Janome DMX 300 Manual

The Janome DMX 300 is a computerized sewing machine with advanced features including 50 built-in stitches, automatic needle threader, adjustable stitch length and width, built-in needle plate, drop feed for free-motion sewing, automatic thread cutter, and LCD screen display. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: LCD display, stitch selection dial, automatic needle threader, thread cutter, drop feed lever, bobbin winder, foot controller, and accessory compartment.

Feature	Description
LCD Display	Shows selected stitch, stitch length, and width settings
Automatic Needle Threader	Easily threads needle with lever mechanism
Automatic Thread Cutter	Cuts top and bobbin threads with button press
Drop Feed Lever	Lowers feed dogs for free-motion sewing
Stitch Selection Dial	Selects from 50 built-in stitches
Bobbin Winder	Automatically winds bobbin with safety stop
Foot Controller	Variable speed control for sewing
Accessory Compartment	Stores presser feet and accessories
Reverse Stitch Button	Reinforces stitching at beginning and end
Needle Up/Down Button	Sets needle position automatically

Installation & Setup

Unpack and inspect contents. Place on stable surface at proper height.

1. Remove packaging materials and protective covers
2. Attach power cord to machine and plug into outlet
3. Install foot controller and test operation
4. Wind bobbin and insert into bobbin case
5. Thread machine following numbered guide
6. Install appropriate presser foot for selected stitch

WARNING! Keep fingers away from needle area during operation. Always turn off power when threading or changing accessories.

Basic Operation

Power on machine; follow setup procedures for first use.

1. Select stitch using dial and confirm on LCD display
2. Adjust stitch length and width as needed
3. Place fabric under presser foot and lower foot lever
4. Use reverse stitch to secure beginning of seam
5. Guide fabric gently while sewing
6. Use automatic thread cutter when finished

CAUTION! Always use proper needle and thread for fabric type. Replace needle regularly.

Specifications

• Stitches: 50 built-in stitches including utility, decorative, and stretch
• Stitch Length: Adjustable 0-4mm
• Stitch Width: Adjustable 0-7mm
• Needle Positions: Left, center, right
• Bobbin: Front loading, jam-proof
• Speed: Up to 820 stitches per minute
• Display: LCD with stitch indicators
• Power Source: 110V AC, 60Hz
• Dimensions: Standard sewing machine size

Controls and Functions

Access functions via control panel and dials. Front Panel: Power switch, stitch selection dial, reverse stitch button, thread cutter button.

Control Panel: Stitch length dial, stitch width dial, needle position button, drop feed lever, bobbin winder.

Stitch Settings: Length (0-4mm), Width (0-7mm), needle position. Utility: Reverse stitching, thread cutting, bobbin winding. Display: Shows selected stitch number, length, and width settings.

Stitch Selection

50 built-in stitches including straight, zigzag, stretch, and decorative patterns.

1. Turn stitch selection dial to desired stitch number
2. Check LCD display for stitch confirmation
3. Adjust length and width as needed for fabric
4. Install appropriate presser foot
5. Test stitch on scrap fabric before sewing project

Tip: Refer to stitch guide chart for recommended settings for different fabrics.

Advanced Features

Automatic needle threader, thread cutter, drop feed, and needle up/down positioning.

1. Automatic Needle Threader: Pull lever down and thread through guide
2. Thread Cutter: Press button to cut top and bobbin threads
3. Drop Feed: Lower lever for free-motion quilting or darning
4. Needle Position: Set needle to stop in up or down position
5. Bobbin Warning: LCD indicates when bobbin thread is low

WARNING! Always turn off power when using automatic needle threader.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

1. Clean lint from bobbin area after each project
2. Oil machine according to maintenance schedule
3. Replace needle after 8-10 hours of sewing
4. Clean feed dogs with small brush
5. Store machine covered when not in use

CAUTION! Unplug machine before cleaning or maintenance. Use only recommended oils.

Accessories

Standard accessories included: Various presser feet, bobbins, needles, seam ripper, brush, screwdriver.

Accessory	Use
All-purpose Foot	General sewing
Zipper Foot	Installing zippers
Buttonhole Foot	Making buttonholes
Blind Hem Foot	Creating invisible hems
Overcasting Foot	Finishing seam edges

Regulatory Information

UL Listed: Complies with safety standards for household sewing machines. Copyright © Janome America, Inc. For support, visit www.janome.com or contact 1-800-631-0183. Made for household use only.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Machine not running	Power cord/foot controller	Check power connection; ensure foot controller is plugged in properly.
Thread breaking	Tension/needle issues	Check thread tension; replace needle; ensure proper threading.
Uneven stitches	Tension/threading	Re-thread machine; adjust tension; check bobbin insertion.
Fabric not feeding	Feed dogs/ presser foot	Ensure feed dogs are raised; check presser foot pressure.
Needle breaking	Bent needle/wrong size	Replace needle; use correct needle for fabric; check for obstructions.

Service: 1-800-631-0183; www.janome.com