 3P 3P Principal axis motor output *A,B,C:40175581 FLT-PWR CORD ASSY (200V) Molex:5219 TE20 4P 4P AMP: 2-178136-5 :40175582 FLT-PWR CORD ASSY (100V) 40175575 :40176825 FLT-PWR CORD ASSY (CE)

  • Page 173: Full Digital Type

    (2) Full digital type Molex:3191 SC-950 Control BOX CN20 DDL-9000CS head section DC280V Output DC280VInput CN12 3P 3P Principal axis motor output AMP: *A,B,C:40175581 FLT-PWR CORD ASSY (200V) Molex:5219 TE20 4P 4P 2-178136-5 :40175582 FLT-PWR CORD ASSY (100V) 40175575 :40176825 FLT-PWR CORD ASSY (CE) M1 CORD ASSY ※Type：...

  • Page 174: Troubles And Corrective Measures

    11. Troubles and corrective measures (1) Mechanical components Trouble Cause (1) Cause (2) Check and corrective measures 1. Skipping of one or more 1-1) The needle thread pass- 1-A) Something is wrong with the needle Check needle thread routing, thread entangled on stitches occurs at the start ing through the needle threat route and the needle thread...
  • Page 175 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page From the previous page 1-G) The knife thread guide, moving knife, Check whether the hole portion of the hook (especially or hook has a flaw. the blade top) or knife thread guide has a flaw. If there is a flaw there, buff the flaw portion sufficiently.
  • Page 176 Trouble Cause (1) Cause (2) Check and corrective measures 2. The needle thread slips 2-1) The length of the needle 1-A) Too high 1st thread tension due to Turn off the power, push the hook thread presser into off the needle at the sew- thread passing through delayed thread trimming timing causes the bobbin case by hand when the needle reaches the...
  • Page 177 Trouble Cause (1) Cause (2) Check and corrective measures 3. The thread tension is 3-1) The tension of the needle 1-A) The hook thread presser is inappropri- Adjust the hook thread presser in accordance with 3.- inappropriate at sewing thread is too low at sew- ately mounted.
  • Page 178 Trouble Cause (1) Cause (2) Check and corrective measures 5. The bobbin thread is un- 5-1) The backward movement 1-A) The backward movement of the mov- Measure the backward movement length of the moving trimmed. (But the needle of the moving knife is ing knife is inappropriately adjusted.

  • Page 179: Sewing Performance

    (2) Sewing performance Trouble Cause (1) Cause (2) Check and corrective measures 1. Puckering 1-1) The needle is too thick. 1-A) Deformation of clothes by pene- Use a thin needle as much as possible. Use a Wrinkles developed around trating a needle into cloth KN or SF needle (standard needle).
  • Page 180 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page 1-4) The material is inappropriate- 4-A) The needle hole of the throat Replace the current gauge with a new one ly stretched. plate is too large. having a smaller diameter hole. 4-B) The thread relief on the back- Use a presser with a smaller thread relief on side of the presser is too large.
  • Page 181 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page 1-6) Occurrence of puckering by 6-A) The course-woven and The needle thread is made easy to adjust tightening a thread close-woven stitches come to slightly to the low tension by using a weak occur because weaving yarns spring for a thread take-up spring and a thread of clothes are gathered with...
  • Page 182 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page The influence of thread tightness by a thread take-up and a feed dog is reduced by using small presser with a clearance groove. Presser asm. Part No. D1524-555-DBA (Small clearance groove) Part No.
  • Page 183 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page 2-2) Pressing is inappropriate. 2-A) The pressure is too high. Minimize the pressure. For some materials, sewing with the presser slightly floated with the adjustable screw of the minute presser lifter is effective.
  • Page 184 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page 3-3) The stroke of the thread take- Move the arm thread guide rightward to reduce up lever is too long. the thread feeding with the thread take-up lever.
  • Page 185 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page From the previous page 7-D) The bobbin thread idles in the Adjust the tension of the idling prevention bobbin case. spring with reference to 3.-(4). 7-E) The bobbin has a flaw. Remove a burr at the flaw portion, or replace the bobbin.
  • Page 186 Trouble Cause (1) Cause (2) Check and corrective measures 4. Stitch skipping 4-1) The needle is defective. 1-A) The needle is bent. Replace the needle. The machine fails to form a com- plete stitch. 1-B) The needle mounting direction Mount the needle appropriately. Replace the needle clamp screw.
  • Page 187 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page 4-6) The thread take-up spring is 6-A) The stroke of the thread take- Shorten the stroke of the thread take-up spring. inappropriately adjusted. up spring is too long. 6-B) The tension of the thread take- Reduce the tension of the thread take-up up spring is too high.
  • Page 188 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page 5-4) The needle is defective. 4-A) The needle is bent. Replace the needle. 4-B) The needle has a flaw. Replace the needle. 4-C) The needle tip is blunt. Replace the needle.
  • Page 189 Trouble Cause (1) Cause (2) Check and corrective measures 6. Thread breakage at back or back- 6-1) The needle has improperly 1-A) The orientation of the needle is Attach the needle so that the long groove of tuck sewing been attached. wrong.
  • Page 190 Trouble Cause (1) Cause (2) Check and corrective measures 7. Thread breakage at needle entry 7-1) The needle has improperly 1-A) The orientation of the needle is Attach the needle so that the long groove of or idle stitching. been installed. wrong.
  • Page 191 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page 8-5) Pressing is inappropriate. 5-A) The presser is floating. Readjust the position of the presser bar holder. 5-B) The parallel level of the presser Replace the presser, or loosen the presser bar is inappropriate.
  • Page 192 Trouble Cause (1) Cause (2) Check and corrective measures 10. Irregular stitch 10-1) The matters related to the 1-A) Hook oil is too large or too small Adjust the oil volume to the appropriate level. Thread knots appear on either hook are inappropriate.
  • Page 193 Trouble Cause (1) Cause (2) Check and corrective measures From the previous page From the previous page 5-B) The thread path has a flaw. Finish the thread path appropriately. 5-C) The thread path has an obsta- Correct threading. cle. 10-6) The material is inappropriate- 6-A) The needle hole of the throat Replace the current gauge with a new one ly stretched.
  • Page 194 Trouble Cause (1) Cause (2) Check and corrective measures 12. The bird’s nest at the start of sew- 12-1) The remaining length of By strengthening the first thread tension, short- ing is big. needle thread after a thread en the remaining length of needle thread after trimming is long.
  • Page 195 Trouble Cause (1) Cause (2) Check and corrective measures 16. Faulty thread trimming 16-1) Wear of the cutting portion It is replaced by a new knife. (The needle thread is not of a thread trimming knife or trimmed.) loop spreading knife (The bobbin thread is not trimmed.) 16-2) The thread loop formation is...

  • Page 196: Drawing Of Table

    12．Drawing of table 1200 156.5 （138.5） 110.5 +0.5 Ｚ Ｚ （172.5） 279±1 68.5±0.5 Ｙ Ｙ +0.5 52.5 （40） （525.4） 154.6 Rubber cushion installing drawing for reference X-X部ゴム取付参考図 V-V(1:1) (2 locations) (2 locations) (2 locations) (２ヵ所） （２ヵ所） （２ヵ所） ∅26 　（４ヵ所） (4 locations) ∅16 ∅26 A 4×ø3.4 on the bottom surface, depth 20 (Drill a hole at the time of set-up.)
  • Page 198 Please do not hesitate to contact our distributors or agents in your area for further information when necessary. Copyright © 2016 JUKI CORPORATION * The description covered in this engineer's manual is subject to change for improvement of the •...

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