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Janome MC6600 Service Manual

Janome MC6600
49 pages
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Revised on October 20, 2005

Table of Contents

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Janome MC6600 Specifications

General IconGeneral
BrandJanome
ModelMC6600
CategorySewing Machine
LanguageEnglish

Summary

Exterior Component Access

TO REMOVE FACE PLATE AND TOP COVER

Procedures for removing the front face plate and top cover of the sewing machine.

TO REMOVE BELT COVER AND MACHINE BASE

Steps to detach the belt cover and the machine's base unit for access.

TO REMOVE AUTO THREAD CUTTER COVER

Instructions for removing the protective cover of the automatic thread cutter.

TO REMOVE FRONT COVER

Detailed steps for safely detaching the main front cover of the sewing machine.

Internal Component Replacement

TO REPLACE THREAD GUIDE COVER

Guidance on replacing the thread guide cover assembly.

TO REPLACE ARM THREAD GUIDE (2)

Procedure for replacing the secondary arm thread guide component.

TO REPLACE CIRCUIT BOARD A AND FUSE

Steps for replacing the primary circuit board (A) and its associated fuse.

TO REMOVE CIRCUIT BOARD K

Instructions for the removal of circuit board K from the machine.

TO REMOVE CIRCUIT BOARD F AND SLIDE VOLUME

Procedure for removing circuit board F and the slide volume control.

Connection Diagrams

CONNECTION OF CONNECTORS

Diagram illustrating the connection points for various machine components and circuit boards.

Key Mechanical Adjustments

TO ADJUST NEEDLE DROP POSITION

Adjusting the needle's path relative to the needle plate for stitch accuracy.

TO ADJUST THE BACKLASH OF HOOK DRIVE AND LOWER SHAFT GEARS

Correcting play in hook drive and lower shaft gears for smooth operation.

ADJUSTMENT OF HOOK TIMING

Setting the correct timing relationship between the needle and hook.

ALTERNATIVE WAY OF ADJUSTMENT

Provides an alternative method for hook timing adjustment.

Height and Clearance Adjustments

ADJUSTMENT OF NEEDLE BAR HEIGHT

Setting the correct vertical position of the needle bar.

ALTERNATIVE WAY OF ADJUSTMENT

Offers an alternative method for adjusting needle bar height without checking hook timing.

ADJUSTMENT OF CLEARANCE BETWEEN NEEDLE AND ROTARY HOOK

Fine-tuning the minimal gap between the needle and the rotary hook tip.

ADJUSTMENT I

Procedure for adjusting needle-to-rotary hook clearance using a master needle.

ADJUSTMENT II

Alternative procedure for adjusting needle-to-rotary hook clearance using the hook base plate.

Presser Bar and Feed Dog Adjustments

ADJUSTMENT OF DIRECTION OF PRESSER BAR AND ITS HEIGHT (1)

Sets presser foot height and ensures parallelism with feed dog slots.

ADJUSTMENT OF DIRECTION OF PRESSER BAR AND ITS HEIGHT (2)

Fine-tunes presser bar direction and height, ensuring smooth movement and correct alignment.

TO ADJUST THE FEED DOG HEIGHT

Setting the correct vertical position of the feed dog.

PARALLEL OF THE FEED DOG

Procedure to ensure the feed dog is parallel to the needle plate surface.

Tension and Drive System Adjustments

TO REPLACE NEEDLE THREAD TENSION UNIT

Steps for replacing the entire needle thread tension assembly.

TO ADJUST THE UPPER THREAD TENSION RELEASE (1)

Adjusting the thread tension release mechanism's clearance.

TO ADJUST THE UPPER THREAD TENSION RELEASE (2)

Fine-tuning the upper thread tension release based on motor operation.

TO ADJUST THE UPPER THREAD TENSION

Setting the correct upper thread tension using the tension dial.

Specialized Component Adjustments

TO ADJUST THE BOBBIN WINDER STOPPER

Adjusting the bobbin winder stopper for correct thread amount.

TO REPLACE NEEDLE THREADER PLATE

Procedure for replacing the needle threader plate component.

TO ADJUST THE POSITION OF THE THREADER PLATE (C)

Adjusts the threader plate position to correct needle eye hitting or missing.

TO REPLACE AUTO THREAD CUTTER

Steps for replacing the automatic thread cutter mechanism.

TO CHECK THE AUTO-THREAD CUTTER

Verifies the correct operation of the auto thread cutter mechanism after replacement.

Drive System and Timing Adjustments

TO ADJUST UPPER SHAFT CLUTCH

Adjusting the upper shaft clutch for proper engagement and play.

CLUTCH BASE (UNIT) ANGLE

Ensures the correct angle of the upper shaft clutch base relative to the ground.

ADJUSTING THE PLAY OF CONNECTING BLOCK

Adjusts the clutch base position to fix play in the connecting block for smooth operation.

LOWER SHAFT

Details the attachment of parts to the lower shaft assembly.

TIMING BELT

Instructions for setting the timing belt and its alignment marks.

TO REPLACE DRIVING MOTOR

Procedure for replacing the machine's driving motor.

Specialized Adjustments and Timing

TO ADJUST ZIGZAG TIMING

Setting the correct timing for the zigzag stitch function.

TO ADJUST BUTTONHOLE LEVER POSITION

Adjusting the buttonhole lever for correct operation and clearance.

ADJUSTMENT OF STRETCH STITCH FEED BALANCE

Balancing the feed mechanism for stretch stitch patterns.

ADJUSTMENT OF PRESSER BAR LIFTER SWITCH POSITION

Setting the presser bar lifter switch for correct display feedback.

Solenoid and Switch Adjustments

TO ADJUST THE AUTO THREAD CUTTER SWITCH POSITION

Adjusting the auto thread cutter switch based on driving arm position.

TO ADJUST UPPER CLUTCH SOLENOID

Setting the correct clearance for the upper clutch solenoid.

TO ADJUST THREAD CUTTER SOLENOID

Adjusting the thread cutter solenoid clearance.

TO ADJUST BOBBIN DETAINING SOLENOID

Setting the correct clearance for the bobbin detaining solenoid.

DIAGNOSIS CHART

PREPARATION

Steps to prepare the machine before using the diagnosis device.

WHEN THE SEWING LAMP DOES NOT TURN ON

Troubleshooting steps for when the sewing lamp fails to illuminate.

TO ACTIVATE THE DIAGNOSIS DEVICE

Instructions on how to initiate the diagnostic mode on the machine.

STEP 1 (FUNCTION OF BUZZER, LCD AND LED)

Checks the buzzer, LCD, and LED functions during the initial diagnostic step.

STEP 3 (DETECTING SWITCH)

Verifies the correct operation of various machine switches based on their position.

STEP 8 (SOLENOID)

Tests the solenoids for proper function based on needle bar position.

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