Janome Sewist 780DC Instruction Manual
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Janome Sewist 780DC Instruction Manual

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Sewist 780DC

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Summary of Contents for Janome Sewist 780DC

  • Page 1 Instruction Book Sewist 780DC...
  • Page 3 IMPORTANT SAFETY INSTRUCTIONS When using an electrical appliance, basic safety precautions should always be followed, including the following: This sewing machine is designed and manufactured for household use only. Read all instructions before using this sewing machine. DANGER — To reduce the risk of electric shock: 1.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS ESSENTIAL PARTS Triple Stretch Stitch ............ 30 Names of Parts ............... 3 Stretch Stitch .............. 31 Standard Accessories ............ 4 Sculpture Stitches ............31 Stitch Reference Chart ........... 5 Zigzag Stitch ..............32 Altering the stitch width ..........32 GETTING READY TO SEW Altering the stitch length ..........

  • Page 5: Essential Parts Names Of Parts

    ESSENTIAL PARTS Names of Parts Upper thread guide Bobbin winding tension disk Spool holder (large) Spool pin Hole for extra spool pin Bobbin winder spindle Bobbin winder stopper LCD display Function keys Direct stitch selection keys Stitch reference chart Speed control slider Automatic thread cutter button Needle up/down button Auto-lock button...

  • Page 6: Standard Accessories

    Standard Accessories Part Name Part No. 1 Zigzag foot A (Set on the machine) 832523007 2 Zipper foot E 808852003 3 Satin stitch foot F 822804118 Automatic buttonhole foot R 753801004 (stored in the accessory storage) 5 Blind hemming foot G 825817009 6 Overedge foot C 822801001...

  • Page 7: Stitch Reference Chart

    Stitch Reference Chart Stitch reference charts are stored in the right side of the sewing machine. The number on each tab indicates the stitch pattern numbers. Refer to the reference chart you want by pulling the tab all the way to the right. q Stitch pattern numbers w Identification letter of the recommended foot e Stitch reference chart...

  • Page 8: Getting Ready To Sew

    GETTING READY TO SEW Connecting the Power Supply Using the foot control Turn off the power switch. Insert the pin connector into the jack. Insert the machine plug into the power inlet. Insert the power supply plug into the wall outlet. Turn on the power switch.
  • Page 9 Using the start/stop button Turn off the power switch. Insert the machine plug into the power inlet. Insert the power supply plug into the wall outlet. Turn on the power switch. q Power switch w Machine plug e Power inlet r Power supply plug t Wall outlet y Start/Stop button...

  • Page 10: Controlling Sewing Speed

    Controlling Sewing Speed Speed control slider Sewing speed can be varied by the speed control slider according to your sewing needs. To increase sewing speed, move the slider to the right. To decrease sewing speed, move the slider to the left. Foot control Depress the foot control to start the machine.

  • Page 11: Machine Operating Buttons

    Machine Operating Buttons q Start/Stop button Press this button to start or stop the machine. The machine starts running slowly for the first few stitches, and it then runs at the speed set by the speed control slider. The machine runs slowly as long as this button is being pressed.

  • Page 12: Needle Up/Down Button

    r Needle up/down button Press the needle up/down button to bring the needle up or down. t Thread cutter button Press the thread cutter button to trim the threads after sewing. The thread cutter mark will blink y while the machine cuts the threads.

  • Page 13: Lcd Display

    LCD Display NOTE: Magnetic or electrostatic interference may cause the LCD display to flicker. Do not use the machine near appliances that generate a magnetic field or an electrostatic field such as microwave ovens. The LCD display shows following information when the machine is turned on.

  • Page 14: Selecting Stitch Patterns

    Selecting Stitch Patterns To select the desired stitch pattern, press the arrow key ) until the pattern number of the desired stitch is indicated w. To refer available stitch patterns for this sewing machine, check the stitch reference chart stored in the right side of the sewing machine or the stitch chart in this manual on page 63.

  • Page 15: Presser Foot Lifter

    Presser Foot Lifter The presser foot lifter raises and lowers the presser foot. You can raise the foot about 1/4˝ (0.7 cm) higher than the normal up position for easy removal of the presser foot, or to help you place thick material under the foot. q Presser foot lifter w Normal up position e Highest position...

