Janome 350e Service Manual

The Janome 350e is a professional-grade embroidery machine featuring advanced stitching capabilities, LCD display, built-in embroidery designs, USB connectivity for custom designs, automatic thread tension, needle threader, speed control, and various embroidery hoops. This service manual provides comprehensive technical information for maintenance, troubleshooting, and repair procedures. Below are key sections covering features, maintenance, troubleshooting, specifications, and service procedures.

1. Features Overview 2. Technical Specifications 3. Maintenance Procedures 4. Troubleshooting Guide 5. Service and Repair 6. Parts Identification 7. Electrical Schematics 8. Software Updates 9. Calibration Procedures 10. Warranty Information 11. Safety Precautions

Features Overview

Key components: LCD touch screen, embroidery unit, thread spool pins, bobbin winder, needle bar, presser foot, USB port, memory card slot.

Feature	Description
Embroidery Area	Up to 5" x 7" embroidery field
Stitch Speed	Maximum 850 stitches per minute
Built-in Designs	Over 200 embroidery designs
LCD Display	3.5" color touch screen
USB Connectivity	For importing custom designs
Automatic Threader	One-touch needle threading
Thread Tension	Automatic and manual adjustment
Bobbin System	Top-loading jam-proof bobbin
Hoops Included	Various sizes for different projects
Memory	Internal storage for designs

Technical Specifications

Machine Type: Computerized embroidery machine
Stitch Types: Embroidery stitches only
Maximum Speed: 850 SPM
Needle System: HAx1 SP
Presser Foot: Automatic lift
Power Requirements: 110V AC, 60Hz
Dimensions: 18.5" W x 11.8" H x 16.5" D
Weight: 28.6 lbs
Warranty: 25-year limited warranty

Maintenance Procedures

Regular maintenance ensures optimal performance and longevity.

Daily cleaning: Remove lint and dust from bobbin area and feed dogs
Weekly oiling: Apply sewing machine oil to designated points
Monthly inspection: Check needle bar, hook, and tension assembly
Quarterly calibration: Verify stitch quality and alignment

WARNING! Always unplug machine before performing maintenance. Use only Janome-approved lubricants.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Thread breaking	Incorrect tension/needle	Check thread path; replace needle; adjust tension
Poor stitch quality	Dirty hook area/timing	Clean hook area; check hook timing
Machine not starting	Power supply/foot control	Check power cord; test foot control
Design misalignment	HooPing issue/calibration	Re-hoop fabric; run calibration routine
USB not recognized	Format compatibility	Reformat USB to FAT32; check file format

Service and Repair

Authorized service procedures for qualified technicians.

Needle bar replacement: Remove face cover, loosen set screw, replace bar
Hook timing adjustment: Align hook point with needle eye
Motor replacement: Disconnect power, remove covers, replace motor assembly
LCD display replacement: Remove bezel, disconnect ribbon cable, install new display

CAUTION! These procedures should only be performed by certified technicians.

Parts Identification

Complete parts list with reference numbers for ordering.

Part Number	Description	Qty
JNM-350E-001	Main circuit board	1
JNM-350E-002	Stepper motor assembly	2
JNM-350E-003	Needle bar assembly	1
JNM-350E-004	Hook assembly	1
JNM-350E-005	LCD touch screen	1
JNM-350E-006	Power supply unit	1
JNM-350E-007	Foot control pedal	1

Electrical Schematics

Detailed wiring diagrams and circuit board layouts.

Main power circuit: 110V AC input to DC conversion
Motor control circuit: Stepper motor drivers and controllers
Display circuit: LCD interface and touch sensor
Sensor circuits: Position sensors and safety switches

NOTE: All measurements in ohms; reference voltages marked on diagrams.

Software Updates

Procedure for updating machine firmware and software.

Download latest firmware from Janome support website
Copy update file to formatted USB drive
Insert USB while holding SETUP button
Follow on-screen prompts to complete update
Restart machine and verify version number

WARNING! Do not interrupt power during update process.

Calibration Procedures

Step-by-step calibration for optimal embroidery quality.

Needle position calibration: Align needle with center mark
Thread tension calibration: Test stitch and adjust accordingly
Design alignment: Run alignment pattern and adjust settings
Speed calibration: Verify consistent stitch formation at all speeds

Warranty Information

Janome 350e comes with 25-year limited warranty covering mechanical parts. Electronic components covered for 2 years. Warranty requires registration within 30 days of purchase. Service must be performed by authorized technicians.

Safety Precautions

Essential safety guidelines for operation and service.

Always disconnect power before servicing
Use proper lifting techniques - machine weighs 28.6 lbs
Keep fingers away from moving parts during operation
Use only Janome-approved accessories and parts
Ensure proper ventilation during extended use

EMERGENCY: For technical support contact Janome at 1-800-631-0183 or visit www.janome.com