JUKI SC-910 Engineer's Manual
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JUKI SC-910 Engineer's Manual

JUKI SC-910 Engineer's Manual

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SC-910/SC-910A
ENGINEER'S MANUAL
40012146
No.E358-01

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Summary of Contents for JUKI SC-910

  • Page 1 ® SC-910/SC-910A ENGINEER’S MANUAL 40012146 No.E358-01...
  • Page 2 And this manual describes the contents and individual parts which are not described in the Instruction Manual. It is advisable to use the Instruction Manuals for IP-100 and SC-910/SC-910A and the relevant Parts Lists with this Engineer’s Manual when carrying out the maintenance of this sewing machine.

  • Page 3: Table Of Contents

    (4) Change-over procedure of the jumper ..............49 (5) Automatic compensation of neutral point of the pedal sensor ......49 7. CONNECTING PROCEDURE OF JUKI OPTIONAL DEVICE..... 50 (1) Connection of the bobbin thread remaining amount detection device, AE ..50 (2) Connection of the material end sensor (ED) ............
  • Page 4 (1) Replacing the fuse ...................... 57 (2) Power voltage changeover procedure ..............58 14. Expansibility ....................59 15. REGARDING ERROR DISPLAY (SC-910/SC-910A) ......... 60 (1) Error code list (SC-910/SC-910A) ................62 15. BLOCK DIAGRAM ..................63 (1) SC-910/SC-910A block diagram ................63 (2) IP-100 operation panel block diagram ..............

  • Page 5: Specification

    4) By using the flash ROM for CPU, the future version-up can be adapted. 5) SC-910 control box can be used for DD (direct-drive) system machine head and drive system machine head by connecting the small-sized motor unit (M-91).

  • Page 6: Configuration

    (Caster) Air vent Pulley cover Resistance pack Oil amount indicating Thread stand Bobbin winder window (SS, SH) PSC box (SC-910) Thread cutter retainer Max. speed control knob Thread release changeover Operation pedal screw Touch-back switch Micro lifter screw...

  • Page 7: Ddl-8700/Sc-910/M91

    Power switch Operation pedal Control panel Touch-back switch Synchronizer Thread wiping (wiper) device L-shaped thread stand Screw or caster for level adjustment of table / stand PSC box (SC-910) Resistor pack Max. speed control knob Motor (M-91) – 3 –...

  • Page 8: Explanation Of Control Panel

    4. EXPLANATION OF CONTROL PANEL (1) List of control panels of CP-160 and IP-100 CP-160 IP-100 – 4 –...
  • Page 9 Description < < Power indication LED : Lights up when the power switch is turned ON. < < Max. speed limit variable resister : Maximum speed is limited when this resister is moved in the left direction ( < Reverse stitching pattern switch : Used for specifying the reverse stitching pattern to be sewn. <...

  • Page 10: Explanation Of Control Panel Cp-160

    (2) Explanation of control panel CP-160 1) Reverse stitching pattern When the sewing machine performs the free stitching operation, the machine performs the reverse stitching operation at the start and end of sewing. The reverse stitching operation can set the ON and OFF settings. Furthermore, single and double reverse stitching patterns can be selected.

  • Page 11: Example Of Application

    (3) Example of application 1) When the CP-160 is used together with the material end sensor (ED : optional), it can be used as a small edge-controller. (Method) Adjust the position to mark of the CP-160, turn ON material end sensor ON/OFF switch the CP-160, and turn ON mark of the automatic one-shot stitching.
  • Page 12 2) Label attaching is performed by the automatic one-shot stitching with the CP-160 (Method) Select mark on the CP-160, and turn ON mark of the automatic one-shot stitching. Explanation) Number of stitches at the section CD can be set up to 500 stitches. If the stitch length is 2 mm, it is possible to sew approximately 1,000 mm (1 m).
  • Page 13 Section of low speed SC-910 function setting No. 64 (0 to 250 rpm changeable : 200 rpm was fixed in the past.) Time Example) Use for reference.