  • Page 16: Presser Foot Pressure Dial

    Presser Foot Pressure Dial Foot pressure can be adjusted by turning the presser foot pressure dial. Set the pressure between “3” and “6” for ordinary fabrics. Set the pressure between “1” and “3” for fine fabrics and applique sewing. Set the pressure between “5” and “6” for heavyweight fabrics.

  • Page 17: Zigzag Stitch Balanced Tension

    Zigzag stitch balanced tension For an ideal zigzag stitch, the bobbin thread does not show on the right side (top side) of the fabric, and the needle thread shows slightly on the wrong side (bottom side) of the fabric. See the illustrations for the correct appearance. To match this appearance, adjust the needle tension as necessary.

  • Page 18: Dropping Or Raising The Feed Dog

    Dropping or Raising the Feed Dog The drop feed lever is located underneath the free arm bed on the back of the machine. To drop the feed dog, push the lever in the direction of the arrow q. View from the rear To raise the feed dog, push the lever in the direction of the arrow w, as illustrated, and turn the handwheel toward you.

  • Page 19: Changing The Needle

    Changing the Needle CAUTION: Turn OFF the power switch before changing the needle. Raise the needle to its highest position by turning the handwheel counterclockwise. A loose needle or a loose screw may cause machine malfunction or needle to break. Loosen the needle clamp screw by turning it counterclockwise.

  • Page 20: Setting The Spool Of Thread

    Setting the Spool of Thread Horizontal spool pin Lift up the spool pin. Place a spool of thread on the spool pin. Attach the large spool holder, and press it firmly against the spool of thread so that the spool rests on the supporter.

  • Page 21: Winding The Bobbin

    Winding the bobbin NOTE: Set the speed control slider at its fastest position for bobbin winding. z Draw the thread from the spool and pass the thread around the bobbin winding tension disk. q Bobbin winding tension disk x Thread through the hole in the bobbin from the inside to the outside.

  • Page 22: Inserting The Bobbin

    Inserting the bobbin CAUTION: Turn OFF the power switch before inserting the bobbin and threading the bobbin holder. z Place a bobbin in the bobbin holder with the thread running off counterclockwise as shown on the hook cover plate. q End of thread w Bobbin holder e Hook cover plate x Hold the bobbin with your fingertip so it does not...

  • Page 23: Threading The Machine

    Threading the Machine Raise the presser foot. Press the needle up/down button q to raise the thread take-up lever to its highest position. q Needle up/down button CAUTION: Turn OFF the power switch before threading the machine. z Turn the power switch off. Draw the end of the thread around the upper thread guide.

  • Page 24: Built-In Needle Threader

    Built-in Needle Threader CAUTION: Turn off the power switch when using the needle threader. NOTE: The needle threader can be used with a #11 to #16 needle or a blue tip needle. Thread sizes 50 to 90 are recommended. z Press the needle up/down button q to raise the needle to its highest position.

  • Page 25: Drawing Up The Bobbin Thread

    Drawing up the Bobbin Thread After using auto thread cutting or threading the bobbin holder, you can start sewing without drawing up the bobbin thread. However, you need to draw up the bobbin thread when sewing gathering stitches etc. z Raise the presser foot. Hold the needle thread lightly with your left hand.

  • Page 26: Setting Mode

    Setting Mode In the setting mode, you can set the following functions. • Buzzer sound setting • Needle stop position setting • Auto-off timer setting To enter the setting mode, turn the power switch off. Press and hold the needle up/down button q and turn the power switch on until the setting mode screen appears.

  • Page 27: Needle Stop Position Setting

    Needle stop position setting You can set the needle stop position to up or down when the machine stops. Enter the setting mode. Press the “ ” of the arrow key q. The default setting is down and “dn” mark is blinking. z To set the needle stop position to the up position, press “+”...

  • Page 28: Basic Sewing Straight Stitch Sewing

    BASIC SEWING Straight Stitch Sewing q Stitch pattern: 01 or 04 w Needle thread tension: 2 to 6 e Presser foot: Zigzag foot A NOTE: When sewing with the satin stitch foot F or buttonhole foot R, pull the thread to the left to hold the thread. Starting to sew Raise presser foot and position the fabric next to a seam guide line on the needle plate.

