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Husqvarna 1050 User Manual

Husqvarna 1050
61 pages
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104 72 30-26 Husqvarna service manual 1
SERVICE MANUAL
MODEL
1200, # 1
1100
1090
1070
1050
SEWKNITWORLD

Table of Contents

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Husqvarna 1050 Specifications

General IconGeneral
BrandHusqvarna
Model1050
CategorySewing Machine
LanguageEnglish

Summary

Setting Instructions

Hook Gear Setting

Adjusting the tangential play of the hook gear for proper operation.

Presser Foot Parallelism

Ensuring the presser foot is parallel to the stitch plate marking lines.

Needle to Presser Foot Alignment

Setting the needle to pass through the center of the presser foot hole.

Hook and Needle Gap

Adjusting the minimal gap between the hook tip and the needle.

Thread Tension of the Bobbin Case

Setting the thread resistance of the bobbin case with a weight.

The Balance of the Stitch Length

Adjusting stitch length balance for buttonholes and patterns.

Guide Step Motor Pre-setting

Setting the guide step motor for various model versions.

Dismounting and Mounting Instructions

Front Cover Removal

Steps to dismount the front cover and its components.

Transformer and Circuit Board Exchange

Replacing the transformer and its circuit board with ESD precautions.

Sewing Head Dismounting/Mounting

Procedure for removing and mounting the sewing head assembly.

Fault Finding Diagram

Guide to diagnosing and troubleshooting machine problems based on symptoms.

Directions for Use

ESD Precautions

Important precautions for handling electronics to avoid damage from electro static discharge (ESD).

Setting Gauges

Gauge for Hook Timing

Tool for setting hook timing relative to the needle.

Gauge for Feed Dog Height

Tool used to measure the correct height of the feed dog.

Distance Gauges

Various gauges for setting step motors and needle position.

Service Tools

Fixed Spanner Set

Various fixed spanners for specific adjustments and settings.

Adam Keys

Hex keys of various sizes for motor and needle adjustments.

Extractor Tool

Tool used for safely removing components like the memo-chip.

Visual Control of Details

Stitch Plate Inspection

Requirements and actions for checking the condition of the stitch plate.

Presser Foot Inspection

Checking the presser foot for damage and its role in stitch formation.

Feed Dog Inspection

Requirements and actions for checking the feed dog for damage and cleanliness.

Hook Inspection

Checking the tip and surface of the hook for damage.

Foot Control Functionality

Speed Control Requirement

Ensuring continuous speed control from lowest to full speed.

Electronics

Wiring Diagram

Diagram showing connections between external units and the driveboard.

Service Cassette and Program Functions

Details on using service cassettes and programs for machine settings across different models.

Electrical Components and Functions

Presser Foot Lift Switch

Functionality and checking of the switch that detects presser foot position.

Buttonhole Meter

Checking the functionality of the buttonhole meter's potentiometer.

Lower Thread Indicator

How the lower thread indicator works and troubleshooting its function.

Step Motor Functions

Step Motor Thread Tension

Adjustment and troubleshooting for the thread tension step motor.

Step Motor Sewing Head

Setting and troubleshooting the step motor for zigzag needle movement.

Step Motor Guide (Feeding)

Setting the step motor for feeding direction control.

Electronic Components and Motors

Transformer Function

Checking the function of the transformer for specific models.

Electronics Boards Overview

Description of circuit boards and foil keyboards for models 1050, 1070, 1090.

Main Motor Operation

Details on the 24V permanent magnet motor and troubleshooting its operation.

LCD Display Angle Adjustment

How to adjust the viewing angle of the LCD displays.

Feed Dog Settings

Feed Dog Parallelism

Ensuring the feed dog is parallel to the stitch plate grooves.

Feed Dog Height

Setting the correct height of the feed dog above the stitch plate.

Stitch Length Balance Adjustment

Model 1050 Stitch Balance

Adjusting stitch length balance for buttonholes and patterns on model 1050.

Model 1070 Stitch Balance

Adjusting stitch length balance for buttonholes and patterns on model 1070.

Model 1090 Stitch Balance

Adjusting stitch length balance for buttonholes and patterns on model 1090.

Guide Step Motor Pre-setting

Guide Step Motor Pre-setting Version 1

Setting the guide step motor for models 1100 and 1050/1090.

Guide Step Motor Pre-setting Version 2

Setting the guide step motor for models 1200 and 1050/1070/1090.

Side Feeding Step Motor Pre-setting

Side Feeding Step Motor Adjustment

Adjusting the step motor for side feeding mechanism positions.

Feeding Mechanism Sideways Setting

Sideways Play Adjustment

Setting the sideways play in the feeding mechanism for smooth movement.

Troubleshooting Guide

Reduced Speed Issues

Diagnosing why the machine runs at reduced speed.

Machine Dead

Troubleshooting when motors, displays, and diodes are non-functional.

Foot Control Not Working

Diagnosing issues with the foot control operation.

Zig-Zag Movement Errors

Diagnosing incorrect or non-existent zig-zag movement.

Lower Thread Alarm Failure

Diagnosing why the machine does not alarm for low lower thread.

Flashing Display Symbols

Diagnosing issues when all symbols flash on the display.

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