  • Page 14: Explanation Of Control Panel Ip-100

    (4) Explanation of control panel IP-100 1) Information Setting and checking of various data can be performed with the information. For the information, there are the operator level and the maintenance personnel level. [Operator level] 1) Turn ON the power. 2) Press switch to display the information screen.
  • Page 15 [Maintenance personnel level] 1) Turn ON the power. When the needle bar is not in the UP position, turn the handwheel to bring the needle bar to its UP position. 2) Press switch for approximately three seconds to display the information screen. 3) Press switches corresponding to the various functions.
  • Page 16 3. Sewing management information For the sewing management information, there are the operator level and the maintenance personnel level. [Operator level] Press switch in the information screen. [Maintenance personnel level] Press switch for approximately three seconds in the information screen. Pictograph on the left end of the sewing management information is shown in reverse video.
  • Page 17 5. Error record display Press error record display switch in the sewing management information screen (maintenance personnel level). Error record screen When switch is pressed, the error record scrolls up or down. Explanation of display Record No. Error No. ime occurred (Unit : time) Error record of approximately 100 cases (depending on the memory capacity) can be stored in memory in the order of the latest.
  • Page 18 Operating procedure [Maintenance personnel level] Press communication mode switch for approximately three seconds in the information screen. ictograph on the left end of the communication screen is shown in reverse video. Communication screen (Maintenance personnel level) Data selection Kind of selected data Data Data communication Start of...
  • Page 19 Select the method to perform communication and press set key switch Reference : Communication method cannot be selected by downloading of program. 3 Data communication source 4 Data communication destination Set data communication source and data communication destination in the ten key screen, or "+" or "– "...
  • Page 20 8. All sewing machine data 1. Data such as sewing setting data, adjustment data, etc. which are memorized in the sewing machine can be stored in one package. 2. It is possible to download the all sewing machine data to the other sewing machines to make the same setting.
  • Page 21 9. Program data 1. When the change of software occurs in the future due to Ver-up or the like, rewriting of the program can be performed.Rewriting of the program is performed with each CPU. Communication screen (Download of IP-100 program data) Folder structure of program (* .PRG) file in the smart media Smart media PROG...
  • Page 22 10. Smart media format Perform formating of the smart media. The media formated with the personal computer or the like may not be used. When using the media with IP-100, be sure to perform formating with IP-100. Press smart media format switch in the information screen (maintenance personnel level) Smart media format confirmation screen : Formating is performed.

  • Page 23: Matters That Demand Special Attention Regarding The Operation Panel, Ip-100

    For the operation panel, IP-100, there are several kinds of types in accordance with the specifications. Types that can be used for SC-910 are TYPE-B and TYPE-C. The product is TYPE B0A or TYPE C0A which is indicated on the name plate seal located in the rear of the panel case.

  • Page 24: Error Display

    3) Error Display 1. Error display * Error is informed by means of the panel display, machine head mirror LED blink and control box buzzer. Two different kinds of screens of the panel display screen appear due to the difference of the procedures. 1.

  • Page 27: Warning List

    5) Warning list Contents and display of warning Corrective measure Remarks A201 Replacement of oil warning • Press to close warning screen, and Refer to perform replacement of needle. Then clear Instruction Manual the value in the clear screen. 6-15-(2) Sewing •...

  • Page 28: Control Box (Sc-910/Sc-910A)

    Optional unit A IO circuit board A (asm.) Following connectors are prepared on the front face of SC-910. Connect the connectors coming from the machine head to the corresponding places so as to fit the devices mounted on the machine head.

  • Page 29: Setting For Functions

    (2) Setting for functions Functions can be selected and specified by means of the four setting switches and light emitting diode located inside the front cover of the SC-910/SC-910A. Specified No. Specified value Switch for entering specified value changed and updating setting No.
  • Page 30 5) When you want to advance the setting No., press switch to advance the setting No. Setting No. When you want to return the setting No., press switch to return the setting No. (Caution) Keep pressing switch or switch and the setting No. will advance (re- turn) continuously.