  • Page 29: Auto Thread Cutting

    Auto Thread Cutting To cut the threads automatically after locking stitches, press the thread cutter memory key. The thread cutter icon appears on the LCD display. q Thread cutter memory key w Thread cutter icon When buttonhole, tacking, darning or eyelet is selected, the machine will cut the threads automatically after sewing is finished.

  • Page 30: Using Seam Guides

    Using Seam Guides The seam guides on the needle plate and the hook cover plate help you to measure seam allowance. The numbers on the needle plate indicate the distance from the center needle position in inches and millimeters. q Center needle position The front seam guides are marked at 1/4˝, 3/8˝...

  • Page 31: Altering The Needle Drop Position

    Altering the Needle Drop Position The needle drop position can be altered for straight stitch patterns 01 to 05, 47, 48 and 49. Press the “–” sign on the stitch width adjusting key to move the needle to the left. Press the “+”...

  • Page 32: Variety Of Straight Stitches

    Variety of Straight Stitches Lock-a-matic Stitch q Stitch pattern: w Thread tension dial: 2 to 6 e Presser foot: Zigzag foot A Use this stitch to secure the beginning and the end of a seam with backstitching. When you reach the end of the seam, press the reverse button once.

  • Page 33: Stretch Stitch

    Stretch Stitch q Stitch pattern: w Thread tension dial: 3 to 6 e Presser foot: Zigzag foot A This stitch is a narrow stretch stitch designed to eliminate puckering on knit fabrics and bias seams, while permitting the seam to be pressed completely open flat. Use this stitch for seaming fine fabrics.

  • Page 34: Zigzag Stitch

    Zigzag Stitch q Stitch pattern: w Thread tension dial: 3 to 7 e Presser foot: Zigzag foot A The zigzag stitch is one of the most useful and versatile stitches. It is used for overcasting, mending, appliqué, and also used as a decorative stitch. NOTE: Use interfacing when sewing on stretch fabrics such as knit, jersey or tricot.

  • Page 35: Variety Of Overcasting Stitches

    Variety of Overcasting Stitches Overcasting with Zigzag Stitch q Stitch pattern: w Thread tension dial: 3 to 7 e Presser foot: Overedge foot C CAUTION: • The “A” foot is displayed on the LCD when zigzag stitch pattern 07 is selected. However, use overedge foot C when sewing overcasting.

  • Page 36: Knit Stitch

    Knit Stitch q Stitch pattern: w Thread tension dial: 3 to 6 e Presser foot: Zigzag foot A Place your fabric to allow a 5/8˝ (1.5 cm) seam. Trim excess close to the stitching. Be careful not to cut the stitches.

  • Page 37: Buttonholes

    Buttonholes The following 3 types of buttonholes are available. q Square buttonhole This buttonhole is widely used on medium to heavy fabrics. w Keyhole buttonhole The keyhole buttonhole is widely used on medium to heavy fabrics. It is also suitable for larger and thicker buttons.
  • Page 38 Square Buttonhole q Stitch pattern: w Thread tension dial: 1 to 4 e Presser foot: Automatic buttonhole foot R The size of a buttonhole is automatically set by placing a button in the rear of automatic buttonhole foot R. The button holder of the foot takes a button size of 3/8˝ (1 cm) to 1˝...
  • Page 39 v Lower the presser foot and pull the buttonhole lever down as far as it will go. y Buttonhole lever NOTE: The reference lines on the buttonhole foot can be used as a positioning guide. Make sure there is no gap between the slider and stopper, otherwise the buttonhole will be out of position or there will be a sewing gap.

  • Page 40: Altering The Buttonhole Width

    n The buttonhole is sewn in the sequence as shown. When the buttonhole is finished, the machine will stop automatically with the needle in the up position. m When buttonhole sewing is finished, push the buttonhole lever upward as far as it will go. y Buttonhole lever , Remove the fabric and place a pin just below the bartack to prevent accidentally cutting the stitches.

