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Pfaff Creative 7550 Service Manual

Pfaff Creative 7550
116 pages
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PFAFF
creative
7550
Seice Manual

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Pfaff Creative 7550 Specifications

General IconGeneral
Built-in Fonts5
Stitch Width7 mm
USB PortYes
Automatic Thread CutterYes
Built-in MemoryYes
TypeSewing and Embroidery Machine
StitchesDecorative
DisplayColor Touch Screen
BobbinTop-loading
Embroidery Designs282 built-in embroidery designs

Summary

Sewing Machine Notes and Safety

Ambient Conditions and Handling

Recommended operating environment and handling precautions for the sewing machine.

Cleaning Procedures

Guidelines for cleaning the machine's housing and display screen.

General Safety Guidelines

Essential safety measures for operating and maintaining the sewing machine.

Pfaff 7550 CD Specifications

Machine Features and Capabilities

Overview of the sewing machine's technical and functional specifications.

Motor Specifications

Technical specifications for the motors integrated into the sewing machine.

Feeding System Adjustments

Toothed Belt Tension

Procedure to adjust the tension of the toothed drive belt.

Feed Dog Driving Shaft Alignment

Adjusting the feed dog driving shaft for correct sideways movement.

Feed Motion Timing

Steps to ensure the feed motion mechanism operates with correct timing.

Feed Dog Sideways Position

Aligning the feed dog's lateral position within the feed slot.

Feed Dog Height

Correctly setting the vertical height of the feed dog teeth.

Synchronizer Adjustment

Adjusting the synchronizer to control various machine functions.

Presser Bar Height

Adjusting the presser bar to the correct height for sewing.

Top Feed Foot Alignment

Positioning the top feed foot relative to the feed dog.

Top Feed Foot Height

Setting the correct vertical height for the top feed foot.

Zigzag Mechanism Adjustment

Needle Position in Hole

Ensuring correct needle centering for straight and zigzag stitches.

Stitch Forming Parts Calibration

Needle Hole Positioning

Ensuring correct needle centering in the needle plate hole.

Hook-to-Needle Clearance

Precisely setting the gap between the hook point and the needle.

Bevel Gear Calibration

Adjusting bevel gears for smooth operation and accuracy.

Hook Timing

Setting the timing of the hook mechanism relative to the needle.

Needle Bar Height

Setting the needle bar height for proper hook engagement.

Bobbin Case Position Finger

Adjusting the finger that guides the bobbin case into position.

Stitching Off Adjustments

Needle Threader Calibration

Adjusting the needle threader's height and lateral position.

Bobbin Winder Stop Setting

Adjusting the bobbin winder to stop at the correct thread level.

Bobbin Thread Tension

Setting the correct tension for the bobbin thread.

Needle Thread Tension

Adjusting needle thread tension for proper stitch interlacing.

Thread Check Spring Stroke

Adjusting the thread check spring for correct thread slackening.

Stitch Length Consistency

Ensuring uniform stitch length in both forward and reverse sewing.

Sewing Sample Creation

Making a sample to verify stitch quality after adjustments.

Repair and Component Replacement

Needle Thread Tension Unit

Dismantling and reassembling the needle thread tension mechanism.

Handwheel Release Pressure Spring

Replacing the pressure spring within the handwheel release.

Sewing Hook Assembly

Instructions for disassembling, cleaning, and reassembling the sewing hook.

Machine Cleaning and Lubrication

Guidelines for routine cleaning and oiling of the sewing machine.

Toothed Belt Replacement

Detailed procedure for replacing the toothed drive belt.

Bevel Gear Replacement

Instructions for replacing bevel gears, noting pair replacement.

Bottom Circuit Board

Procedure for replacing the main bottom circuit board.

Thread Monitor/Free-Arm Cover

Replacing the thread monitor unit along with the free-arm cover.

Control Panel

Steps for replacing the machine's control and programming panel.

Synchronizer Unit

Procedure for replacing the synchronizer unit.

Motor Replacement

Instructions for removing and installing the sewing machine motor.

Motor Circuit Board

Replacing the circuit board associated with the motor.

Motor Pinion

Procedure for replacing the motor pinion, often done with rotor exchange.

Foot Control Cable Reel

Replacing the cable reel mechanism within the foot control unit.

Top Stepping Motor (Sideways Needle Bar)

Replacing the stepping motor for sideways needle bar movement.

Lower Stepping Motor (Feed Movement)

Replacing the stepping motor that controls the feed movement.

Transverse Drive Stepping Motor

Procedure for replacing the stepping motor controlling transverse drive.

Buttonhole Sensor

Instructions for replacing the buttonhole sensor unit.

Key Machine Functions

Self-Test Operation

How to initiate and perform a self-test on the sewing machine.

Code Input and Language

Procedures for entering codes and changing the display language.

Pattern and Buttonhole Functions

Accessing and using pattern adjustment and buttonhole features.

Diagnostic Procedures

Machine Self-Test

Detailed table outlining steps for machine self-testing.

Buttonhole Sensor Test

Specific test procedures for diagnosing the buttonhole sensor.

Troubleshooting and Repair Guidance

Error Replacement List

Cross-references error messages to potential replacement parts.

Electronics Fault-Finding Flowchart

A flowchart to diagnose electronic faults in the Pfaff Creative 7550 CD.

Electronic Parts Fault Table

A table listing common faults and suggested replacement parts.

Creative Designer Test Procedure

Test Arrangement and Operation

Steps for testing the Creative Designer with the Pfaff 7550 CD.

Electrical Safety Testing

General Safety Test Overview

Information on electrical safety testing standards and regulations.

Testing with ABB Metrawatt M 5013

Detailed steps for performing electrical safety tests using specific equipment.

Stray Current and Inadmissible Values

Procedures for testing stray current and handling inadmissible test values.

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