  • Page 31: Function Setting List

    (3) Function setting list Indication of Ref. Item Description Setting range function setting page Soft start The number of stitches to be sewn at a low speed when the soft-start 0 to 9 function function is used at the start of sewing. (Stitches) 0 : Soft-start function is not operative.
  • Page 32 Indication of Ref. Item Description Setting range function setting page Bird’s nest This function is effective in combination with the machine head with bird's nest 0 to 2 prevention prevention function (optional unit A is necessary). function 0 : Bird's nest prevention function is not operative. 1 : Bird's nest prevention function is operative.
  • Page 33 Indication of Ref. Item Description Setting range function setting page Number of Sewing speed at the start of sewing (soft-start) 150 to 5500 rotation of (r.p.m.) soft-start 8 0 0 One-shot One-shot speed (The max. value depends on the number of rotation of the 200 to MAX speed sewing machine head.)
  • Page 34 Indication of Ref. Item Description Setting range function setting page Reverse Function of reverse revolution to lift the needle at the time of (after) thread revolution to lift trimming the needle after 0 : Not provided with the function of reverse revolution to lift the needle thread trimming after thread trimming 1 : Provided with the function of reverse revolution to lift the needle after...
  • Page 35 Indication of Ref. Item Description Setting range function setting page Function of Speed limitation is performed at the time of start-up of the sewing machine 0 to 5 limitation of (excluding the start of sewing). acceleration at It is effective when operating inching sewing. the start of rotation Retry function...
  • Page 36 Indication of Ref. Item Description Setting range function setting page Presser lifter When the IP-100 is connected and a corner pattern is selected, this function 1 0 6 switch 1 needle provides the capability of stitch compensation during in-corner sewing the compensation the aid of a presser lifter switch.
  • Page 37 Indication of Ref. Item Description Setting range function setting page Selection of When the IP-100 is connected, switch selection is performed to start in-corner 0 to 6 1 1 6 corner teaching sewing in the case of corner pattern sewing. start switch 0: No function 1: Left needle selector switch...

  • Page 38: Detailed Explanation Of Selection Of Functions

    (4) Detailed explanation of selection of functions 1 1 1 1 1 Selection of the soft-start function (Function setting No. 1) 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.
  • Page 39 8 8 8 8 8 Optional switch function selection (Function setting No. 12) : It is used only when it is combined with the machine head provided with the optional switch. Functions to be assigned to the optional switch can be selected from the following functions. 0 : No function (Standard setting) 1 : Needle up / down compensating stitching : Every time the switch is pressed, normal feed stitching by half stitch is performed.
  • Page 40 6. Needle thread release function (Function setting No. 28) This function sets the number of stitches until the clamped needle thread is held after the start of sewing Setting range : 0 to 30 stitches 7. Thread draw-out/return solenoid (Function setting No. 89) This function sets whether the motion of draw-out/return solenoid (LZ) is performed or prohibited.
  • Page 41 & & & & & Function of reverse feed stitching on the way (Function setting Nos. 30 to 33) Functions of the limit of number of stitches and thread trimming command can be added to the touch back switch on the sewing machine head. Function setting No.
  • Page 42 ( ( ( ( ( Adjustment of the pedal stroke (Function setting Nos. 39 to 44 and 48) No. 43 No. 48 No. 41 No. 42 No. 39 No. 40 No. 44 Low speed Speed in compliance with depressing amount of pedal section 11 12 13 14 15 (mm)
  • Page 43 6. Pedal stroke for reaching the maximum number of rotations (Function setting No. 44) Stroke between the pedal in its neutral position and the position where the sewing machine reaches at its highest speed can be adjusted. Adjusting range 1.0 to 15.0 [mm] <0.1 / mm> 7.
  • Page 44 3. Compensation of off-timing of solenoid for reverse feed stitching at the end of sewing (Function setting No. 53) Off-timing of solenoid for reverse feed stitching at the start of sewing can be compensated by the unit of angle. Adjusting range -36 to 36 <1 / 10°>...
  • Page 45 i i i i i Function of stop immediately after the reverse feed stitching at the start of sewing (Function setting No. 60) This function temporarily stops the sewing machine even when keeping depressing the front part of the pedal at the time of completion of process of reverse feed stitching at the start of sewing.
  • Page 46 d d d d d Function to select the start-up speed of the sewing machine (Function setting No. 76) This function is selected in the case where the speed of the sewing machine is desired to be more at the time of start-up.
  • Page 47 l l l l l Function of prohibiting start of the sewing machine by bobbin thread counter (Function setting No. 13) When operation panel (CP-160 or higher class model) is used, and when thread trimming is executed after the predetermined value has been subtracted until the counter value is reached "-"1, this function prohibits start of sewing machine afterward.
  • Page 48 b b b b b Touch back switch 1 needle compensation function (Function setting No. 105) When the IP-100 is connected and a corner pattern is selected in this condition, this function is used to perform compensation sewing in the middle of in-corner sewing with the use of the touch back switch. 0: off Compensation sewing disabled with the touch back switch 1: on...
  • Page 49 ..Re-sewing function (Function setting No. 109) When the IP-100 is connected, this function is used to stop/use the re-sewing function (sewing retried in the middle of operation). 0: off Re-sewing function disabled 1: on Re-sewing function enabled * Setting is possible only if LH-4168 or LH-4188 is selected for the machine head.
  • Page 50 £ £ £ £ £ Number of stitches for teaching replay (Function setting No. 113) The number of stitches is selected for teaching replay when corner teaching is carried out (measuring the num- ber of stitches for unilateral needle sewing). 0: The number of replay stitches coincides with that of measured stitches.
  • Page 51 ¶ ¶ ¶ ¶ ¶ Selection of presser lifter switch function (Function setting No. 117) In the condition when the knee switch is connected, this function is used to select [stop or use] of the automatic presser lifter function by means of the knee switch. 0: off The automatic presser lifter is stopped with the knee switch.

