Mitsubishi DB 130G Sewing Machine Manual

The Mitsubishi DB 130G is an industrial-grade sewing machine designed for heavy-duty applications with automatic thread trimming, programmable stitch patterns, digital speed control, built-in needle positioning, automatic lubrication system, and advanced tension control. Suitable for leather, canvas, and multiple fabric types. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Accessories 7. Basic Sewing Operations 8. Advanced Functions 9. Maintenance & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Heavy-duty metal frame, Digital control panel, Automatic thread trimmer, Programmable stitch memory, Speed control dial, Bobbin winding system, Needle positioner.

Feature	Description
Automatic thread trimmer	Cuts top and bobbin threads automatically
Programmable stitch patterns	Store up to 50 custom stitch sequences
Digital speed control	Adjustable from 100 to 2500 stitches per minute
Built-in needle positioner	Automatically stops needle in up or down position
Automatic lubrication	Self-oiling system for continuous operation
Tension control	Digital display for precise thread tension adjustment
Bobbin warning system	Alerts when bobbin thread is low
Knee lift lever	Hands-free presser foot lifting
Reverse stitch	Programmable reverse stitching function
Memory function	Save and recall custom settings

Installation

Unpack and inspect contents. Place on stable industrial table.

Position machine: Ensure stable surface with adequate workspace.
Connect power: Use provided power cable to appropriate outlet.
Install needle: Insert needle with flat side facing back, tighten screw.
Thread machine: Follow threading diagram for upper and lower threading.
Connect foot pedal: Plug into designated port on machine.

WARNING! Machine is heavy; use proper lifting techniques. Ensure power is disconnected during installation.

First-Time Setup

Power on machine; initialize system settings.

Language selection: Press SETUP button, select ENGLISH (default).
Calibrate tension: Use auto-tension feature for initial setup.
Set needle position: Configure default needle stop position.
Program basic stitches: Set straight stitch and zigzag defaults.
Test operation: Run test fabric through all basic functions.

CAUTION! Keep fingers away from needle area during operation. Always use proper lighting.

Specifications

Machine Type: Industrial Straight Stitch
Stitch Length: 0-6mm adjustable
Speed Range: 100-2500 SPM
Needle System: DBx1
Stitch Patterns: 50 programmable patterns
Motor: 550W servo motor
Lubrication: Automatic oiling system
Dimensions: 450mm x 210mm x 380mm
Weight: 38kg
Power Requirements: 220V, 50/60Hz

Controls and Settings

Access functions via digital control panel and manual controls.

Control Panel: Power switch, Speed dial, Stitch length adjuster, Reverse stitch button, Thread trimmer button, Needle position selector.

Basic Settings: Stitch length (0-6mm), Thread tension (0-9), Presser foot pressure, Feed dog height, Bobbin winding tension. Advanced: Programmable stitch memory, Automatic thread trimming sensitivity, Speed limiting, Needle stop position memory.

Connecting Accessories

Various presser feet and attachments available for different applications.

Turn off power before changing accessories.
Select appropriate presser foot for fabric type.
Attach walking foot for difficult fabrics.
Install zipper foot for zipper applications.
Use buttonhole foot for automatic buttonholes.

Tip: Always use genuine Mitsubishi accessories for optimal performance.

Basic Sewing Operations

Standard sewing procedures for common fabrics.

Power on: Switch machine to ON position.
Select stitch: Choose appropriate stitch pattern.
Position fabric: Place under presser foot.
Start sewing: Press foot pedal gradually.
Reverse stitch: Press reverse button to secure stitches.
Auto trim: Press thread trimmer at end of seam.
Needle position: Use positioner to raise/lower needle.

WARNING! Never force fabric through machine. Always use proper needle for fabric type.

Advanced Functions

Programmable features for complex sewing tasks.

Stitch Programming: Record and store custom stitch sequences. Memory Function: Save frequently used settings. Speed Control: Program maximum speed limits. Automatic Thread Control: Monitor and adjust tension automatically. Pattern Combination: Combine multiple stitch patterns in sequence.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

Daily: Clean lint from bobbin area and feed dogs.
Weekly: Oil machine according to lubrication chart.
Monthly: Check belt tension and motor alignment.
Quarterly: Professional service recommended.

CAUTION! Always disconnect power before cleaning. Use only recommended lubricants.

Regulatory Information

CE certified for European safety standards. Complies with ISO 9001 quality management. Copyright © Mitsubishi Electric Corporation. All trademarks property of Mitsubishi Electric. For technical support, visit www.mitsubishi-electric.com/support or contact +81-3-3218-2111.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Thread breaking	Incorrect tension/needle	Check tension settings; replace needle; rethread machine.
Skip stitches	Wrong needle type/damage	Use correct needle for fabric; replace damaged needle.
Machine jams	Thread buildup/lint	Clean bobbin area; remove tangled threads; restart machine.
Uneven stitches	Tension issues	Recheck upper and lower tension; clean tension disks.
No power	Power connection/fuse	Check power cord; verify outlet; replace fuse if necessary.
Automatic trim not working	Sensor blockage/settings	Clean sensors; check trimmer settings; recalibrate system.

Reset: Hold SETUP + POWER for 10 seconds to factory reset.

Service: Contact authorized Mitsubishi service center for repairs.