  • Page 41: Keyhole Buttonhole

    Keyhole Buttonhole q Stitch pattern: w Thread tension dial: 1 to 4 e Presser foot: Automatic buttonhole foot R Sewing procedure is the same as square buttonhole. The buttonhole width can be varied from 5.5 to 7.0. The stitch density can be varied from 0.3 to 0.8. Use the seam ripper and an eyelet punch to open the buttonhole.

  • Page 42: Corded Buttonhole

    Corded Buttonhole q Stitch pattern: w Thread tension dial: 1 to 4 e Presser foot: Automatic buttonhole foot R z Use the same procedure as the square buttonhole sewing. Set the stitch width to match the thickness of the cord used. With the buttonhole foot raised, hook the filler cord on the spur at the back of the buttonhole foot.

  • Page 43: Darning Stitch

    Darning Stitch q Stitch pattern: w Thread tension dial: 3 to 6 e Presser foot: Automatic buttonhole foot R Starting to sew z Attach the automatic buttonhole foot R and pull the z x c v button holder q all the way out. Draw the needle thread to the left through the hole of foot.

  • Page 44: Tacking

    Tacking q Stitch pattern: w Thread tension dial: 3 to 6 e Presser foot: Satin stitch foot F Tacking is used to reinforce pockets, crotches and belt carriers where extra strength is needed. Start sewing Start the machine and sew until the machine stops automatically.

  • Page 45: Eyelet

    Eyelet q Stitch pattern: w Thread tension dial: 1 to 4 e Presser foot: Satin stitch foot F The eyelet is used for belt holes etc. Starting to sew Lower the needle at the starting point and lower the presser foot. Start the machine. The machine will stop automatically when completed.

  • Page 46: Zipper Sewing

    Zipper Sewing q Stitch pattern: w Thread tension dial: 1 to 4 e Presser foot: Zigzag foot A Zipper foot E Attaching the zipper foot Fit the pin on zipper foot E to the groove on the foot holder. q Groove w Pin (A): To sew the left side of the zipper, attach the zipper foot with the pin on the right-hand side.
  • Page 47 Start sewing z Fold back the left seam allowance. Turn the right seam allowance under to form a 0.2 to 0.3 cm (1/8˝) margin. Place the zipper teeth next to the fold and pin in place. Set the stitch length and thread tension back to the original setting.
  • Page 48 v Close the zipper and spread the fabric open flat with the right side facing up. Attach the Zigzag foot A. Adjust the stitch length to 5.0, stitch width to 3.5 (default value) and the thread tension dial to 1-3. Baste the opened fabric and zipper tape together.

  • Page 49: Blind Hemming

    Blind Hemming q Stitch pattern: w Thread tension dial: 1 to 4 e Presser foot: Blind hem foot G z Fold a hem with the wrong side of the fabric up to form a 1/4˝ (0.5 cm) allowance. q Wrong side of fabric w 1/4˝...

  • Page 50: Button Sewing

    Button Sewing q Stitch pattern: w Thread tension dial: 3 to 7 e Presser foot: Satin stitch foot F r Feed dog: Lowered Lower the feed dog (refer to page 16). Set the speed control slider at a slower speed. Match the holes of button to the horizontal slot of the presser foot and lower the foot to hold the button in place.

  • Page 51: Gathering

    Gathering q Stitch pattern: w Thread tension dial: 1-4 e Presser foot: Zigzag foot A z Loosen the thread tension to “1” and increase the stitch length to 5.0. Pull both threads 4˝ (10 cm) under and behind the presser foot (refer to page 23). x Sew two rows of straight stitches 1/4˝...

  • Page 52: Decorative Stitches Patchwork

    DECORATIVE STITCHES Patchwork q Stitch pattern: 47 and 52 w Thread tension dial: 3 to 6 e Presser foot: Zigzag foot A Satin stitch foot F z Attach the zigzag foot A. Place the patchwork pieces right sides together. Select stitch pattern 47. Sew while guiding the edge of the fabric to keep a precise 1/4˝...

  • Page 53: Quilting

    Quilting q Stitch pattern: w Thread tension dial: 3 to 6 e Presser foot: Zigzag foot A r Quilting guide bar Attaching the quilting guide bar The quilting guide bar is helpful when sewing parallel, evenly spaced rows of stitching. Insert the quilting guide bar into the opening and slide the quilting guide bar to the position according to the desired space between seams.