  • Page 52: Changing Procedure Of The Pedal Type

    6. CHANGING PROCEDURE OF THE PEDAL TYPE (1) Parts necessary for change Part No. Description Q’ty M4009351000A Spring shaft B M4011351000 Return spring B M4012351000 Return pressure adjusting screw M2010110000 Return pressure adjusting nut (2) Attaching parts 1. Loosen return pressure adjusting nut in the pedal sensor A asm.

  • Page 53: Change-Over Procedure Of The Jumper

    (4) Change-over procedure of the jumper When the pedal sensor is changed (KFL → PFL or KFL • PFL KFL • PFL PFL → KFL), replace the jumper to fit the pedal type changed. (Caution) KFL setting PFL setting 1. Type of pedal sensor with two return springs is PFL, and that of pedal sensor with one is KFL.

  • Page 54: Connecting Procedure Of Jukioptional Device

    (2) Connection of the material end sensor (ED) 1) Connect the connector of material end sensor (ED) to connector (CN45 : 6P) of SC-910. 2) Tighten the cord of the material end sensor to- gether with other cords with cable clip band attached to the side of the box after passing it through the cable clamp.

  • Page 55: Connection Of The Pedal Of Standing-Work Machine (Pk)

    (3) Connection of the pedal of standing-work machine (PK) 1) Connect the connector of PK70 to connector (CN32 : 12P) of SC-910. 2) Tighten the cord of PK70 together with other cords with cable clip band attached to the side of the box after passing it through the cable clamp.

  • Page 56: External Input / Output Connector

    Rotation by pedal is prohibited while “L” signal is being inputted. DC5V, -5mA SOFT Input Rotation speed is limited to the soft-speed while “L” signal is being inputted. DC5V, -5mA SGND — JUKI genuine part No. Connector : Part No. HK016510130 Pin contact : Part No. HK016540000 – 52 –...

  • Page 57: Initialization Of The Setting Data

    10. INITIALIZATION OF THE SETTING DATA All contents of function setting of SC-910 can be re- turned to the standard set values. 1) Pressing all switches inside the front cover, turn ON the power switch. 2) LED displays indication with the sound “peep”, and initialization starts.

  • Page 58: Connector Connection Diagram

    11. CONNECTOR CONNECTION DIAGRAM (1) Solenoid for machine head CN46 TRMD TRM (Thread trimming) Ω Approx. 7.5 TRM COM BT (Touch back) Ω Approx. 6.5 8 9 10 11 12 13 14 BT COM WP (Wiper) Ω Approx. 8.5 1 2 3 4 5 6 7 WP COM SUB BTD SUB BT COM...