  • Page 54: Applique

    Applique q Stitch pattern: w Thread tension dial: 1 to 4 e Presser foot: Satin stitch foot F r Presser foot pressure dial: 1 to 3 * The stitch patterns 28 and 29 can also be used. Place an applique on the fabric and baste or pin it in place. Lower the needle at the outer edge of the applique.

  • Page 55: Pintucking

    Pintucking q Stitch pattern: w Thread tension dial: 3 to 6 e Presser foot: Blind hem foot G NOTE: The “A” foot is displayed on the LCD when straight stitch pattern 04 is selected. However, use blind hem foot G when sewing pintuck. Fold the fabric with the wrong sides together.

  • Page 56: Drawn Work

    Drawn Work q Stitch pattern: w Thread tension dial: 1 to 4 e Presser foot: Satin stitch foot F Drawn work uses the same method as fringing. Choose a firm, woven fabric like linen where threads can be removed easily. z Carefully cut the fabric on the grain.

  • Page 57: Fagoting

    Fagoting q Stitch pattern: w Thread tension dial: 3 to 6 e Presser foot: Satin stitch foot F * The stitch patterns 34, 53 and 55 can also be used. Use these stitches to join two pieces of fabric to create an open work appearance and add design interest.

  • Page 58: Smocking

    Smocking q Stitch pattern: w Thread tension dial: 3 to 6 e Presser foot: Satin stitch foot F * The stitch patterns 14, 34, 37 and 38 can also be used. Smocking is a delicate decorative treatment used on children’s clothes or women’s blouses. Use a soft and lightweight fabric such as batiste, gingham or challis.

  • Page 59: Clasp Stitch

    Clasp Stitch q Stitch pattern: w Thread tension dial: 3 to 4 e Presser foot: Satin stitch foot F You can close quilt layers and using the clasp stitch. Select the clasp stitch. Press the auto-lock button. Start sewing. The machine sews clasp stitch and locking stitch then stops automatically.

  • Page 60: Decorative Stitches

    Decorative Stitches q Stitch pattern: w Thread tension dial: 3 to 6 e Presser foot: Satin stitch foot F * Stitch patterns 53-80 can also be used. For the best sewing results, carefully align and guide the fabric when you sew with decorative stitches. Use a tear-way backing if necessary.

  • Page 61: Care Of Your Machine Cleaning The Hook Race And Feed Dog

    CARE OF YOUR MACHINE Cleaning the Hook Race and Feed Dog WARNING: Turn the power switch off and unplug the machine before cleaning. Do not dismantle the machine other than as explained in this section. CAUTION: Do not store the machine in a high-humidity area, near a heat radiator, or in direct sunlight.

  • Page 62: Correcting Deformed Stitch Patterns

    Correcting Deformed Stitch Patterns The sewing results of stretch stitch patterns may vary depending on sewing conditions, such as sewing speed, fabric type, number of layers etc. If stretch stitch patterns are deformed, correct them by turning the feed balancing dial with the screwdriver. If the pattern is compressed, turn the dial in the direction of “+”.

  • Page 63: Problems And Warning Signals

    Problems and Warning Signals If a buzzer sounds and the LCD display shows a warning sign, follow the guidance below. Warning Sign Cause Try this 1. The start/stop button is pressed with the foot control Disconnect the foot control. connected. Contact the service center 2.

  • Page 64: Troubleshooting

    Troubleshooting Condition Cause Reference The needle thread 1. The needle thread is not threaded properly. Page 21 breaks 2. The needle thread tension is too tight. Page 14-15 3. The needle is bent or blunt. Page 17 4. The needle is incorrectly inserted. Page 17 5.

  • Page 65: Stitch Chart

    Stitch Chart...

  • Page 66: Ec Declaration Of Conformity

    EC DECLARATION OF CONFORMITY Manufacturer: Janome Sewing Machine Co., Ltd. Address: 1463 Hazama-cho, Hachioji-shi, Tokyo 193-0941, Japan This machine complies with the following regulations: EN 60335-1: 2012; A11 EN 60335-2-28: 2003; A1 EN 62233: 2008 EN 55014-1: 2006; A1; A2...
  • Page 68 814-800-201 (EN)

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