  • Page 59: Optional Cord

    12. OPTIONAL CORD (1) Relay cord A asm. for the standing sewing machine (Part No. M9701351AA0) Approx. 1.5m 1) Wiring diagram of variable pedal PK-70 and -71 CN32 Brown Ω VR (1k Variable resistor Orange Used by variable voltage for speed between 1 to 2V Yellow (Increasing / decreasing...

  • Page 60: Relay Cord A Asm. For Dc24V (Part No. M9703351Aa0)

    2) Wiring diagram of fixing max. speed CN32 Brown Orange Variable resistor for speed Yellow S GND Green Switch for lifting presser foot Blue S GND Perple Switch for thread trimming Gray S GND White Switch for high-speed Light blue S GND Pink Switch for low-speed...

  • Page 61: Maintenance

    13. MAINTENANCE (1) Replacing the fuse 1) Grasp the glass part of fuses re move them. 2) Use the fuse of which capacity is specified. : 2A/250V time-lag fuse (regenerative resistance protection fuse) Part No. KF000000040 : 6.3A/250V time-lag fuse (solenoid power fuse) Part No.

  • Page 62: Power Voltage Changeover Procedure

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

  • Page 63: Expansibility

    14. Expansibility If the parts specified below are added, the following models can be used: Item name Item No. Model Remarks DDL-5556N-7 I/O board (asm.) 40006077 LH-4168-7 LH-4188-7 EPF Board set 40022484 DLU-5494N-7 ∗ ∗ For the DLU-5494N-7, select S (Standard) and procure the IP100C separately. –...

  • Page 64: Regarding Error Display (Sc-910/Sc-910A)

    15. REGARDING ERROR DISPLAY (SC-910/SC-910A) In case of the following, check again before you judge the case as trouble. Phenomenon Cause Corrective measure When tilting the sewing machine, the When tilting the sewing machine Tilt the sewing machine after turning...
  • Page 65 When you request our service, please confirm the error codes. Checking procedure of the error code 1) Pressing switch in the control box (SC-910/ SC-910A), turn ON the power switch. 2) LED becomes display with the sound of “peep”...

  • Page 66: Error Code List (Sc-910/Sc-910A)

    • Check whether the applied power voltage one is inputted. is higher than the rated voltage + (plus) 10% or more. • 200V has been inputted to SC-910 of • Check whether 100V/200V changeover 100V specifications. connector is improperly set.

  • Page 67: Block Diagram

    16. BLOCK DIAGRAM (1) SC-910/SC-910A block diagram AC INPUT CABLE A ASM. CN140 (JS / JE / JME) (1ø 200 to 240V, CE) T5 - 1 T6 - 1 T6 - 2 MOTOR OUTPUT T5 - 2 DC OUTPUT AC INPUT...

  • Page 68: Ip-100 Operation Panel Block Diagram

    (2) IP-100 operation panel block diagram – 64 –...

  • Page 69: Drawing Of Table

    3 x ø13 drilled hole (72.2) 339.7 ±1 68.1 ±0.5 ±1 2 x ø3.5, depth 10 +0.5 JUKI (21) 52.5 logotype (525) (591) 2 x ø 3.4 on the reverse side, depth 10 Y - Y (Drill a hole at the time of set-up.)

  • Page 70: For Ddl-9000

    +0.5 2xø3.5, depth 10 3 x ø13 drilled hole ±1 68.1 ±0.5 (172.5) 2 x ø3.5, depth 10 +0.5 JUKI logotype (21) 52.5 (40) (525.4) 154.6 (591) 2 x ø 3.4 on the reverse side, depth 10 (Drill a hole at the time of set-up.)
  • Page 71 Please do not hesitate to contact our distributors or agents in your area for further information when necessary. * The description covered in this engineer's manual is subject to change for improvement of the Copyright © 2006 JUKI CORPORATION. commodity without notice.

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Sc-910a

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